JP2003331601A - Light emitting diode flashlight - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light emitting diode flashlight, where the number of parts is minimized and the assembling is easy while improving rectilinearity so as to shine a light beam to the distance, and uniform brightness can be maintained in use for a long time due to excellent radiation characteristics. <P>SOLUTION: This light emitting diode flashlight comprises a conductive housing tube 100, a conductive tail cap 300, and a head 200. The head 200 includes a conductive head cap 210, an insulating tube 220, a lamp module 230, a first connecting conductor 240, a second connecting conductor 250, and a collimator lens 260 to be modularized. Further, the head 200 includes a radiation metal cap 270. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a light emitting diode (L
The present invention relates to an LED flashlight using an ED (Light Emitting Diode) as a lamp, and more particularly, to an LED flashlight having an improved LED module.
It relates to an ED flashlight.

[0002]

[Prior art]

[Patent Document 1] Korean Utility Model Registration No. 20-21949
No. 7

[Patent Document 2] Korean Utility Model Registration No. 20-23748
No. 8

Recently, due to the development of semiconductor technology, high brightness LE
As the D element has been developed, a flashlight using a high brightness LED element as a lamp has been developed and commercialized.

Generally, an LED has a long service life as compared with a general filament bulb or a discharge lamp, for example, 1
It can be used almost semi-permanently in about 0,000 hours, consumes considerably less power, and consumes less dry battery than a filament light bulb, which is economical.

Patent Document 1 discloses an LED flashlight using one light emitting diode. In Patent Document 1, the lead wire of the LED is inserted into the lamp holder, and the lead wire extending rearward is bent to be electrically connected to the positive electrode and the negative electrode of the dry battery by a switching operation.

Patent Document 2 discloses a technique in which a plurality of light emitting diodes are used for a head flash lamp. The head flash of Patent Document 2 is red, yellow,
A technique for emitting white light by combining blue light emitting diodes is shown.

[0007]

The flashlight of Patent Document 1 discloses a very small flashlight using one LED, but the number of parts of the connecting structure for connecting with the electrodes of the dry battery is large. However, the assembly process is complicated.

When the temperature of the junction of the light emitting diode rises, both the forward voltage and the current decrease, so that the brightness decreases as the temperature rises. High-brightness light emitting diodes of recent years generate a larger amount of current as compared with existing ordinary light emitting diodes, and thus generate heat during long-term use. Therefore, this heat causes the temperature of the junction to rise as the ambient temperature rises, resulting in an even darker brightness.

Further, when the lamp of the flashlight is used, the LED is provided in the closed space of the head part and is maintained in a state of being shielded from the outside air, so that the ambient temperature of the light emitting diode depends on the thermal resistance characteristic of the light emitting diode itself. Will rise faster.

In a severe case, the characteristics of the light emitting diode change due to the thermal stress, which shortens the life or causes a failure such as damage.

Therefore, although the data book on the use of the light emitting diode recommends that the light emitting diode be used at the maximum rated voltage and the maximum rated current or less, when the light emitting diode is provided in a sealed space such as a flashlight and used, it still remains. It has a problem of heat dissipation.

Further, when the driving is performed at the maximum rated voltage and current or less, the driving current is limited to the rated operating current or less, so that the brightness of the flashlight is also limited to a certain level or less.

Therefore, in a flashlight using a light emitting diode as a lamp, a method of heat dissipation design that can maintain uniform brightness even when used for a long time must be studied.

The present invention has been made in view of the above points,
The purpose is to make the light emitting diode and collimator lens modularized in the head part to improve the straightness so that the light beam illuminates a long distance, while minimizing the number of parts and making it easy to assemble. To provide.

Further, according to the present invention, the heat generated from the LED module is effectively radiated to the outside, so that the uniform brightness can be maintained even if the desired brightness is used for a long time without limiting the rated current. A second object is to provide an LED flashlight that can be used.

Furthermore, it is a third object of the present invention to provide an LED flashlight having a rear push button switch.

A fourth object of the present invention is to provide an LED flashlight having a dry battery holder incorporated therein.

A fifth object of the present invention is to provide a multi-LED flashlight which is easy to assemble by assembling a plurality of light emitting diodes on one insulating substrate to minimize the number of parts. .

[0019]

The light emitting diode flashlight of the present invention includes a conductive housing, a rear cap, and a head portion.

In the present invention, the head portion has a transparent window on the front surface through which a light beam is emitted, and a conductive head cap detachably coupled to the tip of the conductive housing, and a rear end of the head cap. With an insulating tube in which the tip portion is inserted toward the transparent window and a slot is formed in the outer wall in the axial direction,
It is assembled at the inner rear end of this insulating cylinder, a light emitting diode is provided at the center of the front surface, and an anode electrode terminal and a cathode electrode terminal of the light emitting diode are formed around it.
The lamp module is formed of an insulating substrate having a heat-dissipating metal layer coated on a rear surface thereof and is connected to the positive electrode of the dry battery, and the anode module of the insulating substrate is electrically connected to the heat-dissipating metal layer. A U-shaped first connecting conductor into which a side surface of the insulating substrate is inserted, one end of which is provided in a slot of the insulating cylinder and is in electrical contact with an inner surface of the head cap, and the other end of which extends inside the insulating cylinder. The second connecting conductor connected to the cathode electrode terminal of the light emitting diode module, the transparent window of the head cap, and the insulating substrate of the lamp module are assembled inside the insulating tube, and the light is emitted from the light emitting diode. And a collimator lens for refracting the light beam forward.

The head portion of the present invention is attached to the heat dissipation metal layer on the rear surface of the insulating substrate with an insulating material, which is an insulating adhesive having excellent thermal conductivity and electrically insulating characteristics, interposed therebetween. It is desirable to further include a heat dissipation metal cap that is in contact with the inner surface of the conductive storage cylinder and transfers the heat of the heat dissipation metal layer to the conductive storage cylinder to release the heat to the outside.
As the insulating material, it is desirable to use an insulating adhesive having excellent thermal conductivity and electrically insulating properties.

The heat-dissipating metal cap has a hole formed in the center thereof so that the positive electrode of the dry battery is connected to the heat-dissipating metal layer, and an insulating ring is formed in the hole to prevent the positive electrode of the dry battery from coming into contact. It is desirable to be fitted. The heat-dissipating metal cap surrounds the rear end of the insulating cylinder, and its tip is in contact with the rear end of the head cap.

The lens of the present invention comprises a collimator lens. This improves the straightness of the light beam and illuminates the light far.

In the present invention, it is preferable that the length of the conductive storage cylinder is the same as or slightly longer than the width of a normal adult palm, and a plurality of acupressure protrusions are formed on the outer surface. The plurality of acupressure protrusions on the outer surface can increase the outer surface area and quickly dissipate the heat inside, thereby increasing the heat dissipation effect.

In the present invention, one end of the second connecting conductor is formed of an elastic structure for electrically intimate contact with the inner surface of the head cap.

In the present invention, the rear cap preferably includes a push button switch, which is inserted into the rear recess of the main body of the rear cap to advance when pressure is applied and which is restored by a spring when pressure is removed. A button, a moving body that is inserted into a hole of the main body and is toggled to any one of a forward movement state and a backward movement state each time the push button is pushed in conjunction with the pushing operation of the push button, and has a hole in the center, The movable body is fixed in the hole so as to be operated, and the conductor piece electrically contacting the body and the movable body are coupled to the movable body through the holes of the conductor piece. Moved back and forth,
In the forward drive state, the negative electrode of the dry battery housed in the conductive storage cylinder is electrically contacted with the conductor piece, and in the reverse drive state, the conductive rod is separated from the negative electrode to cut the electrical contact.

The present invention preferably includes a dry battery holder housed in a conductive container, and it is desirable to hold three AAA type dry batteries in parallel and electrically connect them in series.

The dry battery holder includes a positive conductor formed on the front surface of the main body and electrically contacting the heat dissipation metal layer, and a negative conductor formed on the rear surface of the main body and electrically contacting the spring of the rear cap. including.

Further, in the present invention, the conductive housing has a hole formed in the outer wall of the tip portion and a push button switch provided inside thereof, and the knob of the push button switch is exposed to the outside through the hole. The punch may be provided with an elastic knob that covers the knob.

The push button switch is housed in the conductive housing cylinder, is divided into two in the axial direction, and is fixed so as to project to the front surface of the insulating cylinder and the insulating cylinder that forms a cylinder when combined, and the lamp module. A spring electrically contacting the heat dissipation metal layer, and a positive conductor fixed to the rear surface of the insulating cylinder and electrically contacting the positive electrode of the dry battery,
A knob is fixed to a side surface of the insulating cylinder so as to project into the punch hole, a first terminal is electrically connected to a rear end of the spring, and a second terminal is electrically connected to the positive conductor for switching. Equipped with a switch.

The conductive storage cylinder of the present invention has a length longer than the length in which three C-type dry batteries are stored in series.

