LED automobile lamp

Abstract

An LED automobile lamp includes a lens, a heat dissipation shell, a light source pillar, and a rear cover. The heat dissipation shell is mounted with a light-reflecting surface, the light source pillar is mounted at the bottom of the heat dissipation shell, the lens is arranged at the top of the heat dissipation shell, and the rear cover is arranged at the bottom of the light source pillar. A first light source plate and a second light source plate are symmetrically arranged on two sides of the light source pillar. Both the first light source plate and the second light source plate extend into a light-reflecting region surrounded by the light-reflecting surface and the lens. The top of the light source pillar is provided with a light-shielding sheet, and a bottom of the light source pillar is provided with a stepped plane coupling with the heat dissipation shell.

Claims

1. An LED automobile lamp, comprising: a lens, a heat dissipation shell, a light source pillar, and a rear cover; wherein the heat dissipation shell is internally mounted with a light-reflecting surface, the light source pillar is arranged at a bottom of the heat dissipation shell, the lens is arranged at a top of the heat dissipation shell, the rear cover is arranged at a bottom of the light source pillar, a first light source plate and a second light source plate are symmetrically arranged on two sides of the light source pillar, both the first light source plate and the second light source plate extend into a light-reflecting region, the light-reflecting region is surrounded by the light-reflecting surface and the lens, a top of the light source pillar is provided with a light-shielding sheet, and the bottom of the light source pillar is provided with a stepped plane, the stepped plane is coupled with the heat dissipation shell, wherein the light source pillar is fastened to the heat dissipation shell by a plurality of screws, and the light source pillar further comprises a fixed pillar body and a stepped limit dais, wherein two sides of the fixed pillar body are symmetrically provided with flat mounting surfaces for fixing the first light source plate and the second light source plate, a plurality of second mounting holes are uniformly arranged on the flat mounting surfaces, the light-shielding sheet is arranged on a top of the fixed pillar body, the stepped limit dais is arranged on a bottom of the fixed pillar body, and the stepped plane is arranged on an end face and the stepped limit dais is connected to the fixed pillar body on the end face.

2. The LED automobile lamp according to claim 1, wherein the bottom of the heat dissipation shell is provided with a cylindrical boss, the cylindrical boss is internally provided with a stepped circular hole fitting with the light source pillar, a plurality of guide positioning grooves with different sizes are arranged at intervals in a circumferential direction of the stepped limit dais, and the stepped circular hole of the cylindrical boss is internally provided with a plurality of guided anti-deviation ribs, and the plurality of guided anti-deviation ribs protrude inwardly and are fitted within the plurality of guide positioning grooves.

3. The LED automobile lamp according to claim 1, wherein the light-reflecting surface is an integrated structure or a combined structure.

4. The LED automobile lamp according to claim 1, wherein the light-reflecting surface is composed of two semi-light-reflecting surfaces and a transition surface, the transition surface is connected between the two semi-light-reflecting surfaces, the two semi-light-reflecting surfaces are respectively arranged in correspondence with the first light source plate and the second light source plate, and a focus of each of the two semi-light-reflecting surfaces is located on a surface of the corresponding light source plate, and the transition surface does not participate in a light distribution.

5. The LED automobile lamp according to claim 1, wherein an outer surface of the heat dissipation shell is provided with a heat dissipation fin, the heat dissipation fin is distributed in a direction perpendicular to a mounting direction of the automobile lamp, and the heat dissipation shell is made of aluminum alloy material.

6. The LED automobile lamp according to claim 1, wherein the light-reflecting surface is arranged on a concave surface of a light-reflecting component, a support hem is extended on an outer periphery of the light-reflecting component, a plurality of fixed mounting studs are arranged at intervals in the heat dissipation shell, and the support hem is provided with a plurality of first mounting holes corresponding to the plurality of fixed mounting studs.

7. The LED automobile lamp according to claim 1, wherein the rear cover is fastened to a cylindrical boss by the plurality of screws, the cylindrical boss is at the bottom of the heat dissipation shell, the rear cover is provided with an integrally-injected power copper pin, the rear cover is internally provided with a round hole for potting, and the rear cover is further provided with a nylon rivet for a hole sealing.

8. The LED automobile lamp according to claim 1, wherein when the light-reflecting surface distributes light, the lens is a flat transparent lens, and when the light-reflecting surface distributes light in combination with the lens, the lens is a pattern lens.

9. The LED automobile lamp according to claim 1, wherein a cross-sectional shape of the light-reflecting surface is a circle or a rectangle, when the cross-sectional shape of the light-reflecting surface is the rectangle, an auxiliary light-shielding sheet is also arranged at an end of the light source pillar, and an end of the auxiliary light-shielding sheet has a light-shielding hem extending toward the light source plate.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is an exploded view of the LED automobile lamp according to Embodiment 1 of the present disclosure;

(2) FIG. 2 is an exploded view of the heat dissipation shell of the LED automobile lamp according to Embodiment 1 of the present disclosure;

(3) FIG. 3 is an exploded view of the light source pillar of the LED automobile lamp according to Embodiment 1 of the present disclosure;

(4) FIG. 4 is an exploded view of the rear cover of the LED automobile lamp according to Embodiment 1 of the present disclosure;

(5) FIG. 5 is an exploded view of the LED automobile lamp according to Embodiment 2 of the present disclosure;

(6) FIG. 6 is an exploded view of the light source pillar of the LED automobile lamp according to Embodiment 2 of the present disclosure; and

(7) FIG. 7 is an exploded view of the LED automobile lamp according to Embodiment 3 of the present disclosure.

