Illuminating lamp

Abstract

The illumination lamp comprises a shell, at least two first light sources distributed at intervals, at least two second light sources distributed at intervals, a first light guide part and a second light guide part, the first light sources, the second light sources, the first light guide part and the second light guide part are all arranged on the shell, the first light guide part is provided with a first light inlet face and a first reflection face, and the second light guide part is provided with a second light inlet face and a second reflection face. Each first light source is opposite to the first light incident surface, the first reflecting surface comprises a first curved surface, and the first curved surface is recessed towards the interior of the first light guide part; the second light guide part is provided with a second incident surface and a second reflecting surface, each second light source is opposite to the second incident surface, the second reflecting surface comprises a second curved surface, the second curved surface is sunken towards the interior of the second light guide part, and the curvature of the first curved surface is larger than that of the second curved surface; a first illumination range is formed when the first light sources emit light, and a second illumination range is formed when the second light sources emit light. In this way, the lighting range and the lighting effect of the lighting lamp can be adjusted to adapt to different scene requirements.

Description

Technical Field

[0001] The present application belongs to the field of lighting technology, and specifically relates to a lighting fixture. Background Art

[0002] As people's quality of life improves, the quality of products used in daily life also improves accordingly. In the field of lighting technology, the lighting effect of lamps is also valued. However, the lighting range of lamps in the prior art is constant, the applicable scene is single, and the lighting effect of lamps cannot be adjusted according to different scene requirements. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a lighting fixture that can solve the problem in the related art that the lighting range cannot be adjusted by the lighting fixture.

[0004] The embodiment of the present application provides a lighting fixture, comprising a housing, at least two first light sources, at least two second light sources, a first light guide and a second light guide, wherein each of the first light sources, each of the second light sources, the first light guide and the second light guide are all arranged in the housing,

[0005] The first light guide member is provided with a first light incident surface and a first reflection surface, the first light sources are spaced apart and respectively face the first light incident surface, the first reflection surface comprises a first curved surface, and the first curved surface is concave toward the interior of the first light guide member;

[0006] The second light guide member is provided with a second light incident surface and a second reflection surface, the second light sources are spaced apart and respectively face the second light incident surface, the second reflection surface comprises a second curved surface, the second curved surface is recessed toward the inside of the second light guide member, and the curvature of the first curved surface is greater than the curvature of the second curved surface;

[0007] When each of the first light sources is in a light-emitting state, the light emitted by each of the first light sources is sequentially transmitted through the first light incident surface and reflected by the first reflection surface before being emitted to form a first illumination range;

[0008] When each of the second light sources is in a light-emitting state, the light emitted by each of the second light sources is sequentially transmitted through the second light incident surface and reflected by the second reflection surface before being emitted to form a second illumination range, which is larger than the first illumination range.

[0009] In the embodiment of the present application, when the lighting fixture controls only the first light source to emit light, the first lighting range formed by the light passing through the first light guide is the minimum lighting range, and when the lighting fixture controls only the second light source to emit light, the second lighting range formed by the light passing through the second light guide is the maximum lighting range. Therefore, relying on the structure of the reflecting surfaces of the first light guide and the second light guide, different lighting ranges can be formed when the first light source emits light and when the second light source emits light, thereby adjusting the lighting range and lighting effect of the lighting fixture to adapt to different scene requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic diagram of the structure of the lighting fixture disclosed in the embodiment of the present application;

[0011] Figure 2 is an exploded view of the lighting fixture disclosed in the embodiment of the present application;

[0012] Figure 3 is a schematic diagram of the light path of the light emitted by the first light source disclosed in the embodiment of the present application when passing through the first light guide plate;

[0013] Figure 4 is a schematic diagram of a first curved surface disclosed in an embodiment of the present application;

[0014] Figure 5 is a schematic diagram of a second curved surface disclosed in an embodiment of the present application;

[0015] Figure 6 It is a structural schematic diagram of the light emitting plate and the housing disclosed in the embodiment of the present application;

[0016] Figure 7 is a light distribution curve diagram when only the first light source emits light according to the embodiment of the present application;

[0017] Figure 8 This is a light distribution effect diagram when only the first light source emits light according to the embodiment of the present application;

[0018] Fig. 9 is a light distribution curve diagram when only the second light source emits light according to the embodiment of the present application;

[0019] Fig.10 This is a light distribution effect diagram when only the second light source emits light according to the embodiment of the present application;

