Light guide strip and light guide type lamp

Abstract

The utility model discloses a light guide strip and a light guide type lamp, comprising a light guide strip body, one end of which is a light guide-in light end corresponding to a light source; and the refraction piece is arranged on the outer wall of the light guide strip body and is arranged at a dark area part of a light inlet area where the light inlet end of the light guide strip is located, and refraction patterns are arranged on the surface of the side, away from the light source, of the refraction piece. According to the utility model, the refraction piece is arranged on the outer wall of the light incident area, part of light rays refracted in the light incident area irradiate the refraction piece, and a diffuse refraction phenomenon is generated under the action of the refraction patterns of the refraction piece, so that the light rays penetrating through the refraction piece are refracted in multiple directions, and the brightness of the light incident area is improved. According to the light guide type lamp, the problem that a dark space exists at the light inlet end of the light guide type lamp can be greatly solved, subjective evaluation and delicate perception of a user are improved, and development of the light guide type lamp is promoted.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile lamps, in particular to a light guide strip and a light guide type lamp. Background Art

[0002] Light guides are increasingly used in automotive lighting fixtures. Traditional light guides generally use a light source at one end, and the light generated by the light source is obliquely incident on the light guide, and the light is transmitted inside the light guide by reflection. During the transmission process, part of the light is refracted while being reflected, and the refracted light is emitted from the light guide to form illumination light. Since the surface of the light guide is smooth, the refracted light has less diffuse reflection, so a stronger light source can only be seen in the direction that meets the refraction angle.

[0003] Currently on the market, most of the headlights that use light guide strips for light output have a dark area on the light incident side of the light guide strip that is not covered by light. That is, in a section of the light incident end, less light is emitted to a specific angle, resulting in the outer surface of the headlight shape not being fully illuminated at certain viewing angles.

[0004] Therefore, how to improve the dark area at the light-entering end of the light guide strip has become a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of the present utility model is to provide a light guide strip to improve the dark area at the light incident end of the light guide strip;

[0006] Another object of the present invention is to provide a light-guiding lamp having the light-guiding strip.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A light guide strip, comprising:

[0009] A light guide bar body, one end of which is a light guide end for guiding light corresponding to the light source;

[0010] The refracting member is arranged on the outer wall of the light guide strip body and in the dark area of ​​the light entrance region where the light guide end is located. The refracting member has a refractive pattern on its surface away from the light source.

[0011] Optionally, in the above-mentioned light guide strip, the light guide strip body includes a main body area and the light incident area, the light guide light inlet end transitions to the main body area through the light incident area, and the light incident area extends along a curve.

[0012] Optionally, in the above light guide bar, the end of the deflecting member connected to the light guide bar body is the root of the deflecting member, and the end of the deflecting member away from the light guide bar body is the top of the deflecting member;

[0013] The thickness of the refraction member gradually decreases in a direction from the root of the refraction member to the top of the refraction member.

[0014] Optionally, in the above light guide strip, a surface of the refracting element facing the light source is a plane or a curved surface.

[0015] Optionally, in the above light guide strip, a surface of the refracting element on one side away from the light source is perpendicular to the light incident direction of the light source.

[0016] Optionally, in the above light guide strip, an angle β between a surface of the refracting element facing the light source and the light incident direction of the light source is 100°-130°; and / or,

[0017] The included angle α between the refractive surface of the refractive pattern and the incident direction of the light source is 60°-80°.

[0018] Optionally, in the above-mentioned light guiding strip, the refractive pattern includes a plurality of refractive curved surfaces, and an angle γ between any two adjacent refractive curved surfaces is 120°-160°.

[0019] Optionally, in the above-mentioned light guide strip, the refractive curved surface of each of the refractive patterns is a cylindrical curved surface, and the diameter of the refractive curved surface is 1 mm-2 mm.

[0020] Optionally, in the above light guide bar, the light guide bar body and the light refraction element are made of the same material and are an integrated structure; and / or,

[0021] The length L of the surface of the side of the deflecting member away from the light source protruding from the light guide strip body is 3mm-7mm; and / or,

[0022] The distance S between the end face of the light guide end and the light refracting element is 11 mm-17 mm.

