Lighting device and screen hanging light

Abstract

The utility model discloses a kind of lighting device and screen hanging lamp, and lighting device includes reflector, light source, light exit panel and light control lens;Refractor and light source are arranged along first direction, and reflector has the reflecting surface towards light source;Light control lens is located between light source and reflector, and covers light source;Light exit panel and light source are located at the same side of reflector, and light exit panel and light source are arranged along second direction, first direction and second direction intersect;Wherein, light emitted by light source is refracted to reflecting surface by light control lens, and is emitted by light exit panel after reflecting by reflecting surface, to form target illumination area in the direction of lighting device outside away from light source.The above scheme can solve the problem of poor use performance of lighting device.

Description

Technical Field

[0001] This utility model relates to the field of lighting device technology, and in particular to a lighting device and a screen hanging light. Background Technology

[0002] To illuminate the space in front of the screen, lighting fixtures are usually fixed at the top of the screen, illuminating the area in front of the screen so that users can work or study.

[0003] In related technologies, lighting devices include a light source and a diffuser plate. Light emitted from the light source is diffused by the diffuser plate to form an illuminated area. However, while the diffuser plate disperses the light emitted from the light source and can achieve some uniform illumination, it also causes light divergence, which can easily increase the amount of light hitting the screen, resulting in severe glare. Therefore, lighting devices in related technologies cause severe glare on the screen, leading to poor performance. Utility Model Content

[0004] This utility model discloses a lighting device and a screen hanging light to solve the problem of poor performance of lighting devices.

[0005] To solve the above problems, the present invention adopts the following technical solution: A lighting device includes a reflector, a light source, a light-emitting panel, and a light-controlling lens; The reflector and the light source are arranged along a first direction, and the reflector has a reflective surface facing the light source; the light-controlling lens is located between the light source and the reflector and covers the light source; the light-emitting panel and the light source are located on the same side of the reflector, and the light-emitting panel and the light source are arranged along a second direction, the first direction intersecting the second direction; The light emitted by the light source is refracted by the light-controlling lens and directed toward the reflective surface. After being reflected by the reflective surface, the light is emitted through the light-emitting panel to form a target illumination area in a direction away from the light source outside the lighting device.

[0006] A screen hanging light includes a fixing device and the aforementioned lighting device, wherein the fixing device is used to fix the lighting device to the top of the screen.

[0007] The technical solution adopted in this utility model can achieve the following beneficial effects: In the lighting device disclosed in this utility model, the light emitted by the light source is refracted by a light-controlling lens and then directed towards the reflective surface of a reflector. After being reflected by the reflective surface, the light is emitted through a light-emitting panel to form a target lighting area away from the light source outside the lighting device. The lighting device disclosed in this application precisely controls the emission angle of the light through a light-controlling lens and a reflector, so that most of the emitted light is transmitted in a direction away from the light source. This achieves an asymmetric forward-polarized light pattern design, which helps to reduce the light emitted towards the screen, thus reducing glare from the screen and improving the performance of the lighting device. Attached Figure Description

[0008] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a cross-sectional view of the lighting device disclosed in an embodiment of the present utility model; Figure 2 and Figure 3 This is a cross-sectional view of some components of the lighting device disclosed in an embodiment of the present utility model; Figure 4 This is a schematic diagram of the structure of the lighting device disclosed in the embodiment of this utility model; Figure 5 This is a schematic diagram of the structure of the screen hanging lamp disclosed in the embodiment of this utility model.

[0009] Explanation of reference numerals in the attached figures: 100 - Illumination device; 110 - Reflector; 111 - Reflecting surface; 111a - First reflective arc surface; 111b - Second reflective arc surface; 120 - Light source; 121 - Substrate; 121a - First surface; 121b - Second surface; 122 - Light-emitting unit; 130 - Light-emitting panel; 131 - Third surface; 132 - Fourth surface; 140 - Light-controlling lens; 141 - First light-distributing surface; 141a - First arc surface; 141b - Second arc surface; 142 - Second light-distributing surface; 142a - Third arc surface; 142b - Fourth arc surface; 151 - First optical cavity; 152 - Second optical cavity; Y - First direction; X - Second direction; W - Central optical axis; 200 - Fixture. Detailed Implementation

[0010] 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.

[0011] The technical solutions disclosed in the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0012] like Figures 1-4 As shown in the figure, this utility model embodiment discloses a lighting device 100, which includes a reflector 110, a light source 120, a light-emitting panel 130, and a light-controlling lens 140.

