LED car lamp

Abstract

The present invention proposes an LED automobile lamp, comprising a lens, a heat dissipation shell, a light source column and a back cover, wherein a reflective surface is installed inside the heat dissipation shell, the light source column is installed at the bottom of the heat dissipation shell, the lens is installed at the top of the heat dissipation shell, the back cover is installed at the bottom of the light source column, a first light source board and a second light source board are symmetrically installed on both sides of the light source column, the first light source board and the second light source board extend into the reflective area surrounded by the reflective surface and the lens, the top of the light source column has a shading sheet, and the bottom has a step plane that fits tightly with the heat dissipation shell. A new type of LED lamp structure and light distribution design is provided to ensure the systematic elimination of accessory installation errors and ensure the consistency of mass-produced products. Through optimized thermal conductivity and heat dissipation design, it is ensured that the LED operating junction temperature is in a relatively low safety range, ensuring that the LED lamp has theoretically high light efficiency, long life and high reliability.

Description

[Technical field]

[0001] The invention relates to the technical field of electric light sources, in particular to an LED automobile lamp. [Background technology]

[0002] Existing LED car lights generally have the following disadvantages:

[0003] 1. During the product assembly process, due to component assembly errors, the product consistency is poor. A large proportion of mass-produced headlights cannot meet regulatory requirements. Full product inspection and subsequent adjustment are required to ensure the necessary pass rate;

[0004] 2. Insufficient thermal design or insufficient reliability can’t guarantee the theoretically high light efficiency, long life, and high reliability of LEDs, and may even lead to early failure;

[0005] 3. Unscientific or insufficient heat dissipation design causes the LED operating junction temperature to exceed the safe range, making it impossible to guarantee the theoretically high luminous efficiency, long life, and high reliability of the LED, and even leading to early failure.

[0006] 4. The LED structural design is not conducive to optical design or the light distribution design method is unreasonable, which makes it difficult for the light distribution to meet regulatory requirements and cannot ensure the safety and comfort of automotive lighting. [Summary of the invention]

[0007] The purpose of the present invention is to solve the problems in the prior art and to provide an LED automobile lamp that can ensure the consistency of mass-produced products and has high light efficiency, long life and high reliability.

[0008] To achieve the above-mentioned purpose, the present invention proposes an LED automobile lamp, comprising a lens, a heat dissipation shell, a light source column and a back cover, wherein a reflective surface is installed inside the heat dissipation shell, the light source column is installed at the bottom of the heat dissipation shell, the lens is installed at the top of the heat dissipation shell, the bottom of the light source column is installed with a back cover, a first light source board and a second light source board are symmetrically installed on both sides of the light source column, the first light source board and the second light source board extend into a reflective area surrounded by the reflective surface and the lens, the top end of the light source column has a shading sheet, and the bottom end has a stepped plane that closely matches the heat dissipation shell.

[0009] Preferably, the light source column is fastened to the heat dissipation shell by a plurality of screws, and the light source column also includes a fixed column body and a step limit platform, and both sides of the fixed column body have symmetrically arranged mounting planes for fixing the first light source board and the second light source board, and a plurality of second mounting holes are evenly distributed on the mounting planes, the shading sheet is arranged at the top end of the fixed column body, and the step limit platform is arranged at the bottom end of the fixed column body, and the end face of the step limit platform connected to the fixed column body has a step plane.

[0010] Preferably, a cylindrical boss is provided at the bottom of the heat dissipation shell, the interior of the cylindrical boss has a stepped circular hole for cooperating with the light source column, the stepped limit platform is provided with a plurality of guide positioning grooves of inconsistent sizes at circumferential intervals, and the stepped circular hole of the cylindrical boss is provided with a plurality of inner protruding guide anti-deflection ribs that are adapted to the guide positioning grooves.

[0011] Preferably, the reflective surface is an integrated structure or a combined structure.