[0023] The light guide strip provided by the utility model adds a refraction member on the basis of the traditional light guide strip body, and arranges the refraction member in the dark area of ​​the light entrance area where the light guide light introduction end is located, and the refraction member is connected to the outer wall of the light guide strip body. A refraction pattern is arranged on the surface of the refraction member on the side away from the light source. After the light emitted by the light source enters the light guide light introduction end and enters the light guide strip body, most of the light is transmitted forward along the extension direction of the light guide light introduction end, and only a small part of the light will be reflected and refracted in the light entrance area, resulting in a dark area in the light entrance area. The utility model arranges a refraction member on the outer wall of the light entrance area, so that part of the light refracted in the light entrance area will be irradiated on the refraction member, and diffuse refraction will be generated under the action of the refraction pattern of the refraction member, so that the light passing through the refraction member is refracted in multiple directions, thereby improving the brightness of the light entrance area. The utility model can greatly reduce the problem of dark areas in the light entrance end of light guide lamps, improve users' subjective evaluation and exquisite perception, and promote the development of light guide lamps.

[0024] A light guide lamp comprises a light guide bar and a light source arranged at the light guide end of the light guide bar, wherein the light guide bar is the light guide bar as described in any one of the above items.

[0025] The light guide lamp provided by the utility model has all the technical effects of the light guide strip, which will not be described in detail herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0027] Figure 1 A schematic diagram of a partial structure of a light guide strip provided in an embodiment of the utility model;

[0028] Figure 2 A schematic diagram of a partial structure of a light guide lamp provided in an embodiment of the utility model;

[0029] Figure 3 This is a partial enlarged view of the location of the refraction member provided in the embodiment of the utility model.

[0030] The markings in the figure are:

[0031] 100-light guide strip body; 101-light guide end;

[0032] 200-refractive element; 201-refractive pattern;

[0033] 300 - Light source. DETAILED DESCRIPTION

[0034] At present, traditional light guide strips generally have a straight light-introducing end and a relatively long main body area, and the main body area is the main lit area. The light-introducing end transitions to the main body area through the light-introducing area. Generally, there is a certain angle between the extension direction of the light-introducing end and the extension direction of the main body area. The light-introducing area is used to achieve a smooth transition between the two, so the light-introducing area is usually a curved structure. The incident light of the light source has a smaller angle with the incident light in the light-introducing end and the head end area of ​​the light-introducing area (i.e., the end area connected to the light-introducing end), so the incident light cannot form a large amount of refraction in this area, which makes it easy for dark areas to appear in this area.

[0035] Based on this, the utility model provides a light guide strip to improve the dark area at the light incident end of the light guide strip.

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0037] like Figure 1-Figure 3 As shown, the embodiment of the utility model discloses a light guide bar, which includes a light guide bar body 100 and a light refracting member 200. One end of the light guide bar body 100 is a light guide end 101 corresponding to a light source 300, and the light guide end 101 should be understood as a section of area, rather than just the end face of the light guide bar body 100 close to the light source 300.

[0038] The refracting member 200 is disposed on the outer wall of the light guide bar body 100 and arranged in the dark area of ​​the light incident area where the light guide light inlet end 101 is located. The surface of the refracting member 200 on the side away from the light source 300 is provided with a refraction pattern 201. The incident light of the light source 300 can act on the refracting member 200 directly or indirectly (i.e., after reflection and / or reflection), and the refraction pattern 201 (i.e., the rougher surface) on the refracting member 200 is used to form a diffuse refraction phenomenon, so that the dark area of ​​the light incident area can emit more light to the outside, so as to improve the brightness of the dark area, and then improve the dark area at the light incident end of the light guide bar.

[0039] In summary, the light guide bar provided by the utility model adds a refracting member 200 on the basis of the traditional light guide bar body 100, and the refracting member 200 is arranged in the dark area of ​​the light entrance area where the light introduction end 101 is located, and the refracting member 200 is connected to the outer wall of the light guide bar body 100. The refracting member 200 is provided with a refractive pattern 201 on the side surface away from the light source, and after the light emitted by the light source enters the light introduction end 101 and enters the light guide bar body 100, most of the light is transmitted forward along the extension direction of the light introduction end 101, and only a small part of the light will be reflected and refracted in the light entrance area, resulting in a dark area in the light entrance area.

