Grille luminous lamp and automobile

Abstract

The present invention discloses a grille-lighting lamp and a car, the lamp comprising a main light guide and a rear wall inner light distribution mirror, one end of the main light guide is provided with a corresponding light source, and the other end is connected to one or more light guide branches, the light guide branches are placed inside a cover body around the vehicle body grille; the rear wall inner light distribution mirror comprises a light incident surface, a light exit surface, a first total reflection surface and a second total reflection surface, the first total reflection surface forms a positive 45-degree angle with the incident light entering through the light incident surface, and the second total reflection surface forms a negative 45-degree angle with the incident light entering through the light incident surface; the light guide branch is located at the outer end of the light incident surface and directly faces the light incident surface, after the incident light from the light guide branch is incident through the light incident surface, the incident light is reflected by the first total reflection surface to the second total reflection surface, and then reflected by the second total reflection surface to exit the light exit surface, and the light exit surface is located inside the grid hole position of the vehicle body grille.

Description

Technical Field

[0001] The present invention relates to a lamp and a car thereof, in particular to a grille luminous lamp and a car using the lamp. Background Art

[0002] Currently, more and more automotive lamps are using artistic design methods to meet styling needs, special lighting requirements, and the need for more artistic styling. A new trend in styling is how to achieve artistic styling within traditional automotive lamps, thereby maximizing the artistic sense of the styling. The realization of this artistic styling relies heavily on the support of lighting technology.

[0003] For a car body, changes to the front appearance often have a significant impact on consumer choices, and the front bumper and grille area occupy a significant portion of the front body's exterior area. According to traditional car body design, the front grille's function not only simply takes into account the aesthetics of the exterior, but also technically provides air guidance, making the cooling water tank design more efficient. Some grilles incorporate active air intake functions, electronically controlling the size of the grille air holes. Specifically, when the car is cooling, the air intake function is closed, allowing the product to reach operating temperature more quickly. At this time, the air intake grille is opened to enable stable operation. This traditional application function only meets the requirements of the water tank operating temperature. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a grille luminous lamp that can make the appearance of the car body more rich and diversified in combination with the structure of the grille itself on the car body.

[0005] The technical problem to be solved can be implemented through the following technical solutions.

[0006] A grille luminous lamp, characterized by comprising:

[0007] a main light guide, one end of which is provided with a corresponding light source, and the other end of which is connected to one or more light guide branches, wherein the light guide branches are placed inside the cover around the vehicle body grille; and

[0008] A rear wall inner light distribution mirror, the rear wall inner light distribution mirror having a light incident surface, a light exit surface, a first total reflection surface and a second total reflection surface, the first total reflection surface and the incident light entering through the light incident surface form a positive 45-degree angle, and the second total reflection surface and the incident light entering through the light incident surface form a negative 45-degree angle; the light guide branch is located at the outer end of the light incident surface and directly opposite the light incident surface, after the incident light from the light guide branch is incident through the light incident surface, the incident light is reflected by the first total reflection surface to the second total reflection surface, and then reflected by the second total reflection surface to exit the light exit surface, and the light exit surface is located on the inner side of the grille hole position of the vehicle body grille.

[0009] As a further improvement of the present technical solution, the other end of the main light guide is connected to a first light guide branch and a second light guide branch, the first light guide branch and the second light guide branch have the same connection bifurcation point, and a triangular prism-shaped hollow cavity is provided at the connection bifurcation point, and the corresponding facets of the triangular prism-shaped hollow cavity form a total reflection surface that transmits the light beam of the main light guide to the first light guide branch or the second light guide branch.

[0010] As a preferred embodiment of the present invention, the cross-sectional shape of the triangular prism-shaped hollow cavity is an isosceles right triangle, and the right angle thereof faces the main light guide.

[0011] As a further improvement of the present technical solution, the other ends of the first light guide branch and the second light guide branch separated from the connection bifurcation point are connected to form a closed loop structure as a whole.

[0012] Another technical problem to be solved by the present invention is to provide a car having the above-mentioned grille light-emitting lamp at the front of the car body.

[0013] The grille-illuminated lamp and vehicle using the above technical solution can significantly enhance the demand for vehicle personalization by providing a lamp for the front bumper and grille area, while maintaining or building upon the vehicle's grille structure. This allows the vehicle to be recognized as a family at night solely through its personalized, family-like front face design and the optical effects it creates, achieving a perfect combination of lamp and grille. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view of an embodiment of a grid light emitting lamp of the present invention;

[0015] Figure 2 for Figure 1 The cross-sectional structure at AA in FIG.

[0016] Figure 3 for Figure 1The cross-sectional structure at BB in FIG.

[0017] Figure 4 for Figure 3 Schematic diagram of the partially enlarged structure of the mesotope;

[0018] Figure 5 for Figure 4 A schematic diagram of the structure with some parts removed; it illustrates the local structure of the light source incident area;

[0019] Figure 6 for Figure 1 Schematic diagram of the structure after removing the external mask and thick-walled inner light distribution mirror;

[0020] Figure 7 for Figure 6 Schematic diagram of the partially enlarged structure of the middle mesotope; DETAILED DESCRIPTION

[0021] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] like Figures 1 to 7 The grid luminous lamp shown is mainly used for lighting the grille at the front bumper of a car body.

[0023] In the figure, 1 is the external mask, 2 is the luminous thick-walled inner light distribution mirror, 3 is the protective cover, 4 is the lamp body, 5 is the luminous light guide, 6 is the circuit board heat sink assembly, 7 is the fixed light guide bracket, and 8 is the LED light source.

