Lighting fixture

Abstract

This utility model discloses a lighting fixture, relating to the field of lighting equipment technology. The disclosed lighting fixture includes a housing and a light source and a light guide disposed within the housing. One end of the housing has a light-transmitting area. The light guide has a light-incident surface, a first light-emitting surface, and a second light-emitting surface. The light source is arranged opposite to the light-incident surface so that the light emitted from the light source enters the interior of the light guide through the light-incident surface. The first light-emitting surface and the second light-emitting surface are arranged at a preset angle, and both the first light-emitting surface and the second light-emitting surface face the light-transmitting area, so that the light entering the interior of the light guide is reflected and then directed from the first light-emitting surface and the second light-emitting surface to the light-transmitting area. Because the light guide has a first light-emitting surface and a second light-emitting surface arranged at a preset angle, the light-emitting area can be maximized within the limited housing space, thereby reducing the brightness of the first light-emitting surface and the second light-emitting surface, softening the light, suppressing glare, and thus achieving comfortable and efficient lighting.

Description

Technical Field

[0001] This utility model relates to the field of lighting equipment technology, and in particular to a lighting fixture. Background Technology

[0002] As an indispensable device in daily life, lighting fixtures have always evolved in terms of improving luminous efficacy and reducing size. In recent years, the luminous efficacy and power density of lighting fixtures have been significantly improved, which has enabled the physical size of lighting fixtures to be made smaller while meeting the same lighting requirements, thus achieving compact and lightweight designs.

[0003] However, this trend towards "high power" and "small size" in lighting fixtures has also brought a series of new challenges, one of the most prominent being glare. Glare not only causes eye discomfort and visual fatigue, but can also lead to health problems such as headaches and nausea. Therefore, there is an urgent need to provide a solution that can effectively suppress glare and achieve comfortable and efficient lighting. Utility Model Content

[0004] This utility model discloses a lighting fixture to solve the problem of glare in lighting fixtures in related technologies.

[0005] To solve the above-mentioned technical problems, the present invention provides a lighting fixture, which includes: a housing and a light source and a light guide disposed within the housing; One end of the housing is provided with a light-transmitting area; The light guide has a light incident surface, a first light emitting surface, and a second light emitting surface. The light source is disposed opposite to the light incident surface so that the light emitted by the light source enters the interior of the light guide through the light incident surface. The first light-emitting surface and the second light-emitting surface are set at a preset angle, and both the first light-emitting surface and the second light-emitting surface face the light-transmitting area, so that the light entering the interior of the light guide is reflected and then directed from the first light-emitting surface and the second light-emitting surface to the light-transmitting area respectively.

[0006] Optionally, the light guide includes a base and a first branch arm and a second branch arm extending from the base; The end face of the base forms the light-incident surface, the first branch arm and the second branch arm are set at a preset angle, and the inner sidewalls of the first branch arm and the second branch arm respectively form the first light-emitting surface and the second light-emitting surface.

[0007] Optionally, the outer sidewalls of the first branch arm and the second branch arm are respectively provided with a plurality of micro-reflection units, the micro-reflection units being used to reflect at least a portion of the light inside the light guide to the first light-emitting surface and the second light-emitting surface, respectively.

[0008] Optionally, at least a portion of the light guide, excluding the light-incident surface, the first light-exiting surface, and the second light-exiting surface, is provided with a reflective layer.

[0009] Optionally, the outer sidewalls of the first branch arm and the second branch arm are respectively provided with a screen-printed pattern layer.

[0010] Optionally, the reflective layer is reflective paper, reflective film, or reflective coating.

[0011] Optionally, the light source includes a substrate and a plurality of light-emitting parts arranged at intervals on the substrate, and the light guide covers the plurality of light-emitting parts.

[0012] Optionally, the preset angle between the first light-emitting surface and the second light-emitting surface is in the range of 60°-120°.

[0013] Optionally, the micro-reflective unit is a protruding structure, and the ratio of the height to the diameter of the micro-reflective unit is less than or equal to 0.1.

[0014] Optionally, the diameter of the micro-reflective unit is less than or equal to 20 μm.

