Lighting device for vehicle
By designing a connection and position adjustment device for vehicle lighting devices that allows flat rectangular walls and L-shaped attachments to move along the Z, lighting performance.
Patent Information
- Application Number
- CN202410914004.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-07-19
- Filing Date
- 2024-07-09
- Publication Date
- 2025-01-21
AI Technical Summary
When the existing vehicle lighting devices use three orthogonal adjustment support members, it is impossible to accurately position the reflector, resulting in the position of the LED lighting devices being different from the plan, affecting the lighting performance.
A connection and position adjustment device is designed, including a flat rectangular wall and an L-shaped attachment. The design of these attachments allows the flat wall to move along the Z, X and Y directions, thereby achieving precise positioning of the LED light source to the reflector. .
Through the use of this device, the support can be adjusted simply and economically to achieve precise positioning of the LED light source relative to the reflector, thereby improving the performance of the lighting device.
Smart Images
Figure CN119333761A_ABST
Abstract
Description
[0001] CROSS-REFERENCE TO RELATED APPLICATIONS
[0002] This patent application claims the priority of Italian patent application No. 102023000015186 filed on July 19, 2023, the entire disclosure of which is incorporated herein by reference. Technical Field
[0003] The invention relates to a lighting device for a vehicle, in particular a motor vehicle. Background Art
[0004] Vehicle lighting devices are known comprising a reflector; an LED light source configured to emit light radiation towards the reflector and arranged on a support having the function of dissipating heat emitted by the LED light source in use.
[0005] With a device for positioning an LED light source relative to a reflector, a support is connected to a peripheral portion of the reflector. Known positioning devices cannot accurately arrange the LED relative to the reflector, in particular the support cannot be adjusted using three mutually orthogonal directions. For this reason, the position of the LED lighting device relative to the reflector may differ from the planned one, and the performance of the lighting device may be negatively affected. Summary of the invention
[0006] The object of the present invention is to provide a lighting device which enables, in a simple and economical manner, the adjustment of a support using three directions orthogonal to one another.
[0007] The present invention achieves the above-mentioned object because the present invention relates to a lighting device for a vehicle of the type described in claim 1 . BRIEF DESCRIPTION OF THE DRAWINGS
[0008] The present invention will be described with reference to the accompanying drawings, in which:
[0009] Figure 1 A lighting device for a vehicle produced according to the concept of the present invention is shown in a perspective view; and
[0010] Figure 2 Shown in top view Figure 1 Devices in Figure 2 There are also details that are exaggerated in scale (this part is surrounded by a dotted line). DETAILED DESCRIPTION
[0011] refer to Figure 1 , reference numeral 1 identifies a vehicle lighting device, comprising: a reflector 2 (partially shown and known); a known LED light source 3, which is configured to emit light radiation R toward the reflector 2 and is arranged on a support 4, which has the function of dissipating the heat emitted by the LED light source 3 during use.
[0012] As is known to all, the heat sink absorbs the heat energy generated by the LED and transfers it to the surrounding environment, preventing the junction of the LED from reaching too high a temperature. In this way, the heat sink regulates the operating temperature of the LED.
[0013] The lighting device 1 comprises a connection and position adjustment device 5 which is inserted between the peripheral support portion 6 of the reflector 2 and the support 4 and is suitable for enabling the positioning of the LED light source 3 relative to the reflector 2 using a method to be explained below.
[0014] The connection and adjustment device 5 comprises a flat rectangular wall 7 provided with three raised peripheral edges 7a designed to increase the air exchange surface and provided with pairs of through openings 8a, 8b ( Figure 2 ), each opening has an "S" shape in plan view.
[0015] The flat rectangular wall 7 is arranged to be arranged next to a support portion 9 of the portion 6. Conveniently, the support portion 9 is formed by three rectilinear portions (not shown) of the peripheral portion 6, which are coplanar with each other and arranged at the edges of a triangle in plan view.
