Tail lamp light blocking structure

Abstract

A tail lamp light blocking structure comprises a light blocking piece and a decorating part, the decorating part is provided with a light blocking plate, a shell plate and an installation part, the shell plate is provided with at least one lamp hole, and the installation part is provided with an installation hole or an installation buckle so that the decorating part and other parts can be installed together. The width of the clamping groove is larger than the thickness of the circuit board, so that the light blocking piece can be clamped with the circuit board to form an integrated structure, and when the decorating part and the circuit board are assembled together, the light blocking piece and the light blocking plate are jointed to form a complete shading structure; the shading structure divides a lamp hole in the shell plate into at least two lamp holes, namely a first lamp hole and a second lamp hole. The light blocking piece and the decorating part are separately formed in an injection molding mode through a split structure, the injection molding process cannot be affected due to the structure, the light blocking piece can be set with the corresponding thickness according to needs and is not affected by the thickness of the decorating part, and the light blocking piece and the circuit board can be clamped together so that positioning of the light blocking piece can be more accurate, and light can be effectively shielded; light is prevented from jumping out of the preset area to avoid light leakage.

Description

Technical Field

[0001] The utility model belongs to the field of lamp components, and in particular relates to a tail lamp light blocking structure. Background Art

[0002] In the prior art, the light shielding plate of a lamp is usually integrally formed with the decorative part or the lamp housing. This design simplifies the assembly process. For other lamp structures with a large number of light shielding plates, a separate light shielding structure is usually provided. For example, the Chinese patent number "CN202221148797.6" and the patent name "An optical integrated unit for a vehicle lamp" discloses a lamp structure. Since a large number of light shielding plates must be integrated together, a separate first light shielding plate and a second light shielding plate are provided. The first light shielding plate and the second light shielding plate are respectively fixed to the circuit board. The lamp body is large in size, and the structure of each component can be designed at will. However, in some miniaturized lamp structures, due to the layout restrictions of the lampshade and the circuit board, the demolding volume of the decorative parts is strictly constrained.

[0003] For example, the taillights of electric bicycles are now more popularly designed with a flat structure. In order to ensure the space inside the taillight, the taillight decorative parts are designed to be relatively thin. This not only increases the internal space and reduces the weight of the taillight, but also reduces material costs, making the taillight more competitive in the market. However, many taillights adopt an arc-shaped structure, and generally the turn signal is required to be integrated with the taillight to form a headlight with dual functions of braking and turning. In this way, the taillight decorative parts or lamp housings must be provided with light shields, and the decorative parts and lamp housings are affected by the appearance design and cannot be greatly changed. For example, the thickness of the decorative parts. If the light shield is to be integrally formed with the decorative parts, in order to ensure the needs of the injection molding process of the decorative parts, the light shield must be of the same thickness as the decorative parts. Therefore, the light shield must also be designed to be very thin, so the light shield cannot be designed to be very long to avoid the position of the light shield being offset and causing light leakage. However, in some designs To facilitate the installation of circuit boards and other components, some areas of the circuit board will protrude a longer distance from the decorative parts. In this way, the light shield must be appropriately extended. To ensure the position of the light shield, it is necessary to thicken the baffle or set a positioning structure on the light shield to fix it to the circuit board. If the injection molding process becomes difficult and the mold becomes complicated, the processing cost will also increase, and the product qualification rate may decrease. The positioning structure is not easy to set for a thin light shield. If the light shield is thickened, there will be process problems. For example, if a split structure is adopted, the light shield is manufactured separately and then installed on the decorative parts. Although the injection molding process problem can be solved, the shape of the decorative parts is relatively special, and the installation is not very convenient and the speed is slow. Since the circuit board and multiple components are limited to each other, there will be many technical problems in how to facilitate the installation of the circuit board and how to effectively block light to prevent light from escaping from the predetermined area and avoid light leakage. Utility Model Content

[0004] In view of the above-mentioned prior art, the purpose of the present utility model is to provide a more practical taillight light blocking structure.