[0024] The light-emitting principle is as follows: the LED light source 8 is fixed on the circuit board heat sink assembly 6, which is fixed to the lamp body 4 by a screw structure. The light guide part is a grid corresponding to two light guides, which are independent (referring to the two parts that are symmetrical on the left and right in the figure). They are fixed together by a fixed light guide bracket 7. The fixed light guide bracket 7 and the circuit board heat sink assembly 6 are fixed by a certain positioning structure, which can be a screw, a positioning pin or a buckle. At this time, the assembly of the light source part has been fixed.

[0025] In order to achieve a uniform lighting effect, the light source must be placed in the middle of the grid, and the light guide uses a lighting optical method, which can be seen in Figure 6 and Figure 7 As shown, and referring to other views, the light source transmits light to the light guide bifurcated end ( Figure 7 The middle upper and lower segmented areas), Figure 7The light guide bifurcation region in the figure contains a triangular structure 53 (an isosceles right triangle in the figure, with its right angle facing the short light guide 50). This structure is a triangular prism-like hollow cavity. Through its corresponding facets, light from the luminous light guide 5 (specifically, the short light guide 50) is reflected in this triangular region by total internal reflection, thereby splitting the single light beam emitted by the light guide into two beams, one above and one below. These beams are then transmitted through the upper and lower light guides 51 and 52, forming a ring-shaped luminous structure. In the two symmetrical grille-illuminated lamp structures shown in the figure, the left and right light guides branch out (referring to the two short light guides extending to the sides). The triangle at the root of the light guide is a key optical structure that guides light from the main light guide region to the light guide branch region.

[0026] However, on the other hand, since the light guide emits light, there will be a lighting effect of the light guide teeth, which is not the original intention of the design. The optical effect required by this technical solution does not want the visible effect of the light guide teeth to appear. Therefore, a thick-walled inner light distribution mirror part is added in front of the light guide, that is, the structure represented by number 2 in the figure, referring to Figure 2 As shown, the luminous thick-walled inner light distribution mirror 2 has an optical incident surface 21, a luminous light guide 5 ( Figure 2 The light guide 5 (which actually refers to the branched light pipe 51) is located in front of the optical incident surface 21 and is hidden behind the outer cover 1. Light from the light guide 5 enters the thick-walled inner light distribution mirror 2 through the optical incident surface 21, is reflected by the total reflection surface 22, and then reaches another total reflection surface 23. After being reflected by the total reflection surface 23, it is emitted from the optical exit surface 24 and passes through the grid holes 9 to reach the outside of the vehicle body. The entire light path is shown in FIG. Figure 2 As shown by the arrow C in FIG.

[0027] That is, when light passes through the thick-walled inner light distribution mirror 2, it uses the principle of double total reflection to transmit light. Figure 2 On the left side of the center, there are two total reflection surfaces 22 and 23 that form a 45-degree angle with the horizontal plane. When the light guide reflects light onto the first total reflection surface 22, the light travels from right to left. After passing through the first total reflection surface 22, the light is reflected onto the second total reflection surface 23. At this time, the light travels from top to bottom. The light then passes through the second total reflection surface 23 and is reflected onto the thick-walled inner luminous area visible from the outside, that is, the light is transmitted from left to right and is finally captured by the outside air.

[0028] The outer mask is laser welded to the thick-walled inner lens, while the protective cover is magnetically attached to the lamp body. Numbers 11 and 12 in the figure indicate two different welding areas. Numbers 13 and 14 in the figure indicate two different adhesive application areas.

[0029] Figure 5 The direction of light travel indicated by arrow d in Figure 2The expression in is similar.

[0030] Compared with the old implementation method, the grille luminous lamp and the car using the above technical solution make the styling more flexible and artistic in the overall vehicle appearance layout. When the product is not lit, the product maintains the original effect and function. When the product is lit, it can highlight its family characteristics, further improve the vehicle recognition, and meet the personalized needs of customers.

[0031] Compared with the existing technology, this optical and structural design solution fully solves the design problem of light guide uniformity, while fully considering the cost of the product and the problem of maintaining the original structure.

Claims

1. A grid luminous lamp, characterized in that: include: a main light guide, one end of which is provided with a corresponding light source, and the other end of which is connected to one or more light guide branches, wherein the light guide branches are placed inside the cover around the vehicle body grille; and A rear wall inner light distribution mirror, the rear wall inner light distribution mirror having a light incident surface, a light exit surface, a first total reflection surface and a second total reflection surface, the first total reflection surface and the incident light entering through the light incident surface form a positive 45-degree angle, and the second total reflection surface and the incident light entering through the light incident surface form a negative 45-degree angle; the light guide branch is located at the outer end of the light incident surface and directly opposite the light incident surface, after the incident light from the light guide branch is incident through the light incident surface, the incident light is reflected by the first total reflection surface to the second total reflection surface, and then reflected by the second total reflection surface to exit the light exit surface, and the light exit surface is located on the inner side of the grille hole position of the vehicle body grille.

2. The grid light emitting lamp according to claim 1, characterized in that: The other end of the main light guide is connected to a first light guide branch and a second light guide branch, the first light guide branch and the second light guide branch have the same connection bifurcation point, and a triangular prism-shaped hollow cavity is provided at the connection bifurcation point, and the corresponding facets of the triangular prism-shaped hollow cavity form a total reflection surface that transmits the light beam of the main light guide to the first light guide branch or the second light guide branch.

3. The grid light emitting lamp according to claim 2, characterized in that: The cross-sectional shape of the triangular prism-shaped hollow cavity is an isosceles right triangle, and the right angle thereof faces the main light guide.

4. The grid light emitting lamp according to claim 2, characterized in that: The other ends of the first light guide branch and the second light guide branch separated from the connection bifurcation point are connected to form a closed loop structure as a whole.

5. A car, characterized in that: The front part of the vehicle body adopts the grille light-emitting lamp described in any one of claims 1 to 4.

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