CN211502707U - Electric focusing device for lamp - Google Patents

Abstract

The utility model discloses an electric focusing device for lamps, which comprises a casing and a lamp board fixed in the casing, wherein LED lamps are fixed on the lamp board, and a heat conduction plate I is fixed on the surface of the lamp board. The side of the heat-conducting plate I away from the lamp board is provided with a heat-conducting plate II, the heat-conducting plate I and the heat-conducting plate II are arranged in parallel, and there is a gap between the heat-conducting plate I and the heat-conducting plate II. An air inlet is arranged between the heat conduction plate I and the heat conduction plate II, an air outlet is arranged on the heat conduction plate II, and a plurality of heat sinks are arranged between the heat conduction plate I and the heat conduction plate II, adjacent to the heat sink. The sheets are arranged in a staggered manner, a fan is fixed on the side of the casing away from the heat-conducting plate II, and a plurality of heat dissipation holes are arranged on the casing at the rear of the fan. The device can completely utilize the cold air outside the lamp to dissipate heat to the LED lamp.

Description

An electric focusing device for lamps

technical field

The utility model belongs to the technical field of lamps, and more particularly relates to an electric focusing device for lamps.

Background technique

The spotlight is the light gathered by the use of a condenser lens or a reflector. The point light type of the reflector lamp is relatively simple, with strong illumination, narrow illumination, and easy to focus on a specific location in the scene. It is used in studios and studios. The most one kind of light. LED spotlights use LEDs as light sources. LEDs (Light Emitting Diodes) are solid-state semiconductor devices that can convert electrical energy into visible light, which can directly convert electricity into light. The heart of the LED is a semiconductor chip, one end of the chip is attached to a fixed seat, one end is the negative electrode, and the other end is connected to the positive electrode of the power supply, so that the whole chip is encapsulated by epoxy resin, and the LED lamp is used to convert part of it into a light source, and part of it. Converted into heat energy, the temperature of the LED lamp will increase at this time, which will cause problems such as the reduction of the luminous efficiency of the chip and the reduction of the lasing efficiency of the phosphor powder. Therefore, the heat dissipation of the LED lamp plays a crucial role in the LED lamp, but the heat dissipation effect of the existing LED lamp is not good, and it is difficult to quickly dissipate the heat of the LED lamp.

CN209295066U discloses a passive LED lamp with an air convection heat dissipation structure. A heat-conducting plate is fixedly connected to the surface of the lamp board, and a large heat sink is fixedly connected to the surface of the heat-conducting plate near its edge. A small heat sink is fixedly connected to the surface of the middle part, an air inlet is opened on the surface of the ventilator near one end of the lampshade, and an electric fan is fixedly connected to the inner surface of the ventilator. The device drives the cooler air outside the ventilator to enter the interior of the ventilator through the air inlet by setting an electric fan, and conducts heat exchange with the large heat sink and the small heat sink to take away the surface heat of the large heat sink and the small heat sink, so as to achieve the desired effect on the heat sink. The effect of heat dissipation of the lamp board. However, the cold air entering the ventilator will directly enter the electric fan along the inner wall of the ventilator, and be discharged from the left side of the ventilator. not good.

SUMMARY OF THE INVENTION

The purpose of this utility model is to solve the problems existing in the prior art, and to provide an electric focusing device for lamps, which can fully utilize the cold air outside the lamps to dissipate heat to the LED lamps, and at the same time increase the contact time between the air and the heat sink and improve the heat dissipation efficiency. .

For achieving the above object, the technical scheme adopted by the present utility model is:

An electric focusing device for lamps, comprising a housing and a lamp board fixed in the housing, the lamp board is fixed with an LED lamp, the surface of the lamp board is fixed with a heat conduction plate I, and the heat conduction plate I is far from One side of the lamp board is provided with a heat-conducting plate II, the heat-conducting plate I and the heat-conducting plate II are arranged in parallel, and a gap is left between the heat-conducting plate I and the heat-conducting plate II, and the housing is located on the heat-conducting plate I There is an air inlet between the heat conduction plate II and the heat conduction plate II, an air outlet is arranged on the heat conduction plate II, and a plurality of heat sinks are arranged between the heat conduction plate I and the heat conduction plate II, and the adjacent heat sinks are arranged in a staggered manner. A fan is fixed on the side of the casing away from the heat-conducting plate II, and a plurality of heat dissipation holes are arranged on the casing behind the fan.