[0020] Fig.11 is a light distribution curve diagram when a part of the first light source and a part of the second light source disclosed in the embodiment of the present application emit light;

[0021] Fig.12 This is a light distribution effect diagram when a part of the first light source and a part of the second light source disclosed in the embodiment of the present application emit light;

[0022] Fig.13is a schematic diagram of the arrangement of the first light source disclosed in the embodiment of the present application;

[0023] Fig.14 is a schematic diagram of the arrangement of the second light source disclosed in the embodiment of the present application;

[0024] Fig.15 It is a partial structural schematic diagram of the lighting fixture disclosed in the embodiment of the present application;

[0025] Fig.16 is a schematic diagram of the light path of the light emitted by the first light source when passing through the first light incident surface disclosed in one embodiment of the present application;

[0026] Fig.17 is a schematic diagram of the light path of light emitted by a first light source when passing through a first light incident surface disclosed in another embodiment of the present application;

[0027] Fig.18 is a structural schematic diagram of the third light incident surface of the light output plate disclosed in the embodiment of the present application;

[0028] Fig.19 is a schematic diagram of a first protrusion structure disclosed in an embodiment of the present application;

[0029] Fig. 20 is a schematic diagram of the optical path of light passing through the first protrusion structure disclosed in the embodiment of the present application;

[0030] Fig.21 is a schematic diagram of a second protrusion structure disclosed in an embodiment of the present application;

[0031] Figure 22-Figure 23 It is a schematic diagram of the light path of the light passing through the second protrusion structure disclosed in the embodiment of the present application.

[0032] Description of reference numerals:

[0033] 100-shell,

[0034] 210-first light source, 220-second light source,

[0035] 300 - first light guide plate, 310 - first reflective surface, 311 - first curved surface, 320 - first light incident surface, 321 - first concave surface,

[0036] 400-second light guide plate, 411-second curved surface,

[0037] 500-light emitting plate, 510-third light incident surface, 511-central area, 512-edge area, 520-light emitting surface, 600-reflecting sheet,

[0038] 710-first protruding structure, 720-second protruding structure,

[0039] 800-Metal heat sink. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0041] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0042] The lighting fixture provided in the embodiment of the present application is described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0043] Please refer to Figure 1-Figure 23 The lighting fixture disclosed in the embodiment of the present application includes a shell 100, at least two first light sources 210, at least two second light sources 220, a first light guide and a second light guide, wherein the shell 100 serves as an installation base for each first light source 210, each second light source 220, the first light guide and the second light guide, and each first light source 210, each second light source 220, the first light guide and the second light guide are all arranged on the shell 100.

[0044] Optionally, the housing 100 includes a frame, and the lighting fixture further includes a metal heat sink 800, which is mounted on the frame, and each of the first light sources 210, the first light guide, and the second light guide are mounted on the metal heat sink 800, so that each component is indirectly disposed on the housing 100. Further optionally, the metal heat sink 800 may be an aluminum heat sink.

[0045] The first light guide is provided with a first light incident surface 320 and a first reflection surface 310, and each first light source 210 is distributed at intervals, and each first light source 210 is respectively opposite to the first light incident surface 320, so as to ensure that the light emitted by the first light source 210 can pass through the first light incident surface 320 and enter the interior of the first light guide. This embodiment does not limit the structure of the first light incident surface 320. The first reflection surface 310 includes a first curved surface 311, and the first curved surface 311 is concave toward the interior of the first light guide, that is, the first curved surface 311 is a concave surface, so that the first curved surface 311 is a convex reflection, which has a divergent effect on the light, so the light incident on the first light guide forms a certain illumination range after being reflected by the first reflection surface 310.

[0046] The second light guide is provided with a second light incident surface and a second reflection surface, and the second light sources 220 are spaced apart and opposite to the second light incident surface, respectively, to ensure that the light emitted by the second light source 220 can pass through the second light incident surface and enter the interior of the second light guide. The present embodiment does not limit the structure of the second light incident surface. The second reflection surface includes a second curved surface 411, and the second curved surface 411 is recessed toward the interior of the second light guide, that is, the second curved surface 411 is a concave surface. Thus, the second curved surface 411 is a convex reflection, which has a divergent effect on the light, so the light incident on the second light guide can form a certain illumination range after being reflected by the second reflection surface. Moreover, referring to Figure 4 and Figure 5 As shown, the curvature of the first curved surface 311 is greater than the curvature of the second curved surface 411. Due to the different structures of the first reflecting surface 310 and the second reflecting surface, the illumination range formed by the light emitted by the first light source 210 through the first light guide member is smaller than the illumination range formed by the light emitted by the second light source 220 through the second light guide member.