The multi-LED flashlight of the present invention includes a conductive container, a rear cap, a head cylinder, a head cap, a lamp module and a reflector.

The conductive container has at least one dry battery and has a metal cylindrical pipe structure to provide a passage for electrically connecting the negative electrode of the dry battery and one terminal of the lamp. Is desirable. It is desirable to form a sine wave-shaped soft bend whose wavelength becomes longer from the tail to the head on the outer surface of the conductive housing, and to have a structure that matches the extent to which the finger spreads when picked up by the hand.

The tail cap is made of metal and is detachably coupled to one end of the conductive storage cylinder with a screw, and a pressure is applied to the negative electrode of the dry battery housed in the conductive storage cylinder through a spring provided on the front surface of the cap. While adding
Electrically connected to electrically connect the conductive housing to the negative electrode.

The head cylinder is made of metal and has a rear end portion into which the other end of the conductive storage cylinder is inserted and a front end portion having a diameter larger than this rear end portion. The outer side surface and the inner side surface of the rear end of the head are screwed together, and the other end of the electrically conductive storage tube is inserted to a position adjacent to the stopping jaw formed on the inner side surface. It is moved back and forth along the axial direction.

The head cap is detachably coupled to the head end of the head cylinder with a screw, and a transparent window for emitting a light beam is formed on the front surface.

The lamp module includes an insulating substrate, a plurality of light emitting diodes, a center terminal and a ring terminal.

The insulating substrate has a disk shape having a diameter smaller than the head tip diameter of the head cylinder but larger than the head rear end diameter, and is fixed and stored in the stopping jaw in the head cylinder. Each circuit pattern is formed.

The printed circuit pattern on the front surface is a radial line pattern radially expanded from the center along a boundary line that divides equally according to the number of a plurality of light emitting diodes, and the center of each area divided by this radial line pattern. To a plurality of anode line patterns extended adjacent to each line end of the emission line pattern, and a plurality of cathode patterns covering other regions except the anode line pattern in each region divided by the emission line pattern. The plurality of cathode line patterns are formed in the largest area in a given space to help heat the light emitting diode. The plurality of cathode patterns may be formed as one integrated pattern that surrounds the line pattern. That is, when the number of light emitting diodes is 3, it is equally divided into three, when it is four, it is equally divided into four, and when it is six, it is equally divided into six.

The printed circuit board on the rear surface has a plus pad formed in a circular shape in the center, a plurality of circular anode pads arranged at equal intervals around the plus pad, and a plus pad in a state of surrounding the plurality of anode pads. It includes a ring-shaped minus pad formed on the outer portion. The ring-shaped minus pad is formed in the largest possible area and has a role of releasing heat generated from the light emitting diode to the outside.

A hole is formed in the center of the insulating substrate, the center of each anode pad, and the ring-shaped minus pad. The anode lead wire and the cathode lead wire of the corresponding light emitting diode are inserted from the front surface into the holes formed in the ring-shaped negative pad corresponding to the holes formed in the anode pad, and are drawn out to the rear surface.

Therefore, a plurality of white light emitting diodes are arranged on the front surface of the insulating substrate so that the light beam is directed forward.

The center terminal is formed by being covered with solder so as to slightly project from the plus pad formed at the center of the rear surface of the insulating substrate. A part of the solder flows through the hole formed in the center to the front surface to be hardened and electrically connected to the center of the radiation line pattern on the front surface.

The ring terminal is formed by covering a plurality of cathode lead wires, which are respectively projected through a plurality of holes of the minus pad on the rear surface of the insulating substrate, with solder and protruding a little to the rear. Here, the minus pad and the cathode pattern are electrically connected by the solder that has flowed to the front surface through the perforation and has become hard.

When the anode lead wires of the light emitting diodes protruding through the holes of the anode pad are covered with solder, respectively, a part thereof flows to the front surface through the holes and becomes hard, and is electrically connected to the anode line pattern on the front surface. .

It is preferable that a resistance element for limiting a current supplied to the light emitting diode is connected between each end of the emission line pattern and each end of the anode line pattern. The resistance value of this resistance element sets an appropriate forward current value so as to always maintain a constant brightness regardless of changes in ambient temperature conditions.

The reflecting mirror is arranged in an internal space formed by combining the head cylinder and the head cap in front of the insulating substrate,
The light beams emitted from the plurality of light emitting diodes are reflected forward.

Preferably, the reflector has a cup shape and a plurality of holes for inserting a plurality of light emitting diodes are formed on the base surface. It is desirable that the inner surface of the reflecting mirror be a parabolic surface.

Further, the reflecting mirror may have a structure in which a plurality of light emitting diodes are arranged in the shape of a cylindrical pipe whose diameter becomes narrower toward the rear, and a reflective layer is coated on the front surface of an insulating substrate.

According to the present invention, a metal material, which is disposed between the stopping jaw of the head cylinder and the insulating substrate, thermally close-couples the insulating substrate and the head cylinder, and transfers the heat of the insulating substrate to the head cylinder. It is desirable to further include a heat dissipation ring.

In the present invention, the screw connection between the head cylinder and the other end of the conductive storage cylinder is preferably a multi-wire, for example, 3-wire screw structure in order to speed up the power-on / power-off operation.

In the present invention, the length of the conductive storage cylinder is generally longer than the length of three AA size dry cells connected in series, and the inner diameter is preferably slightly larger than the diameter of the AA size dry cell. .

In the present invention, the rear cap may also include a push button switch for turning on / off the gap between the spring and the negative electrode of the dry battery.

Further, the flashlight of the present invention has a head portion and a storage portion, a stopping jaw is formed at a boundary between the head portion and the storage portion, and at least one dry battery is stored in the storage portion. A conductive storage cylinder for
A tail including a push button switch that is detachably coupled to the rear end of the conductive storage cylinder and electrically switches between the negative electrode of the dry battery housed in the conductive storage cylinder through a spring and the conductive storage cylinder. A cap, a head cap detachably coupled to the tip of the head portion and having a transparent window on the front surface for emitting a light beam; and an insulating substrate inserted into the head portion and fixed and stored in the stopping jaw. And a plurality of light emitting diodes arranged on the front surface of the insulating substrate so that the light beams are directed forward, and anode electrodes of the plurality of light emitting diodes formed in the center of the rear surface of the substrate are commonly connected to each other and slightly protrude rearward. A central terminal that is in contact with the positive electrode of the dry cell and a plurality of light emitting diodes formed around the central terminal on the rear surface of the substrate. A lamp module having a sword electrode connected in common and a ring terminal electrically contacting the stopping jaw, and an internal space formed by combining the head portion and the head cap in front of the insulating substrate. And a reflecting mirror that reflects forward the light beams emitted from the plurality of high-intensity light emitting diodes.

[0055]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

1 to 5 are schematic views of a rear push button type single LED flash light according to a preferred embodiment of the present invention.

As shown in FIG. 1, the flashlight 10 according to one embodiment of the present invention includes a conductive container 100, a head portion 200, a rear cap 300, and a rubber cap 400.

The conductive housing 100 has a length about the width of an adult's palm and provides a current path for electrically connecting the negative electrode 24 of the dry battery 20 and one terminal of the lamp. It has a metal cylindrical structure.

A plurality of acupressure protrusions 102 are formed on the outer surface of the conductive container 100. This designated protrusion 102 is
It has a role of giving acupressure effect to the palm at the time of gripping, and quickly radiating the heat transferred from the inside to the atmosphere by increasing the surface area. Also, the effect that the flashlight does not slip out of the palm is obtained.

A female screw 104 is formed on the inner side of the front end portion of the conductive storage cylinder 100, and a stopping jaw 106 is formed on the inner side surface behind the portion on which the female screw 104 is formed. A female screw 108 is formed inside the rear end portion (see FIGS. 5 and 6).

As shown in FIG. 2, the head portion 200 includes a head cap 210, an insulating tube 220, and a lamp module 2.
30, the first connecting conductor 240, the second connecting conductor 250, the lens 260, and the heat dissipation metal cap 270.

The head cap 210 is formed with a hole 212 through which a light beam is emitted on the front surface, a stopping jaw 213 is formed at the leading edge, and an "O" ring 214 and a transparent lens 216 are formed from the inside of the stopping jaw 213 to the rear. Are sequentially mounted to form a transparent window through which the light beam is emitted.

A male screw 218 is formed on the outer surface of the rear end portion of the head cap 210, and the male screw 218 and the conductive housing 1
00 female thread 104 is screwed. When screwed together, the transparent lens 216 includes the stopping jaw 213 and the insulating tube 2.
It is pressure-bonded and fixed between the tip of 20. Therefore, the “O” ring 214 is provided with the stopping jaw 213 and the transparent lens 2
From 16 is sealed from the outside.