[0015] The technical solution adopted in this utility model can achieve the following technical effects: In the lighting fixture disclosed in this utility model, a light source and a light guide are arranged inside the housing of the lighting fixture. The light emitted by the light source can enter the interior of the light guide through the light-incident surface of the light guide and be reflected inside the light guide so that the light can be fully mixed. Since the light guide has a first light-emitting surface and a second light-emitting surface arranged at a preset angle, the light-emitting area can be expanded as much as possible in the limited housing space, thereby reducing the brightness of the first light-emitting surface and the second light-emitting surface, softening the light, suppressing the generation of glare, and thus achieving comfortable and efficient lighting. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the lighting fixture disclosed in the embodiment of this utility model; Figure 2 This is an optical path diagram of the light guide component disclosed in an embodiment of the present utility model; Figure 3 This is one of the schematic diagrams of the screen-printed pattern layer disclosed in the embodiments of this utility model; Figure 4This is a second schematic diagram of the screen-printed pattern layer disclosed in the embodiments of this utility model; Figure 5 This is a schematic diagram of the micro-reflection unit disclosed in the embodiment of this utility model.

[0017] Explanation of reference numerals in the attached figures: 100-Housing, 110-Light-transmitting area, 200-Light source, 300-Light guide, 310-Base, 311-Light incident surface, 320-First branch arm, 321-First light emitting surface, 330-Second branch arm, 331-Second light emitting surface, 340-Micro-reflective unit, 350-Reflective layer, 360-Silk screen pattern layer. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] The terms "first," "second," etc., used in the specification and claims of this utility model are used to distinguish similar objects and are not used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this utility model can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, the first object can be one or more.

[0020] The technical solutions disclosed in the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0021] Please refer to Figures 1 to 5 This utility model discloses a lighting fixture, which can be a chandelier, ceiling light, downlight, spotlight, or similar type of fixture. The lighting fixture may include a housing 100, a light source 200, and a light guide 300. The housing 100 has an internal installation space, and both the light source 200 and the light guide 300 are disposed within the housing 100. One end of the housing 100 has a light-transmitting area 110, which can be an opening at one end of the housing 100 or a light-transmitting cover plate covering the opening at one end of the housing 100.

[0022] The aforementioned light source 200 may include incandescent lamps, halogen lamps, LEDs (Light Emitting Diodes), etc. The light guide 300 may be made of materials such as PMMA (Polymethyl Methacrylate), PC (Polycarbonate), etc. The light guide 300 has a light-incident surface 311, a first light-emitting surface 321, and a second light-emitting surface 331. The light source 200 and the light-incident surface 311 of the light guide 300 are positioned opposite each other. Light emitted from the light source 200 can enter the interior of the light guide 300 through the light-incident surface 311 and be reflected on the inner wall of the light guide 300 to achieve uniform mixing of the light. The first light-emitting surface 321 and the second light-emitting surface 331 of the light guide 300 are set at a preset angle, which can range from 60° to 120°, specifically 60°, 70°, 80°, 90°, 100°, 110°, 120°, etc. The first light-emitting surface 321 and the second light-emitting surface 331 adopt the above-mentioned angle design, which can be fully extended in the limited installation space of the housing 100, thereby increasing the light-emitting area of ​​the first light-emitting surface 321 and the second light-emitting surface 331.

[0023] Both the first light-emitting surface 321 and the second light-emitting surface 331 face the light-transmitting area 110 of the housing 100. Light emitted from the light source 200 enters the interior of the light guide 300 through the light-incident surface 311, and is reflected by the inner wall of the light guide 300 to the first light-emitting surface 321 and the second light-emitting surface 331, respectively, and finally exits through the light-transmitting area 110 of the housing 100. Given a fixed power of the light source 200, the larger the light-emitting area of ​​the first light-emitting surface 321 and the second light-emitting surface 331, the smaller their light intensity. This helps to reduce the brightness of the first light-emitting surface 321 and the second light-emitting surface 331, thereby reducing the probability of glare.