[0047] refer to Figure 7 The light distribution curve diagram when only the first light source 210 emits light and Figure 8 The light distribution effect diagram shown is when only the first light source 210 is emitting light. When each first light source 210 is in the emitting state, the light emitted by each first light source 210 is sequentially transmitted through the first light incident surface 320 and reflected by the first reflecting surface 310 and then emitted to form a first lighting range.

[0048] refer to Fig. 9 The light distribution curve diagram when only the second light source 220 emits light and Fig.10 As shown in the light distribution effect diagram when only the second light source 220 is emitting light, when each second light source 220 is in a light-emitting state, the light emitted by each second light source 220 is sequentially transmitted through the second light incident surface and reflected by the second reflection surface and then emitted to form a second illumination range, and the second illumination range is larger than the first illumination range.

[0049] In the embodiment of the present application, when the lighting fixture controls only the first light source 210 to emit light, the first lighting range formed by the light passing through the first light guide is the minimum lighting range, and when the lighting fixture controls only the second light source 220 to emit light, the second lighting range formed is the maximum lighting range. Therefore, relying on the structure of the reflecting surfaces of the first light guide and the second light guide, different lighting ranges can be formed when the first light source emits light and when the second light source emits light, thereby adjusting the lighting range and lighting effect of the lighting fixture to adapt to different scene requirements.

[0050] In an optional embodiment, the lighting fixture further includes a control element, which is respectively connected to the first light sources 210 and the second light sources 220 in communication. When the control element controls the first light sources 210 to emit light, the lighting fixture forms a first lighting range; when the control element controls the second light sources 220 to emit light, the lighting fixture forms a second lighting range, that is, the lighting range of the lighting fixture is the first lighting range or the second lighting range. In this way, the user can control the control element as needed to adjust the lighting range of the lighting fixture in time, so that the lighting range of the lighting fixture is more suitable for the use scenario requirements. Optionally, the control element can be a control switch, which can be electrically connected to the first light sources 210 and the second light sources 220.

[0051] In a further optional embodiment, reference Fig.11 and Fig.12 The light distribution curve diagram and light distribution effect diagram when a part of the first light source 210 and a part of the second light source 220 are respectively shown, when the control element controls at least one of the first light sources 210 and at least one of the second light sources 220 to be in a light-emitting state, the light emitted by at least one of the first light sources 210 is sequentially transmitted through the first light incident surface 320 and reflected from the first reflection surface 310 and then emitted, and the light emitted by at least one of the second light sources 220 is sequentially transmitted through the second light incident surface and reflected from the second reflection surface and then emitted, so as to form a third lighting range, the third lighting range is larger than the first lighting range, and the third lighting range is smaller than the second lighting range. In this way, the lighting fixture can not only have the first lighting range and the second lighting range, but also form a lighting range between the first lighting range and the second lighting range.

[0052] By adopting this embodiment, the control element controls the first light source 210 and the second light source 220 to emit light in combination, so as to expand the adjustable range of the lighting range of the lighting fixture to meet more different scene requirements.

[0053] All that needs to be explained is, Figure 7 , Fig. 9 and Fig.11In the light distribution curve shown in the figure, the ordinate represents the light intensity distribution. With the origin of the coordinate as the center, the luminous intensity in each direction is marked with a vector. Connecting the endpoints of the vectors forms the light intensity distribution curve corresponding to each figure. Therefore, through Figure 7 , Fig. 9 and Fig.11 , we can know the lighting range of the lighting fixture under different light source lighting conditions.

[0054] In an alternative embodiment, reference Figure 4 and Figure 5 As shown, the first curved surface 311 and the second curved surface 411 are both part of a spherical surface, the first reflecting surface 310 and the second reflecting surface use the outer side of the spherical surface to reflect light, the radius of the first curved surface 311 is R1, the convex height of the first curved surface 311 is h1, the radius of the second curved surface 411 is R2, the convex height of the second curved surface 411 is h2, and the ratio of R1 to h1 is less than the ratio of R2 to h2. In the case of R1=R2, h1 is greater than h2, that is, the convex height of the first curved surface 311 is greater than the convex height of the second curved surface 411, indicating that the degree of deviation of the first curved surface 311 from the plane is greater than the degree of deviation of the second curved surface 411 from the plane, and the curvature of the first curved surface 311 is greater than the curvature of the second curved surface 411. In this way, the first reflecting surface 310 and the second reflecting surface adopt spherical curved surfaces, and the reflection phenomenon of light obeys the law of reflection of light. The spherical curved surface has the same physical properties for light beams projected onto the spherical surface in any direction. Moreover, after the spherical curved surface reflects the light, the light is effectively diverged, which expands the field of view and is conducive to the lighting fixture to form a certain lighting range.

