Car lamp device capable of adjusting light transmittance

Abstract

The utility model discloses a vehicle lamp device capable of adjusting light transmittance, and belongs to the field of LED lamps, the vehicle lamp device comprises a lamp holder, a first lens arranged on the lamp holder, a fixed sleeve fixedly sleeving the lamp holder, a second lens arranged on the fixed sleeve, and an adjusting structure used for driving the second lens to move close to or away from the first lens; the adjusting structure comprises a telescopic sleeve which is inserted into the fixed sleeve, axially moves and is connected with the second lens, a guide frame plate which axially moves in the fixed sleeve and is connected with the telescopic sleeve, and a rack which is fixedly connected into the guide frame plate; the gear is rotationally arranged in the fixed sleeve and is in meshed connection with the rack; and the motor is arranged on the fixed sleeve and is used for driving the gear to rotate. The mode that the motor drives the gear to be matched with the rack is adopted, axial movement of the second lens is achieved, operation is easy and convenient, and the second lens can be prevented from inclining during adjustment. The whole adjusting structure is compact in design, small in occupied space and easy to integrate into a vehicle lamp device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of LED lamp, in particular to a vehicle lamp device with adjustable light transmittance. BACKGROUND

[0002] The vehicle lamp device with adjustable light transmittance is one of the important developments of modern automobile lighting technology, aiming to provide more flexible and precise lighting effect. The Chinese utility model patent with the authorization announcement number CN213299965U discloses a light transmittance adjustable automobile LED headlamp. Through a series of innovative designs, the device realizes effective adjustment of the light transmittance and irradiation distance of the LED light. The core design of the device is to clamp the second lens with a movable square clamp and fix the lens with a movable column, so as to facilitate users to replace second lenses of different thicknesses to change the light transmittance of the LED light. In addition, the device also adopts a lead screw mechanism to control the distance between the two lenses, thereby accurately adjusting the irradiation distance of the LED light. This design not only improves the flexibility of the vehicle lamp, but also makes the lighting effect more precise and controllable.

[0003] However, although the device has many advantages in design and function, there are still some potential problems in the adjustment mechanism during actual use. Specifically, when adjusting the position of the second lens, the device is realized through the cooperation of two groups of motors, lead screws and sliding blocks. In ideal conditions, the two motors should work synchronously to ensure that the two lead screws can rotate synchronously, thereby maintaining the stable position of the second lens. However, in actual conditions, due to the influence of various factors such as manufacturing errors, frictional resistance, motor performance differences and control precision limitations, it is difficult for the two motors to work completely synchronously. This leads to the phenomenon that the two lead screws may not be synchronized during rotation, which in turn makes the second lens prone to tilt during adjustment. Once the second lens tilts, the stress distribution it receives will no longer be uniform, thereby increasing the risk of lens breakage.

[0004] Therefore, the present application provides a vehicle lamp device with adjustable light transmittance to solve the above problems. UTILITY MODEL CONTENT

[0005] The present application provides a vehicle lamp device with adjustable light transmittance, aiming to solve the problems in the background art that in actual conditions, due to factors such as manufacturing errors, frictional resistance and motor performance differences, the two forces are difficult to balance completely, which easily leads to the phenomenon that the two lead screws cannot rotate synchronously and the second lens tilts and breaks.

[0006] To achieve the above object, the application provides the following technical scheme: a vehicle lamp device with adjustable light transmittance, comprising a lamp holder, a first lens arranged on the lamp holder, a fixing sleeve fixedly sleeved on the lamp holder, a second lens arranged on the fixing sleeve, and an adjusting structure for driving the second lens to move close to or away from the first lens; the adjusting structure comprises a telescopic sleeve axially movably sleeved in the fixing sleeve and connected with the second lens, a guide frame plate axially movably arranged in the fixing sleeve and connected with the telescopic sleeve, a rack fixedly connected in the guide frame plate, a gear rotatably arranged in the fixing sleeve and meshingly connected with the rack, and a motor arranged on the fixing sleeve for driving the gear to rotate.

[0007] Preferably, a limiting groove for axial movement of the guide frame plate is arranged in the fixing sleeve. The cooperation of the limiting groove and the guide frame plate can not only limit the movement distance of the telescopic sleeve in the fixing sleeve, but also guide the movement of the telescopic sleeve.