The insulating cylinder 220 is a plastic injection product and supports the lamp module 230, the first connecting conductor 240, the second connecting conductor 250 and the lens 260. The lamp module 230 is detachably coupled to the inside of the rear end of the insulating cylinder 220, and the lens 260 is detachably coupled to the inside of the tip of the insulating cylinder 220.

A slot 222 is formed in the outer surface of the insulating cylinder 220 in the axial direction, and the second connecting conductor 25 is formed in the slot 222.
0 is inserted from the rear and fastened.

A plurality of right-triangular support pieces 224 having a predetermined length in the axial direction and having a shorter length toward the center are formed on the inner surface of the insulating cylinder 220 to support the rear surface of the lens 260. On the other hand, it supports the front surface of the lamp module 230.

The lamp module 230 is the US Lumil.
The eds Luxeon ™ star structure is used. The star has a heat dissipation metal layer 234 formed on the rear surface of the substrate (MCPCB) 232 and a single LED 236 on the center of the front surface.
Is provided, and six terminals 238, 23 are radially provided around the
9 has a structure arranged. The first terminal 238 is an LED
The two first solder electrodes 238 a on the left and right are electrically connected to the first terminal 238. The second terminal 239 is connected to the cathode electrode of the LED 236, and the two left and right second solder electrodes 239a are electrically connected to the second terminal 239.

The star-shaped substrate structure has a structure for facilitating heat dissipation through the space between the radiating protrusions. The heat dissipation metal layer 234 is formed of an aluminum coating layer having excellent thermal conductivity.

The first connecting conductor 240 has a U-shaped bent structure, and is connected so that the side surface of the substrate 232 is inserted so that the solder electrode 238a of the substrate 232 and the rear heat dissipation metal layer 234 are electrically connected. To do. Therefore, in the present invention,
The heat radiating metal layer 234 is used as a heat radiating plate by the first connecting conductor, and at the same time is used as a plus pad electrically connected to the plus terminal of the dry battery.

The second connecting conductor 250 has a first bent portion 2 into which the rear end 226 of the slot 222 of the insulating cylinder 220 is inserted.
First extending from 52 along the inside of the slot 222
Including end 254. The first end portion 254 is bent in a convex shape and has an elastic structure so as to further protrude from the outer surface of the insulating cylinder 220. Such an elastic structure has a head cap 2
Ensures electrical contact when contacting the inner surface of 10.

The second terminal 256 extending forward from the first bent portion 252 along the inner surface of the insulating cylinder 220 is bent backward again to form the second bent portion 258, which is continuously inclined toward the center. The second solder electrode 23
9a is soldered and fixed. Second bent portion 25
The end 8 of the second terminal 256 is elastically contacted with the second solder electrode 239a to form an elastic structure for ensuring reliable electrical contact.

The lens 260 is a collimator.
Attor) structure. Such a collimator structure lens structure is disclosed in WO 00/24062 and WO 01 /
Structures similar to 51847, WO 02/52656, etc. are disclosed.

The collimator lens 260 is a convex lens that is deformed so as to collect light and irradiate a light beam that is focused in the front direction. The front surface of the collimator lens 260 is a flat or concave parabolic surface 262. It has a convex projection 264, a rear surface forms a convex paraboloid 266, and a structure in which a slot 268 is formed in the center. Therefore, the light beam emitted to the side in the slot 268 is reflected by the convex paraboloid 266, refracted forward, and is converged in the axial direction by the optical characteristics of the convex lens forming the concave paraboloid 262 to go straight. . In addition, the light beam emitted forward travels straight forward while being concentrated in the axial direction by the convex lens structure that forms the convex protrusion in the center. Therefore, the light emitted from the LED 236 passes through the collimator and is converged forward and has a straight-line property of going straight, thereby increasing the brightness.

The heat-dissipating metal cap 270 has an insulating material 272 having excellent thermal conductivity on the heat-dissipating metal layer 234 on the rear surface of the substrate 232.
Attached via (shown in Figure 5a). The heat radiating metal cap 270 is in contact with the inner surface of the conductive housing 100 and transfers the heat of the heat radiating metal layer 234 to the conductive housing 100 to radiate the heat to the outside. Therefore, the heat dissipation metal cap 2
70 increases the heat dissipation efficiency to suppress the rise in the temperature of the junction of the LED and maintain the optical characteristics even during long-term use. In addition, the heat dissipation function allows the current of several hundred mA provided from the dry cell to be applied to the light emitting diode as it is without any limitation, and the light emitting diode can be driven with maximum brightness.

As the insulating material 272, an insulating adhesive or a double-sided insulating tape having excellent thermal conductivity and electrically insulating properties is used. The insulating adhesive may be any conventional heat dissipative insulating adhesive that is commercially available.

The heat radiating metal cap 270 has a hole 2 at the center thereof so that the positive electrode of the dry battery may be connected to the heat radiating metal layer.
74 is formed. The heat-dissipating metal cap 270 has a cap structure that surrounds the rear end of the insulating cylinder and has its tip in contact with the rear end of the head cap 210.

Therefore, after the lens 260, the lamp module 230, the first connecting conductor 240, and the second connecting conductor 250 are assembled to the insulating cylinder 220, the heat dissipation metal cap 270 is attached to the rear surface of the lamp module 230 through an insulating adhesive. Here, the central hole 2 of the heat dissipation metal cap 270
The insulating adhesive is not applied to the portion of the heat dissipation metal layer 234 corresponding to 74.

A head cap 210 is provided with such an assembly.
When it is inserted from the rear side, the insulating cylinder 220 is completely surrounded by the head cap 210 and the heat dissipation metal cap 270, and is assembled so as not to be seen from the outside.

The head part 200 assembled in this way is screwed to the tip of the conductive container 100. At the time of screwing, the heat dissipation metal cap 270 is tightly coupled to the stopping jaw 106 of the conductive housing 100 with the rear edge portion thereof, and the side surface is also in surface contact with the intermediate fit of the inner surface of the conductive housing 100. To be done. Therefore, the heat-dissipating metal cap 270 is attached to the conductive storage cylinder 1.
00 to ensure sufficient thermal contact.

As shown in FIG. 1, a push button 390 is provided on the rear surface of the rear cap 300, and the push button 390 is covered by the rubber cap 400. Further, a connection hole 302 is formed on the side surface of the rear cap 300, and a string 304 for hanging on the wrist is fastened to the connection hole 302.

As shown in FIG. 3, the tail cap 300 includes a main body 310, an outer cylinder 320, an intermediate pipe 330, an inner pipe 340,
Conductor piece 350, conductor rod 360, first spring 370,
The second spring 380 and the push button 390 are included.

The main body 310 has a cylindrical shape with a hole 312 in the center.
Is formed, and a hole 314 having a smaller diameter than the hole 312 is formed at the base of the hole 312. A male screw 316 is formed on the outer surface of the tip of the body 310. The male screw 316 is screwed to the female screw 108 at the rear end of the conductive storage cylinder 100. A recess 318 is formed on the rear surface of the main body 310, and the space of the recess 318 communicates with the space of the hole 312 through the hole 314.

The outer tube 320 is a plastic injection material, and the guide slot 322 is formed on the inner wall thereof. Teeth having a first inclined surface 326 and a second inclined surface 328 are formed at the tips of the protrusions 324 between the guide slots 322.

The intermediate pipe 330 is inserted into the outer pipe 320, the rear end 332 thereof extends to the space of the recess 318, and the outer wall of the front end 334 is slid forward and backward along the guide slot 322 of the outer pipe 320. 336 is formed. Teeth 338 are formed at the tip 334 of the intermediate tube 330.

The inner tube 340 is inserted into the intermediate tube 330, the edge 344 is formed at the tip 342, and the tooth 34 that meshes with the tooth 338 at the tip of the intermediate tube 330 is formed at the rear edge of the edge 344.
6 is formed. In addition, a guide protrusion 348 is formed on the outer surface of the edge 344. The guide protrusion 348 is provided with the teeth 338 and the teeth 346 meshed with each other, and
It is formed at a position that is more than half a pitch away from. Therefore, the inner pipe 340 is slid back and forth along the guide slot 322 of the outer pipe 320 similarly to the intermediate pipe 330.

The conductor piece 350 is a star-shaped metal piece having a hole 352 formed in the center thereof, and has a role of fixing the outer tube, the intermediate tube, and the inner tube assembly in the hole 312 of the main body 310, and a role of an electric conductor. Have. The conductor piece 350 has a hole 312.
And is electrically coupled to the body 310.

The conductor rod 360 is a metal rod, and the rear end 362 of the conductor rod 350 is firmly connected to the inner pipe 340 through the perforation 352 of the conductor piece 350 to form a movable body that moves back and forth like the inner pipe 340. . Tip 364 of conductor rod 360
A ring edge 366 is formed at the rear end of the first spring 370 to which the rear end of the first spring 370 is reliably electrically contacted and fixed.

The tip of the first spring 370 contacts with or separates from the negative electrode of the dry battery.