[0013] The reflector 110 and the light source 120 are arranged along the first direction Y. The reflector 110 has a reflective surface 111 facing the light source 120. Here, the reflective surface 111 refers to the surface of the reflector 110 that can reflect light. At this time, the reflective surface 111 on the reflector 110 is located on the side facing the light source 120. Of course, it can also be understood that the light-emitting side of the light source 120 faces the side where the reflector 110 is located. Optionally, the reflector 110 may include a reflective substrate and a reflective layer. In this case, the reflective layer may be provided on the side of the reflective substrate facing the light source 120. Here, the reflective layer forms the aforementioned reflective surface 111. The reflective layer can be deposited on the reflective substrate using processes such as electroplating and sputtering. Here, the reflective substrate can be made of materials such as metal or plastic. Of course, the reflector 110 can also be other structures, which are not limited herein. In addition, the light source 120 in the embodiments of this application can be a light-emitting structure such as a light-emitting diode, a laser diode, or a halogen lamp. Of course, the light source 120 can also be other light-emitting structures, which are not limited herein.

[0014] A light-controlling lens 140 is located between the light source 120 and the reflector 110, and covers the light source 120. The reflector 110, the light-controlling lens 140, and the light source 120 are stacked along the first direction Y. At this time, the light emitted from the light source 120 is refracted by the light-controlling lens 140 and then directed onto the reflecting surface 111 of the reflector 110. The light-controlling lens 140 can be a concave lens, a convex lens, or a combination of a concave lens and a convex lens.

[0015] The light-emitting panel 130 is a light-emitting component of the lighting device 100. Light is emitted from the light-emitting panel 130. The light-emitting panel 130 and the light source 120 are located on the same side of the reflector 110, and the light-emitting panel 130 and the light source 120 are arranged along the second direction X. The first direction Y intersects the second direction X. Optionally, the first direction Y can be the thickness direction of the lighting device 100, and the second direction X can be the width direction of the lighting device 100. Of course, the first direction Y and the second direction X can also be other intersecting directions, which are not limited herein.

[0016] In the specific working process, the light emitted by the light source 120 is refracted by the light control lens 140 and then directed to the reflective surface 111. After being reflected by the reflective surface 111, the light is emitted through the light-emitting panel 130 to form a target illumination area in a direction away from the light source 120 outside the lighting device 100.

[0017] In the embodiments disclosed in this application, the emission angle of light is precisely controlled by the light-controlling lens 140 and the reflector 110, so that most of the emitted light can be transmitted in a direction away from the light source 120, thereby achieving an asymmetric forward-polarized light pattern design, which helps to reduce the light emitted towards the screen, thus helping to reduce the glare generated by the screen, and thus helping to improve the performance of the lighting device 100.

[0018] Furthermore, in this embodiment, the light-controlling lens 140, through its refractive index distribution design, causes the central light rays of the light source 120 to diverge while the weaker light rays at the edges converge, thereby balancing the luminous flux at different angles. Secondly, through the optimized surface design of the reflector 110, obliquely incident light rays are reflected into parallel or uniformly divergent light rays, avoiding the risk of localized bright spots or dark areas. Therefore, in this application, the light-controlling lens 140 corrects the light intensity distribution within the field of view, and the reflector 110 reshapes the light field, thus forming a secondary light field modulation of "refraction + reflection." This minimizes the illuminance deviation of light in the target illumination area, ultimately achieving a uniform illumination effect in the target area.

[0019] In addition, the light-emitting panel 130 and the light source 120 are located on the same side of the reflector 110. At this time, a large anti-glare angle can be formed between the light source 120 and the light-emitting panel 130, thereby further improving the anti-glare performance of the lighting device 100.

[0020] Optionally, the light-emitting panel 130 described above can be made of materials such as transparent plastic or transparent glass. In order to further improve the light emission uniformity of the lighting device 100, a diffusion film can also be attached to the light-emitting panel 130, thereby further improving the light emission uniformity.

[0021] The reflective surface 111 in this application may be opposite only to the light source 120.

[0022] In another alternative embodiment, the reflective surface 111 may be disposed opposite to both the light source 120 and the light-emitting panel 130.

