Vehicle lamp thick-wall part structure

Abstract

The utility model belongs to the technical field of car lamps, and particularly relates to a car lamp thick-wall piece structure which comprises a light inlet part and a light guide part which are connected. The light guide part comprises a second cylinder and a second circular truncated cone, and one end of the upper surface of the second circular truncated cone is connected with the second cylinder; a light guide groove is formed in the middle of the second cylinder, one end of the light guide groove is cylindrical, the other end of the light guide groove is conical, one end of the light guide groove penetrates through the end, away from the second circular truncated cone, of the second cylinder, and the other end of the light guide groove extends into the second circular truncated cone; a first total reflection surface is arranged at the other end of the light guide groove, and a second total reflection surface is arranged on the inner wall of the second circular truncated cone body; the generatrix of the first fully reflecting surface is parallel to the generatrix of the second fully reflecting surface, and the generatrix of the first fully reflecting surface is equal to the generatrix of the second fully reflecting surface in length; the light is homogenized through the first total reflection surface and the second total reflection surface, and the uniformity of the light emitted from the light emitting surface is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle lamps, and in particular relates to a thick-walled component structure of a vehicle lamp. Background Art

[0002] With the rapid development of automobile lighting technology, users' pursuit of lamp shapes has become increasingly diversified, and aesthetics is also an important consideration. Single-function, multi-light-outlet lighting appearance effects are also the mainstream form in the current field of automobile lighting technology.

[0003] In traditional projects, the existing solution is that after the light is emitted from the LED, it passes through a series of action devices and then emerges from the light-emitting surface. In order to achieve the lighting effect of multiple light outlets, the existing solution usually increases the number of LEDs, which is costly and generates a lot of heat. Utility Model Content

[0004] The utility model aims to provide a thick-walled structure of a vehicle lamp to solve the technical problems of increased cost and heat generation due to a large number of LEDs, so as to simplify the structure and reduce the cost.

[0005] In order to solve the above technical problems, the utility model provides a thick-walled structure of a vehicle lamp, comprising: a light incident portion and a light guide portion, wherein the light incident portion is connected to the light guide portion;

[0006] The light guide portion comprises: a second cylinder and a second frustum, wherein one end of the upper surface of the second frustum is connected to the second cylinder;

[0007] A light guide groove is provided in the middle of the second cylinder, one end of the light guide groove is cylindrical, the other end of the light guide groove is conical, one end of the light guide groove passes through one end of the second cylinder away from the second frustum, and the other end of the light guide groove extends into the second frustum;

[0008] A first total reflection surface is provided on the other end of the light guide groove, and a second total reflection surface is provided on the inner wall of the second truncated cone;

[0009] The first total reflection surface is conical, the second total reflection surface is truncated cone, the generatrix of the first total reflection surface is parallel to the generatrix of the second total reflection surface, and the generatrix of the first total reflection surface is equal to the generatrix of the second total reflection surface.

[0010] Furthermore, the light incident portion includes: a first cylinder and a first frustum, wherein one end of the upper surface of the first frustum is connected to the first cylinder, and the other end of the first cylinder is connected to one end of the lower surface of the second frustum.

[0011] Furthermore, a groove is provided in the middle of the other end of the first truncated cone, and a light incident surface is provided on one end of the groove close to the first truncated cone to collimate the light.

[0012] Furthermore, a third total reflection surface is provided on the inner wall of the first truncated cone, and the third total reflection surface is truncated cone-shaped.

[0013] Furthermore, a light emitting surface is arranged on one end of the second cylinder away from the second truncated cone, the light emitting surface is annular, and a pattern is arranged on the light emitting surface.

[0014] Furthermore, the light incident surface refracts and collimates the light and then propagates to the first total reflection surface, the first total reflection surface totally reflects the light and then propagates to the second total reflection surface, and the second total reflection surface totally reflects the light and then propagates to the light exiting surface.

[0015] Furthermore, the light incident surface refracts and collimates the light and then propagates it to the third total reflection surface, the third total reflection surface refracts the light and then propagates it to the first total reflection surface, the first total reflection surface causes the light to be totally reflected and then propagates it to the second total reflection surface, and the second total reflection surface causes the light to be totally reflected and then propagates it to the light exiting surface.

[0016] Furthermore, the light in the light incident portion is parallel to the light in the second cylinder, and the light in the light incident portion and the light in the second cylinder are both parallel to the axis of the light guide groove;

[0017] The included angle between the axis of the light guide groove and the generatrix of the first total reflection surface is 40° to 50°.