When the above-mentioned device is in use, the heat generated by the LED lamp is transferred to the heat-conducting plate 1 and the heat-dissipating fins connected to the heat-conducting plate 1, the fan is turned on, and the wind enters from the air inlet, and flows forward along the air passages formed by the staggered heat-dissipating fins. , and flows out from the air outlet. During the flow of the cold air, it takes away the heat on the heat-conducting plate I and the heat sink connected to the heat-conducting plate I, and is discharged from the air outlet. At the same time, the heat carried by the cold air is partially transferred to the heat-conducting plate II and the The heat sink connected to the heat-conducting plate II is discharged to the side of the fan through the heat-conducting plate II, and radiates out from the heat dissipation hole. The cold air outside the lamp is fully utilized to dissipate heat to the LED lamp. The flow in the road increases the time for the air to contact the heat sink and improves the heat dissipation efficiency.

Further, a focusing device is provided in front of the light board, the focusing device includes a convex lens installed in the casing and slidingly matched with the casing, the bottom of the convex lens is connected with a connecting rod, and the connecting The rod penetrates through the bottom of the casing and is slidably connected with the casing, and the end of the connecting rod is sleeved on the threaded rod to be screwed with the threaded rod, and the threaded rod is driven to rotate by a motor. The motor is used to drive the threaded rod to rotate, thereby driving the connecting rod to move linearly on the threaded rod.

Further, the top of the convex lens is connected with the slider, the inner wall of the casing is provided with a sliding rail, and the slider slides on the sliding rail.

Further, a displacement sensor is provided on the inner wall of the casing in front of the convex lens. The distance between the LED light and the illumination target is measured by a displacement sensor.

Further, a lampshade is fixedly mounted on the outer side of the housing. Protects the convex lens inside the focusing mechanism.

Further, the air inlet is provided with a dust filter. Prevent dust in the cold air from entering the housing.

Compared with the prior art, the beneficial effects of the present utility model are:

The device of the utility model can completely utilize the cold air outside the lamp to dissipate heat to the LED lamp by providing air inlets and staggered heat sinks between the heat-conducting plate I and the heat-conducting plate II. The flow in the middle increases the time for the air to contact the heat sink and improves the heat dissipation efficiency.

Description of drawings

1 is a cross-sectional view of an electric focusing device for lamps according to Embodiment 1;

Fig. 2 is A-A plane sectional view in Fig. 1;

In the figure: 1. Shell; 2. Convex lens; 3. Lamp board; 4. Thermal conduction plate I; 5. Thermal conduction plate II; 6. Air inlet; 7. Heat sink; Connecting rod; 11, motor; 12, threaded rod; 13, slider; 14, slide rail; 15, displacement sensor; 16, lampshade; 17, dustproof net.

Detailed ways

The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Example 1

As shown in Figures 1-2, an electric focusing device for lamps includes a housing 1 and a lamp board 3 fixed in the housing 1. LED lights are fixed on the light board 3, and the LED lights are connected with The power supply is electrically connected, the surface of the lamp board 3 is fixedly provided with a heat conduction plate I4, the side of the heat conduction plate I4 away from the lamp plate 3 is provided with a heat conduction plate II5, the heat conduction plate I4 and the heat conduction plate II5 are arranged in parallel, and There is a gap between the heat-conducting plate I4 and the heat-conducting plate II5, and two air inlets 6 are provided on the housing 1 at the position between the heat-conducting plate I4 and the heat-conducting plate II5. The horizontal axis of the body 1 is axially symmetrical, the heat-conducting plate II5 is provided with an air outlet 8, a plurality of heat sinks 7 are arranged between the heat-conducting plate I4 and the heat-conducting plate II5, and the adjacent heat-dissipating fins 7 are staggered. , the two ends of each heat sink 7 are sealed with the inner wall of the housing 1, and the air passage is formed by the heat sink 7, the heat conduction plate I4, the heat conduction plate II5 and the inner wall of the housing 1, and the cold air Enters from the two air inlets 6 and flows out from the air outlet 8 under the guidance of the cooling fins 7. A fan 9 is fixed in the casing 1 on the side away from the heat conducting plate II5. The casing 1 A plurality of cooling holes are arranged behind the fan 9;

