Illuminating lamp

Abstract

The utility model discloses an illuminating lamp, which relates to the technical field of illuminating equipment and comprises a light source, a lens and a reflection cup, and the lens is arranged on the light-emitting side of the light source and can control light of the light source. The reflection cup comprises a cup body, the cup body comprises a light inlet and a light outlet, the light inlet of the cup body is opposite to the light outlet side of the lens, the inner wall of the cup body is provided with a plurality of prismatic reflection faces, the prismatic reflection faces can reflect part of light rays incident to the cup body at least twice, and the part of light rays mainly refer to light rays with large light outlet angles. The part of light can be absorbed as much as possible in the at least two reflection processes, so that the light emitting angle of the light emitted by the reflection cup can be reduced, the light emitted by the light source can be uniformly irradiated into the preset illumination area, the problem of glare caused by the fact that part of light deviates from the preset illumination area can be avoided, and the light emitting efficiency is improved. And the lighting effect and the anti-dazzle effect of the lighting lamp are improved.

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 living standards improve, manufacturers are constantly improving and upgrading the appearance and structure of lighting fixtures to meet the diverse needs of consumers and satisfy users' personalized requirements.

[0003] When lighting fixtures emit light, if some of the light deviates from the intended lighting area and shines towards the user at a large angle (such as an angle greater than 45°), this portion of the light can easily cause glare. Glare can cause visual discomfort and even damage to the user's eyes. To alleviate glare, related technologies often incorporate lenses inside the lighting fixture to control the light. However, some light still exits from the lens at a large angle, resulting in the glare problem persisting. 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:

[0006] light source;

[0007] A lens is disposed on the light-emitting side of the light source;

[0008] A reflector cup, comprising a cup body, the cup body including a light inlet and a light outlet, the light inlet being disposed opposite to the light outlet side of the lens, the inner wall of the cup body being provided with a plurality of prismatic reflective surfaces, the prismatic reflective surfaces being configured to reflect at least twice a portion of the light incident on the cup body.

[0009] Optionally, the inner wall of the cup body is provided with a plurality of protruding ridges forming the rhomboid reflective surface, the protruding ridges including a first reflective surface and a second reflective surface at a preset angle;

[0010] The first reflective surface and the second reflective surface are configured to reflect light incident on one of them between them.

[0011] Optionally, the angle between the second reflective surface of the convex ridge and the first reflective surface of the adjacent convex ridge is in the range of 85° to 95°.

[0012] Optionally, the reflector cup is made of a light-absorbing material.

[0013] Optionally, the reflector cup further includes a carrier plate, and a plurality of the cup bodies are arranged at intervals along the length direction of the carrier plate.

[0014] Optionally, the cross-sectional dimension of the light inlet of the cup body is smaller than the cross-sectional dimension of the light outlet of the cup body.

[0015] Optionally, the lens includes a mounting plate and a plurality of lens bodies, the plurality of lens bodies being spaced apart along the length direction of the mounting plate, and the lens bodies being total internal reflection lenses.

[0016] Optionally, the lighting fixture further includes a light-transmitting panel disposed on the side of the reflector away from the lens.

[0017] Optionally, the light-transmitting panel is provided with a screen-printed layer with a cutout position, the light-transmitting panel forms a transparent light-emitting part at the cutout position, and the screen-printed layer is used to block light other than the light emitted from the transparent light-emitting part.

[0018] Optionally, the lighting fixture further includes a light-mixing film disposed between the light-transmitting panel and the reflector.

[0019] The technical solution adopted in this utility model can achieve the following technical effects:

[0020] The lighting fixture disclosed in this utility model includes a light source, a lens, and a reflector. The lens is positioned on the light-emitting side of the light source and can control the light intensity. The reflector includes a cup body with a light inlet and a light outlet. The light inlet of the cup body is positioned opposite to the light-emitting side of the lens. The inner wall of the cup body has multiple prismatic reflective surfaces. These prismatic reflective surfaces can reflect a portion of the light incident on the cup body at least twice. This portion of the light mainly refers to light with a large light-emitting angle. During the at least two reflections, this portion of the light can be absorbed as much as possible, thereby reducing the light-emitting angle of the light emitted from the reflector. This allows the light emitted from the light source to be evenly illuminated within the preset lighting area, thus avoiding glare caused by some light deviating from the preset lighting area and improving the lighting effect and anti-glare effect of the lighting fixture. Attached Figure Description

[0021] Figure 1 This is an exploded view of the lighting fixture disclosed in the embodiments of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the lighting fixture disclosed in the embodiment of this utility model;

