TWI908621B - Retro-style automotive headlamp using an led light source - Google Patents

Abstract

The invention relates to a retro-style automotive headlamp using an LED light source, which comprises a reflective lamp base, a heat dissipation unit, a low beam unit, a high beam unit, a shading unit, and an optical lamp cover. The reflective lamp base is bowl-shaped, with a focusing reflective surface and a mounting slot area on its inner surface, the heat dissipation unit is installed within the mounting slot area and includes a vertical wall corresponding to the mounting slot area, as well as an assembly wall extending from one side of the vertical wall away from the mounting slot area. The distance between the upper and lower surfaces of the assembly wall gradually decreases from the end near the vertical wall to the end farther from it, making the upper surface sloped downward and the lower surface sloped upward. The low beam unit and high beam unit are installed on the upper and lower surfaces of the assembly wall, respectively. The shading unit consists of a vertical section and a horizontal section, with the vertical section attached to the end of the assembly wall farthest from the vertical wall, the horizontal section extends toward the vertical wall, with its edge forming an arc shape. The optical lamp cover is attached to the front end of the reflective lamp base, and its inner surface features an optical diffusion surface composed of multiple optical diffusion zones.

Description

Retro-style automotive headlights using LED light sources

This invention relates to a retro-style headlight for automobiles that uses LED light sources, particularly an LED (light-emitting diode) headlight that uses LEDs as the light source for both low and high beams, and that can transform the projected point light source into a glossy surface, thus complying with regulations, and whose lampshade appearance presents a retro visual effect due to the texture of the multiple optical diffusion areas transmitted through its inner surface.

Antique cars often evoke a sense of nostalgia and possess historical significance, especially as they record the design concepts, craftsmanship, and cultural trends of their time, thus imbuing them with value; for this reason, antique cars become collectibles. Some collectors even restore antique cars and drive them on the road, hoping to make the most of them.

Because early vehicles used bulbs for both low and high beams in their headlights, and bulbs are consumables with a limited lifespan, if a bulb is discontinued and a replacement of the same specification cannot be obtained, the classic car will be road undrivable. Installing modern headlights would create a mismatch between the old and new design of the classic car.

Today, the inventors have taken this into consideration and actively developed a retro headlight that complies with regulations and can be matched with classic cars.

In view of the above-mentioned common knowledge, the purpose of the present invention is to provide a headlamp that uses LEDs as the light source and whose lampshade appearance presents a retro visual effect due to the texture of the multiple optical diffusion areas transmitted through its inner surface.

The above-mentioned objective of this invention is achieved through the following techniques:

A retro-style automotive headlight using LED light sources includes a reflector mount, a heat-conducting unit, a low beam unit, a high beam unit, a light-shielding unit, and an optical lens; wherein:

The reflector base is bowl-shaped, with a light-concentrating reflective surface formed on its inner surface, and a recessed mounting groove area is provided.

The heat-conducting unit is installed in the mounting groove area. The heat-conducting unit includes a vertical wall corresponding to the mounting groove area and an assembly wall extending away from the mounting groove area on one side surface of the vertical wall. The distance between the upper and lower surfaces of the assembly wall gradually decreases from the end adjacent to the vertical wall to the end away from the vertical wall, so that the upper surface is inclined downward and the lower surface is inclined upward.

The low beam unit is installed on the upper surface of the assembly wall. The low beam unit includes a low beam circuit board and at least one low beam LED light source installed on the low beam circuit board.

The high beam unit is installed on the lower surface of the assembly wall, and the high beam unit includes a high beam circuit board and at least one high beam LED light source installed on the high beam circuit board.

The light-shielding unit includes an upright section and a horizontal section. The upright section is attached to one end of the assembly wall away from the vertical wall. The horizontal section extends from the upper edge of the upright section toward the vertical wall, and the end edge of the horizontal section is curved.

The optical lampshade is attached to the front end of the reflective lamp holder. Its inner surface has an optical diffusion surface composed of a plurality of optical diffusion regions. The optical lampshade is transparent, so that the outline of the plurality of optical diffusion regions can be displayed on the outer side of the optical lampshade.

As described above, in the retro headlight for vehicles using LED light sources, at least one protrusion is provided on the end face of the assembly wall away from the vertical wall, and at least one hole is provided on the vertical section of the light-shielding unit, the hole being a corresponding insertion of the protrusion, so that the light-shielding unit is positioned on the heat-conducting unit.

To provide a more complete and clear disclosure of the technical content, purpose, and effects achieved by this invention, a detailed explanation is provided below, along with the accompanying drawings and figures:

Please refer to the first figure.

