Light-emitting sign of automobile
By setting a guide groove on the installation base of the luminous sign to accommodate the light guide bar, and optimizing the setting of the light guide bar and the light source, the problem of insufficient aesthetics and luminous effects of the luminous sign in the prior art is solved, and uniform light output and high efficiency are achieved Luminous effect.
Patent Information
- Application Number
- CN202411220428.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2024-12-10
AI Technical Summary
The existing luminous signs have shortcomings in aesthetics and luminous effects, especially in night or in environments with weak light, making it difficult to achieve uniform light effects.
A transparent mounting base is adopted, and a guide groove is provided to accommodate annular light guide strips, and is arranged with the light source through the first extension and the second extension to ensure uniform light conduction, forming a light effect of the circumferential side wall, and passing through the bending area and the light teeth. Density optimization improves light intensity.
The uniform light-emitting effect of the luminous sign is achieved, which improves the luminous effect and aesthetics, while reducing the compactness of the structure and wind noise.
Smart Images
Figure CN119099500A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of automobile signboards, in particular to an automobile luminous signboard. Background Art
[0002] Car signs are one of the most important parts of car exteriors, representing the car brand and product image. Compared with traditional car signs, luminous signs can achieve luminous functions at night or in low-light environments, which not only improves the beauty of car exteriors, but also enhances the warning function of driving safety. Therefore, the demand for luminous signs has become an inevitable trend in the development of the automotive industry.
[0003] At present, luminous signs usually use light guide strips to achieve uniform light effect. The selection of light guide strips and the matching structure with the light guide strips in the luminous sign directly affect the overall aesthetics and luminous effect of the luminous sign. Therefore, providing a luminous sign structure with a reasonable structure has become a technical problem in this field. Summary of the invention
[0004] To this end, the present invention provides a car luminous sign, so that the luminous sign has a compact structure and a good luminous effect.
[0005] In view of the above technical problems, the present invention provides the following technical solutions:
[0006] A car luminous sign comprises: a mounting base, a PCB board mounted thereon and a light guide strip; wherein the light guide strip comprises an annular light guide body and a first extension portion and a second extension portion connected to the inner side of the annular light guide body; the mounting base is made of a transparent material and is provided with a guide groove in an area close to the edge of its circumferential side wall, the annular light guide body of the light guide strip is accommodated in the guide groove, the mounting base is provided with a limiting portion in the middle area, and the free ends of the first extension portion and the second extension portion are installed in the middle area of the mounting base and face the same direction under the action of the limiting portion; a light source is provided on the PCB board, and the light source is arranged opposite to the free end faces of the first extension portion and the second extension portion of the light guide strip.
[0007] In some embodiments of the present invention, the annular light guide body is integrally injection molded with the first extension portion and the second extension portion, wherein the free ends of the first extension portion and the second extension portion are oriented in the same direction and are connected as one.
[0008] In some embodiments of the present invention, the annular light-guiding body includes a first light-guiding area, a second light-guiding area, and a third light-guiding area connected in sequence, a transition angle between the first light-guiding area and the second light-guiding area is approximately between 80° and 100°, a transition angle between the second light-guiding area and the third light-guiding area is approximately between 80° and 100°, and a transition angle between the first light-guiding area and the third light-guiding area is approximately between 10° and 40°.
[0009] In some embodiments of the present invention, the first light guiding zone and the second light guiding zone are transitioned through the first bending zone, the second light guiding zone and the third light guiding zone are transitioned through the second bending zone, and the first light guiding zone and the third light guiding zone are transitioned through the third bending zone; wherein the light tooth density of any one of the first bending zone, the second bending zone and the third bending zone is greater than the light tooth density of any one of the first light guiding zone, the second light guiding zone and the third light guiding zone.
[0010] In some embodiments of the present invention, the optical tooth density of the first bending zone is substantially equal to that of the second bending zone, and the optical tooth density of the third bending zone is greater than that of the first bending zone or the second bending zone.
[0011] In some embodiments of the present invention, the first extension portion and the second extension portion are respectively connected to the first connection end and the second connection end of the third light guide area, and the first extension portion, the second extension portion and the area of the third light guide area located between the first connection end and the second connection end form a roughly isosceles triangle structure.