[0023] like Figure 2 As shown, the area where the light source 120 is located can be area A, and the area where the light-emitting panel 130 is located can be area B. At this time, through the light-controlling lens 140 and the reflector 110, the light emitted from the light-emitting panel 130 is directed as far as possible towards the side of area B away from area A. Therefore, the target illumination area is located on the side of area B away from area A. Specifically, the screen can be located in area A, while the user's desktop keyboard area can be located on the side of area B away from area A. Therefore, the light emitted from the lighting device 100 deviates from area A, thus avoiding the risk of screen glare. Simultaneously, it can create a target illumination area with high brightness and uniformity in the desktop keyboard area, thereby improving the lighting effect of the lighting device 100.

[0024] In another alternative scheme, the light emission range of the light source 120 can be within 120°. In this case, when the light emission range θ∈(-60°, 0°), after refraction by the light-controlling lens 140, the light rays are directed onto the reflector 110 closer to the boundary between areas A and B. Here, (-60°, 0°) refers to the angle of the negative half-axis. Therefore, it can also be understood that the light rays, after being reflected by the part corresponding to area A by the reflecting surface 111, are deflected towards the central optical axis W of the light source 120. The reflected portion of the light rays can be directly emitted from the light-emitting panel 130. Another portion of the light rays, after being reflected by the reflecting surface 111 in area A, is reflected a second time to the part of the reflector 110 located in area B and then emitted from the light-emitting panel 130. The light rays after the second reflection can propagate to a position in area B that is farther away from area A.

[0025] Furthermore, when the light emission range θ∈(0°, 60°) of the light source 120, after refraction by the light-controlling lens 140, the light is closer to the position in area B away from area A, and then reflected by the reflective surface 111 in the area B, enabling it to propagate to a farther region. Here, (0°, 60°) refers to the light emission angle of the light source 120 on the positive half-axis, at which point the light undergoes only one reflection. In this application, by precisely controlling the light emission range of the light source 120 in different half-axis zones, the light guiding accuracy is effectively improved, achieving a better light control effect.

[0026] In this embodiment, the light-controlling lens 140 can deflect the light emitted by the light source 120 towards one side of the light-emitting panel 130, so that the light can be reflected by the reflector 110 and propagated to a region further away from the light source 120, thereby further achieving the effect of asymmetric front polarization.

[0027] In an optional embodiment, the light-controlling lens 140 may have a first light-distributing surface 141 and a second light-distributing surface 142 disposed opposite to each other. The first light-distributing surface 141 may be located on the side of the light-controlling lens 140 facing the light source 120. The second light-distributing surface 142 may be located on the side of the light-controlling lens 140 facing the reflector 110. The first light-distributing surface 141 may be a concave arcuate surface facing the reflector 110. The second light-distributing surface 142 may be a convex arcuate surface facing the reflector 110.

[0028] In this design, the incident light first reaches the first light-distributing surface 141. Because the first light-distributing surface 141 is a concave arc, the curvature of the concave surface causes the light to diverge, which is beneficial for achieving a uniform light effect. At the same time, the diverged light enters the interior of the light-controlling lens 140 and then reaches the second light-distributing surface 142. The second light-distributing surface 142 is a convex arc. Because the curvature of the convex arc is greater, the light will converge significantly, thus deflecting towards the central axis of the light-controlling lens 140. Therefore, by using different surface designs for the first light-distributing surface 141 and the second light-distributing surface 142, the effects of uniform light and light control can be further achieved, thereby further improving the optical performance.

[0029] Further, the first light-distributing surface 141 may include a first arcuate surface 141a and a second arcuate surface 141b connected along the second direction X. In the direction from the light source 120 to the light-emitting panel 130, the distance between the light source 120 and the first arcuate surface 141a along the first direction Y gradually increases. The distance between the light source 120 and the first arcuate surface 141a along the first direction Y is the perpendicular distance between any point on the first arcuate surface 141a and the light source 120. The distance between the light source 120 and the second arcuate surface 141b along the first direction Y can gradually decrease. The distance between the light source 120 and the second arcuate surface 141b along the first direction Y can be the perpendicular distance between any point on the second arcuate surface 141b and the light source 120.

[0030] In this design, along the direction from the light source 120 to the light-emitting panel 130, the distance between the first light-distributing surface 141 and the light source 120 in the first direction Y first increases and then decreases. Therefore, the first light-distributing surface 141 effectively forms a "gradually enveloping" light-receiving surface for the light source 120, thus converging large-angle divergent light and preventing light escape, thereby improving light utilization. Simultaneously, it can also create different light control effects on both sides of the light source 120, further enhancing optical performance.