[0008] Preferably, in order to ensure the stability of the position of the second lens after adjustment, a worm wheel is rotatably arranged in the fixing sleeve and fixedly sleeved on the shaft of the gear, a worm is rotatably sleeved on the fixing sleeve and meshingly connected with the worm wheel, and the output end of the motor is fixedly connected with the end of the worm. The cooperation of the worm and the worm wheel can realize the circumferential locking of the gear, prevent the gear from being reversed under the action of the rack, and ensure the stability of the position of the second lens after adjustment.

[0009] Preferably, in order to facilitate the installation of the second lens, a groove is arranged at the end of the telescopic sleeve away from the first lens, and the second lens is embedded in the groove. The groove facilitates the embedding of the second lens on the telescopic sleeve, and facilitates the specified installation of the second lens.

[0010] Preferably, in order to ensure that the second lens is stably embedded in the groove, a cap is threadedly sleeved at the end of the telescopic sleeve close to the second lens, and a through hole for light to pass through is arranged on the cap. The cap can stably install the second lens on the telescopic sleeve, and prevent the second lens from shaking on the telescopic sleeve.

[0011] Preferably, in order to facilitate the rotation of the cap: the annular array of the cap is provided with a plurality of anti-skid grooves. The anti-skid grooves can increase the contact area between the hand and the cap, facilitating the rotation of the cap.

[0012] The present application can change the light transmittance of the vehicle lamp by adjusting the distance between the second lens and the first lens, so that the vehicle lamp can provide appropriate illumination effect at night or in bad weather conditions, improving driving safety. The axial movement of the second lens is realized by the cooperation of the motor-driven gear and the rack, which is simple to operate and can prevent the second lens from tilting during adjustment. The entire adjustment structure is compact in design, occupies small space, and is easy to integrate into the vehicle lamp device. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 Fig. 1 is a structural schematic diagram of a vehicle lamp device with adjustable light transmittance;

[0014] Figure 2 Fig. 2 is a schematic diagram of another side of the structure in Fig. 1; Figure 1

[0015] Figure 3 Fig. 3 is a structural sectional view of the structure in Fig. 1; Figure 1

[0016] Figure 4 Fig. 4 is an exploded view of the structure of the cap, the second lens, and the telescopic sleeve.

[0017] In the drawings:

[0018] 1, lamp holder; 2, first lens; 3, fixed sleeve; 31, limiting groove; 4, second lens; 5, adjustment structure; 51, telescopic sleeve; 511, groove; 52, guide frame plate; 53, rack; 54, gear; 541, worm gear; 542, worm; 55, motor; 6, cap; 61, through hole; 62, anti-skid groove. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] The present embodiment provides a vehicle lamp device with adjustable light transmittance, as shown in Fig. 1. Figures 1-4 ​​As shown, the vehicle lamp device comprises a lamp holder 1, a first lens 2 arranged on the lamp holder 1, a fixing sleeve 3 fixedly sleeved on the lamp holder 1, a second lens 4 arranged on the fixing sleeve 3, and an adjusting structure 5 for driving the second lens 4 to move close to or away from the first lens 2; the adjusting structure 5 comprises an expansion sleeve 51 axially moving and connected with the second lens 4 by being inserted into the fixing sleeve 3, a guide frame plate 52 axially moving and connected with the expansion sleeve 51 in the fixing sleeve 3, a rack 53 fixedly connected in the guide frame plate 52, a gear 54 rotatably arranged in the fixing sleeve 3 and meshingly connected with the rack 53, and a motor 55 arranged on the fixing sleeve 3 for driving the gear 54 to rotate. By adjusting the distance between the second lens 4 and the first lens 2, the light transmittance of the vehicle lamp can be changed, so that the vehicle lamp can also provide suitable illumination effect in the night or under bad weather conditions, and the driving safety is improved. By adopting the mode that the motor 55 drives the gear 54 to cooperate with the rack 53, the axial movement of the second lens 4 is realized, the operation is simple, and the second lens 4 can be prevented from tilting during adjustment. The whole adjusting structure 5 is compact in design, small in space occupation, and easy to integrate into the vehicle lamp device. During adjustment, the motor 55 drives the gear 54 to rotate, the guide frame plate 52 moves axially in the fixing sleeve 3 under the cooperation of the gear 54 and the rack 53, then the expansion sleeve 51 drives the second lens 4 to move axially in the fixing sleeve 3, the position adjustment of the second lens 4 is realized, the second lens 4 moves towards the first lens 2 when the gear 54 is rotated clockwise, and the second lens 4 moves away from the first lens 2 when the gear 54 is rotated counterclockwise. When the second lens 4 moves towards the first lens 2, the air gap between the two lenses is reduced, the refraction and scattering of light are enhanced, and the light transmittance is increased. Conversely, when the second lens 4 moves away from the first lens 2, the air gap between the two lenses is increased, the refraction and scattering of light are weakened, and the light transmittance is reduced.

