CN105605490B - focal length adjustable L ED photographic lamp - Google Patents

Abstract

the invention relates to an L ED photographic lamp with adjustable focal length, which comprises a front shell assembly and a rear shell assembly, wherein the front shell assembly is provided with a lens, the rear shell assembly is provided with an intermediate assembly, the intermediate assembly comprises a threaded cylinder and a rotary cylinder, the threaded cylinder and the rotary cylinder are in threaded connection between the front shell assembly and the rear shell assembly, the distance between the front shell assembly and the rear shell assembly is limited by a connection positioning structure, the front shell assembly comprises a front shell, a lens support and a lens, the rear shell assembly comprises a rear shell, a rear shell spring, a heat dissipation column, a heat radiator and an L ED gasket, the front end of the heat dissipation column is tightly attached to the bottom of the L ED lamp, the rear end of the heat dissipation column is abutted against the rear shell spring, the excircle of the heat dissipation column is in matched connection with a shaft hole of the heat radiator, and when the rotary cylinder is rotated, the distance between the L ED lamp and the lens is adjusted through the threaded cylinder to carry out zoom photography, the integral heat dissipation structure is suitable for an energy-saving L ED lamp, and.

Description

An adjustable focal length LED photography light

technical field

The invention relates to a professional adjustable focal length photographic equipment, more specifically to an adjustable focal length LED photographic light.

Background technique

At present, most cameras use the traditional focus adjustment method to adjust the focal length of the video lights of most cameras. The video lights used by many cameras cannot achieve the focus of the light required for photography or the refraction distance is not far away, so that the photographic effect cannot be achieved. The effect is not suitable for the needs of modern photography; and most of them use traditional light bulb light sources, which consume a lot of power and have a short service life.

In addition, traditional cameras need to use a zoom lens to adjust the focal length, and the operation of changing the zoom lens is very troublesome, and the focus and refraction effects of the camera cannot be better adjusted, which makes it troublesome to adjust the focal length.

Therefore, it is necessary to develop a professional LED photography light with adjustable focus.

Contents of the invention

The purpose of the present invention is to overcome the defects of the prior art and provide an adjustable focal length LED photography light, which facilitates the adjustment of the focal length and achieves the effect of focusing and refracting farther away. In order to achieve the above purpose, the present invention adopts the following technical solutions:

An LED photographic light with adjustable focus, comprising a front shell assembly with a lens and a rear shell assembly with an LED light, the front shell assembly and the rear shell assembly are connected by an intermediate assembly, the middle The assembly includes a threaded cylinder that is threadedly connected between the front shell assembly and the rear shell assembly, and a rotating cylinder that is fixedly connected to the outer periphery of the threaded cylinder in the form of a sleeve; Definition; the front shell assembly includes a front shell, and a lens holder arranged in the front shell; the lens holder is fixed with the lens through a spring iron ring, and the rear shell assembly includes a rear shell, and runs through the The back shell spring and heat dissipation column in the back shell, and the radiator fixed at the front end of the rear shell and the LED gasket arranged at the front end of the radiator; the front end of the LED gasket is fixed with the LED lamp, and the LED gasket Both the radiator and the radiator are provided with a central through hole for passing through the cooling column; the front end of the cooling column is close to the bottom of the LED lamp, the rear end is in conflict with the rear shell spring, and the outer circle is connected with the shaft hole of the radiator; when the rotating cylinder is rotated, Drive the threaded cylinder to rotate, change the distance between the LED lamp and the lens, so as to realize the adjustment of the focal length.

Its further technical solution is: the threaded barrel is provided with external threads and internal threads with different helical directions, the external thread is threaded with the front shell, and the internal thread is threaded with the LED washer; the rotation of the threaded barrel makes The lens of the front shell assembly moves forward or backward, and the LED light of the rear shell assembly moves backward or forward, thereby changing the distance between the LED light and the lens to achieve focusing.

Its further technical solution is: the lens includes a large lens and a small lens arranged front and back, and the spring iron ring includes a large spring iron ring for fixing the large lens and a small spring iron ring for fixing the small lens.