The second spring 380 is inserted into the outer surface of the rear end 332 of the intermediate tube 330 extending into the space of the recess 318.

The push button 390 is disk-shaped and has a hole 392 formed in the center of the front surface. The rear end 332 of the intermediate pipe 330 is fitted and fixed in the hole 392. Push button 3
90 is moved back and forth in the recess 318 with the intermediate tube 330.

As shown in FIG. 4, the dry battery holder or cartridge 500 includes AAA type dry batteries 20a, 20b, 2
The length of the battery is slightly longer than the length of 0c, and the diameter of the battery is approximately twice the diameter of the AAA battery.
0c is stored so as to be connected in series. Each dry battery is accommodated through the three openings 502 on the side surface of the cylindrical structure.

The cartridge 500 is roughly divided into the front plate 5
10, support 520, rear plate 530, positive conductor 540,
The negative conductor 550 is included.

Three support bases 520 extend rearward from the rear surface of the front plate 510 and are integrally formed. The back plate 530 is connected to the free end of the support 520 by screws 560.

A front side of the front plate 510 has a hole 513 in the center.
An insulating cap 512 having a. Front plate 510
The front plate 510 is provided with a U-shaped connecting conductor piece 514 that is inserted from the side and is in surface contact with the front surface and the rear surface.

The rod-shaped conductor 54 which is the plus conductor 540.
0 is electrically contacted with the connecting conductor piece 514 through the spring 542 inserted in the front side of the front surface of the connecting conductor piece 514. The rod-shaped conductor 540 is the hole 5 of the insulating cap 512.
The front plate 51 is provided so that its tip is projected through 13
It is set to 0. The rod-shaped conductor 540 is elastically moved back and forth by the spring 542.

A spring 516 is provided on the rear surface of the front plate 510. One end of the spring 516 is in contact with the negative electrode of the dry battery 20a, and the other end is in contact with the positive electrode of the adjacent dry battery 20b by extending in a direction perpendicular to the direction in which the spring is compressed.

A hole 532 is formed in the center of the rear plate 530. Sleeve conductor 55 that is the negative conductor 550
0 is inserted into the perforation 532, and the tip is widened outward and fixed to the edge of the rear plate 530 around the perforation 532. Springs 534 and 536 are provided on the front surface of the rear plate 530. One end of the spring 534 is in contact with the negative electrode of the dry battery 20b, and the other end is fixed and electrically connected to the tip of the sleeve conductor 550. One end of the spring 536 is in contact with the negative electrode of the dry battery 20c, and the other end is in contact with the dry battery 20c.
a is contacted with the positive electrode. The positive electrode of the dry battery 20c is brought into contact with the other end of the connecting conductor piece 514.

With such a structure, the dry batteries 20a, 20
b and 20c are connected in series between the rod-shaped conductor 540 and the sleeve conductor 550.

The dry batteries 20a, 20b, 20c are inserted in the space of the opening 502 between the three support bases 520 and arranged in parallel.

The dry battery cartridge 500 thus constructed is inserted into the conductive storage cylinder 100. The tip of the rod-shaped conductor 540 has a central hole 2 of the heat dissipation metal cap 270.
The sleeve conductor 550 is electrically contacted with the heat dissipation metal layer 234 exposed at 74, and the rear end of the sleeve conductor 550 is electrically attached to or separated from the first spring 370 of the tail cap 300.

The power on / off operation will be described below with reference to FIGS. 5 and 6.

When the push button 390 is pressed, the intermediate pipe 3
30 advances along the guide slot 322 of the outer tube 320. The inner tube 340 is also moved forward, and the guide projections 3 on the outer surface
When 48 comes out of the guide slot 322, the pressure of the first spring 370 causes the first tooth of the outer tube 320 to move.
The inner pipe 340 meshes with the intermediate pipe 330 while rotating rightward by a half pitch along the inclined surface 326. When the force pushing the intermediate pipe 330 is removed, the restoring force of the second spring 380 causes the intermediate pipe 330 and the push button 390 to move backward, but the guide protrusion 348 of the inner pipe 340 is rotated by a half pitch. In the state in which the first inclined surface 326 is further rotated rightward by a half pitch and further rotated rightward by one pitch, the vehicle does not move backward, and a stable forward state (power-on state) is maintained. Here, while the conductor rod 360 is slightly eccentric due to the pressure of the first spring 370,
It is in close contact with 50 and is electrically contacted.

When the push button 390 is pressed again, the intermediate pipe 330 moves forward to advance the inner pipe 340 to the position above the second inclined surface 328 top position. Then, the inner pipe 340 rotates a half pitch to the right and moves slightly backward. And meshes with the teeth of the intermediate tube 330. When the intermediate pipe 330 is restored to its original position, the inner pipe 3
Since 40 moves rightward by a half pitch on the second inclined surface 328 and the guide protrusion 348 is inserted into the guide slot 322, the restoring force of the first spring 370 causes the vehicle 40 to move backward. Away from the sleeve conductor 550 of 500. Therefore, the inner pipe 340 maintains a stable reverse drive state (power-off state).

FIG. 7 is an external perspective view of a modified embodiment of the flashlight according to the present invention. The flashlight 30 of the modified embodiment has a structure in which the outer surface of the conductive housing cylinder 110 having no acupressure protrusion on the outer surface is covered with an elastic skin 112 having acupressure protrusion 114, for example, a rubber pipe.

FIG. 8 is an external perspective view of still another modified embodiment of the flashlight according to the present invention. In the flashlight 40 of this modified embodiment, the outer surface of the conductive housing 120 having no acupressure protrusion on the outer surface is knurled (kn).
urling) 122 processing to prevent slipping during gripping.

<Embodiment 2> FIG. 9 is an external perspective view of another embodiment of the flashlight according to the present invention.
FIG. 3 is an exploded perspective view. The flashlight 60 according to another embodiment uses a C-type dry battery as compared with the flashlights 10, 30, and 40 described above, and the push button switch is different in the structure formed on the side surface which is not the rear end.
Since the structure of the head part is the same as that of the above-described embodiment, the same reference numerals are used and a detailed description thereof will be omitted.

The conductive container 130 has a length longer than the length of three C-type batteries arranged in series, and the inner diameter is larger than the diameter of the C-type batteries. The conductive housing 130 has a metal cylindrical structure to provide a current path for electrically connecting the negative electrode of the dry battery and one terminal of the lamp.

A plurality of rubber rings 132 are provided on the outer surface of the conductive housing 130 to prevent the flashlight from slipping out of the palm when gripping, and also to provide a visual aesthetic effect. Flashlight 7 as shown in FIG.
Rubber ring 132 on the outer surface of the conductive storage tube 140
Alternatively, the surface may be knurled 142.

As shown in FIG. 10, the conductive storage cylinder 130.
A female screw 134 is formed on the inner side of the front end portion and a female screw (not shown) is formed on the inner side of the rear end portion. Conductive storage cylinder 1
A perforation 133 is formed on the outer surface of 30, and the knob 752 of the switch 750 is projected to the outside through the perforation 133.

The tail cap 600 is formed of a metal cylinder having a front end portion having a male screw 602 and a rear end portion having a hole 604. The outer diameter of the rear end portion is the same as the outer diameter of the conductive storage cylinder 130. A recess 606 is formed in the center of the front surface of the tip portion, and one end is inserted into this recess 606 and a spring 608 is mounted so that the other end projects forward from the front surface.

One end of the spring 608 is in close contact with the inner wall of the recess 606 so as to make good electrical contact with the rear cap 600 inside the recess 606. The male screw 602 at the front end is coupled to the female screw formed on the inner surface of the rear end of the conductive storage cylinder 130.

Therefore, the rear cap 600 is coupled to the rear of the conductive storage cylinder 130 and shields the rear of the conductive storage cylinder 130 into which the dry battery is inserted.

When an "O" ring 610 is provided on the boundary surface between the rear portion of the male screw 602 at the front end portion and the rear end portion and the rear cap 600 is completely closed, the inner space of the conductive storage cylinder 130 is sealed.

The negative electrode of the dry battery accommodated in the conductive storage cylinder 130 is pressed and electrically connected to the negative electrode of the dry battery through the spring 608 provided on the front surface of the tail cap 600. To be electrically connected to.

The push button switch assembly 700 comprises a pair of semi-cylindrical cylinders 71 forming a cylindrical insulating case 702.
0,720, spring 730, metal sleeve 74
0, including switch 750. A spring 730 is provided on the front surface of the insulating case 702, and a metal sleeve 74 is provided on the rear surface.
0 is provided, and the knob 752 of the switch 750 is provided so as to slightly protrude on the outer side surface. One terminal of the switch 750 is electrically connected to the spring 730 through a conductive wire 732, and the other terminal is connected to the metal sleeve 740 and a conductive wire 74.
It is electrically connected through 2.