The retro-style headlight for automobiles using LED light source of this invention includes a reflector mount 1, a heat-conducting unit 2, a low beam unit 3, a high beam unit 4, a light-shielding unit 5, and an optical lens 6; wherein:

The reflector base 1 is bowl-shaped, and its inner surface forms a light-concentrating reflective surface 11 so that the light generated by the low beam unit 3 and the high beam unit 4 can be concentrated through the reflection of each light-concentrating reflective area 111 constituting the light-concentrating reflective surface 11. The inner surface of the reflector base 1 is also provided with a recessed mounting groove area 12.

The heat-conducting unit 2 (see Figures 2-4 below) is installed in the mounting groove area 12 of the reflector lamp holder 1. The heat-conducting unit 2 includes a vertical wall 21 corresponding to the mounting groove area 12, and an assembly wall 22 extending away from the mounting groove area 12 on one side surface of the vertical wall 21. The distance between the upper surface 221 and the lower surface 222 of the assembly wall 22 gradually decreases from the end adjacent to the vertical wall 21 to the end away from the vertical wall 21, so that the upper surface 221 gradually slopes downward towards the end away from the vertical wall 21, and the lower surface 222 gradually slopes upward towards the end away from the vertical wall 21.

The low-light unit 3 is installed on the upper surface 221 of the assembly wall 22 of the heat-conducting unit 2. The low-light unit 3 includes a low-light circuit board 31 and at least one low-light LED light source 32 installed on the low-light circuit board 31.

The high beam unit 4 is installed on the lower surface 222 of the assembly wall 22 of the heat-conducting unit 2. The high beam unit 4 includes a high beam circuit board 41 and at least one high beam LED light source 42 installed on the high beam circuit board 41.

The light-shielding unit 5 includes an upright section 51 and a horizontal section 52. The upright section 51 is attached to the assembly wall 22 of the heat-conducting unit 2 and is located at one end away from the vertical wall 21. The horizontal section 52 extends from the upper edge of the upright section 51 toward the vertical wall 21, and the end edge of the horizontal section 52 is curved.

The optical lampshade 6 is attached to the front end of the reflective lamp holder 1, and its inner surface forms an optical diffusion surface 61. The optical diffusion surface 61 includes a plurality of optical diffusion areas 611. The optical lampshade 6 is light-transmitting, so that the grid-like outline of the optical diffusion area can be viewed from the outside of the optical lampshade 6.

During assembly (see Figures 2 to 4), the vertical wall 21 of the heat-conducting unit 2 is embedded into the mounting groove 12 inside the reflector lamp holder 1. A screw (not shown in the figure) passes through the mounting groove 12 on the outside of the reflector lamp holder 1 and locks into the heat-conducting unit 2, thus fixing the heat-conducting unit 2 inside the reflector lamp holder 1. The low beam unit 3 and the high beam unit 4 are respectively placed on the upper surface 221 and lower surface 222 of the assembly wall 22 of the heat-conducting unit 2. Two screws (not shown in the figure) pass through the low beam circuit board 31 and the high beam circuit board 41 respectively and lock into the assembly wall 22 of the heat-conducting unit 2, thus fixing the low beam unit 3... The high beam unit 4 is fixed to the upper surface 221 and lower surface 222 of the assembly wall 22 of the heat conduction unit 2, respectively. The light shielding unit 5 has its vertical section 51 attached to the end of the assembly wall 22 away from the vertical wall 21, and its three screws (not shown in the figure) pass through the vertical section 51 and are locked into the assembly wall 22 to fix the light shielding unit 5 to the heat conduction unit 2. At this time, the arc edge of the horizontal section 52 of the light shielding unit 5 is close to the low beam LED light source 32 to block part of the light from the low beam LED light source 32. The optical lamp cover 6 is combined with the reflector lamp holder 1 with the optical diffusion surface 61 facing the reflector lamp holder 1.

Therefore, when the low beam unit 3 and high beam unit 4 are not activated, viewed from the outside of the optical lamp cover 6, the grid-like outline of each optical diffusion area 611 forming the optical diffusion surface 61 on the inner side of the optical lamp cover 6 can be seen, giving the headlight a retro look. However, when the low beam LED light source 32 is activated, some of the light from the low beam LED light source 32 is blocked by the light-shielding unit 5, and the light is also reflected by the light-focusing reflective area 111 on the light-focusing reflective surface 11 of the reflector base 1. After the light is focused, it is diffused through the optical diffusion area 611 of the optical diffusion surface 61 of the optical lampshade 6 into a low beam pattern that complies with the regulations. When the high beam LED light source 42 is turned on, the light is reflected and focused by the focusing reflection area 111 on the focusing reflection surface 11 of the reflector 1, and then diffused through the optical diffusion area 611 of the optical diffusion surface 61 of the optical lampshade 6 into a high beam pattern that complies with the regulations.