Its further technical solution is: the moving positions of the lens of the front shell assembly and the LED light of the rear shell assembly are limited by the coupling positioning structure, the coupling positioning structure is a screw-type pull rod, and the pull rod There are at least two pull rod holes passing through the LED gasket and the front shell are fixedly connected with threads, and the rear shell and the radiator are provided with pull rod avoidance holes for avoiding the pull rods.

Its further technical solution is: the lens bracket includes at least three strip plates, the outer circle of the front end of the strip plate is fixedly connected with the front shell, and the rear end is connected with a rear fixing plate; Through the center hole of the cooling column, and the screw hole used to pass through the screw between the rear shell and the radiator; the front end of the strip plate is fixed with the lens; the strip plate also constitutes the connection positioning structure.

Its further technical solution is: the outer circle of the LED gasket is provided with at least three notches for passing through the strip plate, and is provided with an external thread part threadedly connected with the threaded cylinder.

Its further technical solution is: the heat dissipation column is made of high thermal conductivity material, and its end surface is close to the bottom of the LED lamp, so as to conduct heat generated by the LED lamp to the adjacent radiator and rear shell to dissipate heat.

Its further technical solution is: the rear end of the rear shell is provided with a handle for easy carrying.

Its further technical solution is: the front end of the front shell is provided with a locking assembly for locking the LED photography light, and the locking assembly includes at least three slots extending forward from the outside of the front shell, and the slots The front end of the piece is provided with a buckle portion protruding inwardly or outwardly.

Its further technical solution is: said LED lamp is a high-power LED integrated light source.

Compared with the prior art, the beneficial effect of the present invention is: a new conceptual structure for adjusting the distance between the LED lamp and the lens for zoom photography by using the rotating cylinder and the threaded cylinder to adjust the screw rotation, and the overall heat dissipation structure is suitable for energy-saving LED lamps , At the same time, it solves the problem of adjusting the focus and heat dissipation of professional cameras.

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is an exploded perspective view of the three-dimensional structure of a specific embodiment 1 of an LED photography light with adjustable focus according to the present invention;

Fig. 2 is a schematic cross-sectional view of Embodiment 1 of a focus-adjustable LED photography light of the present invention;

FIG. 3 is an exploded perspective view of the three-dimensional structure of Embodiment 2 of an adjustable-focus LED photography light of the present invention.

reference sign

101 Card slot 102 Front shell

103 Large spring iron coil 104 Large lens

105 Small spring iron coil 106 Small lens

107 Lens Holder 108 Pull Rod

109 Headless hex socket head screw 110 Slotted hex nut

111 Slot spring 112 Slot headless hexagon socket head screw

113 Spacer 114 Concave spacer

115 Semi-circular washer 116 Headless slotted screw

117 Hex nut 118 U-shaped rod

119 Flat head socket head screw 120 Base headless socket head screw

121 Base 122 Torsion spring

123 Tightening screws

201 LED lamp 202 LED lamp gasket

203 Cooling column 204 Radiator

205 Back shell 206 Aviation plug

207 Handle 208 Plug sleeve

209 Rear case hex screw 210 Rear case spring

211 Screw 212 Hex screw

213 aluminum sheet

31 Threaded cylinder 32 Rotating cylinder

33 plastic screw

Detailed ways

In order to fully understand the technical content of the present invention, the technical solutions of the present invention will be further introduced and illustrated below in conjunction with specific examples, but not limited thereto.