[0023] Figure 3 for Figure 2 Cross-sectional view at point AA along the middle;

[0024] Figure 4 This is one of the structural schematic diagrams of the reflector cup disclosed in the embodiments of this utility model;

[0025] Figure 5 This is a second schematic diagram of the reflector cup disclosed in this embodiment of the present utility model;

[0026] Figure 6 This is the optical path diagram of the rhomboid reflective surface disclosed in the embodiments of this utility model;

[0027] Figure 7 This is a light path diagram of the light-transmitting panel disclosed in an embodiment of the present utility model;

[0028] Figure 8 This is a schematic diagram of the structure of the screen printing layer disclosed in an embodiment of this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 110-Housing, 120-Light source, 130-Lens, 131-Mounting plate, 132-Lens body, 140-Reflector cup, 141-Cup body, 1411-Light inlet, 1412-Light outlet, 1413-Prism-shaped reflective surface, 1414-Protruding prism, 1414a-First reflective surface, 1414b-Second reflective surface, 142-Carrier plate, 150-Light-transmitting panel, 151-Silicone printing layer, 152-Transparent light-emitting part, 160-Light mixing film. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] The technical solutions disclosed in the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0034] Please refer to Figures 1 to 7This 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 110, a light source 120, a lens 130, and a reflector 140. The housing 110 has a mounting cavity, within which the light source 120, lens 130, and reflector 140 can all be housed. The housing 110 provides protection for the light source 120, lens 130, and reflector 140, and also prevents light leakage from the light source 120. The housing 110 can be square, round, elliptical, or similar shapes. For example,... Figure 1 As shown, the housing 110 is square in shape, and a U-shaped mounting cavity is provided inside the housing 110. At least one end face of the housing 110 has an opening, through which the light source 120, lens 130, and reflector 140 can be mounted in the U-shaped mounting cavity. The light source 120, lens 130, and reflector 140 can be assembled with the inner wall of the housing 110 by means of adhesive bonding, snap-fit, bolt connection, etc.

[0035] Light source 120 may include incandescent lamps, halogen lamps, LED (Light Emitting Diode) light-emitting panels, etc. Figure 1 As shown, this utility model uses an LED light-emitting board as the light source 120, and the light source 120 is equipped with multiple LED lamp heads. In addition, a lighting driver is also provided in the mounting cavity of the housing 110. The lighting driver is electrically connected to the light source 120 to supply power to the light source 120. Since the light source 120 generates a lot of heat when it is working, a corresponding heat dissipation element can also be provided in the mounting cavity of the housing 110. The heat dissipation element is located in the area close to the light source 120, which can transfer the heat generated by the light source 120 to the outside of the housing 110 in a timely manner, so that the light source 120 can be kept at a more suitable operating temperature.

[0036] like Figure 1 and Figure 3 As shown, lens 130 is disposed within housing 110 and located on the light-emitting side of light source 120. Lens 130 can be assembled with housing 110 by means of adhesive bonding, bolt connection, snap-fit, etc. The number of lenses 130 can be one, two, or more, depending on the type of light source 120. For example, light source 120 is a plate-shaped structure with multiple LED lamp heads spaced apart on the plate-shaped structure, and each LED lamp head can be equipped with one lens 130. Lens 130 can be a convex lens, concave lens, etc., and can guide light, change the light emission angle and direction, and filter heterochromatic light and stray light emitted from light source 120.

[0037] It's important to note that the beam angle refers to the angle at which light rays diverge from the center line of the light source to the light-emitting surface of the luminaire. The designed beam angle varies depending on the type of luminaire. For example, the beam angle of spotlights is generally between 15° and 50°, while that of floodlights is generally between 60° and 120°. Taking a spotlight as an example, assuming its designed beam angle is 45°, the theoretical beam angle of the light emitted by the spotlight should be 0°-45°. Light rays with beam angles between 0° and 45° will form a preset illumination area. If the beam angle of some rays exceeds 45°, they will deviate from this preset illumination area, easily causing glare.

[0038] Based on the above, the lens 130 in this application actually refracts the portion of light that deviates from the preset illumination area, thereby reducing the exit angle of this portion of light and allowing it to uniformly illuminate the preset illumination area, thus reducing the glare problem of the lighting fixture. Of course, regarding the exit angle of the portion of light refracted by the lens 130, the above-mentioned exit angle greater than 45° is only an example. The specific angle can be determined according to the design exit angle of the lighting fixture. For example, if the design exit angle of the lighting fixture is 25°, then the lens 130 can refract light with an exit angle greater than 25°; similarly, if the design exit angle of the lighting fixture is 60°, then the lens 130 can refract light with an exit angle greater than 60°, so that it can be emitted within the range of the design exit angle.