[0024] As described above, the lighting fixture disclosed in this utility model improves upon related technologies. By setting a light source 200 and a light guide 300 inside the housing 100 of the lighting fixture, the light emitted from the light source 200 can enter the interior of the light guide 300 through the light incident surface 311 and be reflected inside the light guide 300, so that the light can be fully mixed. Since the light guide 300 has a first light emitting surface 321 and a second light emitting surface 331 set at a preset angle, the light emitting area can be expanded as much as possible in the limited space of the housing 100, thereby reducing the brightness of the first light emitting surface 321 and the second light emitting surface 331, softening the light, suppressing the generation of glare, and thus achieving comfortable and efficient lighting.

[0025] like Figure 1 and Figure 2As shown, the light guide 300 described above may specifically include a base 310 and a first branch arm 320 and a second branch arm 330 extending from the base 310. The base 310, the first branch arm 320, and the second branch arm 330 may be an integral structure. The end face of the base 310 forms the light incident surface 311 of the light guide 300. The first branch arm 320 and the second branch arm 330 are set at a preset angle, the range of which can be referenced to the angle range between the first light emitting surface 321 and the second light emitting surface 331. The inner sidewalls of the first branch arm 320 and the second branch arm 330 respectively form the first light emitting surface 321 and the second light emitting surface 331. It should be noted that the inner sidewall of the first branch arm 320 refers to the sidewall of the first branch arm 320 near the second branch arm 330, and the inner sidewall of the second branch arm 330 refers to the sidewall of the second branch arm 330 near the first branch arm 320. The light guide 300 adopts the above-mentioned structural design, which allows the first branch arm 320 and the second branch arm 330 to be fully extended in the limited installation space of the housing 100, thereby increasing the light emission area of ​​the first light emitting surface 321 and the second light emitting surface 331.

[0026] Considering that when light travels from a denser medium (light guide 300) to a less dense medium (air), if the angle of incidence is greater than or equal to the critical angle, the light will not be refracted but will be entirely reflected back into the light guide 300. This may prevent the light from exiting smoothly from the first light-emitting surface 321 and the second light-emitting surface 331. Therefore, multiple micro-reflective units 340 can be provided on the outer walls of the first branch arm 320 and the second branch arm 330, respectively. It should be noted that the outer wall of the first branch arm 320 refers to the side wall of the first branch arm 320 that is away from the second branch arm 330, and the outer wall of the second branch arm 330 refers to the side wall of the second branch arm 330 that is away from the first branch arm 320. The micro-reflective units 340 can be protruding or recessed structures, and can be formed inside or outside the light guide 300.

[0027] By providing the micro-reflection unit 340, at least a portion of the light rays inside the light guide 300 can be reflected to the first light-emitting surface 321 and the second light-emitting surface 331, respectively. Specifically, when light rays strike the micro-reflection unit 340, their angle of incidence changes. Once the angle of incidence is less than the critical angle, satisfying the conditions of the law of refraction, the light rays will be refracted, which helps to ensure that the light rays exit from the first light-emitting surface 321 and the second light-emitting surface 331.

[0028] To prevent light from escaping from areas other than the first light-emitting surface 321 and the second light-emitting surface 331, thus affecting illumination efficiency, in this embodiment, a reflective layer 350 can be provided in at least a portion of the light guide 300, excluding the light-incident surface 311, the first light-emitting surface 321, and the second light-emitting surface 331. The light-incident surface 311 is not provided with a reflective layer 350 to ensure that the light emitted from the light source 200 can smoothly enter the interior of the light guide 300. By providing a reflective layer 350, when light is emitted from a non-light-emitting area of ​​the light guide 300, the reflective layer 350 allows the light to return to the interior of the light guide 300, thus improving light utilization. The aforementioned reflective layer 350 can be reflective paper, a reflective film, or a reflective coating. Taking reflective paper as an example, reflective paper can be pasted onto the outer walls of the first branch arm 320 and the outer walls of the second branch arm 330, respectively. Alternatively, reflective paper can also be pasted onto the side of the base 310.

[0029] In an optional embodiment of this application, a screen-printed pattern layer 360 may also be provided on the outer side wall of the first branch arm 320 and the outer side wall of the second branch arm 330, respectively. The specific shape of the screen-printed pattern layer 360 can be referred to Figure 3 and Figure 4 As shown. By setting the silkscreen pattern layer 360, when light shines on the silkscreen pattern layer 360, because the silkscreen pattern layer 360 contains highly reflective particles (such as titanium dioxide), the light will not be refracted, but will be further reflected back into the light guide 300, thereby improving the utilization rate of light; at the same time, the silkscreen pattern layer 360 can also improve the aesthetics to a certain extent.