Referring to Fig. 1 and Fig. 2, a kind of focus-adjustable LED photographic light includes a front shell assembly (parts include a slot piece 101, a front shell 102, a large spring iron ring 103, a large lens 104, a small spring iron ring 105, small lens 106, lens holder 107, pull rod 108, headless hexagon socket head screw 109, slotted hexagonal nut 110, slotted spring 111, slotted headless hexagon socket head screw 112, gasket 113, concave gasket 114, semicircle Gasket 115, headless slotted screw 116, hex nut 117, U-shaped rod 118, flat head hexagon socket head screw 119, base headless hexagon socket head screw 120, base 121, tightening spring 122, tightening screw 123), rear shell Components (parts include LED lamp 201, LED lamp washer 202, heat dissipation column 203, radiator 204, rear case 205, aviation plug 206, handle 207, plug cover 208, rear case hex screw 209, rear case spring 210, screw 211, Hex screw 212) and intermediate assembly (parts include threaded barrel 31, rotating barrel 32, plastic screw 33), the front shell assembly and the rear shell assembly are connected by the rotating barrel 32 and the threaded barrel 31 of the intermediate assembly, the front shell assembly and the rear shell assembly Pull rod 108 plays a role of positioning and limiting the moving position of the moving position, and the front shell assembly uses lens bracket 107 as base 121 to respectively fix large lens 104 and small lens 106 through large spring iron ring 103 and small spring iron ring 105, and rear shell spring 210 (use To generate the contact pressure between the heat dissipation column and the LED gasket to ensure good heat dissipation effect) and the heat dissipation column 203 runs through the LED gasket 202 and the radiator 204 from the rear shell 205, and the end surface of the heat dissipation column 203 is close to the bottom of the LED lamp 201. The LED washer therein can also be called the LED lamp fixing plate.

Referring to Figure 1 and Figure 2, the front shell assembly and the rear shell assembly rotate simultaneously through the internal and external threads of the rotating cylinder 32 and the threaded cylinder 31 of the intermediate assembly, so that the front shell 102 moves forward, and the rear shell 205 moves backward to reach the LED lamp 201 and the lens. The distance to achieve the zoom effect; by rotating the rotating cylinder 32 to drive the threaded cylinder 31, the threaded cylinder 31 pushes the thread of the front shell 102 through the external thread (left thread) so that the front shell assembly including the large lens 104 and the small lens 106 also moves forward or Move backward, and at the same time, the threaded barrel 31 pushes the LED gasket 202 through the internal thread (right thread), so that the rear shell assembly including the LED lamp 201 also moves backward or forward, so that the large lens 104 and the small lens are adjusted by zooming in or out. The distance between 106 and the LED lamp 201 realizes the focusing function. When the front shell assembly and the rear shell assembly move to a certain position, the pull rod 108 plays a position-limiting role, and prevents the front shell assembly and the rear shell assembly from being twisted to disconnect, so as to ensure that they are connected together to form an integrated camera.

Referring to Fig. 1 and Fig. 2, two lenses are installed therein, including a structure of a large lens 104 and a small lens 106, the forward and backward movement of the LED lamp 201 and the forward and backward movement of the large lens 104 and the small lens 106 change the relationship between each other. It can also make the light energy of the LED light 201 more focused and refracted further; the LED light is a high-power LED integrated light source, and the wattage can be generally selected from 10W to 100W according to the needs of the photography light. The light is strong enough and the beam is concentrated , the refraction is farther and more focused.

Referring to Fig. 1, Fig. 2 and Fig. 3, the end surface of the cooling post 203 is close to the bottom of the LED lamp 201, and the high thermal conductivity of the cooling post 203 can quickly transfer the heat of the LED lamp 201 to the rear case 205 and the LED lamp connected thereto. The gasket 202, the radiator 204, and then use the heat dissipation area of the rear shell 205, the LED gasket 202 and the radiator 204 to form a good convective heat exchange with the air, so as to achieve a better heat dissipation effect, which is beneficial to the service life of the LED lamp 201 . During specific installation, a heat-conducting adhesive material can also be coated on the matching place between the cooling column and the shaft hole of the radiator. Wherein, a fixing screw for fixing the handle is provided at the rear end of the central through hole of the radiator, and such a structure is very convenient for production and installation.

Referring to Figure 1 and Figure 3, the front housing part is provided with a locking assembly for locking the LED photography light, including (slotted hex nut 110, slotted spring 111, slotted headless hexagon socket head screw 112, washer 113, concave Gasket 114, semicircular gasket 115, headless slotted screw 116, hex nut 117, U-shaped rod 118, flat head hexagon socket head screw 119, base headless hexagon socket head screw 120, base 121, tightening spring 122, tightening screw 123), the LED video light can be positioned and locked on the camera or photographic equipment, so as to fix the position during the work of the video light and facilitate the directional lighting.