A focusing device is provided in front of the light board 3 , and the focusing device includes a convex lens 2 installed in the casing 1 and slidingly matched with the casing 1 , and the bottom of the convex lens 2 is connected with the connecting rod 10 . , the connecting rod 10 penetrates through the bottom of the housing 1 and is slidably connected with the housing 1 , the end of the connecting rod 10 is sleeved on the threaded rod 12 and is threadedly connected to the threaded rod 12 . The threaded rod 12 is driven to rotate by the motor 11. Specifically, the bottom of the housing 1 is provided with a through hole for accommodating the connecting rod 10, the connecting rod 10 passes through the through hole and the end of the connecting rod 10 is The part is sleeved on the threaded rod 12 and is screwed with the threaded rod 12. A motor 11 is fixed on the bottom outside the casing 1, and the motor 11 is connected with an external controller. The controller is commonly used in the prior art. The output shaft of the motor 11 is connected with the threaded rod 12 to drive the threaded rod 12 to rotate, thereby driving the connecting rod 10 to perform linear motion on the threaded rod 12, The top of the convex lens 2 slides on the inner wall of the housing 1, the upper end of the convex lens 2 is connected with the slider 13, the inner wall of the housing 1 is provided with a sliding rail 14, and the slider 13 slides on the sliding block 13. Sliding on the rail 14, preferably, the two ends of the sliding rail 14 are provided with limit blocks to prevent the convex lens 2 from sliding out of the sliding rail 14, preferably, the inner wall of the housing 1 is located in front of the convex lens 2 with a displacement The sensor 15 measures the distance between the LED lamp and the irradiation target through the displacement sensor 15. The displacement sensor 15 is connected to an external controller. The controller is a device commonly used in the prior art, which is not shown here. A lampshade 16 is fixedly installed on the outer side of the body 1 to protect the convex lens 2 in the focusing device.

The operating principle of the above-mentioned device is: the heat generated by the LED lamp is transferred to the heat-conducting plate I4 and the heat sink 7 connected to the heat-conducting plate I4, the fan 9 is turned on, and the cold air enters from the air inlet 6, and forms along the staggered heat sink 7. The air passage of the I4 flows forward and flows out from the air outlet 8. During the flow, the cold air takes away the heat on the heat-conducting plate I4 and the heat sink 7 connected to the heat-conducting plate I4, and is discharged from the air outlet, while the cold air carries Part of the heat is transferred to the heat-conducting plate II5 and the heat sink 7 connected to the heat-conducting plate II5, and is discharged to the side of the fan 9 through the heat-conducting plate II5, and is dissipated from the heat dissipation hole, making full use of the cold air outside the lamp, and has a good effect on the LED. The lamp dissipates heat, and the cold air flows in the air passage formed by the heat sink 7, which increases the contact time between the air and the heat sink 7 and improves the heat dissipation efficiency; when the focal length of the lamp needs to be adjusted, the motor 11 is turned on, and the threaded rod 12 rotates, The distance between the LED light and the irradiation target is measured by the displacement sensor 15. The threaded rod 12 drives the connecting rod 10 to move in translation, and drives the slider 13 on the convex lens 2 to slide on the slide rail 14 to realize focusing of the LED light.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. The utility model provides an electronic focusing device of lamps and lanterns, includes casing (1) and sets firmly lamp plate (3) in casing (1), the LED lamp has set firmly on lamp plate (3), its characterized in that, lamp plate (3) fixed surface is equipped with heat-conducting plate I (4), one side that heat-conducting plate I (4) kept away from lamp plate (3) is equipped with heat-conducting plate II (5), heat-conducting plate I (4) and heat-conducting plate II (5) parallel arrangement, and leave the clearance between heat-conducting plate I (4) and heat-conducting plate II (5), lie in on casing (1) be equipped with air intake (6) between heat-conducting plate I (4) and heat-conducting plate II (5), be equipped with gas outlet (8) on heat-conducting plate II (5), be equipped with a plurality of fin (7) between heat-conducting plate I (4) and heat-conducting plate II (5), adjacent fin (7) set up in a staggered way, one side of heat-conducting, a plurality of heat dissipation holes are formed in the shell (1) and located behind the fan (9).

2. The electric focusing device for the lamp according to claim 1, wherein a focusing device is arranged in front of the lamp panel (3), the focusing device comprises a convex lens (2) which is installed in a shell (1) and is in sliding fit with the shell (1), the bottom of the convex lens (2) is connected with a connecting rod (10), the connecting rod (10) penetrates through the bottom of the shell (1) and is in sliding connection with the shell (1), the end part of the connecting rod (10) is sleeved on a threaded rod (12) and is in threaded connection with the threaded rod (12), and the threaded rod (12) is driven by a motor (11) to rotate.

3. An electric focusing device for lamps and lanterns according to claim 2 characterized in that the top of the convex lens (2) is connected with a sliding block (13), the inner wall of the shell (1) is provided with a sliding rail (14), and the sliding block (13) slides on the sliding rail (14).

4. An electric focusing device for lamps and lanterns according to claim 2, characterized in that the inner wall of the casing (1) is provided with a displacement sensor (15) in front of the convex lens (2).

5. An electric focusing device for lamps and lanterns according to claim 1, characterized in that a lampshade (16) is fixedly arranged on the outer side of the shell (1).

6. An electric focusing device for lamps and lanterns according to claim 1, characterized in that the dust screen (17) is arranged at the air inlet (6).

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