Car lamp light distribution structure

Abstract

The utility model discloses a car lamp light distribution structure which comprises a decoration frame, a thick-wall piece, a bottom shell and an LED module, the LED module and the thick-wall piece are arranged in a cavity defined by the bottom shell and the decoration frame, the LED module is located behind the thick-wall piece, a Fresnel lens array is arranged between the LED module and the thick-wall piece, and the Fresnel lens array is located behind the thick-wall piece. The Fresnel lens array comprises a plurality of Fresnel lens units, lamp beads in the LED module correspond to the light incident surfaces of the Fresnel lens units, and the light emergent surfaces of the Fresnel lens units correspond to the light incident surface of the thick-wall part. And the emitted lamp beads are condensed by the Fresnel lens, then are emitted to the thick-wall piece and are emitted to the light outlet of the decorative frame from the light outlet surface of the thick-wall piece, so that the brightness uniformity is improved under the structure, and the occupied volume is small.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle lamp devices, in particular to a light distribution structure of a vehicle lamp. Background Art

[0002] In the current market, in order to achieve a more uniform lighting effect, the commonly used light distribution methods are generally more complicated and occupy a large volume. However, some lamps have a small internal space due to factors such as configuration design or vehicle shell design, and the commonly used light distribution structure cannot be installed. The existing light distribution mechanism of such lamps has the problem of poor brightness uniformity, which needs to be improved. Utility Model Content

[0003] In order to solve at least one of the above technical defects, the utility model provides the following technical solutions:

[0004] The present application document discloses a vehicle lamp light distribution structure, comprising a decorative frame, a thick-walled component, a bottom shell, and an LED module. The LED module and the thick-walled component are arranged in a cavity surrounded by the bottom shell and the decorative frame, the LED module is located behind the thick-walled component, a Fresnel lens array is arranged between the LED module and the thick-walled component, the Fresnel lens array comprises a plurality of Fresnel lens units, the lamp beads in the LED module correspond to the light incident surface of the Fresnel lens unit, and the light emitting surface of the Fresnel lens unit corresponds to the light incident surface of the thick-walled component.

[0005] The improved structure in this scheme corresponds to the lamp beads in the LED module with the Fresnel lens unit. The light emitted by the lamp beads is focused by the Fresnel lens and then emitted to the thick-walled part, and then emitted from the light-emitting surface of the thick-walled part to the light outlet of the decorative frame. Under this structure, the brightness uniformity is improved and the occupied volume is small.

[0006] Furthermore, the thick-walled part includes a main body and an arm, the arm is located at two ends of the main body, a plurality of protrusions are formed at intervals along the length direction on the front end surface of the main body and a light outlet one is arranged at the corresponding decorative frame, the protrusions are arranged corresponding to the light outlet one, a light outlet two is arranged at the decorative frame corresponding to the light outlet surface of the arm, and the light outlet surface of the arm is arranged corresponding to the light outlet two. In this scheme, a thick-walled part configuration is designed, and arms are arranged at both ends of the main body, multiple protrusions on the main body correspond to the light outlet one, and the arm corresponds to the light outlet two, which further improves the aesthetics of the lighting and improves the uniformity of the brightness.

[0007] Furthermore, the light-emitting surface of the protrusion and the light-emitting surface of the arm are both formed with diffusion patterns, such as tooth grooves, etc., which further improve the uniformity of brightness.

[0008] Furthermore, a plurality of grooves are provided at the light incident surfaces of the main body and the arm, and the grooves extend along the length direction of the main body, thereby further improving the uniformity of light.

[0009] Furthermore, it also includes an installation part, which includes a first support plate and a second support plate. The first support plate is arranged on the inner side surface of the main body, and the second support plate is arranged on the inner side surface of the arm. The first support plate and the second support plate are both provided with a fastening column 1, and the fastening column 1 is docked with a fastening column 2 correspondingly arranged on the decorative frame and fixed by a fastener 1, so that the installation part is docked with the decorative frame, and it is convenient to complete the assembly with the bottom shell and other components after pre-assembly. The fastener 1 is such as a screw, which facilitates assembly and molding.

[0010] Furthermore, a fastening column three is provided on the decorative frame and the fastening column three is connected with a fastening column four correspondingly provided on the bottom shell and fixed by a fastener two. After the fastening column three and the fastening column four are connected, they are fixed as a whole by a screw-type fastener two, which is convenient for assembly and molding.

