Signal illumination device for a vehicle, in particular motor vehicle
By covering the opaque coating and metallized materials on a single piece of transparent plastic, combined with central lighting devices and light guide technology, the complex and cost-effective production of existing sign lighting devices is solved, and simplified production and reduced costs are achieved. Effect.
Patent Information
- Application Number
- CN202410823196.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-06-28
- Filing Date
- 2024-06-25
- Publication Date
- 2024-12-31
AI Technical Summary
Existing sign lighting devices for vehicles are complex and costly production processes, and assembly requires multiple components and is expensive.
The screen is made of a single piece of transparent plastic and covered with opaque coatings and metallized materials. The production and assembly process is simplified by a central lighting device using light guides and light-coupled elements.
The manufacturing and assembly of the logo display device is achieved, the cost is reduced, and the logo is clearly visible through uniform light illumination.
Smart Images
Figure CN119218097A_ABST
Abstract
Description
[0001] CROSS-REFERENCE TO RELATED APPLICATIONS
[0002] This patent application claims the priority of Italian patent application No. 102023000013425 filed on June 28, 2023, the entire disclosure of which is incorporated herein by reference. Technical Field
[0003] The present invention relates to a sign lighting device for a vehicle (especially a motor vehicle). Background Art
[0004] Patent DE102008044854A1 describes a logo lighting device for vehicles, in which the housing is made of transparent polycarbonate. At the point where the light must appear at the logo, a partially transparent metal layer of several tens of nanometers (e.g. silver, aluminum or the like) is applied to the outside. The remaining area of the housing is covered with chrome plating so that the light cannot escape. The lighting device (e.g., consisting of a surface-mount light-emitting diode (SMD LED) on a printed circuit) is installed in the inner cavity of the housing and is protected from environmental influences by sealing.
[0005] The device shown in the above patent is formed of many different parts which must be assembled together; therefore, its production process is complicated and expensive. Summary of the invention
[0006] An object of the present invention is to provide a logo display device for a vehicle, the manufacture and assembly of which is extremely simple and the cost is very low.
[0007] The present invention achieves the above-mentioned object because it relates to a logo display 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 logo display device for a vehicle produced according to the principle of the present invention is shown in a perspective exploded view;
[0010] Figure 2 A front view shows the front of the vehicle. Figure 1 Devices in
[0011] Figure 3 The previous view shows Figure 1 a component of a device in; and
[0012] Figure 4 Shows Figure 3 The working principle of the components shown. DETAILED DESCRIPTION
[0013] refer to Figure 1 , numeral 1 indicates a sign lighting device for a vehicle, in particular a motor vehicle, comprising a light-proof front screen portion 2 provided with an integral window 3 through which light can pass, and having an edge for reproducing a sign, as schematically shown in the figure, with the letter R arranged in a circle. The sign may consist of several different windows separated from each other by light-proof portions.
[0014] The screen 2 may be printed in a single piece of clear plastic covered with an opaque coating that does not deposit on the logo producing window 3. The window may not be completely transparent and be made of plastic with embossing, plastic covered with metallization that allows light to pass through, or opalescent material.
[0015] The device 1 further comprises a central lighting device 4, which is designed to illuminate the integrated window 3 with a spatially uniform light intensity. The central lighting device 4 comprises a first light guide 5, which in an embodiment extends along a first straight line direction (D1, see Figure 3 ) extends, and a light source 6 (usually an LED) is provided at one end thereof, which provides light at the input of the light guide ( Figure 1 The light guide 5 is designed to output light extending radially along a second direction (D2) transverse to the first direction D1. The light guide 5 may also be different from the light guide shown in the figure, for example, the bend has more bends, or includes straight parts and curved parts.
[0016] The central lighting device 4 comprises a second light guide 7 having a reduced dimension (thickness along Z) compared to the dimensions X, Y defining its extension, typically a light guide shaped like a flat wall. In this example, the light guide has straight sides 8 (see Figure 3 ), the collimator is arranged to face the first straight light guide 5 and is designed to receive the output light extending along D2 at the first light guide 5.
[0017] The second light guide 7, shaped like a flat wall, is configured to output a light radiation R extending parallel to the main direction D3 (e.g. transversely to the plane of the flat wall) and directed towards the screen 2 and thus towards the integrated window 3 to fully illuminate it. Basically, the flat wall 7 is illuminated along its entire extension in X and Y with a spatially uniform light intensity.
[0018] In use, the device 1 is mounted in a vehicle so that the light radiation output along D3 at the window 3 is also parallel to the axis of the vehicle along which the logo lighting device is mounted (see Figure 2 ). In this way, an observer located in front of the vehicle sees the window 3 of the device 1 as fully illuminated.
[0019] The back cover 9, which is configured to house the central lighting device 4, can be connected to the front of the screen 2 using known fasteners, such as screws (not shown).
[0020] The cover 9 is not an essential element of the device and may not be included.
[0021] Conveniently, the first light guide 5 and the second light guide 7 shaped like a flat wall are made by moulding a single piece of plastic. In this way, production costs are reduced and assembly is simplified.
[0022] Conveniently, the rear cover 9 (if included) is defined by a flat reflective wall 10 facing the central lighting device 4. The wall 10 may be covered by a reflective surface (eg metal) or, more simply, the cover 9 may be made of a light coloured (eg white) plastic.
[0023] like Figure 4 As shown, the flat wall forming the central lighting device 4 is defined by two opposite faces 7-a, 7-b, at least one of which (in the example 7-b) is provided with light outcoupling elements allowing light radiations to develop parallel to each other.
[0024] Conveniently, the light outcoupling element comprises a prism, embossing, coating or metallization.
Claims
1. A sign lighting device (1) for a vehicle, in particular a motor vehicle, characterized in that: include: - a light-proof front screen part (2) provided with at least one integrated window (3) through which light can pass, and which has a border in which the logo is reproduced; - A central lighting device (4) suitable for illuminating the integrated window (3); the central lighting device (4) comprises a first light guide (5), the first light guide (5) extends at least a section along a first direction (D1) and a light source (6) is arranged at one end thereof, the first light guide (5) is suitable for outputting light extending along a second direction (D2), the second direction (D2) being transverse to the first direction (D1); the central lighting device (4) comprises a second light guide, the second light guide has a dimension (Z) reduced relative to the dimensions X and Y defining its extension, and has at least one side (8), the at least one side (8) is arranged to face the first light guide (5) and is configured to receive at least part of the output light along the second direction (D2) at the first light guide (5); the second light guide (7) is configured to output light radiation extending parallel to a third main direction (D3) and pointing to the integrated window (3).
2. The device according to claim 1, wherein: The first light guide (5) and the second light guide (7) are made from a single piece of plastic material.
3. The device according to claim 1 or 2, wherein: A rear cover (9) is provided, which is defined by a flat reflective wall (10) facing the central lighting device.
4. The device according to claim 1, wherein: The second light guide (7) is defined by two opposite faces (7-a, 7-b), at least one of the two opposite faces (7-b) being provided with light outcoupling elements allowing the generation of light radiations running parallel to each other.
5. The device of claim 4, wherein the light outcoupling element comprises a prism, embossing, coating, metallization.
6. The device according to claim 1, wherein: The first light guide (5) is linear.
7. The device according to claim 1, wherein: The shape of the second light guide (7) is similar to a flat wall.
8. The device according to claim 7, wherein: The light guide (7) is shaped like a flat wall and is configured to output light radiation R extending transversely to the plane of the flat wall.