[0012] Preferably, the reflective surface consists of two semi-reflective surfaces and a transition surface connected between the two semi-reflective surfaces, the two semi-reflective surfaces are respectively arranged corresponding to the first light source panel and the second light source panel, and the focus of each semi-reflective surface is located on the surface of the corresponding side light source panel, and the transition surface does not participate in light distribution.

[0013] Preferably, the outer surface of the heat dissipation shell is provided with heat dissipation fins, the distribution direction of the heat dissipation fins is consistent with the vertical direction of the installation of the vehicle lamp, and the heat dissipation shell is made of aluminum alloy.

[0014] Preferably, the reflective surface is arranged on the concave surface of the reflective component, a supporting folded edge extends from the outer periphery of the reflective component, a plurality of fixed mounting columns are arranged at intervals inside the heat dissipation shell, and a first mounting hole corresponding to the fixed mounting column is opened on the supporting folded edge.

[0015] Preferably, the back cover is fastened to the cylindrical boss at the bottom of the heat dissipation shell by screws, the back cover has an integrally injected power copper foot, a circular hole for potting is provided inside the back cover, and the back cover is also equipped with nylon rivets for sealing the hole.

[0016] Preferably, when the reflective surface distributes light independently, the lens is a plane transparent lens, and when the reflective surface and the lens distribute light in combination, the lens is a patterned lens.

[0017] Preferably, the cross-sectional shape of the reflecting surface is approximately circular or rectangular. When the cross-sectional shape of the reflecting surface is rectangular, an auxiliary shading sheet is also installed at the end of the light source column, and one end of the auxiliary shading sheet has a shading folded edge extending toward the light source panel.

[0018] Beneficial effects of the invention: The invention provides a new type of LED car light structure and light distribution design to ensure the systematic elimination of accessory installation errors and ensure the consistency of mass-produced products. Through the optimized thermal conductivity and heat dissipation design, it can ensure that the LED working junction temperature is within a relatively low safety range, ensuring that the LED car light has theoretically high light efficiency, long life, and high reliability. The light distribution design combined with the structural design can simplify the light distribution design, making it easier for the light distribution design to meet regulatory requirements to ensure the safety and comfort of car lighting.

[0019] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0020] Figure 1 It is an exploded schematic diagram of Example 1 of an LED automobile lamp of the present invention;

[0021] Figure 2 It is an exploded schematic diagram of a heat dissipation housing of a first embodiment of an LED automobile lamp of the present invention;

[0022] Figure 3 It is an exploded schematic diagram of a light source column of Example 1 of an LED automobile lamp of the present invention;

[0023] Figure 4 It is an exploded schematic diagram of a rear cover of Example 1 of an LED automobile lamp of the present invention;

[0024] Figure 5 This is an exploded schematic diagram of Example 2 of an LED automobile lamp of the present invention;

[0025] Figure 6 It is an exploded schematic diagram of a light source column of Example 2 of an LED automobile lamp of the present invention;

[0026] Figure 7 It is an exploded schematic diagram of Example 3 of an LED automobile lamp of the present invention. [Specific implementation method]

[0027] Example 1

[0028] See also Figure 1The present invention discloses an LED automobile lamp, comprising a lens 1, a heat dissipation shell 2, a light source column 3 and a back cover 4, wherein a reflective surface 21 is installed inside the heat dissipation shell 2, the light source column 3 is installed at the bottom of the heat dissipation shell 2, the lens 1 is installed at the top of the heat dissipation shell 2, the back cover 4 is installed at the bottom of the light source column 3, a first light source board 31 and a second light source board 32 are symmetrically installed on both sides of the light source column 3, the first light source board 31 and the second light source board 32 extend into a reflective area surrounded by the reflective surface 21 and the lens 1, the top end of the light source column 3 has a shading sheet 33, and the bottom end has a stepped plane 34 that closely matches the heat dissipation shell 2.