[0011] Furthermore, the Fresnel lens array includes a mounting frame, which includes a carrier plate, a first fixing plate, and a second fixing plate. Fresnel lens units are sequentially arranged on the carrier plate along its length direction. The first fixing plate and the second fixing plate are respectively arranged on the top surface and the bottom surface of the carrier plate. The first fixing plate and the second fixing plate are fixed to the fastening column five arranged on the bottom shell through the fastener three. Adding the mounting frame facilitates docking and fixing with the bottom shell, etc. The Fresnel lens unit is formed on the carrier plate in the mounting frame, and the first fixing plate and the second fixing plate are fixed to the fastening column five through the screw-type fastener three, which facilitates assembly and molding.

[0012] Furthermore, a support platform is formed at the cavity wall of the bottom shell, a slot one is arranged on the support platform, the lamp board in the LED module is connected to a fixing plate one, the carrier board is inserted into one of the slots, and the carrier board is pre-fixed by the slot one on the support platform, so as to facilitate further tightening with subsequent screws.

[0013] Furthermore, slot two is provided on the support platform, slot three is provided at one of the fixing plates, the top of the lamp board in the LED module is inserted in slot three and the bottom is inserted in slot two; during installation, the lamp board is inserted in slot two for pre-fixation; when the installation frame is docked and fixed, the top of the lamp board is inserted into slot two, and fixing plate one cooperates with the support platform to clamp and fix the lamp board.

[0014] Furthermore, a fixing plate three is arranged at the side of the bottom shell and a fixing plate four is arranged at the side of the top surface of the decorative frame. The fixing plate three is arranged horizontally and the fixing plate four is arranged vertically. Adding the fixing plate two and the fixing plate three facilitates docking with the external mechanism and installation.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The utility model designs a light distribution structure of LED modules, Fresnel lens arrays, and thick-walled parts, which improves the uniformity of light and occupies a small volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 is a structural schematic diagram of the light distribution structure of the vehicle lamp in Example 1;

[0019] Figure 2 is a schematic cross-sectional structure diagram of the light distribution structure of the vehicle lamp in Example 1;

[0020] Figure 3 yes Figure 1 The schematic diagram of the structure after removing the decorative frame;

[0021] Figure 4 It is a schematic diagram of the structure of thick-walled parts;

[0022] Figure 5 It is a schematic diagram of the structure of thick-walled parts;

[0023] Figure 6 is a schematic diagram of the structure of a Fresnel lens array;

[0024] Figure 7 It is a structural diagram of the decorative frame;

[0025] Wherein, the accompanying drawings are marked as follows:

[0026] 1. Bottom shell; 2. Decorative frame; 3. Thick-walled parts; 4. Fresnel lens array; 5. LED module; 10. Fixing plate three; 11. Slot two; 12. Slot one; 13. Support platform; 14. Fastening column four; 15. Fastening column five; 20. Fixing plate four; 21. Light outlet one; 22. Light outlet two; 23. Fastening column three; 24. Fastening column two; 31. Body; 32. Protrusion; 33. Arm; 34. First support plate; 35. Second support plate; 36. Fastening column one; 37. Groove; 40. Carrier plate; 41. Fresnel lens unit; 42. Fixing plate one; 43. Slot three; 44. Fixing plate two; 51. Light board; 100. Positioning column; 101. Mounting hole. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0028] Example 1

[0029] like Figure 1-Figure 2As shown, in this example, a vehicle lamp light distribution structure includes a decorative frame 2, a thick-walled component 3, a bottom shell 1, and an LED module 5. The LED module 5 and the thick-walled component 3 are installed in a cavity surrounded by the bottom shell 1 and the decorative frame 2. The LED module 5 is located behind the thick-walled component 3 and a Fresnel lens array 4 is placed between the two. The LED module adopts a common configuration of fixing lamp beads on a lamp board. The light emitted by the LED lamp beads is focused by the Fresnel lens and then emitted toward the thick-walled component, and then evenly emitted from the light outlet of the decorative frame.

[0030] For the Fresnel lens array, if Figure 2 , Figure 6 As shown, the Fresnel lens array 4 includes a mounting frame and a Fresnel lens unit 41. The mounting frame includes a carrier plate 40, a fixing plate 1 42, and a fixing plate 2 44. A plurality of Fresnel lens units 41 are sequentially formed on the strip-shaped carrier plate 40 along its length direction. The Fresnel lens units are common multi-concentric circle types, and the Fresnel lens units correspond one-to-one to the LED lamp beads in the LED module.