Referring to Fig. 1 and Fig. 3, the rear shell assembly is provided with a handle 207, which acts as a handle and facilitates the carrying of the LED photography light.

In the first embodiment shown in Figures 1 and 2, the connection and positioning structure is a screw-type pull rod, and there are two pull rods. The tie rod avoidance hole for the avoidance rod. The threaded barrel adopts two internal and external threads with opposite helical directions. Under the same rotation angle, its axial movement distance is twice that of a single thread, so quick adjustment can be realized. And in the embodiment two of Fig. 1 and Fig. 3, the lens holder comprises four strip plates, the outer circle of the front end of the strip plates is fixedly connected with the front shell, and the rear end is connected with a rear fixed plate (i.e. the aluminum sheet 213 in Fig. 3 ); the rear fixing plate is provided with a central hole for passing through the heat dissipation column, and a screw hole for passing through the screw between the rear shell and the radiator; the front end of the strip plate is fixed with a lens; the outer circle of the LED gasket is provided with Four notches are used to pass through the strip plate, and an external threaded part is provided to be threadedly connected with the threaded barrel, and only one threaded connection is used to realize more precise focus adjustment. The strip plate also constitutes the connection and positioning structure. Such a structure is very compact.

The specific description of Embodiment 2 is as follows: Refer to Figure 3, another schematic diagram of the structural decomposition of another embodiment 2 of an adjustable-focus LED photography light. The difference from Embodiment 1 is that there is only one lens installed, and the focusing structure is different. , where the front shell assembly is different from Embodiment 1 in that there are no small spring iron ring 105, small lens 106 and pull rod 108 parts in the parts, only a large lens 104 is housed, and the threaded cylinder 31 is limited by the stopper on the lens holder 107 Position effect, when rotating the rotary cylinder 32 by hand to drive the threaded cylinder 31 to rotate, the threaded cylinder 31 pushes the LED lamp gasket 202 through the external thread to drive the rear shell assembly (an aluminum sheet 213 is added compared to Embodiment 1), which includes the LED lamp 201 and Moving forward and backward, the zoom function of the LED lamp 201 can be achieved by adjusting the threaded cylinder to narrow or distance the distance from the large lens 104 .

Referring to Fig. 3, the front shell assembly is fixed. When the rear shell assembly moves to a certain position, the lens holder 107 plays a positioning role. When the rear shell assembly moves to a certain position, the stopper on the lens support 107 will The threaded barrel 31 plays a role of limiting positioning, so that the threaded barrel 31 can only rotate and cannot move forward and backward, so that the rear shell assembly including the LED lamp 201 cannot move further, reaching the maximum focus adjustment position. By adjusting the distance between the LED lamp 201 and the large lens 104 in this way, the focusing function of the LED lamp 201 is realized.

Referring to FIG. 3 , the heat dissipation post 203 passes through the rear case 205 through the rear shell spring 210 and the heat dissipation post 203 through the LED gasket 202 and the heat sink 204 , and the end surface of the heat dissipation post 203 is close to the bottom of the LED lamp 201 . A structure that can conduct heat quickly from the LED lamp 201 to the connected rear shell 205, LED gasket 202, and radiator 204, and form a good convective heat exchange with the air through their heat dissipation area, so as to achieve a better heat dissipation effect. This is beneficial to the service life of the LED lamp 201 .

To sum up, an adjustable focal length LED photographic light of the present invention utilizes the rotating cylinder 32 and the threaded cylinder 31 to adjust the screw rotation to adjust the distance between the LED light 201 and the lens, a new conceptual structure for zoom photography The heat dissipation column 203 with high thermal conductivity makes the overall heat dissipation structure suitable for the energy-saving LED lamp 201, which solves the problem of difficult adjustment of the focal length of professional photography lights, and can achieve the effect of more focused light and farther refraction. The heat dissipation effect of the LED lamp 201 is good.

The above only uses examples to further illustrate the technical content of the present invention, so that readers can understand more easily, but it does not mean that the implementation of the present invention is limited to this, and any technical extension or re-creation done according to the present invention is subject to the present invention. protection of. The protection scope of the present invention shall be determined by the claims.

