KR101155449B1 - CAR ROOM 12V or 24V LED LAMP FOR ADJUSTING BRIGHTNESS - Google Patents

Abstract

The present invention provides a DC 12V or 24V LED lamp with adjustable brightness. The brightness of the DC 12V or 24V LED lamp is a substrate on which the LED is mounted; A heat sink in which a sliding groove is formed in which the substrate is slidably inserted and fixed, a fastening groove is formed in the outer circumference, and covers a bottom portion of the substrate; A diffusion tube covering an upper portion of the LEDs, and both ends of which are fitted into the fastening grooves; And a pair of sealing caps coupled to both ends of the heat sink and the diffusion tube, having a substrate fixing hole into which both ends of the substrate are inserted and fixed, and having a cylindrical guide protrusion projecting outwardly. A pair of power sockets inserted into and fixed to the guide protrusions of each of the sealing caps and electrically connected by the board and the electric wires, and a pair of power sockets provided on the board and in different directions between the pair of power sockets; Form a current flow line of the, and the resistance value of the pair of current flow line is formed different from each other, and has a brightness control unit for adjusting the brightness of the LEDs differently according to the current flow direction to the pair of power sockets. Accordingly, the present invention provides a stable assembly structure of the overall lighting configuration by fixing the power sockets disposed at both ends of the substrate on which the LEDs are mounted by inserting the guide protrusions protruding from the sealing cap at both ends of the substrate, and the current flow direction. You can selectively adjust the brightness according to.

Description

DC ROOM 12V or 24V LED LAMP FOR ADJUSTING BRIGHTNESS

The present invention relates to a DC 12V or 24V LED lamp of which brightness is controlled, and more particularly, by inserting and fixing a power socket disposed at both ends of a substrate on which the LEDs are mounted, by inserting and fixing a guide protrusion formed at both ends of the substrate to a sealing cap. The present invention relates to a DC 12V or 24V LED lamp whose brightness is controlled to provide a stable assembly structure of the overall lighting configuration and to selectively adjust the brightness according to the current flow direction.

Generally, at least two lamps are installed in the interior of a vehicle to illuminate the interior of the vehicle, for example, a map lamp installed near the top of the driver's seat to illuminate near the driver's seat and a center lamp installed in the center of the vehicle to illuminate the entire interior space. It is provided. In such a room lamp, a heat transfer lamp that is conventionally illuminated by heat generated by heating a filament has been mainly used. In this heat transfer lamp, two electrodes for supply and demand can be divided into a type disposed side by side on one side of the lamp and a type disposed on both sides. The former type is mainly used as a map lamp for low power, and the latter type is above medium power. It is mainly used as a center lamp. The latter type is hereinafter referred to as a double-end cap type.

Korean Patent Application Publication No. 10-2009-0059273 mentions a conventional double-end cap type lamp.

The double-end cap type heat lamp 30 has a filament 38 housed inside a transparent and vacuum glass tube 36, preferably a cylindrical glass tube 36, and a metal material at both ends of the filament 36. Supply electrode cap 32 is mounted to surround the end of the glass tube 36, the supply electrode cap 32 is also made of a cylindrical.

Since the conventional heat transfer lamp 30 is made of a filament which is a thin heating wire, its limit life is relatively short as about 3,000 hours, and there is a problem that the brightness is relatively low compared to power consumption, and mass production is difficult.

In addition, since it is a product using a glass cover, there is a problem that breakage easily occurs severely due to external impact. In addition, there is a problem that the heat generation is high, and the product replacement cycle and maintenance is difficult.

In order to solve this problem, conventionally, a lighting device having a substrate on which LEDs are mounted is implemented. As described above, sockets serving as electrodes are respectively provided at both ends of the substrate on which the LED is mounted. In the related art, a method of fixing an end of the socket to a part of the groove of the substrate is fixed. However, in the case of forming a groove into which a socket is inserted into and fixed to a part of the substrate, these grooves lower the strength of the entire substrate, causing a problem that the substrate itself is easily damaged by an external impact. In addition, there is a problem that the components mounted on the substrate is damaged.