[0031] The top and bottom surfaces of the carrier plate 40 are respectively convexly formed with a fixing plate 1 42 and a fixing plate 2 44, and the whole is in a Z shape. Figure 2 , Figure 6 As shown, a support platform 13 is formed on the cavity wall of the bottom shell 1, and a slot 12 is formed on the top surface of the support platform 13. When installing, the bottom of the carrier is inserted into the slot 12 for pre-fixation. Through holes are formed on the fixing plate 1 42 and the fixing plate 2 44, and a cylindrical fastening column 5 14 is formed on the corresponding cavity wall of the bottom shell. After the through holes of the fixing plate 1 42 and the fixing plate 2 44 correspond to the fastening column 5 14, a screw is used as a fastener 3, and the screw is screwed into the cylindrical cavity of the fastening column 5 from the through hole to complete the fixation.

[0032] like Figure 2 As shown, the rear of the Fresnel lens array 4 is the LED module 5, and the LED module is fixed according to the needs, such as fixing with the bottom shell screws, etc. In this example, the LED module is displayed by clamping and fixing. Specifically, a slot 2 is formed on the support table, which is located behind the slot 1. When installing, the bottom of the lamp board 51 is inserted into the slot 2 11 for pre-fixation. A slot 3 43 is formed on the bottom surface of the fixing plate 1 42. After the lamp board is pre-fixed, the slot 3 43 is plugged with the top of the lamp board 51. The through holes at the fixing plates 1 and 2 are synchronously corresponding to the fastening column 5, and the lamp board is clamped and fixed by the support table and the fixing plate 1.

[0033] For thick-walled parts, Figure 4 , Figure 5As shown, the thick-walled member 3 includes a body 31 and an arm 33. The two ends of the strip-shaped body 31 are formed with plate-shaped arms 33. The arms 33 extend forward horizontally, and the thick-walled member 3 is in a groove shape as a whole. The front end surface of the body 31 is in an inclined plane shape and a plurality of strip-shaped protrusions 32 are formed at intervals along the length direction. The protrusions 32 are formed at the decorative frame 2 to form a light outlet 21. The protrusions correspond to the light outlet 21 one by one. The protrusions 32 can be located behind the light outlet 21 or partially extend into the light outlet 1. The light outlet surface of the arm 33 corresponds to the light outlet 22 formed at the decorative frame 2. The light outlet surface of the arm 33 corresponds to the light outlet 22. In order to improve the uniformity of illumination, a diffusion pattern can be formed on the light outlet surface of the arm 33 and the light outlet surface of the protrusions. The diffusion pattern is like a tooth groove. Furthermore, a groove 37 may be formed at the light incident surface of the body 31 and the arm 33 . If the groove 37 extends along the length direction of the body 31 , it also helps to improve the uniformity of light.

[0034] To facilitate fixing, the thick-walled member 3 also includes a mounting portion, such as 4, Figure 5 As shown, the mounting portion includes a first support plate 34 and a second support plate 35. The first support plate 34 is formed on the inner side surface of the body 31, and the second support plate 35 is formed on the inner side surface of the arm 33. A cylindrical fastening column 1 36 is formed on the first support plate 34 and the second support plate 35, and a cylindrical fastening column 2 24 is formed at a corresponding position on the bottom surface of the decorative frame 2. The thick-walled component 3 and the decorative frame 2 are pre-assembled. After the fastening column 1 36 of the thick-walled component 3 is abutted against the fastening column 24, a screw is used as a fastener 1, and is screwed into the cylindrical cavity of the fastening column 2 from the bottom of the fastener 1 to complete the fixation.

[0035] Pre-assemble the thick-walled parts and the decorative frame, pre-assemble the light board, Fresnel lens array and bottom shell in the LED module, and then fix the bottom shell and the decorative frame. Figure 2 , Figure 3 , Figure 7 As shown, a cylindrical fastening column three 23 is formed on the bottom surface of the decorative frame 2, and a cylindrical fastening column four 14 is formed on the cavity wall of the bottom shell 1 corresponding to the fastening column three 23. After the fastening column four 14 is connected with the fastening column three 23, a screw is used as a fastener two to screw into the fastening column four and the fastening column three from the bottom of the bottom shell to complete the fixation.

[0036] To facilitate the connection between the light distribution structure and external devices, such as Figure 1 As shown, a fixing plate three 10 is horizontally formed on the left and right sides of the bottom shell 1, and a fixing plate four 20 is longitudinally formed on the top surface of the rear end of the decorative frame 2. The fixing plate three is configured such as a mounting hole 101 is formed on the plate body and a positioning column 100 is formed on its side. It can be pre-positioned by the positioning column, and screws or the like are screwed into the mounting holes to fix it. The fixing plate four is configured such as a tongue plate protruding downwardly at the top wall of the frame body, or a mounting hole is formed on the plate body, etc., which can be selected according to needs and will not be elaborated here.