[0029] Further, see Figure 3 The light source column 3 is fastened to the heat dissipation shell 2 by a plurality of screws. The light source column 3 also includes a fixed column body 310 and a stepped limit platform 320. Both sides of the fixed column body 310 have symmetrically arranged mounting planes 311 for fixing the first light source board 31 and the second light source board 32. A plurality of second mounting holes are evenly distributed on the mounting plane 311. The shading sheet 33 is arranged at the top of the fixed column body 310 to prevent the LED light from directly emitting light.

[0030] Further, see Figure 3 The step stop platform 320 is arranged at the bottom end of the fixed column body 310, and the end surface of the step stop platform 320 connected to the fixed column body 310 has a step plane 34. The bottom of the heat dissipation housing 2 is provided with a cylindrical boss 22, and the inside of the cylindrical boss 22 has a step circular hole for installation with the light source column 3. The step stop platform 320 is provided with three guide positioning grooves 35 of different sizes at intervals in the circumferential direction. The step circular hole of the cylindrical boss 22 is provided with a plurality of inner protruding guide anti-deviation ribs adapted to the guide positioning grooves 35. This structure can prevent the light source column from being installed upside down or deviated, and ensure the consistency of mass-produced products.

[0031] Further, see Figure 2 The reflecting surface 21 is a combined structure, and the reflecting surface 21 is composed of two semi-reflecting surfaces and a transition surface connected between the two semi-reflecting surfaces. The two semi-reflecting surfaces are respectively arranged corresponding to the first light source board 31 and the second light source board 32, and the focus of each semi-reflecting surface is located on the surface of the corresponding side light source board, and the transition surface does not participate in light distribution.

[0032] Furthermore, the outer surface of the heat dissipation housing 2 is provided with heat dissipation fins 23, and the distribution direction of the heat dissipation fins 23 is consistent with the vertical direction of the installation of the vehicle lamp. The heat dissipation housing 2 is made of aluminum alloy and has good thermal conductivity.

[0033] Furthermore, the reflective surface 21 is arranged on the concave surface of the reflective component, and a supporting folded edge 210 extends from the outer periphery of the reflective component. A plurality of fixed mounting columns 20 are arranged at intervals inside the heat dissipation shell 2, and a first mounting hole corresponding to the fixed mounting column 20 is opened on the supporting folded edge 210 to facilitate installation and fixation.

[0034] Further, see Figure 4 The back cover 4 is fastened to the cylindrical boss 22 at the bottom of the heat dissipation shell 2 by screws. The back cover 4 has an integrally injected power copper foot 41. A round hole 43 is provided in the back cover 4 for heat-conducting and waterproof glue potting. The back cover 4 is also equipped with a nylon rivet 42 for sealing the hole after the glue potting is completed.

[0035] Furthermore, the cross-sectional shape of the reflective surface 21 is circular, the reflective surface 21 is independently light-distributed, and the lens 1 is a planar transparent lens.

[0036] Example 2

[0037] See also Figure 5 and Figure 6 The difference from Example 1 is that the cross-sectional shape of the reflecting surface 21 is approximately rectangular, and an auxiliary shading sheet 36 is also installed at the end of the light source column 3. One end of the auxiliary shading sheet 36 has a shading folded edge extending toward the light source panel, and the installation direction of the auxiliary shading sheet 36 is the downward direction of the shading part at the installation position of the car light.

[0038] Example 3

[0039] See also Figure 7 The difference from Example 1 is that the cross-sectional shape of the reflecting surface 21 is approximately rectangular, the reflecting surface 21 adopts an integrated structure, the reflecting surface 21 and the lens 1 are combined for light distribution, and the lens 1 is a patterned lens.