The push button switch assembly 700 is inserted inward from the top of the conductive storage cylinder 130 and provided in an intermediate fitting manner. In the switch 750, the knob 752 is located in the hole 133, and the rubber cover 754 is inserted in the hole 133.
Is applied to cover the knob 752.

Therefore, the push button switch assembly 7
The tail metal sleeve 740 of 00 is electrically contacted with the positive electrode of the dry battery, and the free end of the spring 730 provided at the top comes into contact with the heat dissipation metal layer 234 exposed in the hole 274 of the heat dissipation metal cap 270. . The spring 730 has a heat dissipation metal cap 270 inside the hole 274.
Perforations 27 to prevent electrical contact with
An insulating sleeve 280 is attached to the No. 4.

When the head portion 210 is screwed to the leading end of the conductive housing tube 130, the heat-dissipating metal cap 270 is brought into contact with the inner side surface of the conductive housing tube 130 by the intermediate fitting method to conduct the heat generated from the lamp module 230. It also serves as a heat passage through which the heat is discharged to the outside through the heat storage cylinder 130.

When the knob 752 of the switch 750 is pushed, the electrical contact between the spring 730 and the metal sleeve 740 is turned on / off to control the turning on / off of the light emitting diode of the lamp module.

The above-mentioned single LED type flashlight uses a collimator lens,
By maximizing the focusing of the light beam of a single LED to increase the brightness of the flashlight, and by using a heat-dissipating metal cap, it is possible to effectively raise the temperature of the junction when driving a high-brightness LED of several hundred mA. Since it can be suppressed, the LED can be protected even during continuous long-term use, and uniform brightness can be maintained. Further, by configuring the outer surface of the storage cylinder with the acupressure protrusion, the acupressure effect and the increased surface area enable efficient heat dissipation.

<Third Embodiment> FIGS. 12 to 15 are views schematically showing a power-on / off rotary flashlight according to a preferred embodiment of the present invention.

Flashlight 8 according to an embodiment of the present invention
Reference numeral 0 denotes a conductive storage cylinder 1100, a rear cap 1200, a head cylinder 1300, a head cap 1400, a lamp module 1500, a reflecting mirror 1600, and a heat radiation ring 1700.
including.

The conductive storage cylinder 1100 has a length and a diameter such that three AA size dry batteries 20 can be stored in a series structure, and the negative electrode 24 of the dry battery 20 and the lamp module 150.
It has a metal cylindrical structure to provide a current path for electrically connecting to one terminal of the zero.

The outer surface of the conductive housing 1100 is formed into a sine wave-shaped soft bend 1102 in which the wavelength becomes longer from the tail to the head, and has a structure that matches the extent to which the fingers spread when picked up by the hand. Eggplant like this,
The outer surface bending structure prevents slipping when gripping,
It can enhance the aesthetic effect visually.

A female screw 1104 is formed on the inner surface of the rear end of the conductive housing 1100, and a male screw 11 is formed on the outer surface of the front end.
06 are formed respectively. Male screw 11 formed on the tip
06 is formed by a 3-wire screw. Male screw at the tip 1106
A slot 1108 is formed on the rear side of the slot 1108 in the circumferential direction, and an "O" ring 1110 for sealing is inserted into the slot 1108.

The rear cap 1200 is made of a metal cylinder having a front end formed with a male screw 1202 and a rear end formed with a perforation 1204. The outer diameter of the rear end portion is the same as the outer diameter of the conductive storage cylinder 1100. A recess 1206 is formed in the center of the front surface of the tip portion.
A spring 1208 is attached so that one end is inserted into 206 and the other end is projected forward from the front surface.

One end of the spring 1208 has a recess 1206 at one end.
The inner wall of the recess is closely attached to the rear cap 1200 so as to be electrically contacted with the rear cap 1200. The male screw 1202 at the tip portion is coupled to the female screw 1104 formed on the inner surface of the rear end portion of the conductive housing cylinder 1100.

Therefore, the rear cap 1200 is coupled to the rear of the conductive storage cylinder 1100 and shields the rear of the conductive storage cylinder 1100 into which the dry battery 20 is inserted.

When the "O" ring 1210 is provided on the boundary surface between the rear portion of the male screw 1202 at the front end portion and the rear end portion and the rear cap 1200 is completely closed, the conductive storage cylinder 1100 is closed.
Sealing the interior space of.

A pressure is applied to the negative electrode 24 of the dry battery 20 housed in the conductive storage cylinder 1100 through a spring 1208 provided on the front surface of the tail cap 1200, and at the same time, the conductive storage cylinder 1100 is electrically connected to the dry storage battery 1100.
It is electrically connected to the negative electrode 24 of 0.

The head cylinder 1300 is composed of a metal cylinder including a central portion 1302, a rear end portion 1304, and a front end portion 1306. The inner diameter of the central portion 1302 of the head cylinder 1300 is the same as the outer diameter of the conductive storage cylinder 1100, and a female screw 1308 is formed on the inner surface. The female screw 1308 is formed by a three-wire screw. The rear end 1304 has a central portion 13 as it goes rearward.
02 has an inclined step shape in which the outer diameter gradually decreases from the outer diameter to the inner diameter. The tip portion 1306 is the central portion 130.
2 has a diameter between the inner diameter and the outer diameter, an external thread 1310 is formed on the outer surface, and the stopping jaw 1312 is formed at the boundary between the inner surface of the central portion 1302 and the inner surface of the tip portion 1306. Is formed. An "O" ring 1 is provided at the boundary between the outer surface of the central portion 1302 and the outer surface of the tip 1306.
314 is provided.

Therefore, the female screw 130 of the head cylinder 1300
8 and the male screw 1106 of the conductive storage cylinder 1100 are screwed together, so that the head cylinder 1300 can be moved back and forth along the axial direction. 3 for internal thread 1308 and external thread 1106
Since the head cylinder 1300 is configured by the wire screw, the head cylinder 1300 can be quickly moved back and forth in response to the rotation of the head cylinder 1300. That is, the screw thread is transferred by three pitches when it is rotated once. This structure has a head cylinder 1
Even if the amount of rotation of 300 is small, the length change in the axial direction is increased so that the on / off can be quickly performed.

An "O" ring 1110 is provided between the rear end 1304 of the head cylinder 1300 and the front end of the conductive storage cylinder 1100.
Sealed by.

The head cap 1400 is a metal cylinder whose diameter becomes slightly narrower toward the beginning, and an internal thread 14 is formed on the inner surface.
02 is formed and is detachably coupled to the male screw 1310 of the tip portion 1306 of the head cylinder 1300 in a screw manner. A hole is formed on the front surface of the head cap 1400, and a stopping jaw 1404 is formed on the leading edge, and an "O" ring 1406 and a transparent lens 1408 are sequentially mounted from the inside of the stopping jaw 1404 to the rear side to form a light beam. Form a transparent window that is fired. At the time of screw connection, the transparent lens 1408 is pressure-bonded and fixed between the stopping jaw 1404 and the tip of the head tube 1300. Therefore, "O"
The ring 1406 externally seals between the head cap 1400 and the transparent lens 1408.

The lamp module 1500 has an insulating substrate 15
10, plural light emitting diodes 1520, center terminal 153
0, a ring terminal 1540 and a resistance element 1550.

The insulating substrate 1510 is a circular printed circuit board having copper foil patterns printed on its front and rear surfaces. The insulating substrate 1510 is formed in a disk shape having a diameter smaller than the diameter of the front end of the head cylinder 1300 and larger than the diameter of the rear end thereof. The edge of the insulating substrate 1510 is surrounded by the heat radiating ring 1700 and fixed to the stopping jaw 1312 in the head tube 1300.

There are six light emitting diodes 1520, and the light emitting diodes 1520 are arranged on the front surface of the insulating substrate 1510, one at each vertex of the hexagon. The light emitting diode 1520 has a high brightness of 800 to 3,000 mcd as a white light emitting diode. The light emitting diode 1520 has, for example, a model name NSPW manufactured by Nichia Japan.
500 BS can be used. Here, the white light emitting diode forms a white light beam by applying a yellow phosphor layer on the light emitting surface of the blue light emitting diode.

The heat radiating ring 1700 is made of a metal material having excellent thermal conductivity, has an inner diameter larger than the outer diameter of the ring terminal 1540, and the outer diameter is slightly smaller than the inner diameter of the tip portion of the head tube 1300 and is inserted inside the tip portion. However, it has a size that is closely coupled to the inner surface. The heat dissipation ring 1700 has an L-shaped cross section and surrounds the side surface and the rear edge portion of the insulating substrate 1510 to maximize the contact area and increase the thermal conductivity. Therefore, by transmitting the heat generated from the copper foil pattern on the rear surface of the insulating substrate 1510 to the head tube 1300 to radiate the heat, the light emitting diode 1520 is released.
Prevents the surrounding temperature from rising.