[0005] The technical solution of the utility model is achieved as follows: a taillight light-blocking structure comprises a light-blocking sheet and a decorative piece, the decorative piece is provided with a light-blocking plate, a shell plate and a mounting portion, the shell plate is provided with at least one lamp hole, the mounting portion is provided with a mounting hole or a mounting buckle so that the decorative piece and other components can be mounted together, the light-blocking sheet is provided with a slot and the slot width is greater than the thickness of the circuit board so that the light-blocking sheet can be snapped together with the circuit board to form an integrated structure so that when the decorative piece and the circuit board are assembled together, the light-blocking sheet and the light-blocking plate are joined to form a complete light-blocking structure, and the light-blocking structure divides a lamp hole on the shell plate into at least two, namely, a first lamp hole and a second lamp hole.

[0006] The beneficial effects of such a design are as follows: the light shielding sheet and the decorative parts are injection molded separately with a split structure, and the injection molding process will not be affected by structural reasons. The light shielding sheet can be set to a corresponding thickness as needed and is no longer affected by the thickness of the decorative parts. The light shielding sheet and the circuit board can be snapped together to make the positioning of the light shielding sheet more accurate, and can effectively block light, prevent light from escaping from the predetermined area and avoid light leakage. Such a design is not only easy to install but also has a very reliable structure. It solves the problem of insufficient structural strength at the connection between the light shielding sheet and the decorative parts, improves the reliability and service life of the product, significantly reduces the difficulty of demolding the decorative parts, improves production efficiency, simplifies the assembly process, and improves production efficiency.

[0007] Furthermore, the light blocking sheet includes a light blocking portion, a clamping portion and a limiting portion, the lower end of the clamping portion is fixed to the light blocking portion and the upper end is fixed to the limiting portion, the clamping slot is located between the light blocking portion and the limiting portion and is adjacent to the clamping portion, and a clamping slot is provided on the circuit board so that the clamping slot is clamped with the clamping portion, thereby ensuring that the circuit board and the light blocking sheet are clamped together more stably and accurately.

[0008] Furthermore, the thickness of the limiting portion is greater than that of the engaging portion. The thicker the limiting portion is, the higher the strength is. This can prevent the circuit board from swinging relative to the light shielding sheet after being engaged, optimize the optical performance, and effectively prevent light from escaping.

[0009] Furthermore, the width of the card slot is the same as the thickness of the circuit board, and an inclined opening is provided at the opening of the card slot so that the width of the card slot opening is greater than the width of the card slot, which facilitates the circuit board to be engaged in the card slot.

[0010] Furthermore, the limiting portion is provided with a through hole and the light blocking portion is provided with a blind hole at a corresponding position so that the circuit board can be fixed between the limiting portion and the light blocking portion by screws. In this way, the circuit board is fixed more stably to avoid loosening, position displacement or light leakage of the light blocking piece.

[0011] Furthermore, an inclined abutting end surface is provided at one end where the light blocking plate and the light blocking sheet are joined to match the joining end of the light blocking sheet, so that installation is easier and the light blocking plate has a shorter extension distance and is not easily bent.

[0012] Furthermore, the thickness of the light blocking film is greater than that of the light blocking plate. The light blocking film is provided with a plug-in slot so that the light blocking plate can be inserted into the plug-in slot of the light blocking film when the decorative component and the circuit board are assembled together. In this way, after the light blocking film and the light blocking plate are plugged in, no light leakage will occur to cause light interference, and the positioning of the light blocking film is also more stable.

[0013] Furthermore, the plug-in slot is provided with a larger draft angle so that the relative position of the light baffle plate and the light baffle sheet can be corrected when the light baffle plate is inserted into the plug-in slot. In this way, even if there is a certain misalignment in the position during installation, it can be corrected to the accurate position by relying on the inclined surface, and the installation fault tolerance is better, making the installation more convenient, time-saving and efficient.