[0012] In some implementation modes of the present invention, the light tooth density of the area of the third light guiding zone between the first connection end and the second connection end is greater than the light tooth density of other areas of the third light guiding zone.
[0013] In some embodiments of the present invention, a front cover assembly is further included which is covered on the mounting base. The front cover assembly includes a front cover body and a transparent insert. The front cover body has a hollow area in the middle, and the transparent insert is embedded in at least a portion of the hollow area.
[0014] In some embodiments of the present invention, the mounting base is provided with a supporting area opposite to the transparent insert, and a color film layer is provided on the surface of the supporting area. When the front cover assembly is installed on the mounting base, the transparent insert abuts against the upper surface of the supporting area of the mounting base.
[0015] In some embodiments of the present invention, a connecting portion and a positioning portion are provided on a side of the mounting base away from the front cover assembly, the connecting portion includes a plug-in sleeve and an electrical connecting portion located in the plug-in sleeve, and the electrical connecting portion is electrically connected to the PCB board.
[0016] The technical solution of the present invention has the following technical effects compared with the prior art:
[0017] In the automobile luminous sign provided by the present invention, by arranging a guide groove for accommodating a light guide strip in the transparent circumferential side wall edge region of the mounting base, and accommodating the annular light guide body of the light guide strip in the guide groove, the light transmitted along the light guide strip can be more evenly transmitted to the outside from the circumferential side wall of the mounting base, forming the effect of emitting light along the entire circumferential side wall of the luminous sign, and the luminous sign emits light evenly and has a good luminous effect. At the same time, by arranging the free end faces of the first extension part and the second extension part on the light guide strip relative to the light source, the light can enter the annular light guide body along the first extension part and the second extension part, respectively, thereby ensuring the light intensity of the light guide strip and further improving the light emitting effect of the luminous sign. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, which will help to understand the objects and advantages of the present invention, wherein:
[0019] Figure 1 An exploded view of a specific implementation of the automobile luminous sign provided by the present invention;
[0020] Figure 2 A schematic diagram of the structure of the automobile luminous sign provided by the present invention when the front cover assembly is not assembled;
[0021] Figure 3 This is a schematic diagram of the structure of the mounting base in the automobile luminous sign provided by the present invention;
[0022] Figure 4 Another structural schematic diagram of the mounting base in the automobile luminous sign provided by the present invention;
[0023] Figure 5 This is a schematic structural diagram of the light guide strip in the automotive luminous sign provided by the present invention. DETAILED DESCRIPTION
[0024] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0027] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0028] like Figure 1-Figure 5 The figure shows a specific embodiment of the automobile luminous sign provided by the present invention, which includes a mounting base 10 and a PCB board 20 and a light guide strip 30 mounted thereon; wherein the light guide strip 30 includes an annular light guide body 31 and a first extension portion 32 and a second extension portion 33 connected to the inner side of the annular light guide body 31; the mounting transparent base 10 is provided with a guide groove 10a in an area close to the edge of its circumferential side wall, and the annular light guide body 31 of the light guide strip 30 is accommodated in the guide groove 10a, and the mounting base 10 is provided with a limiting portion in the middle area, and the free ends of the first extension portion 32 and the second extension portion 33 are installed in the middle area of the mounting base 10 under the action of the limiting portion and face the same direction; the PCB board 20 is provided with a light source 21, and the light source 21 is arranged opposite to the free end surfaces of the first extension portion 32 and the second extension portion 33 of the light guide strip 30.
[0029] In the above-mentioned automobile luminous sign, by setting a guide groove 10a for accommodating the light guide strip 30 in the edge area of the circumferential side wall of the mounting base 10, and the light guide strip 30 is provided with an annular light guide body 31, and the annular light guide body 31 is accommodated in the guide groove 10a, the light can be more evenly transmitted to the outside along the transparent circumferential side wall of the mounting base 10, forming the effect of emitting light along the circumferential side wall of the luminous sign, and the luminous sign emits light evenly and has a good luminous effect. At the same time, by setting the free end faces of the first extension part 32 and the second extension part 33 on the light guide strip 30 relative to the light source 21, the light can enter the annular light guide body 31 along the first extension part 32 and the second extension part 33 respectively, the light guide intensity is guaranteed, and the light emission effect of the luminous sign is further improved.