[0037] When in use, the lamp beads in the LED module correspond to the light incident surface of the Fresnel lens unit, and the light emitting surface of the Fresnel lens unit corresponds to the light incident surface of the thick-walled part. The emitted light is focused by the Fresnel lens and then emitted to the thick-walled part, and then emitted from the light emitting surface of the thick-walled part to the light outlet of the decorative frame, thereby improving the uniformity of light and reducing the volume occupied.

[0038] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A vehicle lamp light distribution structure, comprising a decorative frame (2), a thick-walled member (3), a bottom shell (1), and an LED module (5), wherein the LED module (5) and the thick-walled member (3) are arranged in a cavity enclosed by the bottom shell (1) and the decorative frame (2), and the LED module (5) is located behind the thick-walled member (3), characterized in that: A Fresnel lens array (4) is arranged between the LED module (5) and the thick-walled member (3), the Fresnel lens array (4) comprising a plurality of Fresnel lens units (41), the lamp beads in the LED module (5) corresponding to the light incident surfaces of the Fresnel lens units (41), and the light emitting surfaces of the Fresnel lens units (41) corresponding to the light incident surfaces of the thick-walled member (3).

2. The vehicle lamp light distribution structure according to claim 1, characterized in that: The thick-walled component (3) comprises a body (31) and an arm (33), wherein the arm (33) is located at two ends of the body (31), a plurality of protrusions (32) are formed at intervals along the length direction at the front end surface of the body (31), and a light outlet (21) is arranged at the corresponding decorative frame (2), the protrusion (32) is arranged correspondingly to the light outlet (21), the light outlet surface of the arm (33) corresponds to the light outlet (2) at the decorative frame (2) and the light outlet surface of the arm is arranged correspondingly to the light outlet (22).

3. The vehicle lamp light distribution structure according to claim 2, characterized in that: The light-emitting surface of the protrusion (32) and the light-emitting surface of the arm portion (33) are both formed with diffusion patterns.

4. The vehicle lamp light distribution structure according to claim 2, characterized in that: A plurality of grooves (37) are arranged at the light incident surfaces of the main body (31) and the arm portion (33), and the grooves (37) extend along the length direction of the main body (31).

5. The vehicle lamp light distribution structure according to claim 2, characterized in that: The invention also comprises a mounting portion, wherein the mounting portion comprises a first supporting plate (34) and a second supporting plate (35), wherein the first supporting plate (34) is arranged on the inner side surface of the body (31), and the second supporting plate (35) is arranged on the inner side surface of the arm portion (33), and a first fastening column (36) is arranged on the first supporting plate (34) and the second supporting plate (35), and the first fastening column (36) is connected to a second fastening column (24) correspondingly arranged on the decorative frame (2) and fixed by a first fastener.

6. The vehicle lamp light distribution structure according to claim 1, characterized in that: The decorative frame (2) is provided with a third fastening column (23), and the third fastening column (23) is butted with a fourth fastening column (14) correspondingly provided on the bottom shell (1) and fixed by means of a second fastener.

7. The vehicle lamp light distribution structure according to claim 1, characterized in that: The Fresnel lens array (4) comprises a mounting frame, the mounting frame comprising a carrier plate (40), a first fixing plate (42), and a second fixing plate (44); the Fresnel lens units (41) are arranged in sequence on the carrier plate (40) along its length direction; the first fixing plate (42) and the second fixing plate (44) are arranged on the top surface and the bottom surface of the carrier plate (40), respectively; the first fixing plate (42) and the second fixing plate (44) are fixed to a fastening column (15) arranged on the bottom shell (1) by a fastener (3).

8. The vehicle lamp light distribution structure according to claim 7, characterized in that: A support platform (13) is formed at the cavity wall of the bottom shell (1), a slot one (12) is arranged on the support platform (13), a lamp board (51) in the LED module (5) is connected to a fixing board one (42), and the carrier board (40) is inserted into the slot one (12).

9. The vehicle lamp light distribution structure according to claim 8, characterized in that: The support platform (13) is provided with a second slot (11), the fixing plate (42) is provided with a third slot (43), the top of the lamp board (51) in the LED module (5) is inserted into the third slot (43) and the bottom thereof is inserted into the second slot (11).

10. The vehicle lamp light distribution structure according to claim 1, characterized in that: A fixing plate three (10) is arranged on the side of the bottom shell (1) and a fixing plate four (20) is arranged on the side of the top surface of the decorative frame (2), wherein the fixing plate three (10) is arranged horizontally and the fixing plate four (20) is arranged vertically.

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