[0018] The beneficial effects of the utility model are:

[0019] 1. The lighting effect of the ring-shaped light outlet can be achieved with fewer LEDs, reducing the cost and power consumption of the car lights.

[0020] 2. The light is homogenized by the first total reflection surface and the second total reflection surface, thereby improving the uniformity of the light emitted from the light emitting surface.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is a structural schematic diagram of a thick-walled structure of a vehicle lamp of the utility model;

[0024] Figure 2 yes Figure 1 sectional view of .

[0025] In the figure:

[0026] 1. light incident portion; 11. first cylinder; 12. first truncated cone; 121. light incident surface; 122. third total reflection surface; 123. groove;

[0027] 2. light guide portion; 21. second cylinder; 211. light guide groove; 212. first total reflection surface; 22. second truncated cone; 221. second total reflection surface;

[0028] 3. Glossy surface. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Example:

[0031] like Figure 1 to Figure 2As shown, a thick-walled structure of a vehicle lamp comprises: a light incident portion 1 and a light guiding portion 2, wherein the light incident portion 1 is connected to the light guiding portion 2; the light guiding portion 2 comprises: a second cylinder 21 and a second frustum 22, wherein one end of the upper surface of the second frustum 22 is connected to the second cylinder 21, and the axes of the second cylinder 21 and the second frustum 22 are colinear; the end close to the light incident portion is the upper surface, and the end away from the light incident portion is the lower surface; a light guiding groove 211 is provided in the middle of the second cylinder 21, wherein one end of the light guiding groove 211 is cylindrical, and the other end of the light guiding groove 211 is conical, wherein one end of the light guiding groove 211 passes through the end of the second cylinder 21 away from the second frustum 22, and the other end of the light guiding groove 211 extends into the second frustum 22, and the diameter of the other end of the light guiding groove 211 gradually decreases in the direction away from the second cylinder 21.

[0032] like Figure 2 As shown, a first total reflection surface 212 is provided on the other end of the light guide groove 211, and a second total reflection surface 221 is provided on the inner wall of the second truncated cone 22; the first total reflection surface 212 is coated on the inner wall of the other end of the light guide groove 211, and the first total reflection surface 212 is conical, the second total reflection surface 221 is coated on the inner wall of the second truncated cone 22, and the second total reflection surface 221 is truncated cone, the busbar of the first total reflection surface 212 is parallel to the busbar of the second total reflection surface 221, and the lengths of the busbars of the first total reflection surface 212 and the busbars of the second total reflection surface 221 are equal.

[0033] The light incident part 1 comprises: a first cylinder 11 and a first frustum body 12, one end of the upper surface of the first frustum body 12 is connected to the first cylinder 11, and the other end of the first cylinder 11 is connected to one end of the lower surface of the second frustum body 22; a groove 123 is arranged in the middle of the other end of the first frustum body 12, and a light incident surface 121 is arranged on the end of the groove 123 close to the first frustum body 12 to collimate the light, and an LED is placed behind the groove 123, and a part of the light of the LED is refracted from the middle of the light incident surface 121 into the interior of the light incident part 1; a third total reflection surface 122 is arranged on the inner wall of the first frustum body 12, and the third total reflection surface 122 is frustum-shaped, and another part of the light of the LED is refracted from the top or bottom of the light incident surface 121 into the interior of the light incident part 1, and then incident on the third total reflection surface 122, and collimated by the third total reflection surface 122 into the interior of the light incident part 1.

[0034] A light emitting surface 3 is arranged on one end of the second cylinder 21 away from the second frustum 22. The light emitting surface 3 is annular and has a pattern. The annular light emitting surface 3 enables the light to achieve a unique lighting effect of an annular light outlet, and the pattern can improve the light emitting uniformity of the light emitting surface 3.

[0035] The light incident surface 121 refracts and collimates the light in the middle and then propagates to the first total reflection surface 212, the first total reflection surface 212 totally reflects the light and then propagates to the second total reflection surface 221, and the second total reflection surface 221 totally reflects the light and then propagates to the light exiting surface 3; the light incident surface 121 refracts and collimates the light from above or below and then propagates to the third total reflection surface 122, the third total reflection surface 122 refracts the light and then propagates to the first total reflection surface 212, the first total reflection surface 212 totally reflects the light and then propagates to the second total reflection surface 221, and the second total reflection surface 221 totally reflects the light and then propagates to the light exiting surface 3; the light in the light incident portion 1 is parallel to the light in the second cylinder 21, and the light in the light incident portion 1 and the light in the second cylinder 21 are both parallel to the axis of the light guide groove 211; the angle between the axis of the light guide groove 211 and the generatrix of the first total reflection surface 212 is 45°.