[0039] After refraction by lens 130, the exit angle of light emitted from the light-emitting side of lens 130 can be effectively controlled. However, some light may still exit from the light-emitting side of lens 130 or from the assembly gap between lens 130 and light source 120 at a relatively large exit angle, and glare still exists. To further reduce the probability of glare, a reflector 140 can be provided on the light-emitting side of lens 130. It should be noted that the side of lens 130 closer to light source 120 is the light-incident side of lens 130, and the side of lens 130 farther from light source 120 is the light-emitting side of lens 130. Light emitted from light source 120 can be transmitted to reflector 140 through lens 130 or through the assembly gap between lens 130 and light source 120.

[0040] like Figure 1 , Figures 4 to 6As shown, the reflector cup 140 may include multiple cup bodies 141. The cup bodies 141 may be made of light-absorbing materials, such as ferrous metals, black pigments, carbon nanotube composites, dark plastics, and specific photosensitive materials. Each cup body 141 includes a light inlet 1411 and a light outlet 1412. The light inlet 1411 is close to the lens 130 and opposite to the light-emitting side of the lens 130. The light outlet 1412 of the cup body 141 is away from the lens 130. Figure 6 As shown, the inner wall of the cup body 141 is provided with multiple prismatic reflective surfaces 1413. The prismatic reflective surfaces 1413 can reflect some of the light entering the cup body 141 at least twice. This part of the light mainly refers to the light with a large light angle. This part of the light can come from the light-emitting side of the lens 130 or from the assembly gap between the lens 130 and the light source 120.

[0041] The light rays with a large exit angle entering the cup body 141 can be divided into two parts. After entering the cup body 141, the first part of the light rays will directly strike the light-absorbing material of the cup body 141 and be absorbed. The proportion of the first part of the light rays can be 85%-95%. The second part of the light rays will be directed towards the prismatic reflective surface 1413. The proportion of the second part of the light rays can be 5%-15%. After being reflected twice by the prismatic reflective surface 1413, the light rays will be emitted in a nearly parallel manner. The emitted light rays will strike the prismatic reflective surface 1413 on the opposite side of the cup body 141, repeating the above reflection process. During the multiple reflections, most of the second part of the light rays will be further absorbed by the cup body 141. Of course, a small portion of the light rays will be absorbed by structural components such as the shell 110. This can prevent the light rays with a large exit angle from being emitted from the light outlet 1412 of the cup body 141. Combined with the lens 130 mentioned above, it can further reduce the glare problem caused by the light rays with a large exit angle deviating from the preset illumination area. Furthermore, since the light is reflected many times within the cup body 141, the absorption rate of light with a larger emission angle can be further improved.

[0042] It should be noted that, taking a lighting fixture with a designed light emission angle of 45° as an example, the aforementioned light with a larger light emission angle can be light with an emission angle greater than 45°. Direct emission of such light can easily cause glare. For light with a smaller light emission angle (light with an emission angle no greater than 45°), it can be directly emitted from the light outlet 1412 of the cup body 141, without being affected by the side wall of the cup body 141 or the prismatic reflective surface 1413, thus ensuring the brightness of the lighting fixture.

[0043] As described above, the lighting fixture disclosed in this application improves upon related technologies. The disclosed lighting fixture includes a light source 120, a lens 130, and a reflector 140. The lens 130 is positioned on the light-emitting side of the light source 120 and can control the light emitted by the light source 120. The reflector 140 includes a cup body 141, which includes a light inlet 1411 and a light outlet 1412. The light inlet 1411 of the cup body is positioned opposite to the light-emitting side of the lens 120. The inner wall of the cup body 141 is provided with multiple prismatic reflective surfaces 141. 3. The prismatic reflective surface 1413 can reflect a portion of the light incident on the cup body at least twice. This portion of light mainly refers to light with a large light angle. During the at least two reflections, this portion of light can be absorbed as much as possible, thereby reducing the light output angle of the light emitted from the reflective cup 141. This allows the light emitted from the light source 120 to be evenly illuminated within the preset lighting area, thus avoiding the problem of glare caused by some light deviating from the preset lighting area and improving the lighting effect and anti-glare effect of the lighting fixture.