In addition, in a sealing cap which penetrates the socket so as to seal the inside of the substrate and is disposed on both sides of the substrate, a certain tolerance occurs between the sealing cap and the outer circumference of the socket passing therethrough, and thus, a gap generated due to the tolerance. There is a problem that increases the risk of leakage through.

In addition, conventionally, a plurality of via holes were formed on the substrate in order to solve the heat problem due to the characteristics of the LEDs. In this case, the strength of the substrate itself is reduced, and when the socket is connected to both ends of the substrate, the substrate itself is It causes a problem that irreparable damage is caused by external force.

The present invention was created to solve the above problems, an object of the present invention by fixing the power sockets are disposed on both ends of the substrate on which the LED is mounted by inserting the guide protrusions protruding to the sealing cap on both ends of the substrate, It is to provide a DC 12V LED lamp with adjustable brightness in the car to provide a stable assembly structure of the overall lighting configuration.

Another object of the present invention is to provide a DC 12V or 24V LED lamp having a brightness is adjustable to easily perform assembly and disassembly by having a heat sink in which the substrate is sliding insert fixed, and having a diffusion tube detachable to the outer periphery of the heat sink In providing.

Another object of the present invention is to reduce the power consumption rate, to effectively prevent damage by external shocks, to protect the LED mounted on the substrate, and to waterproof the space in which the substrate on which the LED is mounted is installed. To provide a DC 12V or 24V LED lamp with adjustable brightness.

Still another object of the present invention is to provide a heat sink and a heat sink, which is a heat sink, and a DC 12V or 24V LED lamp whose brightness is controlled to easily dissipate heat generated by LEDs to the outside by facilitating heat transfer with each other. Is in.

In a preferred aspect, the present invention provides a DC 12V or 24V LED lamp with adjustable brightness.

The present invention provides a DC 12V or 24V LED lamp whose brightness is controlled. A substrate on which the LEDs are mounted; A heat sink in which a sliding groove is formed in which the substrate is slidably inserted and fixed, a fastening groove is formed in the outer circumference, and covers a bottom portion of the substrate; A diffusion tube covering an upper portion of the LEDs, and both ends of which are fitted into the fastening grooves; And a pair of sealing caps coupled to both ends of the heat sink and the diffusion tube, having a substrate fixing hole into which both ends of the substrate are inserted and fixed, and having a cylindrical guide protrusion projecting outwardly. A pair of power sockets inserted into and fixed to the guide protrusions of each of the sealing caps and electrically connected by the board and the electric wires, and a pair of power sockets provided on the board and in different directions between the pair of power sockets; Form a current flow line of the, and the resistance value of the pair of current flow line is formed different from each other, and includes a brightness control unit for adjusting the brightness of the LEDs differently according to the current flow direction to the pair of power sockets.

Here, the substrate is a rectangular plate-shaped LED mounting region portion on which the LEDs are mounted, a width narrower than the width of both ends of the LED mounting region portion protrudes from both ends of the LED mounting region portion of the pair of power sockets It is preferable to have a rectangular plate-shaped extension region portion inserted into the substrate and fixed to the substrate fixing hole.

In addition, the outer surface of the guide protrusion is preferably provided with a close contact member made of an elastic material so as to be in close contact with the inner surface of the power socket is fitted and fixed.

In addition, a waterproofing material is further applied between the guide protrusion and the power socket, and the waterproofing material is preferably either epoxy or silicone.

In addition, it is preferable that the inner surface of each of the pair of power sockets further includes a projection line projecting along the circumferential direction of the power socket, and a projection groove into which the projection line is fitted is formed on an outer surface of the guide projection. .

In addition, the both sides of the substrate is preferably provided with a fastening pad in close contact with the inner circumference of the sliding groove of the heat sink.

In addition, it is preferable that a hole through which an electric wire electrically connected to the substrate is further formed at an end of the sealing cap and the power socket.

In addition, it is preferable that the brightness of the LEDs when the flow direction of the current forms the cathode at the anode is twice the brightness of the LEDs when the flow direction of the current forms the anode at the cathode.

The brightness controller may include LED driver ICs disposed on the different current flow lines and resistors having different resistance values on the different current flow lines.