The reflecting mirror 1600 has a cup shape that becomes narrower toward the rear, and an edge 1602 is formed at the tip of the cup entrance, and the edge 1602 touches the tip edge of the head cylinder 1300. The inner surface 1604 of the cup of the reflecting mirror 1600 is a parabolic surface, and six holes 1606 are formed in the parabolic surface 1604 corresponding to the arrangement structure of the light emitting diodes 1520. The light emitting diodes 1520 are inserted into the holes 1606. It is arranged so as to project from the paraboloid 1604.

As shown in FIG. 16, the printed circuit pattern on the front surface of the insulating substrate 1510 is the radiation line pattern 150.
2, an anode line pattern 1504 and a cathode pattern 1506 are included.

The radiation line pattern 1502 is the center 150.
A line 1502b extended from 2a in each of six directions and a line pad 1502c at the end of each line 1502b are included. The line 1502b includes a plurality of light emitting diodes 1520
1502 along the boundary line that divides into six equal to the number of
Radially expanded from a to the edge.

The anode line pattern 1504 has a circular pad 1504a formed at the center of each region divided by the radiation line pattern 1502, and the circular pad 1
An anode line 1504b that runs from 504a toward the adjacent line 1502b, and runs alongside the line 1502b toward the edge in a portion adjacent to the line 1502b, and a line pad 1504c at the end of the line 1504b are included.

The cathode pattern 1506 maintains a constant interval from the emission line pattern 1502 and the anode line pattern 1504, and the emission line pattern 1502.
Anode line pattern 15 in each area divided by
The remaining area excluding 04 is covered. That is, the plurality of cathode patterns 1506 are formed in the largest possible area to help the heat dissipation of the light emitting diode.

A resistance element 1550 is soldered between the line pad 1502c of the radiation line pattern 1502 and the line pad 1504c of the anode line pattern 1504. The resistance element 1550 limits the current supplied to the light emitting diode to several tens of mA, for example, about 50 to 60 mA at a forward driving voltage of 4.5V.

As a light emitting diode, Nichia Japan (Nic
When using the model name NSPW500BS of hia), when the maximum forward current is 30 mA and no resistor is used, a large amount of forward current flows in the initial stage and illuminates considerably brightly. When the temperature of the junction of the light emitting diode rises, the forward current gradually decreases due to the thermal resistance, so that the brightness becomes relatively darker than the initial brightness.

However, in the present invention, the forward current is limited to 50 to 60 mA by using the resistance element 1550, but even if the maximum rated value is set to maximize the brightness, the heat radiation structure of the present invention sufficiently emits light. Since it is possible to prevent the ambient temperature of the diode from rising, it is possible to optimize so as to always maintain uniform brightness even when used for a long time.

As shown in FIG. 17, the printed circuit board on the rear surface is a plus pad 1512 and six anode pads 151.
4, including a minus pad 1516.

The plus pad 1512 is formed in a circular shape at the center of the rear surface, and a hole 1512a is formed at the center. The center terminal 1530 is formed by being covered with solder so as to slightly project to the plus pad 1512. A part of the solder flows through the hole 1512a formed in the center of the solder and is hardened by being electrically connected to the center 1502a of the radiation line pattern 1502 on the front surface.

The six anode pads 1514 are circular pads 1504 of the anode line pattern 1504 on the front surface in a circle, which are arranged at equal intervals around the plus pad 1512.
It is formed corresponding to each a. Anode pad 1514
A perforation 1514a is formed in each center.

The ring-shaped minus pad 1516 has six anode pads 15 on the outside of the plus pad 1512.
The light emitting diode 152 is formed to surround 14
0 anode lead wire 1522 and cathode lead wire 15
As many as 24 intervals, six punched holes 1516a corresponding to positions spaced from the six punched holes 1514a are formed.
The ring-shaped minus pad 1516 is formed in the largest possible area and has a role of radiating heat generated from the light emitting diode 1520 to the outside.

A ring-shaped minus pad 151 corresponding to the perforation 1514a formed in the anode pad 1514.
The anode lead wire 1522 and the cathode lead wire 1524 of the light emitting diode corresponding to the holes 1516a of No. 6 are inserted from the front surface and pulled out to the rear surface. The lead wire pulled out to the rear surface is left for a predetermined length, about 1 to 2 mm, from the rear surface, and the other portions are cut. Therefore, a plurality of white light emitting diodes are arranged on the front surface of the insulating substrate so that the light beam is directed forward.

The ring terminal 1540 has a plurality of perforations 1516a of the minus pad 1516 on the rear surface of the insulating substrate 1510.
The plurality of cathode lead wires 1524 projecting through are covered with solder, expanded in the circumferential direction, and formed so as to slightly project rearward. The solder portion may be in complete contact with an adjacent portion to form a circle, or may be formed in a dotted line ring state with the middle cut as shown in FIGS. 18 and 19. Here, the minus pad 1516 and the cathode pattern 1506 are electrically connected by the solder that has flowed to the front surface through the perforation 1516a and has become hard.

Aperture 1514 of Anode Pad 1514
When the anode lead wires 1522 of the light emitting diodes 1520 that are respectively projected through a are covered with solder, a part of them rides on the perforations 1514a and flows to the front surface to become hard,
Circular pad 1 on the front anode line pattern 1504
It is electrically connected to 504a.

Therefore, in the power-on state and the electrically connected state of the present invention, as shown in FIG. 15, the dry battery positive electrode-center electrode 1530-radiation line pattern 1502-resistive element 15 is formed.
50-Anode line pattern 1504-Anode lead wire 1522-Light emitting diode 1520-Cathode lead wire 1524-Ring terminal 1540-Conductive container 11
00-rear cap 1200-spring 1208-dry battery negative electrode.

Therefore, as shown in FIG. 15 and FIG.
Power on / off switching is performed by turning on / off the contact between the ring terminal 1540 and the tip 1112 of the conductive housing 1100.
Be off. That is, the ring terminal 1540 and the tip 1112 of the conductive storage cylinder 1100 are moved by the relative reciprocating motion of the head cylinder 1300 and the conductive storage cylinder 1100 due to the rotation.
The contact between them will be separated or attached.

20 and 21 show printed circuit patterns of an insulating substrate when four light emitting diodes are made into a lamp module, and FIGS. 22 and 23 are insulating substrates when three light emitting diodes are made into a lamp module. 2 shows a printed circuit pattern of the.

As the number of light emitting diodes decreases, the distance between the light emitting diodes increases, so that the diameter of the concentric circles in which the light emitting diodes are arranged becomes smaller and narrower, and the arrangement space of the resistor element arranged between them also becomes an edge. It moves to the center from and is arranged in the middle part. Therefore, the cathode pattern on the front surface is not divided into the equally divided regions, but is integrated into one at the edge portion to maximize the surface area of the pattern for heat dissipation.

<Fourth Embodiment> FIGS. 24 and 25 are views showing another embodiment of the multi-LED flashlight according to the present invention. The other embodiment <Embodiment 4> is different from Embodiment 3 described above in the structure in which a push button switch is provided on the rear cap. The rear cap including the rear push button switch is the same as the rear cap 300 of the first embodiment.

The male screw 316 of the rear cap 300 of the rear push button type flashlight 90 is coupled with the female screw 1104 of the rear end portion of the conductive storage cylinder 1100.

Therefore, the rotation method of the third embodiment requires two hands to rotate the head cylinder and the conductive storage cylinder for power on / off operation, but the rear push button method of the fourth embodiment does. Since the push button can be operated with the thumb of the hand, the power can be turned on / off with one hand.

As shown in FIG. 25, in the flashlight 90 of the fourth embodiment, as compared with the flashlight 80 of the third embodiment, the head cylinder 1300 and the conductive storage cylinder 1100 are completely connected, and the ring terminal 1540 and the tip 1112 are connected. It is fixed so that it is always in contact.

FIG. 26 shows another embodiment of the lamp module according to the present invention. In a lamp module according to another embodiment, only a plurality of light emitting diodes are arranged without a printed circuit pattern on a front surface of an insulating substrate 1560 having no resistive element. A star-shaped plus pad 1562 and a ring-shaped minus pad 1564 are formed in the center of the rear surface. A perforation 1566 is formed at the end of the radial branch of the star-shaped plus pad 1562, and the ring-shaped minus pad 1564 is perforated corresponding to the perforation 1566.
68 are formed respectively. The anode lead wire of the light emitting diode is drawn rearward from the front surface through the hole 1566, and the cathode lead wire is drawn rearward from the front surface through the hole 1568.

The extracted anode lead wire and cathode lead wire are projected backward by only about 1 to 2 mm, and the remaining lead wires are cut. The anode lead wire is commonly connected to the plus pad 1562 and the cathode lead wire is commonly connected to the minus pad 1564 by covering the protruding lead wire with solder.

A separate solder protrusion is formed at the center of the plus pad 1562 to form a center terminal 1570, and a solder ring is formed along a concentric circle connecting the cathode lead wires to form a ring terminal 1572.