[0044] like Figures 4 to 6 As shown, the inner wall of the cup body 141 is provided with a plurality of protruding ridges 1414 circumferentially. The plurality of protruding ridges 1414 are connected to each other to form the aforementioned prismatic reflective surface 1413. Each protruding ridge 1414 includes a first reflective surface 1414a and a second reflective surface 1414b set at a preset angle, the preset angle being in the range of 80°-100°. In a specific structure, in two adjacent protruding ridges 1414, the second reflective surface 1414b of one protruding ridge 1414 is connected to the first reflective surface 1414a of the other protruding ridge 1414, thereby forming the aforementioned prismatic reflective surface 1413. The plurality of prismatic reflective surfaces 1413 are connected to each other to cover the circumference of the inner wall of the cup body 141, which can reflect light with large emission angles from various directions.

[0045] Combination Figure 6As shown, the first reflective surface 1414a and the second reflective surface 1414b are configured to reflect light incident on one of them between the two surfaces. Assuming that the light first enters the first reflective surface 1414a, after the first reflection by the first reflective surface 1414a, it will be reflected by the second reflective surface 1414b and then reflected a second time on the second reflective surface 1414b. After the two reflections, the light will be emitted in a nearly parallel manner. The emitted light will be directed towards the prismatic reflective surface 1413 on the opposite side of the cup body 141. The above reflection process is repeated, thereby preventing light with a large emission angle from being emitted from the light outlet 1412 of the cup body 141, thus reducing the emission angle of the light emitted from the light outlet 1412 of the cup body 141. It should be added that light can also be incident from the second reflective surface 1414b and reflected by the first reflective surface 1414a. The embodiments of this application do not limit the order of light reflection on the first reflective surface 1414a and the second reflective surface 1414b.

[0046] like Figure 6 As shown, in two adjacent convex ridges 1414, the angle between the second reflective surface 1414b of one convex ridge 1414 and the first reflective surface 1414a of the other convex ridge 1414 is in the range of 85°-95°. Within this angle range, the number of reflections of light rays incident on the prism reflective surface 1413 can be increased, which is beneficial to improving the light absorption efficiency.

[0047] The reflector cup 140 can be made of light-absorbing materials, such as ferrous metals, black pigments, carbon nanotube composites, dark plastics, and specific photosensitive materials.

[0048] like Figures 4 to 5 As shown, the reflector cup 140 may also include a carrier plate 142, with multiple cups 141 arranged at intervals along the length of the carrier plate 142. The cups 141 and the carrier plate 142 can be an integral structure or manufactured separately and then assembled together by means of bonding, snap-fitting, or other methods. It should be noted that the length of the carrier plate 142 matches the distribution of the light source 120, so that the light emitted by the light source 120 has a corresponding cup 141 to match it, thereby improving the coverage area of ​​the reflector cup 140.

[0049] In actual installation, such as Figure 1 As shown, the reflector cup 140 may include two carrier plates 142, each with multiple cups 141. The two carrier plates 142 are joined together and cover the light-emitting side of the lens 130. The design of using two carrier plates 142 avoids deformation problems caused by excessive length of the carrier plates 142.

[0050] like Figures 4 to 5As shown, the cup body 141 is cylindrical. The cross-sectional dimension of the light inlet 1411 of the cup body 141 is smaller than the cross-sectional dimension of the light outlet 1412 of the cup body 141. Preferably, the cross-sectional area of ​​the cup body 141 gradually increases from the light inlet 1411 to the light outlet 1412, forming an expanding trumpet shape. This design reduces glare while ensuring the illumination range of the light emitted from the cup body 141.

[0051] like Figure 1 As shown, lens 130 includes a mounting plate 131 and a plurality of lens bodies 132. The plurality of lens bodies 132 are spaced apart along the length direction of the mounting plate 131. The number of lens bodies 132 can be relative to the number of light emitters on the light source 120. For example, the light source 120 is an LED light-emitting panel, and the LED light-emitting panel is provided with a plurality of LED lamp heads. Correspondingly, each lamp head has at least one lens body 132 matched with it. The lens body 132 can be a TIR (Total Internal Reflection) lens.

[0052] like Figure 1 , Figure 3 and Figure 6 As shown, the lighting fixture may further include a light-transmitting panel 150, which may be made of materials such as acrylic or glass. The light-transmitting panel 150 covers the side of the reflector 140 facing away from the lens 130, and can be assembled with the housing 110 by means of bolts, snap-fits, or other methods. The light-transmitting panel 150 can protect the reflector 140, lens 130, and light source 120, and also improve the dustproof performance of the lighting fixture.