[0016] The connection and adjustment device 5 further comprises a pair of appendages 10a, 10b extending integrally from the peripheral support portion 6 of the reflector and configured to engage respective holes 8a, 8b allowing the flat wall to move along the first direction Z towards the support portion 9. The appendages 10a, 10b have an L-shaped cross section.
[0017] Two adjacent vertical sides of the L-shaped attachment 10a, 10b have a first dimension d1 and a second dimension d2 transverse to each other in cross section (see Figure 2 (enlarged portion in the figure).
[0018] The first dimension d1 and the second dimension d2 have length values less than the lengths l1, l2 of the respective facing edges of the through openings 8a, 8b, so that the attachments are spaced apart from the edges by gaps ΔX, ΔY, which allow displacement of the flat wall 7 along second X and third Y directions coplanar with each other and perpendicular to the first Z direction when the flat wall 7 rests on the support portion 9 and the attachments 10a, 10b engage the openings 8a, 8b.
[0019] The connection and adjustment device 5 also comprises a screw 12 configured to engage a through hole 13 of the flat wall 7 and a threaded seat (not shown) formed in the peripheral portion 6 .
[0020] In use, to assemble the support 4 on the reflector 2, the operator moves the flat wall 7 along Z, allowing the appendages 10a, 10b to enter the holes 8a, 8b, until the flat wall abuts the support portion 9. The operator then twists the screw 7; thus, the LED light source 3 is stably positioned along Z. Subsequently, taking advantage of the presence of the gaps ΔX, ΔY, the operator can precisely adjust the position of the light source 3 along X and Y. Once a well-defined position is reached, the screw 12 is further tightened in order to reach the final stable position.
Claims
1. A vehicle lighting device (1), comprising: Reflector (2); an LED light source (3) configured to emit light radiation (R) towards the reflector (2) and arranged on a support (4), wherein, in use, the support (4) has a heat dissipation function for heat emitted by the LED light source (3); and connecting and adjusting means (5), which are inserted between the peripheral support portion (6) of the reflector (2) and the support (4) and are suitable for enabling the LED light source (3) to be positioned relative to the reflector (2), It is characterized in that The connecting and regulating means (5) include: a flat wall (7) of the heat dissipation support member, which is provided with a pair of through openings (8a, 8b) and is configured to be arranged close to the support portion (9) of the peripheral support portion (6); a pair of appendages (10a, 10b) extending integrally from a peripheral support portion (6) of the reflector and configured to engage corresponding apertures (8a, 8b) to allow movement of the planar wall along a first direction Z towards the support portion (9); The appendage (10a, 10b) has a cross section with first and second dimensions (d1, d2) transverse to each other and with a length value less than the length (l1, 12) of the respective facing edges (c1, c2) of the through opening (8a, 8b), so that the appendage is spaced apart from the edges by a gap ΔX, ΔY, the gap allowing displacement of the flat wall along second X and third Y directions coplanar with each other and perpendicular to the first Z direction when the flat wall rests on the support portion (9) and the appendage engages the opening.
2. Device according to claim 1, wherein the flat wall (7) is provided with a raised peripheral edge (7r) to increase the air exchange surface.
3. The device according to claim 1, wherein each through opening (8a, 8b) is S-shaped in plan view.
4. A device according to claim 1, wherein the accessory (10a, 10b) has an L-shaped cross-section; two adjacent vertical sides of the accessory with the L-shaped cross-section (10a, 10b) define first and second dimensions d1, d2 transverse to each other in cross section.
5. Device according to claim 1, wherein the support portion (9) is formed by three straight sections of the peripheral support portion (6), the three straight sections being coplanar with each other and arranged corresponding to the edges of a triangle in plan view.
6. Device according to claim 1, wherein the means of connection and adjustment comprise screws configured to engage through holes of the flat wall (7) and threaded seats made in the peripheral support portion (6).