[0014] Furthermore, the light blocking sheet is provided with a stepped joint end, the joint end is provided with a first connecting plate, a second connecting plate and a transition end face, the transition end face and the abutting end face are inclined at the same angle, the thickness of the first connecting plate is greater than the thickness of the second connecting plate, and the transition end face is arranged at the connecting position between the first connecting plate and the second connecting plate. By bending the stepped surface, light will not leak even if there is a gap between the light blocking sheet and the light blocking plate, thereby improving the lighting effect.

[0015] Furthermore, the decorative component is provided with a first light baffle and a second light baffle, the light baffles include the first light baffle and the second light baffle, the first light baffle and the first light baffle form a first light shading structure, the second light baffle and the second light baffle form a second light shading structure, the first light shading structure and the second light shading structure divide the lamp hole into a first lamp hole, a second lamp hole and a third lamp hole, the first light baffle and the second light baffle are fixed to corresponding positions of the circuit board by screws or snap-on structures, so that a symmetrical design can be achieved, that is, turn signals are arranged on both sides of the brake light, and the light of the turn signal and the brake light will not affect each other under the action of the first light shading structure and the second light shading structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional schematic diagram of a circuit board installed in a taillight light shielding structure of the utility model;

[0017] Figure 2 This is a three-dimensional schematic diagram of a taillight light shielding structure of the utility model in a state where a circuit board is not installed;

[0018] Figure 3 This is a three-dimensional schematic diagram of a decorative component of a taillight light-blocking structure of the utility model;

[0019] Figure 4 A schematic diagram of an implementation of a light shielding sheet of a taillight light shielding structure of the utility model;

[0020] Figure 5 It is a schematic diagram of another implementation method of a taillight light blocking structure turning light blocking sheet of the utility model;

[0021] Figure 6 This is a three-dimensional schematic diagram of the relative positions of a light-blocking structural decorative part of a taillight and a light-blocking sheet of the utility model;

[0022] Figure 7 This is a three-dimensional schematic diagram of the rear side of a taillight light-blocking structure decorative component of the utility model;

[0023] Figure 8 The utility model is a schematic diagram of a circuit board of a taillight light-shielding structure. DETAILED DESCRIPTION

[0024] As required, detailed embodiments of the present invention are disclosed herein, but it should be understood that the disclosed embodiments are only exemplary of the present invention, and the present invention may be implemented in different and alternative forms. The drawings are not necessarily drawn to scale, and certain features may be exaggerated or reduced to show the details of specific components. Therefore, the specific structural and functional details disclosed herein should not be understood as having a limiting meaning, but only as a representative basis to teach those skilled in the art to adopt the present invention differently. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present invention.

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown, a taillight light blocking structure includes a light blocking piece 1 and a decorative piece 2, the decorative piece 2 is provided with a light blocking plate 21, a shell plate 22 and a mounting portion 23, the shell plate 22 is provided with at least one lamp hole 3, the mounting portion 23 is provided with a mounting hole 24 or a mounting buckle 25, which can install the decorative piece 2 together with other parts, the light blocking piece 1 is provided with a card slot 10, and the width of the card slot 10 is slightly larger than the thickness of the circuit board 4 or the width of the card slot 10 is the same as the thickness of the circuit board 4, so that the light blocking piece 1 can be snapped with the circuit board 4 to form an integrated structure, so that when the decorative piece 2 and the circuit board 4 are assembled together, the light blocking piece 1 and the light blocking plate 21 are joined to form a complete light blocking structure 5, the width of the card slot 10 is slightly larger than the thickness of the circuit board 4 for easy installation, and the width of the card slot 10 is the same as the thickness of the circuit board 4 for more stability after installation, and the light blocking structure 5 divides a lamp hole 3 on the shell plate 22 into at least two, namely a first lamp hole 31 and a second lamp hole 32. A mounting buckle 25 is provided at the lower end of the decorative piece 2 , a mounting hole 24 is provided at the upper end of the decorative piece 2 , and a plurality of mounting holes 24 are also provided inside the decorative piece 2 , and screws can be installed in the mounting holes 24 .