[0036] To summarize, the LED is placed behind the groove 123, and a part of the light from the LED is refracted from the light incident surface 121 to the first total reflection surface 212, and the first total reflection surface 212 totally reflects the light to the second total reflection surface 221, and the second total reflection surface 221 totally reflects the light and propagates it out in parallel through the light emitting surface 3; the other part of the light is first refracted from the light incident surface 121 and irradiated onto the third total reflection surface 122, and then totally reflected by the third total reflection surface 122 to the first total reflection surface 212, the first total reflection surface 212 totally reflects the light to the second total reflection surface 221, and the second total reflection surface 221 totally reflects the light and propagates it out in parallel through the light emitting surface 3, thereby obtaining a unique annular light outlet to improve the uniformity of the light output.

[0037] The various devices selected in this application are all universal standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0038] In the description of the embodiments of the present invention, 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 mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected 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.

[0039] 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.

[0040] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A thick-walled structure of a vehicle lamp, characterized in that: include: A light incident portion (1) and a light guiding portion (2), wherein the light incident portion (1) is connected to the light guiding portion (2); The light guide portion (2) comprises: a second cylinder (21) and a second frustum (22), wherein one end of the upper surface of the second frustum (22) is connected to the second cylinder (21); A light guide groove (211) is provided in the middle of the second cylindrical body (21), one end of the light guide groove (211) is cylindrical, and the other end of the light guide groove (211) is conical, one end of the light guide groove (211) passes through an end of the second cylindrical body (21) away from the second frustum body (22), and the other end of the light guide groove (211) extends into the second frustum body (22); A first total reflection surface (212) is provided on the other end of the light guide groove (211), and a second total reflection surface (221) is provided on the inner wall of the second truncated cone (22); The first total reflection surface (212) is conical, the second total reflection surface (221) is truncated cone, the generatrix of the first total reflection surface (212) is parallel to the generatrix of the second total reflection surface (221), and the generatrix of the first total reflection surface (212) and the generatrix of the second total reflection surface (221) are equal in length.

2. A thick-walled structure of a vehicle lamp as claimed in claim 1, characterized in that: The light incident portion (1) comprises: a first cylinder (11) and a first frustum (12); one end of the upper surface of the first frustum (12) is connected to the first cylinder (11), and the other end of the first cylinder (11) is connected to one end of the lower surface of the second frustum (22).

3. A thick-walled structure of a vehicle lamp as claimed in claim 2, characterized in that: A groove (123) is provided in the middle of the other end of the first truncated cone (12), and a light incident surface (121) is provided on one end of the groove (123) close to the first truncated cone (12) to collimate light.

4. A thick-walled structure of a vehicle lamp as claimed in claim 3, characterized in that: A third total reflection surface (122) is provided on the inner wall of the first truncated cone body (12), and the third total reflection surface (122) is truncated cone-shaped.

5. A thick-walled structure of a vehicle lamp as claimed in claim 4, characterized in that: A light emitting surface (3) is provided on one end of the second cylinder (21) away from the second truncated cone (22); the light emitting surface (3) is annular and is provided with a pattern.

6. A thick-walled structure of a vehicle lamp as claimed in claim 5, characterized in that: The light incident surface (121) refracts and collimates the light and then propagates it to the first total reflection surface (212); the first total reflection surface (212) totally reflects the light and then propagates it to the second total reflection surface (221); the second total reflection surface (221) totally reflects the light and then propagates it to the light exit surface (3).

7. A thick-walled structure of a vehicle lamp as claimed in claim 5, characterized in that: The light incident surface (121) refracts and collimates the light and then propagates to the third total reflection surface (122); the third total reflection surface (122) refracts the light and then propagates to the first total reflection surface (212); the first total reflection surface (212) totally reflects the light and then propagates to the second total reflection surface (221); the second total reflection surface (221) totally reflects the light and then propagates to the light exiting surface (3).

8. The thick-walled structure of a vehicle lamp according to claim 1, characterized in that: The light in the light entrance portion (1) is parallel to the light in the second cylindrical body (21), and the light in the light entrance portion (1) and the light in the second cylindrical body (21) are both parallel to the axis of the light guide groove (211); The included angle between the axis of the light guide groove (211) and the generatrix of the first total reflection surface (212) is 40° to 50°.

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