[0030] The light source 200 can be a strip light source, a point light source, etc. In this embodiment, the light source 200 can include a substrate and a plurality of light-emitting parts arranged at intervals on the substrate. The substrate can be a PCB (Printed Circuit Board) or an FPC (Flexible Printed Circuit). The light guide 300 can cover the plurality of light-emitting parts, so that the light emitted from the light-emitting parts can fully enter the light guide 300.

[0031] In one optional embodiment of this application, such as Figure 5 As shown, the micro-reflective unit 340 can be a protruding structure, and the ratio of the height H to the diameter D of the micro-reflective unit 340 can be less than or equal to 0.1. The diameter D of the micro-reflective unit 340 can be less than or equal to 20 μm, specifically 10 μm, 12 μm, 15 μm, 18 μm, 20 μm, etc.

[0032] In addition, in the lighting fixtures of this application, the housing 100 may be provided with an installation structure, and the lighting fixtures may be connected to load-bearing objects such as roofs and ceilings through the installation structure, thereby realizing the installation of the lighting fixtures.

[0033] The above embodiments of this utility model mainly describe the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be described in detail here.

[0034] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of the present invention.

Claims

1. A lighting fixture, characterized in that, include: Housing (100) and light source (200) and light guide (300) disposed within the housing (100); One end of the housing (100) is provided with a light-transmitting area (110); The light guide (300) has a light-incident surface (311), a first light-outceasing surface (321), and a second light-outceasing surface (331). The light source (200) is disposed opposite to the light-incident surface (311) so that the light emitted by the light source (200) enters the interior of the light guide (300) through the light-incident surface (311). The first light-emitting surface (321) and the second light-emitting surface (331) are set at a preset angle, and both the first light-emitting surface (321) and the second light-emitting surface (331) face the light-transmitting area (110), so that the light entering the interior of the light guide (300) is reflected and then directed from the first light-emitting surface (321) and the second light-emitting surface (331) to the light-transmitting area (110).

2. The lighting fixture according to claim 1, characterized in that, The light guide (300) includes a base (310) and a first branch arm (320) and a second branch arm (330) extending from the base (310). The end face of the base (310) forms the light-incident surface (311), the first branch arm (320) and the second branch arm (330) are set at a preset angle, and the inner sidewalls of the first branch arm (320) and the second branch arm (330) respectively form the first light-emitting surface (321) and the second light-emitting surface (331).

3. The lighting fixture according to claim 2, characterized in that, The outer sidewall of the first branch arm (320) and the outer sidewall of the second branch arm (330) are respectively provided with a plurality of micro-reflection units (340), which are used to reflect at least part of the light inside the light guide (300) to the first light-emitting surface (321) and the second light-emitting surface (331).

4. The lighting fixture according to claim 3, characterized in that, At least a portion of the light guide (300) other than the light incident surface (311), the first light emitting surface (321) and the second light emitting surface (331) is provided with a reflective layer (350).

5. The lighting fixture according to claim 2, characterized in that, The outer side wall of the first branch arm (320) and the outer side wall of the second branch arm (330) are respectively provided with a silkscreen pattern layer (360).

6. The lighting fixture according to claim 4, characterized in that, The reflective layer (350) is reflective paper, reflective film, or reflective coating.

7. The lighting fixture according to claim 1, characterized in that, The light source (200) includes a substrate and a plurality of light-emitting parts arranged at intervals on the substrate, and the light guide (300) covers the plurality of light-emitting parts.

8. The lighting fixture according to claim 1, characterized in that, The preset angle between the first light-emitting surface (321) and the second light-emitting surface (331) is in the range of 60°-120°.

9. The lighting fixture according to claim 3, characterized in that, The micro-reflective unit (340) has a raised structure, and the ratio of the height to the diameter of the micro-reflective unit (340) is less than or equal to 0.

1.

10. The lighting fixture according to claim 9, characterized in that, The diameter of the micro-reflective unit (340) is less than or equal to 20 μm.

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