[0026] like Figure 4 , Figure 5and Figure 8 As shown, the light blocking sheet 1 includes a light blocking portion 11, a clamping portion 12 and a limiting portion 13. The lower end of the clamping portion 12 is fixed to the light blocking portion 11 and the upper end is fixed to the limiting portion 13. The clamping slot 10 is located between the light blocking portion 11 and the limiting portion 13 and is adjacent to the clamping portion 12. A clamping slot 40 is provided on the circuit board 4 so that the clamping slot 40 is clamped with the clamping portion 12. The length of the light blocking portion 11 is greater than the length of the limiting portion 13, and the thickness of the limiting portion 13 is greater than the thickness of the clamping portion 12.

[0027] like Figure 4 , Figure 5 and Figure 8 As shown, the width of the card slot 10 is the same as the thickness of the circuit board 4 , and an inclined opening 9 is provided at the opening of the card slot 10 so that the width of the card slot 10 at the opening is greater than the width of the card slot 10 .

[0028] like Figure 4 , Figure 5 and Figure 8 As shown, the limiting portion 13 is provided with a through hole 19 and the light blocking portion 11 is provided with a blind hole 20 at the corresponding position so that the circuit board 4 can be fixed between the limiting portion 13 and the light blocking portion 11 by screws. The light blocking sheet 1 can also be fixed on the circuit board 4 by alternative connection methods such as snapping, welding, and bonding to adapt to different production needs and application scenarios.

[0029] like Figure 3 As shown, one end of the light blocking plate 21 that is joined with the light blocking sheet 1 is provided with an inclined abutting end surface 26 that matches the joining end 14 of the light blocking sheet 1 .

[0030] like Figure 3 and Figure 5 As shown, the thickness of the light shielding sheet 1 is greater than that of the light shielding plate 21 , and the light shielding sheet 1 is provided with an inserting groove 15 so that the light shielding plate 21 can be inserted into the inserting groove 15 of the light shielding sheet 1 when the decorative element 2 and the circuit board 4 are assembled together.

[0031] like Figure 5 As shown, the insertion slot 15 is provided with a larger draft angle so that the relative position of the light blocking plate 21 and the light blocking sheet 1 can be corrected when the light blocking plate 21 is inserted into the insertion slot 15 , so that the opening of the insertion slot 15 is relatively large and is easier to be installed with the decorative component 2 .

[0032] like Figure 4 As shown, the light blocking piece 1 is provided with a stepped joint end 14, and the joint end 14 is provided with a first connecting plate 16, a second connecting plate 17 and a transition end face 18. The transition end face 18 and the abutting end face 26 are inclined at the same angle. When the light blocking piece 1 follows the circuit board 4 to be installed on the decorative component 2, the transition end face 18 and the abutting end face 26 abut or limit each other. The thickness of the first connecting plate 16 is greater than the thickness of the second connecting plate 17, and the transition end face 18 is arranged at the connecting position between the first connecting plate 16 and the second connecting plate 17.

[0033] like Figure 6 Figure 7 As shown, the decorative part 2 is provided with a first light baffle 27 and a second light baffle 28, the light baffle 1 includes a first light baffle 7 and a second light baffle 8, the first light baffle 27 and the first light baffle 7 form a first light shading structure 51, the second light baffle 28 and the second light baffle 8 form a second light shading structure 52, the first light shading structure 51 and the second light shading structure 52 divide the lamp hole 3 into a first lamp hole 31, a second lamp hole 32 and a third lamp hole 33, the first light baffle 7 and the second light baffle 8 are fixed to the corresponding positions of the circuit board 4 by screws or snap structures, the first lamp hole 31 and the third lamp hole 33 can be used as turn signal lamp holes 3, the second lamp hole 32 located in the middle can be used as a brake lamp hole 3, the taillight main body structure is crescent-shaped, so the light blocking structure is also designed to be a crescent-shaped structure, and the circuit board 4 is also close to a crescent-shaped or C-shaped structure.