[0040] The utility model sets a refracting member 200 on the outer wall of the light incident area, so that part of the light refracted in the light incident area will be irradiated on the refracting member 200, and diffuse refraction will be generated under the action of the refraction pattern 201 of the refracting member 200, so that the light passing through the refracting member 200 is refracted in multiple directions, thereby improving the brightness of the light incident area. The utility model can greatly reduce the problem of dark areas at the light incident end of light guide lamps, improve users' subjective evaluation and exquisite perception, and promote the development of light guide lamps.

[0041] In a specific embodiment of the present invention, the light guide strip body 100 includes a main body area and a light entrance area, and the light guide end 101 transitions to the main body area through the light entrance area, and the light entrance area extends along a curve. The head end of the light entrance area (i.e., the part close to the light guide end 101) is usually a dark area, so the deflecting element 200 can be set at the turning position of the light entrance area to increase the refraction effect at this position through the deflecting element 200, thereby improving the brightness of this area.

[0042] For ease of understanding, the end of the refracting member 200 connected to the light guide bar body 100 is defined as the root of the refracting member, and the end of the refracting member 200 away from the light guide bar body 100 is defined as the top of the refracting member. In this embodiment, the thickness of the refracting member 200 gradually decreases in the direction from the root of the refracting member to the top of the refracting member. That is, the thickness of the root of the refracting member is greater than the thickness of the top of the refracting member. First, it can be ensured that the refracting member 200 and the light guide bar body 100 have a larger connection area, and the connection between the refracting member 200 and the light guide bar body 100 is more reliable, and it is prevented that a small external force can break the refracting member 200 at the root of the refracting member. Secondly, it can be understood by those skilled in the art that the thickness of the medium can affect the refraction direction of the light. Therefore, the refracting member 200 is designed as a structure with a gradually changing thickness, so that the light can be emitted in more directions, so as to achieve the purpose of improving the brightness of a larger area.

[0043] like Figure 3As shown, further, the side surface of the refraction member 200 facing the light source 300 is a plane or a curved surface. In this embodiment, the shape of the side surface of the refraction member 200 facing the light source 300 can be adaptively designed according to the shape of the cross section of the light guide bar body 100. For example, when the side surface of the refraction member 200 of the light guide bar body 100 is set as a plane, the side surface of the refraction member 200 facing the light source 300 can be designed as a plane; when the side surface of the refraction member 200 of the light guide bar body 100 is set as a curved surface, the side surface of the refraction member 200 facing the light source 300 can be designed as a curved surface, so that the appearance design of the refraction member 200 and the light guide bar body 100 is more harmonious. The utility model does not limit the shape of the side surface of the refraction member 200 facing the light source 300, as long as it can realize the gradual change of the thickness of the refraction member 200.

[0044] In a specific embodiment of the present invention, the surface of the side of the folding member 200 away from the light source 300 is perpendicular to the light incident direction of the light source 300. Since the surface of the side of the folding member 200 away from the light source 300 is perpendicular to the light incident direction of the light source 300, the surface of the side of the folding member 200 facing the light source 300 cannot be perpendicular to the light incident direction of the light source 300, otherwise the thickness of the folding member 200 will be fixed, and it is impossible to ensure that the thickness of the folding member 200 changes gradually.

[0045] Further, the angle β between the side surface of the refraction member 200 facing the light source 300 and the light incident direction of the light source 300 is 100°-130°, for example, the angle β can be designed to be 115°, 120°, etc., and the present invention does not limit the specific angle of the angle β. Those skilled in the art can select a suitable angle β according to the actual application scenario to obtain a better brightness display effect.

[0046] In this embodiment, Figure 1 As shown, the angle α between the refractive surface of the refractive pattern 201 and the incident direction of the light source 300 is 60°-80°, for example, 70°. Figure 3 As shown, the refractive pattern 201 includes a plurality of refractive surfaces, and the angle γ between any two adjacent refractive surfaces is 120°-160°. It can be understood by those skilled in the art that if the refractive surfaces are the same, the angle γ is twice the angle α. The present invention does not limit the specific angles of the angle γ and the angle α. Those skilled in the art can select appropriate angles γ and α according to actual application scenarios to obtain a better brightness display effect.