[0031] Similarly, the second light distribution surface 142 may include a third arcuate surface 142a and a fourth arcuate surface 142b connected along the second direction X. In the direction from the light source 120 to the light-emitting panel 130, the distance between the light source 120 and the third arcuate surface 142a along the first direction Y gradually increases, and the distance between the light source 120 and the fourth arcuate surface 142b along the first direction Y gradually decreases.

[0032] In this design, along the direction from the light source 120 to the light-emitting panel 130, the distance between the second light-distributing surface 142 and the light source 120 along the first direction Y increases and then decreases. Therefore, the second light-distributing surface 142 effectively forms a "gradually enveloping" light-emitting surface for the light source 120, thus enabling the dispersion of light at a large angle and preventing light escape, thereby improving light utilization. Simultaneously, it can also create different light control effects on both sides of the light source 120, further enhancing optical performance.

[0033] In another alternative embodiment, the connection point between the first arcuate surface 141a and the second arcuate surface 141b can be located on the side of the central optical axis W of the light source 120 facing the light-emitting panel 130. The rate of curvature change of the first arcuate surface 141a can be smaller than the rate of curvature change of the second arcuate surface 141b. The rate of curvature change here reflects the degree of curvature of the first arcuate surface 141a and the second arcuate surface 141b. The smaller the rate of curvature change, the smoother the surface. The larger the rate of curvature change, the greater the degree of curvature of the surface.

[0034] In the specific operation, the light from the light source 120 within its main emission range is controlled by the first arc-shaped surface 141a, while light at larger angles is controlled by the second arc-shaped surface 141b. The main emission range can be defined as θ∈(-60°, 60°). The light from the light source 120 within its main emission range is controlled by a surface with a low rate of curvature change. This surface is gentle, allowing for a smooth transition of light, thus avoiding excessive differences in light deflection angles and the risk of uneven light distribution due to uneven refracted light paths, thereby ensuring stable brightness in the central area. Within the large-angle emission range at the edges of the light source 120 (primarily between 60° and 180°), a surface with a high rate of curvature change is used for control. A higher rate of curvature change provides stronger directional control, enabling precise control of large-angle edge light.

[0035] In this scheme, the first light-distributing surface 141 stabilizes the central light through the region with a small rate of curvature change, and the first light-distributing surface 141 corrects the edges through the region with a large rate of curvature change. Therefore, by complementing the regions with small and large rates of curvature change of the first light-distributing surface 141, a more uniform and precise light control effect can be achieved, thereby further improving the lighting effect of the lighting device 100.

[0036] Similarly, the connection point between the third arcuate surface 142a and the fourth arcuate surface 142b is located on the side of the central optical axis W of the light source 120 facing the light-emitting panel 130. The rate of curvature change of the third arcuate surface 142a can be less than the rate of curvature change of the fourth arcuate surface 142b. The design function of this second light-distributing surface 142 is the same as the above scheme, so it will not be described in detail here.

[0037] In the above scheme, the light-controlling lens 140 can be connected to the reflector 110. At this time, a protruding bracket can be provided on the reflector 110, and the light-controlling lens 140 can be glued to the bracket on the reflector 110.

[0038] In another optional embodiment, the light source 120 may include a substrate 121 and a light-emitting unit 122. The substrate 121 is used to support the light-emitting unit 122 and to make the light-emitting unit 122 electrically connected to the power supply. Here, the substrate 121 can be a plate-like structure with circuitry. For example, the substrate 121 can be a circuit board. The light-emitting unit 122 is a light-emitting device, such as a diode. The light-emitting unit 122 can be disposed on the side of the substrate 121 facing the reflector 110. The substrate 121 and the light-emitting panel 130 are arranged along the second direction X as described above. The perpendicular distances between the first arcuate surface 141a, the second arcuate surface 141b, the third arcuate surface 142a, and the fourth arcuate surface 142b and the light source 130 can be their perpendicular distances to the substrate 121.

[0039] The light-controlling lens 140 can be connected to the substrate 121, and the first light-distributing surface 141 and the substrate 121 can form a first optical cavity 151, and the light-emitting unit 122 can be located inside the first optical cavity 151.