DETAILED DESCRIPTION OF THE EMBODIMENTS

Embodiment 1

(8) Referring to FIG. 1, an LED automobile lamp of the present disclosure includes the lens 1, the heat dissipation shell 2, the light source pillar 3, and the rear cover 4. The heat dissipation shell 2 is internally mounted with the light-reflecting surface 21, the light source pillar 3 is mounted at the bottom of the heat dissipation shell 2, the lens 1 is installed at the top of the heat dissipation shell 2, and the rear cover 4 is mounted at the bottom of the light source pillar 3. The first light source plate 31 and the second light source plate 32 are symmetrically mounted on two sides of the light source pillar 3. Both the first light source plate 31 and the second light source plate 32 extend into the light-reflecting region surrounded by the light-reflecting surface 21 and the lens 1. The top of the light source pillar 3 is provided with the light-shielding sheet 33, and the bottom of the light source pillar 3 is provided with the stepped plane 34 closely coupling with the heat dissipation shell 2.

(9) Further, referring to FIG. 3, the light source pillar 3 is tightly fastened to the heat dissipation shell 2 by a plurality of screws, and the light source pillar 3 further includes the fixed pillar body 310 and the stepped limit dais 320. Two sides of the fixed pillar body 310 are symmetrically provided with flat mounting surfaces 311 for fixing the first light source plate 31 and the second light source plate 32. A plurality of second mounting holes are uniformly arranged on the flat mounting surface 311. The light-shielding sheet 33 is arranged on the top of the fixed pillar body 310 to prevent the LED from directly emitting light.

(10) Further, referring to FIG. 3, the stepped limit dais 320 is arranged on the bottom of the fixed pillar body 310, and the stepped plane 34 is arranged on the end face where the stepped limit dais 320 is connected to the fixed pillar body 310. The bottom of the heat dissipation shell 2 is provided with the cylindrical boss 22, wherein the cylindrical boss 22 is internally provided with a stepped circular hole fitting with the light source pillar 3. Three guide positioning grooves 35 with different sizes are arranged at intervals in a circumferential direction of the stepped limit dais 320, and the stepped circular hole of the cylindrical boss 22 is internally provided with a plurality of guided anti-deviation ribs protruding inwardly and fitting with the guide positioning grooves 35. This structure can prevent the light source pillar 3 from being mounted upside down or being mounted on a bias, and can ensure homogeneity of mass-produced products.

(11) Further, referring to FIG. 2, as a combined structure, the light-reflecting surface 21 is composed of two semi-light-reflecting surfaces and a transition surface connected between the two semi-light-reflecting surfaces. The two semi-light-reflecting surfaces are respectively arranged by corresponding to the first light source plate 31 and the second light source plate 32, and the focus of each of the two semi-light-reflecting surfaces is located on the surface of the corresponding light source plate. The transition surface does not participate in the light distribution.

(12) Further, the outer surface of the heat dissipation shell 2 is provided with the heat dissipation fin 23, and the heat dissipation fin 23 is distributed in a direction perpendicular to the direction in which the automobile lamp is mounted. The heat dissipation shell 2 is made of aluminum alloy material, and thus has a good thermal conductivity.

(13) Further, the light-reflecting surface 21 is arranged on a concave surface of a light-reflecting component, and the support hem 210 is extended on the outer periphery of the light-reflecting component. A plurality of fixed mounting studs 20 are arranged at intervals in the heat dissipation shell 2, and the support hem 210 is provided with first mounting holes corresponding to the fixed mounting studs 20, facilitating installation and fixation.

(14) Further, referring to FIG. 4, the rear cover 4 is tightly fastened to the cylindrical boss 22 at the bottom of the heat dissipation shell 2 by screws, the rear cover 4 is provided with the integrally-injected power copper pin 41, the rear cover 4 is internally provided with the round hole 43 for potting thermally conductive waterproof glue, and the rear cover 4 is also provided with the nylon rivet 42 for hole sealing upon completion of glue potting.

(15) Furthermore, when a cross-sectional shape of the light-reflecting surface 21 is a circle, and when the light-reflecting surface 21 independently distributes light, a flat transparent lens is selected as the lens 1.

Embodiment 2

(16) Referring to FIG. 5 and FIG. 6, the differences between the present embodiment and Embodiment 1 are that the cross-sectional shape of the light-reflecting surface 21 is approximate to a rectangle, the auxiliary light-shielding sheet 36 is also arranged at an end of the light source pillar 3, and an end of the auxiliary light-shielding sheet 36 has a light-shielding hem extending toward the light source plate, wherein the auxiliary light-shielding sheet 36 is mounted in a direction where a light-shielding portion is down from the mounting location of the automobile lamp.

Embodiment 3

(17) Referring to FIG. 7, the differences between the present embodiment and Embodiment 1 are that the cross-sectional shape of the light-reflecting surface 21 is approximate to a rectangle, the light-reflecting surface 21 adopts an integrated structure, the light-reflecting surface 21 distributes light in combination with lens 1, and a pattern lens is selected as lens 1.

(18) The above embodiments are for illustrating the present disclosure rather than limiting the present disclosure, and any solution obtained by simply modifying the present disclosure shall fall within the scope of protection of the present disclosure.