[0053] When the light emitted from the reflector 140 still has a large emission angle, the light-transmitting panel 150 can reflect or absorb this portion of the light with a large emission angle. Taking reflection as an example, Figure 7The light path diagram of the light-transmitting panel 150 is shown. The light-transmitting panel 150 can reflect light emitted from the reflector 141 at a large angle, thereby further reducing the probability of glare. Taking absorption as an example, a screen-printed layer 151 with cutouts can be provided on the surface of the light-transmitting panel 150. The screen-printed layer 151 can be attached to the surface of the light-transmitting panel 150 by adhesive or formed on the surface of the light-transmitting panel 150 by screen printing. The light-transmitting panel 150 forms a transparent light-emitting part 152 at the hollow position of the screen printing layer 151. The transparent light-emitting part 152 is disposed opposite to the light outlet 1412 of the reflector cup 141. The screen printing layer 151 can be used to block other light except the light emitted from the transparent light-emitting part 152. That is, among the light emitted from the light outlet 1412 of the reflector cup 141, a portion of the light with a larger light emission angle can be blocked by the screen printing layer 151, while a portion of the light with a smaller light emission angle can be emitted through the transparent light-emitting part 152.

[0054] like Figure 1 As shown, the lighting fixture may further include a light-mixing film 160, which is disposed between the light-transmitting panel 150 and the reflector 140. Preferably, the light-mixing film 160 can be a micro / nano light-mixing film, with a plurality of micro / nano protrusions on it. The light emitted from the reflector 140 can be fused by the light-mixing film 160, thereby improving the uniformity of the emitted light.

[0055] like Figure 1 As shown, the lens 130 and the reflector 140 can be assembled with the housing 110 by means of bolt connection, snap-fit, etc. In order to facilitate the installation of the lens 130 and the reflector 140, at least one of the lens 130 and the reflector 140 is provided with a snap-fit ​​part, and the housing 110 is provided with a snap-fit ​​mating part. The snap-fit ​​part can snap-fit ​​with the snap-fit ​​mating part to realize the snap-fit ​​between the lens 130 or the reflector 140 and the housing 110, thereby improving the convenience of assembly or disassembly.

[0056] In addition, the lighting fixture in this application can be a grid light, and an installation structure can be provided on the housing 110. The housing 110 is connected to the slide rail through the installation structure, thereby realizing the installation of the lighting fixture.

[0057] 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.

[0058] 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: Light source (120); A lens (130) is disposed on the light-emitting side of the light source (120); A reflector cup (140) includes a cup body (141), the cup body (141) includes a light inlet (1411) and a light outlet (1412), the light inlet (1411) is disposed opposite to the light outlet side of the lens (130), and the inner wall of the cup body (141) is provided with a plurality of prismatic reflective surfaces (1413), the prismatic reflective surfaces (1413) are configured to reflect at least twice a portion of the light incident on the cup body (141).

2. The lighting fixture according to claim 1, characterized in that, The inner wall of the cup body (141) is provided with a plurality of protruding ridges (1414) forming the rhomboid reflective surface (1413). The protruding ridges (1414) include a first reflective surface (1414a) and a second reflective surface (1414b) at a preset angle. The first reflective surface (1414a) and the second reflective surface (1414b) are configured to reflect light incident on one of them between them.

3. The lighting fixture according to claim 2, characterized in that, The angle between the second reflective surface (1414b) of the protrusion (1414) and the first reflective surface (1414a) of the adjacent protrusion (1414) ranges from 85° to 95°.

4. The lighting fixture according to claim 1, characterized in that, The reflector cup (140) is made of light-absorbing material.

5. The lighting fixture according to claim 1, characterized in that, The reflector cup (140) also includes a carrier plate (142), and a plurality of cup bodies (141) are arranged at intervals along the length direction of the carrier plate (142).

6. The lighting fixture according to claim 1, characterized in that, The cross-sectional dimension of the light inlet (1411) of the cup body (141) is smaller than the cross-sectional dimension of the light outlet (1412) of the cup body (141).

7. The lighting fixture according to claim 1, characterized in that, The lens (130) includes a mounting plate (131) and a plurality of lens bodies (132), the plurality of lens bodies (132) being spaced apart along the length direction of the mounting plate (131), and the lens body (132) being a total internal reflection lens.

8. The lighting fixture according to claim 1, characterized in that, It also includes a light-transmitting panel (150) disposed on the side of the reflector (140) away from the lens (130).

9. The lighting fixture according to claim 8, characterized in that, The light-transmitting panel (150) is provided with a screen printing layer (151) with a hollowed-out position. The light-transmitting panel (150) forms a transparent light-emitting part (152) in the hollowed-out position. The screen printing layer (151) is used to block other light except for the light emitted from the transparent light-emitting part (152).

10. The lighting fixture according to claim 8, characterized in that, It also includes a light mixing film (160), which is disposed between the light-transmitting panel (150) and the reflector (140).

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