[0040] In this design, the light-controlling lens 140 can be connected to the substrate 121, thus avoiding the need for a bracket on the reflector 110 and simplifying the structure of the lighting device 100. Furthermore, the light-controlling lens 140 and the substrate 121 form a first optical cavity 151, which avoids the risk of large-angle light leakage, thereby improving light utilization efficiency and further enhancing luminous intensity.

[0041] In the above embodiments, the reflective surface 111 can be a plane.

[0042] In another alternative embodiment, the reflective surface 111 can be an arc-shaped structure recessed away from the light source 120. The reflective surface 111 may include a first reflective arc surface 111a and a second reflective arc surface 111b arranged along the second direction X. At least a portion of the light source 120 faces the first reflective arc surface 111a, and at least a portion of the light-emitting panel 130 faces the second reflective arc surface 111b. Here, the first reflective arc surface 111a may be located in the aforementioned region A. The second reflective arc surface 111b may be located in the aforementioned region B.

[0043] In the direction pointing from the light source 120 to the light-emitting panel 130, the distance between the light source 120 and the first reflective arc surface 111a gradually increases along the first direction Y. This distance along the first direction Y is the perpendicular distance between any point on the first reflective arc surface and the light source 120. The distance between the light source 120 and the second reflective arc surface 111b gradually decreases along the first direction Y. This distance along the first direction Y is the perpendicular distance between any point on the second reflective arc surface and the light source 120. Here, the perpendicular distance between the first and second reflective arc surfaces 111a and 111b and the light source 130 can be considered as the perpendicular distance between them and the aforementioned substrate 121.

[0044] In this scheme, the first reflective arc surface 111a can reflect most of the light from the light source 120, and the second reflective arc surface 111b can reflect the light reflected by the first reflective arc surface 111a twice, and can also reflect the large-angle light from the light source 120, which helps to further improve the control performance of light and the utilization efficiency of light.

[0045] Furthermore, the rate of curvature change of the first reflective surface 111a can be greater than that of the second reflective surface 111b. In this design, the different rates of curvature change of the first and second reflective surfaces 111a and 111b improve light control performance, thereby better achieving asymmetric reflection and further enhancing light control. In addition, the greater rate of curvature change of the first reflective surface 111a results in a larger light control angle for the light rays along the negative half-axis of the light source 130°, making it easier to reflect the light to the side of area B away from area A. The smaller rate of curvature change of the second reflective surface 111b, on the other hand, has a certain contraction effect on the light rays, ensuring that the light can be reflected to the side of area B away from area A. Therefore, different surface designs can further improve light control performance.

[0046] In the above embodiments, the lighting device 100 may also be provided with a mounting base or housing, and the reflector 110, the light source 120 and the light-emitting panel 130 may all be mounted on the mounting base or housing.

[0047] In another alternative embodiment, one side of the reflector 110 can be connected to the side of the light source 120 opposite to the light-emitting panel 130, and the other side of the reflector 110 can be connected to the side of the light-emitting panel 130 opposite to the light source 120. In this case, the reflecting surface 111, the light source 120, and the light-emitting panel 130 can form a second optical cavity 152, and the light-controlling lens 140 can be located within the second optical cavity 152. Specifically, the reflector 110 is connected to the side of the substrate 121 of the light source 120 opposite to the light-emitting panel 130.

[0048] In this design, the reflector 110, the light source 120, and the light-emitting panel 130 are connected end to end to form an enclosing frame. At this time, the reflector 110 and the light source 120 also serve as the housing of the lighting device 100. Therefore, the ring-shaped reflector 110, the light source 120, and the light-emitting panel 130, which are connected end to end, form a single cavity module lighting device 100, thereby reducing the number of components of the lighting device 100, realizing integrated design, simplifying the structure of the lighting device 100, and thus helping to reduce the manufacturing cost of the lighting device 100.

[0049] In the above scheme, the lighting device 100 can be a strip structure. In this case, the extension direction of the lighting device 100 is along a third direction (not shown in the figure), where the third direction can be the length direction of the lighting device 100. The first direction Y can be the height or thickness direction of the lighting device 100, and the second direction X can be the width direction of the lighting device 100. In this case, the light source 120 and the light-emitting panel 130 are arranged along the width direction of the lighting device 100. When the lighting device 100 is a strip structure, the light source 120, the light-controlling lens 140, the reflector 110, and the light-emitting panel 130 can all be strip structures extending along a third direction.

[0050] Of course, the lighting device 100 is not limited to a strip structure, but can also be other shapes, which are not limited in this article.