[0021] Specifically, the fixing sleeve 3 is provided with a limiting groove 31 for guiding the axial movement of the guide frame plate 52. Through the cooperation of the limiting groove 31 and the guide frame plate 52, the movement distance of the expansion sleeve 51 in the fixing sleeve 3 can be limited and the expansion sleeve 51 can be guided to move.

[0022] The fixing sleeve 3 is rotatably provided with a worm wheel 541 fixedly sleeved on the shaft of the gear 54, the fixing sleeve 3 is rotatably inserted with a worm shaft 542 meshingly connected with the worm wheel 541, and the output end of the motor 55 is fixedly connected with the end of the worm shaft 542. Through the cooperation of the worm shaft 542 and the worm wheel 541, the gear 54 can be circumferentially locked to prevent the gear 54 from being reversed under the action of the rack 53, and the position stability of the second lens 4 after adjustment is ensured.

[0023] The telescopic sleeve 51 is provided with a groove 511 at one end away from the first lens 2, and the second lens 4 is embedded in the groove 511. The groove 511 facilitates embedding the second lens 4 on the telescopic sleeve 51, and facilitates designated installation of the second lens 4.

[0024] The telescopic sleeve 51 is provided with a cap 6 at one end close to the second lens 4, and the cap 6 is provided with a through hole 61 for light to pass through. The cap 6 can stably install the second lens 4 on the telescopic sleeve 51, and prevent the second lens 4 from shaking on the telescopic sleeve 51.

[0025] The cap 6 is provided with a plurality of anti-skid grooves 62 in an annular array. The anti-skid grooves 62 can increase the contact area between the hand and the cap 6, and facilitate rotating the cap 6.

[0026] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical solution and concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An adjustable light transmittance vehicle lamp device, comprising a lamp holder (1), a first lens (2) arranged on the lamp holder (1), a fixed sleeve (3) fixedly sleeved on the lamp holder (1), a second lens (4) arranged on the fixed sleeve (3), and an adjusting structure (5) for driving the second lens (4) to move close to or away from the first lens (2). characterized in that The adjusting structure (5) comprises a telescopic sleeve (51) axially movably inserted in the fixed sleeve (3) and connected with the second lens (4), a guide frame plate (52) axially movably arranged in the fixed sleeve (3) and connected with the telescopic sleeve (51), a rack (53) fixedly connected in the guide frame plate (52), a gear (54) rotatably arranged in the fixed sleeve (3) and meshingly connected with the rack (53), and a motor (55) arranged on the fixed sleeve (3) for driving the gear (54) to rotate.

2. The adjustable light transmittance vehicle light device of claim 1, wherein: A limiting groove (31) for axial movement of the guide frame plate (52) is formed in the fixed sleeve (3).

3. The adjustable light transmittance vehicle light device of claim 1, wherein: A worm wheel (541) fixedly sleeved on a shaft of the gear (54) is rotatably arranged in the fixed sleeve (3), a worm (542) meshingly connected with the worm wheel (541) is rotatably inserted in the fixed sleeve (3), and an output end of the motor (55) is fixedly connected with an end of the worm (542).

4. The adjustable light transmittance vehicle light device of claim 1, wherein: A recess (511) is formed at an end of the telescopic sleeve (51) away from the first lens (2), and the second lens (4) is embedded in the recess (511).

5. The adjustable light transmittance vehicle light device of claim 4, wherein: A cap (6) is threadedly sleeved at an end of the telescopic sleeve (51) close to the second lens (4), and a through hole (61) for light to pass through is formed in the cap (6).

6. The adjustable light transmittance vehicle light device of claim 5, wherein: A plurality of anti-skid grooves (62) are annularly formed in the cap (6).

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