Claims

1. A taillight light shielding structure, comprising a light shielding sheet (1) and a decorative piece (2), wherein the decorative piece (2) is provided with a light shielding plate (21), a shell plate (22) and a mounting portion (23), wherein the shell plate (22) is provided with at least one lamp hole (3), and the mounting portion (23) is provided with a mounting hole (24) or a mounting buckle (25) capable of mounting the decorative piece (2) together with other components, characterized in that: The light shielding sheet (1) is provided with a slot (10) and the width of the slot (10) is greater than the thickness of the circuit board (4) so ​​that the light shielding sheet (1) can be engaged with the circuit board (4) to form an integrated structure, so that when the decorative component (2) and the circuit board (4) are assembled together, the light shielding sheet (1) and the light shielding plate (21) are engaged to form a complete light shielding structure (5), and the light shielding structure (5) divides one of the lamp holes (3) on the shell plate (22) into at least two.

2. The taillight light shielding structure according to claim 1, characterized in that: The light shielding sheet (1) comprises a light shielding portion (11), a locking portion (12) and a limiting portion (13); the lower end of the locking portion (12) is fixed to the light shielding portion (11) and the upper end is fixed to the limiting portion (13); the locking groove (10) is located between the light shielding portion (11) and the limiting portion (13) and is adjacent to the locking portion (12); and the circuit board (4) is provided with a locking groove (40) so that the locking groove (40) is locked with the locking portion (12).

3. The taillight light shielding structure according to claim 2, characterized in that: The thickness of the limiting portion (13) is greater than the thickness of the locking portion (12).

4. The taillight light shielding structure according to claim 1, characterized in that: The width of the card slot (10) is the same as the thickness of the circuit board (4), and an inclined opening (9) is provided at the opening of the card slot (10) so that the width of the card slot (10) at the opening is greater than the width of the card slot (10).

5. The taillight light shielding structure according to claim 3, characterized in that: The limiting portion (13) is provided with a through hole (19) and the light shielding portion (11) is provided with a blind hole (20) at a corresponding position, so that the circuit board (4) can be fixed between the limiting portion (13) and the light shielding portion (11) by means of screws.

6. The taillight light shielding structure according to claim 1, characterized in that: One end of the light blocking plate (21) joined to the light blocking sheet (1) is provided with an inclined abutting end surface (26) matching the joining end (14) of the light blocking sheet (1).

7. The taillight light shielding structure according to claim 6, characterized in that: The thickness of the light shielding sheet (1) is greater than the thickness of the light shielding plate (21), and the light shielding sheet (1) is provided with an insertion slot (15) so that the light shielding plate (21) can be inserted into the insertion slot (15) of the light shielding sheet (1) when the decorative component (2) and the circuit board (4) are assembled together.

8. The taillight light shielding structure according to claim 7, characterized in that: The insertion slot (15) is provided with a draft angle so that the relative position of the light blocking plate (21) and the light blocking sheet (1) can be corrected when the light blocking plate (21) is inserted into the insertion slot (15).

9. The taillight light shielding structure according to claim 7, characterized in that: The light blocking sheet (1) is provided with a stepped joint end (14), the joint end (14) being provided with a first connecting plate (16), a second connecting plate (17) and a transition end face (18), the transition end face (18) and the abutting end face (26) being arranged at the same inclined angle, the thickness of the first connecting plate (16) being greater than the thickness of the second connecting plate (17), and the transition end face (18) being arranged at a joint position between the first connecting plate (16) and the second connecting plate (17).

10. The taillight light shielding structure according to any one of claims 1 to 9, characterized in that: The decorative component (2) is provided with a first light blocking plate (27) and a second light blocking plate (28); the light blocking plate (1) comprises a first light blocking plate (7) and a second light blocking plate (8); the first light blocking plate (27) and the first light blocking plate (7) form a first light shielding structure (51); the second light blocking plate (28) and the second light blocking plate (8) form a second light shielding structure (52); the first light shielding structure (51) and the second light shielding structure (52) divide the lamp hole (3) into a first lamp hole (31), a second lamp hole (32) and a third lamp hole (33); the first light blocking plate (7) and the second light blocking plate (8) are fixed to corresponding positions of the circuit board (4) by means of screws or buckle structures.

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