[0051] In another optional embodiment, at least one of the plane containing the light source 120 and the plane containing the light-emitting panel 130 may be parallel to the second direction X. Here, the plane containing the light source 120 can be understood as the plane formed by the light-emitting centers of all the light-emitting units 122 on the light source 120, or the surface of one side of the substrate 121 of the light source 120. The plane containing the light-emitting panel 130 refers to the plane formed by the effective light-emitting area of ​​the light-emitting panel 130, or it can also be understood as the surface of one side of the light-emitting panel 130.

[0052] In this scheme, at least one of the plane where the light source 120 is located and the plane where the light-emitting panel 130 is located is parallel to the arrangement direction of the light source 120 and the light-emitting panel 130, thereby increasing the angle between the plane where the light source 120 is located and the plane where the light-emitting panel is located. This avoids the risk that the light source 120 will be emitted directly from the light-emitting panel 130 without passing through the reflector 110, and thus helps to further increase the anti-glare angle.

[0053] Furthermore, the plane containing the light source 120 can be parallel to the plane containing the light-emitting surface, or the substrate 121 of the light source 120 can be parallel to the light-emitting panel 130. In this case, the geometric relationship between the light source 120 and the light-emitting panel 130 is horizontal and collinear, thus further increasing the anti-glare angle and thereby further improving the anti-glare performance of the lighting device 100.

[0054] In other embodiments, the substrate 121 of the light source 120 may be higher than the light-emitting panel 130 along the first direction Y, or lower than the light-emitting panel 130 along the first direction Y.

[0055] In another alternative embodiment, the substrate 121 may have a first surface 121a and a second surface 121b disposed opposite to each other, the first surface 121a facing the reflector 110, and the light-emitting unit 122 disposed on the first surface 121a. The light-emitting panel 130 has a third surface 131 and a fourth surface 132 disposed opposite to each other, the third surface 131 facing the reflector 110. The first surface 121a may be flush with the third surface 131, and the second surface 121b may be flush with the fourth surface 132.

[0056] In this design, the substrate 121 and the light-emitting panel 130 are arranged parallel and flush, which helps to reduce the height dimension of the lighting device 100, thereby achieving miniaturization of the lighting device 100. In addition, there is no height difference between the substrate 121 and the light-emitting panel 130, thus avoiding the risk of direct glare caused by the protrusion of the substrate 121.

[0057] In the embodiments disclosed in this application, the light-controlling lens 140 and reflector 110 achieve a good asymmetric forward polarization effect, thereby effectively reducing the light received on the screen and thus reducing indirect glare. Simultaneously, by designing a special placement structure for the light source 120 and the light-emitting panel 130, the anti-glare angle can be increased, which helps reduce direct glare. Therefore, the technical solution of this application can reduce both direct and indirect glare, thus achieving a good anti-glare effect for the lighting device 100.

[0058] like Figure 5As shown, based on the lighting device 100 disclosed in the embodiments of this application, the embodiments of this application also disclose a screen hanging light, which includes the lighting device 100 described in any of the embodiments above.

[0059] The lighting device 100 disclosed in this application also includes a fixing device 200 for fixing the lighting device 100 to the top of the screen. The fixing device 200 can be connected to the housing of the lighting device 100, or the lighting device 100 can be directly connected to the reflector 110 of the lighting device 100. Optionally, the fixing device 200 may include a first fixing part and a second fixing part connected together. The first fixing part is used to fix the lighting device 100, and the second fixing part is used to connect the screen. The first fixing part and the second fixing part can be a clamping structure, or the first fixing part and the second fixing part have corresponding snap-fit ​​grooves, and the screen and the lighting device 100 can be snapped into the corresponding snap-fit ​​grooves. The fixing device 200 in this application can also have other structures, which are not limited here.

[0060] The lighting device 100 disclosed in this application is not limited to use in screen hanging lights, but can also be used in table lamps, night lights and other lighting devices.

[0061] 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.

[0062] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A lighting device, characterized in that, It includes a reflector (110), a light source (120), a light-emitting panel (130), and a light-controlling lens (140). The reflector (110) and the light source (120) are arranged along a first direction (Y), and the reflector (110) has a reflective surface (111) facing the light source (120); the light-controlling lens (140) is located between the light source (120) and the reflector (110) and covers the light source (120); the light-emitting panel (130) and the light source (120) are located on the same side of the reflector (110), and the light-emitting panel (130) and the light source (120) are arranged along a second direction (X), and the first direction (Y) intersects the second direction (X); The light emitted by the light source (120) is refracted by the light-controlling lens (140) and directed toward the reflective surface (111). After being reflected by the reflective surface (111), the light is emitted through the light-emitting panel (130) to form a target illumination area in a direction away from the light source (120) outside the lighting device (100).