[0030] Specifically, in an optional embodiment, the mounting base 10 is made of a material with good light transmittance, such as optical PMMA, optical PC, etc. The light guide bar 30 is made of a light guide material with good optical and mechanical properties, such as optical PMMA (polymethyl methacrylate), and is made by mold injection molding or injection molding technology to ensure that the optical and mechanical properties of the light guide bar 30 meet the requirements. More specifically, the light guide bar 30 is integrally formed into a strip body with a rectangular cross-section. The cross-section of the light guide bar 30 is a rectangle with a length between 1mm-3mm and a width between 0.5mm-2mm. Compared with the traditional light guide bar 30 with a cross-sectional size usually greater than 6mm*6mm, the light guide bar 30 of the present invention is smaller in size and has stronger spatial adaptability. At the same time, the use of ultra-fine light guide strips 30 can also make the structure of the luminous sign more compact and the appearance more beautiful, and can also better reduce wind noise during vehicle operation.
[0031] Among them, Figure 3 , Figure 4 As shown, the limiting portion is a plurality of first limiting protrusions 11 formed on the inner side surface of the middle area of the mounting base 10, and the structure of the first limiting protrusion 11 matches the shape of the first extension portion 32 and the second extension portion 33. For example, when the first extension portion 32 and the second extension portion 33 are formed as a strip-shaped body with a bending structure, two first limiting protrusions 11 are provided, and the two first limiting protrusions 11 are formed as substantially concentric arc-shaped protrusion structures, the first extension portion 32 is limited between the two first limiting protrusions 11, and the second extension portion 33 is limited to the outside of the first limiting protrusion 11 on the outside, so as to ensure that the first extension portion 32 and the second extension portion 33 maintain their bending directions.
[0032] like Figure 5As shown, the annular light-guiding body 31 is integrally injection-molded with the first extension portion 32 and the second extension portion 33, and the free ends of the first extension portion 32 and the second extension portion 33 are oriented in the same direction and connected as a whole to form a flat light incident surface 30a so as to be parallel to the light source 21, so that the light of the light source 21 enters in a direction perpendicular to its surface, the light loss is small, and the light guiding effect of the light guide strip 30 is better.
[0033] Specifically, in an optional implementation manner, Figure 3 , Figure 4 As shown, the mounting base 10 is provided with a plurality of second limiting protrusions 12, the PCB board 20 is plugged into the mounting base 10 under the limiting action of the second limiting protrusions 12, and the light source 21 is an LED light source. Figure 2 As shown, it is arranged on the side of the PCB board 20 perpendicular to the mounting base 10, and the side is arranged parallel to the light incident surface 30a of the free ends of the first extension part 32 and the second extension part 33 in the light guide bar 30 to minimize light loss.
[0034] Specifically, Figure 5 As shown, the first extension portion 32 and the second extension portion 33 are respectively connected to the first connection end and the second connection end of the annular light guide body 31 , so that light enters the annular light guide body 31 along two positions, so that the light is evenly transmitted. Among them, in the combining area between the first extension part 32 and the annular light guide body 31 (that is, the area where the first connecting end is located), the inner combining area between the first extension part 32 and the annular light guide body 31 is a smooth transition area, and the outer combining area between the first extension part 32 and the annular light guide body 31 is provided with a first protrusion 30b; in the combining area between the second extension part 33 and the annular light guide body 31 (that is, the area where the second connecting end is located), the inner combining area between the second extension part 33 and the annular light guide body 31 is a smooth transition area, and the outer combining area between the first extension part 32 and the annular light guide body 31 is provided with a second protrusion 30c, and the first protrusion 30b and the second protrusion 30c are connected by a lap transition strip 30d, wherein the extension direction of the lap transition strip 30d is basically consistent with the side of the annular light guide body 31 where it is located. The first extension portion 32 , the second extension portion 33 and the overlapping transition strip 30 d form a substantially isosceles triangle structure, which allows light to be more evenly incident from the first connection end and the second connection end to other areas of the annular light guide body 31 .
[0035] Specifically, Figure 5As shown, the annular light-guiding body 31 includes a first light-guiding area 311, a second light-guiding area 312 and a third light-guiding area 313 which are connected in sequence, a transition angle α between the first light-guiding area 311 and the second light-guiding area 312 is approximately between 80° and 100°, a transition angle β between the second light-guiding area 312 and the third light-guiding area 313 is approximately between 80° and 100°, and a transition angle γ between the first light-guiding area 311 and the third light-guiding area 313 is approximately between 10° and 40°.