[0040] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. An LED automobile lamp, characterized in that: The invention comprises a lens (1), a heat dissipation shell (2), a light source column (3) and a back cover (4); a reflective surface (21) is installed inside the heat dissipation shell (2); the light source column (3) is installed at the bottom of the heat dissipation shell (2); the lens (1) is installed at the top of the heat dissipation shell (2); the back cover (4) is installed at the bottom of the light source column (3); a first light source board (31) and a second light source board (32) are symmetrically installed on both sides of the light source column (3); the first light source board (31) and the second light source board (32) extend into the reflective area surrounded by the reflective surface (21) and the lens (1); the top end of the light source column (3) has a light shielding sheet (33); the bottom end has a stepped plane (34) that is tightly matched with the heat dissipation shell (2); the light source column (3) is fastened to the heat dissipation shell (2) by a plurality of screws The light source column (3) further comprises a fixed column body (310) and a stepped stopper (320); the two sides of the fixed column body (310) have symmetrically arranged mounting planes (311) for fixing the first light source board (31) and the second light source board (32); the mounting planes (311) are evenly distributed with a plurality of second mounting holes; the light shielding sheet (33) is arranged at the top end of the fixed column body (310); the stepped stopper (320) is arranged at the bottom end of the fixed column body (310); the end surface of the stepped stopper (320) connected to the fixed column body (310) has a stepped plane (34); the outer surface of the heat dissipation shell (2) is provided with heat dissipation fins (23); the distribution direction of the heat dissipation fins (23) is consistent with the vertical direction of the installation of the vehicle lamp; the heat dissipation shell (2) is made of aluminum alloy.

2. The LED automobile lamp according to claim 1, characterized in that: A cylindrical boss (22) is provided at the bottom of the heat dissipation housing (2), the cylindrical boss (22) has a stepped circular hole inside thereof for mounting in cooperation with the light source column (3), a plurality of guide positioning grooves (35) of inconsistent sizes are arranged at circumferential intervals on the stepped limiting platform (320), and a plurality of inner protruding guide anti-deflection ribs matching the guide positioning grooves (35) are arranged in the stepped circular hole of the cylindrical boss (22).

3. The LED automobile lamp according to claim 1, characterized in that: The reflective surface (21) is an integrated structure or a combined structure.

4. The LED automobile lamp according to claim 1, characterized in that: The reflective surface (21) is composed of two semi-reflective surfaces and a transition surface connected between the two semi-reflective surfaces, the two semi-reflective surfaces are respectively arranged corresponding to the first light source panel (31) and the second light source panel (32), and the focus of each semi-reflective surface is located on the surface of the corresponding side light source panel, and the transition surface does not participate in light distribution.

5. The LED automobile lamp according to claim 1, characterized in that: The reflective surface (21) is arranged on the inner concave surface of the reflective component, a supporting folded edge (210) extends from the outer periphery of the reflective component, a plurality of fixed mounting columns (20) are arranged at intervals inside the heat dissipation housing (2), and first mounting holes corresponding to the fixed mounting columns (20) are opened on the supporting folded edge (210).

6. The LED automobile lamp according to claim 1, characterized in that: The rear cover (4) is fastened to the cylindrical boss (22) at the bottom of the heat dissipation housing (2) by means of screws, the rear cover (4) has an integrally-injected power copper foot (41), a round hole (43) for potting is provided in the rear cover (4), and the rear cover (4) is also provided with a nylon rivet (42) for sealing the hole.

7. The LED automobile lamp according to claim 1, characterized in that: When the reflective surface (21) distributes light independently, the lens (1) is a planar transparent lens; when the reflective surface (21) and the lens (1) distribute light in combination, the lens (1) is a patterned lens.

8. The LED automobile lamp according to claim 1, characterized in that: The cross-sectional shape of the reflective surface (21) is approximately circular or rectangular. When the cross-sectional shape of the reflective surface (21) is rectangular, an auxiliary shading sheet (36) is also installed at the end of the light source column (3), and one end of the auxiliary shading sheet (36) has a shading folded edge extending towards the light source plate.

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