2. The lighting device according to claim 1, characterized in that, The light-controlling lens (140) has a first light-distributing surface (141) and a second light-distributing surface (142) arranged opposite to each other. The first light-distributing surface (141) is located on the side of the light-controlling lens (140) facing the light source (120). The first light-distributing surface (141) is an arc-shaped surface that is concave in the direction of the reflector (110), and the second light-distributing surface (142) is an arc-shaped surface that is convex in the direction of the reflector (110).

3. The lighting device according to claim 2, characterized in that, The first light-distributing surface (141) includes a first arcuate surface (141a) and a second arcuate surface (141b) connected along the second direction (X). In the direction from the light source (120) to the light-emitting panel (130), the distance between the light source (120) and the first arcuate surface (141a) gradually increases along the first direction (Y), while the distance between the light source (120) and the second arcuate surface (141b) gradually decreases along the first direction (Y); and / or, The second light-distributing surface (142) includes a third arcuate surface (142a) and a fourth arcuate surface (142b) connected along the second direction (X). In the direction from the light source (120) to the light-emitting panel (130), the distance between the light source (120) and the third arcuate surface (142a) along the first direction (Y) gradually increases, and the distance between the light source (120) and the fourth arcuate surface (142b) along the first direction (Y) gradually decreases.

4. The lighting device according to claim 3, characterized in that, The connection point between the first arcuate surface (141a) and the second arcuate surface (141b) is located on the side of the central optical axis (W) of the light source (120) facing the light-emitting panel (130), and the rate of curvature change of the first arcuate surface (141a) is less than the rate of curvature change of the second arcuate surface (141b); and / or, The connection between the third arcuate surface (142a) and the fourth arcuate surface (142b) is located on the side of the central optical axis (W) of the light source (120) facing the light-emitting panel (130), and the curvature change rate of the third arcuate surface (142a) is less than that of the fourth arcuate surface (142b).

5. The lighting device according to claim 2, characterized in that, The light source (120) includes a substrate (121) and a light-emitting unit (122). The light-emitting unit (122) is disposed on the side of the substrate (121) facing the reflector (110). The substrate (121) and the light-emitting panel (130) are arranged along the second direction (X). The light-controlling lens (140) is connected to the substrate (121), the first light-distributing surface (141) and the substrate (121) form a first optical cavity (151), and the light-emitting unit (122) is located in the first optical cavity (151).

6. The lighting device according to claim 1, characterized in that, The reflective surface (111) is an arc-shaped structure that is recessed away from the light source (120). The reflective surface (111) includes a first reflective arc surface (111a) and a second reflective arc surface (111b) arranged along the second direction (X). At least a portion of the light source (120) faces the first reflective arc surface (111a), and at least a portion of the light-emitting panel (130) faces the second reflective arc surface (111b). In the direction from the light source (120) to the light-emitting panel (130), the distance between the light source (120) and the first reflective arc surface (111a) along the first direction (Y) gradually increases, and the distance between the light source (120) and the second reflective arc surface (111b) along the first direction (Y) gradually decreases.

7. The lighting device according to claim 6, characterized in that, The rate of curvature change of the first reflective surface (111a) is greater than the rate of curvature change of the second reflective surface (111b).

8. The lighting device according to claim 6, characterized in that, One side of the reflector (110) is connected to the side of the light source (120) away from the light-emitting panel (130), and the other side of the reflector (110) is connected to the side of the light-emitting panel (130) away from the light source (120). The reflective surface (111), the light source (120) and the light-emitting panel (130) form a second optical cavity (152), and the light-controlling lens (140) is located in the second optical cavity (152).

9. The lighting device according to claim 1, characterized in that, At least one of the plane containing the light source (120) and the plane containing the light-emitting panel (130) is parallel to the second direction (X).

10. A screen hanging light, characterized in that, It includes a fixing device (200) and a lighting device (100) according to any one of claims 1 to 9, the fixing device (200) being used to fix the lighting device (100) to the top of the screen.

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