[0036] The first light guiding area 311 and the second light guiding area 312 are transitioned through the first bending area 31a, the second light guiding area 312 and the third light guiding area 313 are transitioned through the second bending area 31b, and the first light guiding area 311 and the third light guiding area 313 are transitioned through the third bending area 31c; wherein the first bending area 31a, the second bending area 31b and the third bending area 31c are arc transitions respectively. The light tooth density of any one of the three is greater than the light tooth density of any one of the first light guide area 311, the second light guide area 312 and the third light guide area 313, that is, the light tooth density of the first bending area 31a or the second bending area 31b or the third bending area 31c is greater than the light tooth density of the first light guide area 311, the light tooth density of the first bending area 31a or the second bending area 31b or the third bending area 31c is greater than the light tooth density of the second light guide area 312, and the light tooth density of the first bending area 31a or the second bending area 31b or the third bending area 31c is also greater than the light tooth density of the third light guide area 313. Since light will have a great light loss when propagating in the bending area, increasing the light tooth density of the bending area can improve the light uniformity of the entire light-emitting sign.
[0037] More specifically, the light tooth density of the first bending zone 31a is approximately equal to that of the second bending zone 31b, and the light tooth density of the third bending zone 31c is greater than that of the first bending zone 31a or the second bending zone 31b. Since the bending angle of the third bending zone 31c is small and the light loss is large, increasing the light tooth density of the third bending zone 31c can further improve the luminous uniformity of the luminous sign.
[0038] Specifically, the light tooth density of the area between the first connection end and the second connection end of the third bending zone 31c (that is, the overlapping transition strip 30d) is greater than the light tooth density of other areas of the annular light guide body 31. Since the overlapping transition strip 30d forms a smaller acute angle transition with the first extension portion 32 and the second extension portion 33, the light loss is relatively large. Therefore, increasing the light tooth density of the overlapping transition strip 30d can make the light intensity basically consistent with the light intensity of other areas of the annular light guide body 31, thereby maintaining the uniformity of light output.
[0039] Specifically, the automobile luminous sign also includes a front cover component covered on the mounting base 10, such as Figure 1 As shown, the front cover assembly includes a front cover body 40 and a transparent insert 50, wherein the front cover body 40 has a hollow area 40a in the middle, and the transparent insert 50 is embedded in at least part of the hollow area 40a. The front cover body 40 is a non-transparent part, which is set on the mounting base 10 to cover the PCB board 20, the guide groove 10a and other areas. The front cover body 40 is made of ABS, PP, PC / ABS and other materials, and a metal coating is provided on its surface. The coating metal includes chromium, nickel, aluminum and the like, which enhances the metal texture of the front cover. The front cover assembly is connected to the base by ultrasonic welding, which enhances the sealing of the entire luminous sign and prevents moisture and dust from entering the luminous sign to cause damage to the charged devices.
[0040] Specifically, the transparent insert 50 is embedded on part of the inner side wall of the hollow area 40a of the front cover body 40. The transparent insert 50 is made of materials such as PMMA, PC, PS, PVC, etc., and has good light transmittance. When the front cover assembly is covered on the mounting base 10, the part where the transparent insert 50 is located can also achieve light conduction, thereby improving the luminous effect of the luminous sign. The surface of the transparent insert 50 is hot-stamped with a protruding structure, which not only improves the overall visual sense but also improves the scratch resistance of the luminous sign.
[0041] Specifically, Figure 3 , Figure 4 As shown, the mounting base 10 is provided with a supporting area 13 opposite to the transparent insert 50, and a colored film layer is provided on the surface of the supporting area 13. When the front cover assembly is installed on the mounting base 10, the transparent insert 50 abuts against the upper surface of the supporting area 13 of the mounting base 10, so that the luminous sign presents the color of the colored film layer in the area where the transparent insert 50 is located, for example, the colored film layer is red, blue or white, etc., wherein, since the mounting base 10 is made of transparent material, part of the light transmitted along the light guide strip 30 can be transmitted along the supporting area 13 to the transparent insert 50, thereby forming a luminous effect of the transparent insert 50 part.