27 and 28 show a modified reflecting mirror structure.

The reflecting mirror 1610 of FIG. 27 has a cylindrical shape without a base, and a reflecting layer 1574 is formed on the front surface of the insulating substrate 1560 so that the reflecting mirror 1610 also serves as the base of the reflecting mirror 1610. The rear end of the reflecting mirror is tapered and has an inclined surface that becomes narrower toward the rear. The rear end 1612 of the reflecting mirror 1610 has a diameter enough to accommodate all six light emitting diodes.

The reflecting mirror 1620 of FIG. 28 has a cylindrical shape having a base 1622, and has six holes 1624 into which the corresponding light emitting diodes are inserted in the base 1622. Reflector 1
620 differs from the reflecting mirror 1610 in that the inner surface is not a parabolic surface.

FIG. 29 is a diagram showing still another embodiment of the present invention. Flashlight 95 of another embodiment
Is different from the flashlights 80 and 90 described above in that the head cylinder and the conductive storage cylinder are integrally formed, and a push button type rear cap is assembled at the rear end of the integrated body, and other parts are the same. Therefore, the same reference numerals are used and a detailed description is omitted.

The conductive storage cylinder 1900 has a head portion 1910.
And a housing portion 1920, and a stopping jaw 1912 is formed at a boundary between the head portion 1910 and the housing portion 1920, and the lamp module 1 is formed on the stopping jaw.
The ring terminal 1540 of 500 is assembled in direct contact. The power is turned on and off with a push button switch at the rear.

Although the embodiment of the present invention has been described in detail above, the present invention is not limited to this, and the idea and spirit of the present invention are deviated from those having ordinary knowledge in the technical field to which the present invention belongs. The embodiments of the present invention can be modified or changed without the need.

[0171]

According to the present invention, by constructing a connecting structure between a dry cell and a lamp by constructing a plurality of light emitting diode lamp modules, the number of parts is minimized and workability is improved during assembly work. Since the productivity can be maximized, it is economical and the defect rate and the failure rate can be minimized.

Further, the problem of heat generation due to an increase in current supply when a plurality of high-brightness light emitting diodes are used can be solved by releasing the heat to the outside of the housing through a heat dissipation metal cap or a heat dissipation ring. Since the light can be supplied, the light emitting diode can be driven more brightly and the uniform brightness can always be maintained, the reliability of the product can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view schematically showing an embodiment of a single LED flashlight of the present invention.

FIG. 2 is an exploded perspective view of the flashlight of FIG.

3 is an exploded perspective view of the tail cap of FIG. 2. FIG.

FIG. 4 is an exploded perspective view of the dry battery cartridge of FIG.

5 is a cross-sectional view schematically showing AA ′ in FIG. 1 in a power-off state.

FIG. 6 is a cross-sectional view schematically showing AA ′ in FIG. 1 in a power-on state.

FIG. 7 is a perspective view schematically showing a flashlight in a modified example according to the embodiment of the present invention.

FIG. 8 is a perspective view schematically showing a flashlight according to another modification of the embodiment of the present invention.

FIG. 9 is a perspective view schematically showing another embodiment of the single LED flashlight of the present invention.

FIG. 10 is an exploded perspective view of FIG.

FIG. 11 is a perspective view schematically showing a flashlight according to a modified example of another embodiment of the present invention.

FIG. 12 is a perspective view schematically showing an embodiment of a multi-LED flashlight of the present invention.

FIG. 13 is an exploded perspective view schematically showing the flashlight of FIG.

FIG. 14 is a cross-sectional view schematically showing AA ′ in FIG. 1 in a power-off state.

FIG. 15 is a cross-sectional view schematically showing AA ′ in FIG. 1 in a power-on state.

FIG. 16 is a view showing a 6-LED type front printed circuit pattern of the insulating substrate of the present invention.

FIG. 17 is a view showing a 6-LED type rear surface printed circuit pattern of the insulating substrate of the present invention.

FIG. 18 is a view showing a side structure of a 6-light-emitting diode type lamp module having an insulating substrate according to the present invention.

FIG. 19 is a view showing the back structure of a post-soldering lamp module of the 6-light emitting diode type of the insulating substrate of the present invention.

FIG. 20 is a diagram showing a four-light emitting diode type front printed circuit pattern of an insulating substrate of the present invention.

FIG. 21 is a diagram showing a backside printed circuit pattern of a 4-light-emitting diode system of the insulating substrate of the present invention.

FIG. 22 is a diagram showing a three-light emitting diode type front printed circuit pattern of the insulating substrate of the present invention.

FIG. 23 is a diagram showing a three-light emitting diode type rear surface printed circuit pattern of the insulating substrate of the present invention.

FIG. 24 is a perspective view of a rear push-button flashlight that is another embodiment of the multi-LED flashlight according to the present invention.

25 is a cross-sectional view taken along the line BB of FIG.

FIG. 26 is a view for explaining a modified embodiment of the lamp module of the present invention.

FIG. 27 is a perspective view showing another embodiment of the reflecting mirror of the present invention.

FIG. 28 is a perspective view showing still another embodiment of the reflecting mirror of the present invention.

FIG. 29 is a view showing a cross-sectional structure of still another embodiment of the multi-LED flashlight of the present invention.

[Explanation of symbols]

10, 30, 40, 60, 70, 80, 90, 95
Flashlight 20, 20a, 20b, 20c Dry battery 100, 110, 120, 130, 140, 1100,
1900 Conductive Storage Cylinders 102, 114 Acupressure Protrusions 104, 108 Female Threads 106 Stopping Jaws 112 Elastic Skins 122, 142 Knurling 132 Rubber Rings 133, 274 Holes 200 Heads 210 Head Caps 220 Insulation Cylinders 222 Slots 230 Lamp Modules 232 Insulation Substrates 234 Heat dissipation metal layer 236 Light emitting diode 240 First connection conductor 250 Second connection conductor 260 Collimator lens 270 Heat dissipation metal cap 272 Insulation material 300, 600 Rear cap 602, 1106, 1202, 1310 Male screw 320 Outer tube 330 Intermediate tube 340 Inner tube 360 Conductor rod 370 First spring 380 Second spring 510 Front plate 530 Rear plate 1308, 1402 Female screw 1550 Resistance element 1600, 1610, 1620 Reflector

   ─────────────────────────────────────────────────── ─── Continued front page    (31) Priority claim number 2003-003493U (32) Priority date February 6, 2003 (February 2.6, 2003) (33) Priority country Korea (KR)

Claims (30)