The DC 12V or 24V LED lamp may select a color temperature, wherein the color temperature is 3,000K warm white 3,000K, 5000K natural white, and 6000K cool white. It is preferable that one of the LEDs having different color temperatures is selected and mounted on the substrate to form a pair, and the diffusion tube incorporates color temperature from the pair of LEDs.

Moreover, it is preferable that the said electric wire is connected to the both ends of the said board | substrate.

According to the present invention, the power sockets disposed at both ends of the substrate on which the LEDs are mounted are fixed to the guide protrusions protruding from the sealing cap at both ends of the substrate, thereby increasing the strength of the socket and providing a stable assembly structure of the overall lighting configuration. There is an effect that can be provided.

In addition, the present invention has an effect that the substrate is provided with a heat sink that is slidingly inserted fixed, and provided with a diffusion tube detachably attached to the outer periphery of the heat sink can easily perform assembly and disassembly.

In addition, the present invention can reduce the power consumption rate, effectively prevent the damage by the external shock, and protect the LED mounted on the substrate, and also the effect of waterproofing the space in which the substrate on which the LED is mounted There is.

In addition, the present invention facilitates heat transfer between the heat sink and the heat sink, which are heat sinks, so that the heat generated by the light emission of the LEDs can be easily radiated to the outside, thereby not forming a separate via hole in the substrate. There is an effect that can complement the strength of the substrate itself.

1 is an exploded perspective view showing a DC 12V or 24V LED lamp device of the present invention.
FIG. 2 is another exploded perspective view showing coupling with the power socket, sealing cap and substrate of FIG. 1. FIG.
3 is another exploded perspective view showing coupling with the power socket, the sealing cap and the substrate of FIG.
4 is a view showing the top and bottom of the substrate according to the present invention.
FIG. 5 is a diagram illustrating an electrical circuit formed on the substrate of FIG. 4.
6 is a view showing a bridge diode circuit provided in the substrate according to the present invention.

Hereinafter, with reference to the accompanying drawings, it will be described a DC 12V or 24V LED lamp device of the present invention.

1 to 4, the LED lighting apparatus of the present invention includes a substrate 100 on which the LEDs 10 are mounted, and a heat sink that fixes the substrate 100 and covers the bottom of the substrate 100. 200, a diffusion tube 300 covering the upper portion of the substrate 100 (the LED 10 side) and fixed to the heat sink 200, and on both sides of the heat sink 200 and the diffusion tube 300. A pair of sealing caps 400 coupled to each other and fixed at both ends of the substrate 100, a pair of power sockets 500 fixed to an outer portion of the pair of sealing caps 400, and the substrate ( And a pair of current flow lines in different directions between the pair of power sockets 500, and resistance values of the pair of current flow lines are different from each other. Including the brightness control to adjust the brightness of the LEDs 10 in accordance with the current flow direction to the power socket 500 All.

The substrate 100 has a width smaller than both end widths of the LED mounting region 110 formed in a rectangular plate shape, and is formed in a square plate shape from both ends of the LED mounting region 110. It is formed of an extended area portion 120 extending a predetermined length. Here, one or more LEDs 10 are mounted on the top surface of the LED mounting region 110. In addition, a signal pattern through which signals are transmitted from the LEDs 10 is formed over the LED mounting region 110 and the extended region 120.

The substrate 100 is coupled to the heat sink 200. The heat sink 200 has a predetermined length and is formed in a semicircular cross section. In addition, sliding grooves 210 along the longitudinal direction are formed at both ends of the heat sink 200. Here, the substrate 100 may be inserted into the sliding groove 210 to be fixed. Accordingly, the substrate 100 may be fixed to the sliding groove 210 by being inserted into the sliding groove 210 at any one position of one side or the other side of the heat sink 200.

The heat sink 200 is formed of a metal material having a predetermined conductivity such as aluminum, and the heat dissipation protrusions 201 are formed on the outer circumference thereof to increase the contact area with air.

Here, the fastening pad 130 in close contact with the inner circumference of the sliding groove 210 of the heat sink 200 may be further provided on both surfaces of the substrate 100.