[0042] Specifically, Figure 3 As shown, the side of the mounting base 10 away from the front cover assembly is provided with a connecting portion 14 and a positioning portion 15 for fixing the mounting base 10 to other parts of the automobile (such as a bumper), wherein the connecting portion 14 has both mechanical and electrical connection functions, such as Figure 3 , Figure 4As shown, the connection part 14 includes a plug-in sleeve 141 for plugging into the peripheral parts of the automobile and an electrical connection part 142 located in the plug-in sleeve 141. One end of the electrical connection part 142 is electrically connected to the PCB board 20, and the other end is electrically connected to the electric control component inside the automobile. The positioning part 15 is formed as a pin shaft, which cooperates with the pin hole on other parts of the automobile to realize the installation and positioning of the luminous sign.
[0043] In order to improve the installation stability of the automobile luminous sign, the back side of the installation base 10 is bonded to other automobile parts by means of a 3M adhesive tape 60 .
[0044] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.
Claims
1. A car luminous sign, It is characterized in that include: An installation base and a PCB board and a light guide strip installed thereon; Among them, the light guide strip includes an annular light guide body and a first extension portion and a second extension portion connected to the inner side of the annular light guide body; the mounting base is made of a transparent material and is provided with a guide groove in an area close to the edge of its circumferential side wall, the annular light guide body of the light guide strip is accommodated in the guide groove, the mounting base is provided with a limiting portion in the middle area, and the free ends of the first extension portion and the second extension portion are installed in the middle area of the mounting base under the action of the limiting portion and are in the same direction; a light source is provided on the PCB board, and the light source is arranged opposite to the free end faces of the first extension portion and the second extension portion of the light guide strip.
2. A car luminous sign according to claim 1, It is characterized in that The annular light guide body is integrally injection-molded with the first extension portion and the second extension portion, wherein the free ends of the first extension portion and the second extension portion face the same direction and are connected as one.
3. A car luminous sign according to claim 2, It is characterized in that The annular light-guiding body includes a first light-guiding area, a second light-guiding area and a third light-guiding area connected in sequence, a transition angle between the first light-guiding area and the second light-guiding area is approximately between 80°-100°, a transition angle between the second light-guiding area and the third light-guiding area is approximately between 80°-100°, and a transition angle between the first light-guiding area and the third light-guiding area is approximately between 10°-40°.
4. The automobile luminous sign according to claim 3, It is characterized in that The first light guide area and the second light guide area are transitioned through the first bending area, the second light guide area and the third light guide area are transitioned through the second bending area, and the first light guide area and the third light guide area are transitioned through the third bending area; wherein the light tooth density at any one of the first bending area, the second bending area and the third bending area is greater than the light tooth density at any one of the first light guide area, the second light guide area and the third light guide area.
5. The automobile luminous sign according to claim 4, It is characterized in that The optical tooth density of the first bending zone is substantially equal to that of the second bending zone, and the optical tooth density of the third bending zone is greater than that of the first bending zone or the second bending zone.
6. The automotive luminous sign according to claim 5, It is characterized in that The first extension portion and the second extension portion are respectively connected to the first connection end and the second connection end of the third light guide area. The first extension portion, the second extension portion and the area of the third light guide area between the first connection end and the second connection end form a substantially isosceles triangle structure.
7. The automobile luminous sign according to claim 6, It is characterized in that The light tooth density of the area of the third light guiding zone between the first connection end and the second connection end is greater than the light tooth density of other areas of the third light guiding zone.
8. The automobile luminous sign according to claim 1, It is characterized in that A front cover assembly is arranged on the mounting base, the front cover assembly comprises a front cover body and a transparent insert, the middle part of the front cover body has a hollow area, and the transparent insert is embedded in at least a part of the hollow area.
9. The automobile luminous sign according to claim 8, It is characterized in that The mounting base is provided with a supporting area opposite to the transparent insert, and a color film layer is provided on the surface of the supporting area. When the front cover assembly is mounted on the mounting base, the transparent insert abuts against the upper surface of the supporting area of the mounting base.
10. The automobile luminous sign according to claim 1, It is characterized in that A connecting portion and a positioning portion are provided on a side of the mounting base away from the front cover assembly. The connecting portion includes a plug-in sleeve and an electrical connecting portion located in the plug-in sleeve. The electrical connecting portion is electrically connected to the PCB board.