Claims (10)

1. a kind of LED photography luminaires of adjustable focal length, including lensed front shell assemblies and the rear shell component equipped with LED light are set, its It is characterized in that：The front shell assemblies and rear shell component by equipped with intermediate module couple, the intermediate module includes screw thread The thread barrel being connected between front shell assemblies and rear shell component, and it is fixedly linked in sleeve fashion the rotation of thread barrel periphery Cylinder；The shift position of front shell assemblies and rear shell component by equipped with the location structure that couples limit；Before the front shell assemblies include Shell, the lens carrier in front housing；The lens carrier is fixed with the lens, the rear shell by spring iron ring Component includes rear shell, and through the rear shell spring and thermal column in rear shell, and be fixedly arranged on the radiator of rear shell front end and be arranged on The LED packing rings of radiator front end；The LED packing rings are fixedly arranged at the front end with the LED light, the LED packing rings and radiator It is equipped with for the central through hole through thermal column；LED light bottom is close in thermal column front end, and rear end and rear shell spring are inconsistent, It is cylindrical to be connected with radiator shaft hole matching；During turn rotating cylinder, drive thread barrel to rotate, change between LED light and lens away from From realizing the adjusting of focal length with this.

A kind of 2. LED photography luminaires of adjustable focal length according to claim 1, it is characterised in that：The thread barrel is equipped with Spiral shell is to different external screw thread and internal thread, the external screw thread and front housing thread connection, the internal thread and LED collar threads Connection；The rotation of thread barrel makes the lens of front shell assemblies move forward or retreat, the LED light of rear shell component shrinks back or advances, from And change the distance between LED light and lens, to realize focusing.

A kind of 3. LED photography luminaires of adjustable focal length according to claim 2, it is characterised in that：Before the lens include The big lens and lenslet set afterwards, the spring iron ring include being used to fix the big spring iron ring of big lens and for fixing The little spring iron ring of lenslet.

A kind of 4. LED photography luminaires of adjustable focal length according to claim 3, it is characterised in that：The front shell assemblies it is saturating Mirror with it is described after location structure is spacing by described coupling the shift position of LED light of shell component, the connection location structure For screw-type pull rod, the pull rod is at least two, and the tie rod hole being equipped with through LED packing rings is with front housing using the connection that is screwed Connect, the rear shell and radiator are equipped with the pull rod avoid holes for being used for avoiding pull rod.

A kind of 5. LED photography luminaires of adjustable focal length according to claim 1, it is characterised in that the lens carrier bag At least three pieces of strip boards are included, the front end of strip board is cylindrical to be fixedly connected with front housing, and rear end connection has rear fixed plate；Described is rear solid Fixed board is equipped with the centre bore being used for through thermal column, and the screw hole for the screw through rear shell and radiator；Strip The front end face of plate is fixed with the lens；The strip board forms the connection location structure at the same time.

A kind of 6. LED photography luminaires of adjustable focal length according to claim 5, it is characterised in that the LED packing rings it is cylindrical At least provided with three notches being used for through strip board, and equipped with the external thread part with thread barrel thread connection.

A kind of 7. LED photography luminaires of adjustable focal length according to any one of claims 1 to 6, it is characterised in that：Thermal column is High heat conductive material, and the bottom of LED light is close in its end face, by LED light shine generation heat heat conduction to adjacent thereto Radiator and rear shell, radiated with this.

A kind of 8. LED photography luminaires of adjustable focal length according to any one of claims 1 to 6, it is characterised in that：The rear shell Rear end be equipped with portable handle.

A kind of 9. LED photography luminaires of adjustable focal length according to any one of claims 1 to 6, it is characterised in that：The front housing Front end be equipped with and be used to locking the latch assemblies of LED photography luminaires, the latch assembly include at least three on the outside of front housing to The card slot part of preceding extension, the front end of the card slot part are equipped with inwards or the clamping part towards outside protrusion.

A kind of 10. LED photography luminaires of adjustable focal length according to any one of claims 1 to 6, it is characterised in that：Described LED light is high power LED integrated light source.