[0047] In a specific embodiment, the refractive curved surface of each refractive pattern 201 is a cylindrical curved surface, and the diameter of the refractive curved surface is 1mm-2mm, for example, 1.5mm. The length L of the side surface of the refractive element 200 away from the light source 300 protruding from the light guide strip body 100 is 3mm-7mm, for example, 5mm. The distance S from the end surface of the light guide light end 101 to the refractive element 200 is 11mm-17mm, for example, 14mm. It can be understood by those skilled in the art that the above specific dimensions can be designed by those skilled in the art according to actual needs, as long as the dark area phenomenon can be improved.

[0048] In a specific embodiment of the present invention, the light guide bar body 100 and the light refraction element 200 are made of the same material and are an integrated structure. The two can be integrally formed by an injection molding process.

[0049] The utility model can improve the dark area in the light incident area. The light guide strip is optimized on the basis of the traditional light guide strip, and a refraction member 200 is added at the dark area position to form a new light guide strip. The refraction principle of the refraction member 200 is utilized to achieve an effect that the traditional light guide strip cannot achieve, thereby solving the dark area problem in the light incident area of ​​the traditional light guide strip.

[0050] The embodiment of the utility model further discloses a light guide lamp, comprising a light guide bar and a light source 300 disposed at the light guide end 101 of the light guide bar, wherein the light guide bar is the light guide bar disclosed in the above embodiment. The light guide lamp provided by the utility model has all the technical effects of the above light guide bar due to the light guide bar, which will not be described in detail herein.

[0051] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0052] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. The elements defined by the sentence "includes a..." do not exclude the existence of other identical elements in the process, method, commodity or device that includes the elements.

[0053] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0054] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A light guide strip, characterized in that: include: A light guide bar body (100), one end of the light guide bar body (100) being a light guide end (101) for guiding light corresponding to the light source (300); The refracting member (200) is arranged on the outer wall of the light guide strip body (100) and is disposed in a dark area of ​​the light entrance region where the light guide light inlet end (101) is located. A refractive pattern (201) is provided on the surface of the refracting member (200) on one side away from the light source (300).

2. The light guide strip according to claim 1, characterized in that: The light guide strip body (100) comprises a main body area and the light entrance area, the light guide light-introducing end (101) transitions to the main body area through the light entrance area, and the light entrance area extends along a curve.

3. The light guide strip according to claim 1, characterized in that: One end of the refracting element (200) connected to the light guide strip body (100) is the root of the refracting element, and one end of the refracting element (200) away from the light guide strip body (100) is the top of the refracting element; In the direction from the root of the deflecting member to the top of the deflecting member, the thickness of the deflecting member (200) gradually decreases.

4. The light guide strip according to claim 3, characterized in that: A surface of the refracting element (200) facing the light source (300) is a flat surface or a curved surface.

5. The light guide strip according to claim 3, characterized in that: A surface of one side of the refracting element (200) that is away from the light source (300) is perpendicular to the light incident direction of the light source (300).

6. The light guide strip according to claim 5, characterized in that: The angle β between the surface of the folding element (200) facing the light source (300) and the incident direction of the light source (300) is 100°-130°; and / or, The included angle α between the refractive surface of the refractive pattern (201) and the incident direction of the light source (300) is 60°-80°.

7. The light guide strip according to any one of claims 1 to 6, characterized in that: The refractive pattern (201) comprises a plurality of refractive curved surfaces, and the included angle γ between any two adjacent refractive curved surfaces is 120°-160°.

8. The light guide strip according to claim 7, characterized in that: The refractive curved surface of each of the refractive patterns (201) is a cylindrical curved surface, and the diameter of the refractive curved surface is 1 mm-2 mm.

9. The light guide strip according to any one of claims 1 to 6, characterized in that: The light guide strip body (100) and the light refraction element (200) are made of the same material and are an integrated structure; and / or, The length L of the surface of one side of the deflecting element (200) away from the light source (300) protruding from the light guide strip body (100) is 3 mm to 7 mm; and / or, The distance S between the end surface of the light guide end (101) and the light refracting element (200) is 11 mm to 17 mm.

10. A light guide lamp, characterized in that: The invention comprises a light guide bar and a light source (300) arranged at a light-introducing end (101) of the light guide bar, wherein the light guide bar is the light guide bar according to any one of claims 1 to 9.

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