[Claims] 1. A conductive storage cylinder for storing at least one or more dry batteries, and a dry battery removably coupled to a rear end of the conductive storage cylinder and stored in the conductive storage cylinder through a spring. In a flashlight provided with a conductive rear cap for electrically connecting the negative electrode and the conductive storage cylinder, and a head portion detachably coupled to the tip of the conductive storage cylinder, the head portion is A conductive head cap that has a transparent window on the front surface through which a light beam is emitted and is detachably coupled to the tip of the conductive storage cylinder; and a front end portion of the head cap facing the transparent window at the rear end of the head cap. And an insulating tube having an outer wall formed with axial slots, and an inner rear end of the insulating tube, a light-emitting diode is provided at the center of the front surface, and an LED of the light-emitting diode is provided around the light-emitting diode. A cathode electrode terminal and a cathode electrode terminal are formed,
A lamp module formed of an insulating substrate coated with a heat-dissipating metal layer connected to the positive electrode of the dry battery on a rear surface thereof, and the anode module of the insulating substrate and the heat-dissipating metal layer are electrically connected to each other. A U-shaped first connecting conductor into which a side surface of the insulating substrate is inserted; one end provided in a slot of the insulating cylinder and electrically contacting an inner side surface of the head cap; and the other end extending inside the insulating cylinder. A second connecting conductor connected to a cathode electrode terminal of the light emitting diode module, and a second connecting conductor that is assembled inside the insulating cylinder between the transparent window of the head cap and the insulating substrate of the lamp module, and is emitted from the light emitting diode. A light emitting diode flashlight, comprising: a collimator lens for refracting a light beam forward. 2. The head part is attached to the heat dissipation metal layer on the rear surface of the insulating substrate with an insulating material, which is an insulating adhesive having excellent thermal conductivity and electrically insulating characteristics, interposed therebetween, The light emitting diode according to claim 1, further comprising a heat dissipation metal cap that is in contact with an inner surface of the storage case and transfers heat of the heat dissipation metal layer to the conductive storage case to release the heat to the outside. Flashlight. 3. The light emitting diode flashlight of claim 2, wherein the heat dissipation metal cap has a hole formed in a center thereof so that a positive electrode of the dry battery is connected to the heat dissipation metal layer. 4. The light emitting diode flashlight of claim 3, wherein the heat dissipation metal cap has an insulating ring fitted in the hole to prevent the positive electrode of the dry battery from coming into contact with the heat dissipation metal cap. 5. The light emitting diode flashlight according to claim 2, wherein the heat-dissipating metal cap surrounds a rear end of the insulating cylinder, and a front end of the heat-dissipating metal cap contacts the rear end of the head cap. 6. The light emitting diode flashlight of claim 1, wherein the length of the conductive storage cylinder is equal to or slightly longer than the width of a palm of a normal adult. 7. The light emitting diode flashlight according to claim 6, wherein a plurality of acupressure protrusions are formed on an outer surface of the conductive housing. 8. The light emitting diode flashlight of claim 6, wherein an outer surface of the conductive housing is surrounded by an elastic skin having a plurality of acupressure protrusions. 9. The light emitting diode flashlight of claim 6, wherein an outer surface of the conductive housing is knurled. 10. The light emitting diode flashlight of claim 1, wherein a plurality of supporting pieces for supporting the lens are formed on the inner surface of the insulating cylinder so as to protrude toward the center. . 11. The light emitting diode flashlight of claim 1, wherein one end of the second connecting conductor is formed of an elastic structure for electrically intimate contact with an inner surface of the head cap. . 12. The light emitting diode flashlight of claim 1, wherein the tail cap includes a push button switch. 13. The push button switch is inserted into the rear recess of the rear cap body, moves forward when pressure is applied, and is restored by a spring when the pressure is removed, and a push button inserted into a hole of the body. A moving body that is toggled to one of the forward state and the reverse state each time it is pushed in conjunction with the push operation of the button, and has a hole in the center, and the moving body is limited to the inside of the hole and operates. Fixed to the main body and electrically connected to the main body, the conductor piece is coupled to the movable body through a hole in the conductor piece, and is moved back and forth in conjunction with the movable body. The negative electrode of the dry battery housed in the flexible housing is electrically contacted with the conductor piece, and a conductive rod is provided so as to be separated from the negative electrode in a reverse drive state and cut off the electrical contact. Emitting diode flashlight according to claim 12,. 14. The light emitting diode flashlight of claim 2, further comprising a dry battery holder housed in the conductive housing. 15. The light emitting diode flashlight of claim 14, wherein the dry battery holder holds three AAA type dry batteries in parallel and electrically connects them in series. 16. The main body of the dry battery holder detachably holding a plurality of dry batteries in parallel and connected in series, and a positive conductor formed on the front surface of the main body and electrically contacting the heat dissipation metal layer. The light emitting diode flashlight of claim 15, further comprising a negative conductor formed on the rear surface of the body and electrically contacting a spring of the tail cap. 17. The conductive storage cylinder has a hole formed in an outer wall of a tip portion thereof, a push button switch is provided inside, and a knob of the push button switch is exposed to the outside through the hole and the hole is formed in the hole. The light emitting diode flashlight according to claim 1, further comprising an elastic knob that covers the knob. 18. The push button switch is housed in the conductive housing cylinder, is divided into two in the axial direction, and is an insulating cylinder that forms a cylinder when combined, and is fixed so as to project to the front surface of the insulating cylinder. A spring electrically contacting the heat dissipation metal layer of the lamp module, a positive conductor fixed to the rear surface of the insulating cylinder and electrically contacting the positive electrode of the dry cell, and a knob on the side surface of the insulating cylinder. The first terminal is electrically connected to the rear end of the spring, and the second terminal is electrically connected to the positive conductor and is switched so as to be switched. The light emitting diode flashlight according to claim 17. 19. The light emitting diode flashlight of claim 18, wherein the conductive storage cylinder has a length that is longer than a length in which three C-type dry batteries are stored in series. 20. A conductive container for accommodating at least one or more dry batteries, and a dry battery removably coupled to a rear end of the conductive container and housed in the conductive container through a spring. A conductive rear cap that electrically connects the negative electrode and the conductive housing, a rear end into which the tip of the conductive housing is inserted, and a tip having a diameter larger than the rear end. Having a threaded connection to the tip of the conductive storage cylinder, so that the tip of the conductive storage cylinder is inserted to a position adjacent to the stopping jaw formed on the inner surface during screw connection. A head cylinder that is moved back and forth along the axial direction of the conductive storage cylinder; a head cap that is detachably coupled to the tip of the head cylinder and has a transparent window for emitting a light beam on the front surface; Insert into head cylinder An insulating substrate fixed and housed in the stopping jaw, a plurality of high-intensity light emitting diodes arranged on the front surface of the insulating substrate so that a light beam is directed forward, and the plurality of high-intensity light emitting diodes formed at the center of the rear surface of the insulating substrate. The anode electrodes of the high-intensity light-emitting diodes are commonly connected and are formed around the center terminal on the rear surface of the substrate, which is in contact with the positive electrode of the dry cell, and the cathode electrodes of the high-intensity light-emitting diodes are common. And a lamp module having a ring terminal connected to the front end of the conductive storage cylinder, and arranged in an internal space formed by combining the head cylinder and the head cap in front of the insulating substrate. A light emitting diode flashlight, comprising: a reflecting mirror that reflects a light beam emitted from a high brightness light emitting diode forward. 21. The head cylinder is made of a metal material having excellent thermal conductivity, and is disposed between the stopping jaw and the insulating substrate to tightly couple the insulating substrate and the head cylinder to each other to form the insulating substrate. 21. The light emitting diode flashlight according to claim 20, further comprising a heat dissipation ring made of a metal material that transfers the heat of the above to the head cylinder. 22. Radially arranged on a front surface of the insulating substrate, electrically connected between a center electrode on a rear surface of the insulating substrate and an anode electrode of each of the plurality of high brightness light emitting diodes, and supplied from the dry cell. The light emitting diode flashlight of claim 20, further comprising a plurality of resistance elements for limiting a driving current of the light emitting diode. 23. A plurality of perforations into which the plurality of light emitting diodes are respectively inserted are formed in the reflecting mirror, and a reflecting surface of the reflecting mirror is a parabolic surface. The light emitting diode flash light described in. 24. A sine wave-shaped bend is formed on an outer surface of the conductive housing, and the sine wave-shaped bend has a shape in which a wavelength becomes longer from the tail cap to the head cylinder. The light emitting diode flashlight according to claim 20. 25. The light emitting diode flashlight of claim 20, wherein the number of the plurality of light emitting diodes is 3 to 10. 26. The light emitting device according to claim 20, wherein the screw connection between the head cylinder and the other end of the conductive storage cylinder has a multi-line screw structure for speeding up the power-on / power-off operation. Diode flash light. 27. The light emitting diode flashlight of claim 20, wherein the conductive storage cylinder has a length longer than a length in which a plurality of dry batteries are connected in series. 28. The head cylinder and the conductive storage cylinder are fixed to each other, the ring terminal and the tip of the conductive storage cylinder are always kept in contact with each other, and the rear cap includes a push button switch. The light emitting diode flashlight according to claim 20. 29. The push button switch is inserted into the rear concave portion of the rear cap body, moves forward when pressure is applied, and is restored by a spring when pressure is removed, and a push button inserted into a hole of the body. A moving body that is toggled to one of the forward state and the reverse state each time it is pushed in conjunction with the push operation of the button, and has a hole in the center, and the moving body is limited to the inside of the hole and operates. Fixed to the main body and electrically connected to the main body, the conductor piece is coupled to the movable body through a hole in the conductor piece, and is moved back and forth in conjunction with the movable body. The negative electrode of the dry battery housed in the flexible housing is electrically contacted with the conductor piece, and a conductive rod is provided so as to separate from the negative electrode and lose electrical contact in the reverse drive state. Emitting diode flashlight according to claim 28,. 30. A head portion and a storage portion, wherein a stopping jaw is formed at a boundary between the head portion and the storage portion,
A conductive storage cylinder for storing at least one or more dry batteries in the storage portion, and a dry battery that is detachably coupled to the rear end of the conductive storage cylinder and is stored in the conductive storage cylinder through a spring. A rear cap including a push button switch that electrically switches a negative electrode and the conductive housing, and a head having a transparent window that is detachably coupled to the tip of the head section and that emits a light beam on the front surface. A cap, an insulating substrate that is inserted into the head portion and fixed and stored in the stopping jaws, a plurality of light emitting diodes arranged on the front surface of the insulating substrate so that a light beam is directed forward, and the center of the rear surface of the substrate A plurality of light-emitting diodes, the anode electrodes of which are commonly connected to each other, and which is slightly protruded rearward to contact the positive electrode of the dry cell. A lamp module having a child and a ring terminal formed around a center terminal on the rear surface of the substrate and having cathode electrodes of the plurality of light emitting diodes commonly connected and electrically contacting the stopping jaws; and the insulating substrate. A reflecting mirror disposed in an internal space formed by combining the head portion and a head cap in front, and reflecting forward a light beam emitted from a plurality of high-intensity light emitting diodes. Light emitting diode flash light.