When the LEDs 10 mounted on the substrate 100 emit light, a predetermined heat is generated on the substrate 100. The generated heat flows to the edge side of the substrate 100 through the body of the substrate 100. In this case, it is in physical contact with the heat sink 200 made of metal through the fastening pad 130 formed on the substrate 100. Therefore, heat in the substrate 100 is easily transferred to the heat sink 200 through the fastening pad 130, and the heat may be radiated by the plurality of heat radiating protrusions 201.

In this case, since the hole such as a via hole for heat dissipation is not formed in the substrate 100, the strength of the substrate 100 itself may be increased, thereby increasing durability.

In particular, the substrate 100 is provided with a brightness controller, wherein the brightness controller has an LED driver IC (LDI) disposed on the different current flow lines and different resistance values on the different current flow lines. Resistors are placed. The number of resistors can also vary. This can be more clearly understood with reference to FIG. 5.

4 and 5, when current flows from '+' to '-' direction (forward direction), a high resistance such as 1 kiloohm is disposed in the current flow line thereof, thereby from the LEDs 10. The amount of emitted light makes up the first amount of light. In addition, when a current flows along the '+' direction in the '+' direction (reverse direction), a low resistance such as 27 ohms is disposed in the current flow line thereof, so that the amount of light emitted from the LEDs 10 is the first amount of light. It is possible to achieve a relatively higher second light amount. Therefore, in the present invention, the amount of light or the brightness from the LEDs may be selectively adjusted by changing only the direction of current flow.

Preferably, the brightness of the LEDs 10 when the flow direction of the current forms one direction is half of the brightness of the LEDs 10 when the flow direction of the current forms an opposite direction to the one direction. Can be achieved.

Here, one direction means the upper side (positive electrode (+)) to the lower side (cathode (-)) in FIG. 5, and the opposite direction means the direction flowing from the lower side (cathode (-)) to the upper side (positive electrode (+)). .

The brightness of the LEDs according to the direction of the current can be adjusted by adjusting the size of the resistor.

The LED driver IC receives a voltage of 10V to 40V and converts the voltage into a constant voltage (for example, 9V) in which the LED can operate. Therefore, the LEDs can operate stably. That is, the LED driver IC can eliminate the flicker phenomenon in which the LED flickers by applying the same constant voltage to the LEDs whether the current flows in the forward direction or the current flows in the reverse direction.

In addition, fastening grooves 220 are formed along the longitudinal direction of both ends of the heat sink 200.

The diffusion tube 300 forms a predetermined length and its cross section forms a semi-circle shape, and fastening protrusions 310 are formed at both ends thereof. Here, the fastening protrusion 310 is fitted into the fastening groove 220 formed on the outer periphery of both ends of the heat sink 200. Therefore, both ends of the diffusion tube 300 may be fastened and fixed to both ends of the heat sink 200 in a hooked manner. Accordingly, the diffusion tube 300 may cover the upper surface of the substrate 100 to diffuse the light emitted from the LEDs 10 to the outside. Although not shown in the drawings, an arbitrary diffusion pattern for diffusing light is formed on an outer surface of the diffusion tube 300, and the diffusion pattern forms a predetermined region, and different patterns are mixed in each region. It may be formed.

Accordingly, both sides of the substrate 100 along the longitudinal direction thereof are fitted into the sliding groove 210 to be fixed to the heat sink 200, and the diffusion tube 300 covers the upper surface of the substrate 100 while both ends thereof. Hook is fixed to the fastening groove 220 formed on the outer periphery of both ends of the heat sink (200).

As described above, when the substrate 100 is slide-in fixed to the heat sink 200 and the heat sink 200 and the diffusion tube 300 are coupled to each other, both ends of the substrate 100 are coupled to each other. And partially protrude outward through both sides of the diffusion tube 300. Here, the protruding portion is the extension region 120 formed at both ends of the substrate 100.