In a preferred embodiment of the present invention (see Figures 1, 2, and 3), the heat-conducting unit 2 has at least one protrusion 23 on the end face of its assembly wall 22 away from the vertical wall 21, and the light-shielding unit 5 has at least one hole 511 on its upright section 51. The hole 511 is inserted into the protrusion 23 to position the light-shielding unit 5 on the heat-conducting unit 2, so that the light-shielding unit 5 and the heat-conducting unit 2 can be locked together with three screws.

The examples given above are only some embodiments of the present invention and are not intended to limit the present invention. Any modifications or alterations made based on the inventive spirit and features of the present invention should also be included within the scope of this patent.

In conclusion, this invention embodiment can indeed achieve the intended use effect, and the specific technical means disclosed therein have not only never been seen in similar products, but have also not been disclosed before the application. It fully complies with the provisions and requirements of the Patent Law. Therefore, I hereby file an application for an invention patent and earnestly request your kind consideration and permission to grant the patent. I would be truly grateful for your assistance.

1: Reflector Base 11: Focusing Reflector Surface 111: Focusing Reflector Area 12: Mounting Slot Area 2: Heat Conduction Unit 21: Vertical Wall 22: Assembly Wall 221: Upper Surface 222: Lower Surface 23: Protrusion 3: Low Beam Unit 31: Low Beam Circuit Board 32: Low Beam LED Light Source 4: High Beam Unit 41: High Beam Circuit Board 42: High Beam LED Light Source 5: Shielding Unit 51: Vertical Section 511: Hole 52: Horizontal Section 6: Optical Lampshade 61: Optical Diffusion Surface 611: Optical Diffusion Area

[Figure 1] Exploded perspective view of the headlamp of the present invention [Figure 2] Assembled perspective view of the headlamp of the present invention [Figure 3] Front view of the headlamp of the present invention (assembled) [Figure 4] Side view of the headlamp of the present invention (assembled) (sectional view)

1: Reflector lamp holder

11: Concentrating reflective surface

111: Focusing Reflection Zone

12: Installation slot area

2: Thermal Conductive Unit

21: Vertical Wall

22: Assembled Wall

221: Upper surface

222: Lower surface

23: Convex body

3: Low beam unit

31: Low-light circuit board

32: Low-light LED light source

4: High beam unit

41: High Beam Circuit Board

42: LED headlights for high beams

5: Light-shielding unit

51: Upright Section

511: Kong

52: Horizontal section

6: Optical lampshade

61: Optical Diffusion Surface

611: Optical diffusion region

Claims (2)

A retro-style automotive headlight using an LED light source includes a reflector base, a heat-conducting unit, a low beam unit, a high beam unit, a light-shielding unit, and an optical lamp cover; wherein: The reflector base is bowl-shaped, with its inner surface forming a light-concentrating reflective surface and having a recessed mounting groove area; The heat-conducting unit is installed within the mounting groove area. The heat-conducting unit includes a vertical wall corresponding to the mounting groove area, and an assembly wall extending away from the mounting groove area on one side surface of the vertical wall. The distance between the upper and lower surfaces of the assembly wall gradually decreases from the end adjacent to the vertical wall to the end away from the vertical wall, making the upper surface downwardly sloping and the lower surface upwardly sloping; The low beam unit is installed on the upper surface of the assembly wall, and includes a low beam circuit board and at least one low beam LED light source mounted on the low beam circuit board; The high beam unit is installed on the lower surface of the assembly wall, and includes a high beam circuit board and at least one high beam LED light source mounted on the high beam circuit board; The light-shielding unit includes a vertical section and a horizontal section. The vertical section is connected to one end of the assembly wall away from the vertical wall, and the horizontal section extends from the upper edge of the vertical section towards the vertical wall, with the end edge of the horizontal section being curved; The optical lampshade is attached to the front end of the reflective lamp holder. Its inner surface has an optical diffusion surface composed of a plurality of optical diffusion regions. The optical lampshade is translucent, allowing the outlines of the plurality of optical diffusion regions to be displayed on its outer side. As described in claim 1, a retro automotive headlight using an LED light source, wherein at least one protrusion is provided on the end face of the assembly wall away from the vertical wall, and at least one hole is provided on the vertical section of the light-shielding unit, the hole being a corresponding insertion of the protrusion, so that the light-shielding unit is positioned on the heat-conducting unit.