In this state, the pair of sealing caps 400 are fitted to both sides of the heat sink 200 and the diffusion tube 300 coupled to each other. Here, since each of the pair of sealing caps 400 is formed with a substrate fixing hole 410 through which the extension region 120 of the substrate 100 is inserted, the extension region portions that are both ends of the substrate 100 are formed. 110 is inserted into and fixed to the substrate fixing hole 410. Accordingly, both ends of the substrate 100 are inserted into and fixed to the substrate fixing holes 410, thereby preventing the flow of the substrate 100 up and down and maintaining a stable installation state.

In addition, each of the pair of closing caps 400 has a cylindrical shape on the outside thereof, and guide protrusions 420 having a predetermined length are formed. In addition, a wire through hole 411 communicating with the hollow of the guide protrusion 420 is further formed at the center of the substrate fixing hole 410. Therefore, the wires electrically connected to the substrate 100 may protrude out of the sealing cap 400 through the hollow of the substrate through hole 410 and the guide protrusion 420.

In addition, the pair of power sockets 500 are fitted into and fixed to the guide protrusions 420 of each of the sealing caps 400. Here, each of the pair of power sockets 500 is made of a metal material, one end of which is open and forms a predetermined space therein and the other end is formed in a pointed shape. Here, substantially the inner circumference of the power socket 500 is fixed in close contact with the outer circumference of the guide protrusion 420. Accordingly, the pair of power sockets 500 may be prevented from flowing left and right up and down while being fixed to the substrate 100.

In addition, a protrusion groove (not shown) may be formed along the circumferential direction of the guide protrusion 420 on the outer surface of the guide protrusion 420 in the present invention, and the protrusion groove may be formed on the inner circumference of the power socket 500. Protruding lines (not shown) that can be fitted may be formed. Therefore, when the power socket 500 is fitted to the guide protrusion 420, the protrusion line is fixed while being fitted into the protrusion groove, thereby the power socket 500 is fitted to the guide protrusion 420 and additional fixing force is provided. Can be applied.

Accordingly, the guide protrusion 420 and the power socket 500 of the sealing cap 400 is fixed to each other, and the sealing can perform the waterproof function even without applying the waterproofing material due to the fitting between the projection line and the projection groove. Lines can be formed.

In addition, the outer surface of the guide protrusion 420 may be further provided with an adhesive member (not shown) made of an elastic material. Therefore, the adhesion between the inner surface of the power sockets 500 and the outer circumference of the guide protrusion 420 may be further increased.

Here, the wire connected to the substrate 100 protrudes to the outside of the sealing cap 400 through the hollow of the substrate through hole 410 and the guide protrusion 420, the end of which is electrically connected to the power socket 500. It can be soldered to be fixed.

In addition, a hole 520 is formed at an end of the sealing cap 400 and the power socket 500, and a wire connected to the substrate 100 through the hole 520 may be exposed to the outside. . That is, the wires connected to both ends of the substrate 100 one by one are discharged to the outside through the hollow of the wire passage hole 411 and the guide protrusion 420 of the sealing cap 400, and finally the power socket 500 It may be drawn out through the hole 520 formed at the end of the.

The wires as described above are connected to the substrate 100, and are configured to be connected to one location P (refer to FIG. 4) of both ends of the substrate 100. Therefore, by configuring the connection of one side of each power socket 500 and the board | substrate 100 with the wire which connects one place in the conventional two places, there exists an advantage which can mass-produce a product.

On the other hand, the DC 12V or 24V LED lamp of the present invention can select the color temperature.

Preferably, the LEDs 10 mounted on the substrate 100 are mounted in pairs, and the LEDs 10 are formed at different color temperatures.

For example, the LEDs 10 may be LEDs having different color temperatures of 3,000K Warm White 3,000K, 5000K Natural White, and 6000K Cool White. One of them may be selected and mounted on the substrate 100 to form a pair.

In addition, the diffusion tube 300 may mix color temperature from the pair of LEDs 110.

In addition, the LED lighting apparatus of the present invention includes two power sockets 500 electrically connected to the LEDs 10 of the substrate 100 at both ends of the substrate 100, and the circuit of the substrate 100 is also provided. By constructing the diode bridge circuit shown in Fig. 6, i.e., a nonpolar circuit, the LEDs 10 can operate even if any polarity of + polarity or -polarity is applied to the power socket 500. That is, the power socket 500 can be used regardless of the contact direction of the + and-electrodes. The operation of the diode bridge circuit is understood by those skilled in the art, and thus detailed description thereof will be omitted.

As described above, optimal embodiments have been disclosed in the drawings and the specification. Although specific terms have been used herein, they are used only for the purpose of describing the present invention and are not intended to limit the scope of the invention as defined in the claims or the claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

100: substrate 110: LED mounting area portion
120: extension area portion 130: fastening pad
200: heat sink 201: heat dissipation protrusion
210: sliding groove 220: fastening groove
300: diffusion tube 310: fastening protrusion
400: sealing cap 410: substrate fixing hole
411 wire through hole 420 guide protrusion
500: power socket 520: hole

Claims (11)

A substrate on which the LEDs are mounted;
A heat sink in which the substrate is slidably inserted into the substrate, and a sliding groove is formed in the outer circumference thereof, and a fastening groove is formed in the outer circumference thereof and covers a bottom portion of the substrate;
A diffusion tube covering an upper portion of the LEDs, and both ends of which are fitted into the fastening grooves;
A pair of sealing caps coupled to both ends of the heat sink and the diffusion tube, having a substrate fixing hole to which both ends of the substrate are inserted and fixed, and having a cylindrical guide protrusion projecting outwardly;
A pair of power sockets inserted into and fixed to the guide protrusions of each of the pair of sealing caps and electrically connected to the substrate by an electric wire; And
A pair of current flow lines provided in the substrate to form a pair of current flow lines in different directions between the pair of power sockets, and resistance values of the pair of current flow lines are different from each other to form the pair of power sockets The brightness of the DC 12V or 24V LED lamp comprising a brightness control for adjusting the brightness of the LEDs differently according to the current flow direction. The method of claim 1,
The substrate may be formed in a rectangular plate-shaped LED mounting region portion on which the LEDs are mounted, and a width narrower than the width of both ends of the LED mounting region portion to protrude from both ends of the LED mounting region portion, and be formed inside the pair of power sockets. The brightness of the DC 12V or 24V LED lamp is inserted, characterized in that it comprises an extension area portion of the rectangular plate is inserted into the substrate fixing hole. The method of claim 2,
Brightness-controlled DC 12V or 24V LED lamp is further provided on the outer surface of the guide protrusion is made of an elastic material to be in close contact with the inner surface of the power socket is fitted and fixed. The method of claim 1,
Between the guide protrusion and the power socket is further coated with a waterproof material,
Brightness-controlled DC 12V or 24V LED lamp, characterized in that the waterproof material is either epoxy or silicon. The method of claim 1,
The inner surface of each of the pair of power sockets is further formed with a projection line protruding along the circumferential direction of the power socket,
Brightness-controlled DC 12V or 24V LED lamp, characterized in that the projection groove is further formed on the outer surface of the guide protrusion is fitted. The method of claim 1,
Brightness-controlled DC 12V or 24V LED lamp, characterized in that the two sides of the substrate is further provided with a fastening pad in close contact with the inner circumference of the sliding groove of the heat sink. The method of claim 1,
Brightness-controlled DC 12V or 24V LED lamp, characterized in that the end of the sealing cap and the power socket is further formed with a hole through which the wire electrically connected to the substrate. The method of claim 1,
The brightness of the LEDs when the flow direction of the current forms one direction is half of the brightness of the LEDs when the flow direction of the current forms the opposite direction to the one direction. 24V LED lamp. The method of claim 8,
The brightness controller DC 12V brightness is adjusted, characterized in that the LED driver IC (LDI) disposed on the different current flow line and the resistors having different resistance values are disposed on the different current flow line. Or 24V LED lamp. The method of claim 1,
The DC 12V or 24V LED lamp to select the color temperature,
The color temperature is selected by a pair of LEDs having different color temperatures of 3,000K Warm White 3,000K, 5000K Natural White and 6000K Cool White. Mounted on,
And said diffusion tube incorporates color temperature from said pair of LEDs. The method of claim 7, wherein
The electric wire is connected to one end of the substrate, the brightness of the DC 12V or 24V LED lamp.

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