[0055] Of course, in other embodiments, the first curved surface 311 and the second curved surface 411 may also be aspherical curved surfaces, or non-arc curved surfaces.

[0056] In an optional embodiment, the first reflective surface 310 may be provided with only one first curved surface 311. Figure 3 As shown, the first reflecting surface 310 has a first compound eye region, and the first compound eye region is provided with a plurality of first curved surfaces 311 connected in sequence. Optionally, the first compound eye region is provided with a plurality of first curved surfaces 311 along the first direction, and a plurality of first curved surfaces 311 along the second direction, wherein the first direction and the second direction are perpendicular to each other, and the first direction and the second direction are respectively parallel to the plane where the first reflecting surface 310 is located. In this embodiment, the first reflecting surface 310 adopts a compound eye array form, so the first reflecting surface 310 can divide the light passing through the first light incident surface 320 into a plurality of small light beams, and the reflection degree of each first curved surface 311 to each small light beam is basically the same, so the light is more uniform after being reflected by the first reflecting surface 310.

[0057] In an optional embodiment, the second reflecting surface may be provided with only one second curved surface 411. In another embodiment, the second reflecting surface has a second compound eye region, and the second compound eye region is provided with a plurality of second curved surfaces 411 connected in sequence. Optionally, the second compound eye region is provided with a plurality of third curved surfaces along a third direction, and a plurality of fourth curved surfaces along a fourth direction, wherein the third direction is perpendicular to the fourth direction, and the third direction and the fourth direction are respectively parallel to the plane where the second reflecting surface is located. In this embodiment, the second reflecting surface adopts a compound eye array form, so the second reflecting surface can divide the light passing through the second light incident surface into a plurality of small light beams, and the reflection degree of each second curved surface 411 to each small light beam is basically the same, so the light is more uniform after being reflected by the second reflecting surface.

[0058] In an optional embodiment, the first light guide member is a first light guide plate 300, the first light guide plate 300 has a first surface and a second surface arranged opposite to each other, and a first edge surface, the first edge surface is located between the first surface and the second surface, the first edge surface is a first light incident surface 320, the first surface is a first reflection surface 310, and the first light sources 210 are arranged at intervals along the extension direction of the first edge surface; the second light guide member is a second light guide plate 400, the second light guide plate 400 has a third surface and a fourth surface arranged opposite to each other, and a second edge surface, the second edge surface is located between the third surface and the fourth surface, the second edge surface is a second light incident surface, the third surface is a second reflection surface, and the second light sources 220 are arranged at intervals along the extension direction of the second edge surface, and the first light guide plate 300 and the second light guide plate 400 are arranged side by side, and the plane where the first light guide plate 300 is located and the plane where the second light guide plate 400 is located are coplanar.

[0059] In another embodiment, the first light guide plate 300 and the second light guide plate 400 are stacked. Figure 1 As shown, the first light source 210 and the second light source 220 are arranged in sequence, and the second light source 220 and the second light guide plate 400 are located on the side of the first light source 210 and the first light guide plate 300 facing the light output, so the light emitted by the first light source 210 is emitted after passing through the first light guide plate 300 and the second light guide plate 400, and the light emitted by the second light source 220 is emitted after passing through the second light guide plate 400. It should be noted that although the light emitted by the first light source 210 passes through the second light guide plate 400, the light directly passes through the second light guide plate 400, and the second reflection surface of the second light guide plate 400 does not reflect the light emitted by the first light source 210, so the second light guide plate 400 has little effect on the first lighting range. With this embodiment, the first light guide plate 300 and the second light guide plate 400 are stacked so that the occupied area of ​​the light guide plate is small, which is conducive to reducing the volume of the housing 100 used to install each light guide plate and each light source, and realizing the miniaturization of the lighting fixture.

[0060] Optionally, the first light guide plate 300 and the second light guide plate 400 are both circular structures, such as Fig.13 and Fig.14 As shown, each first light source 210 and each second light source 220 are distributed in a circular array, and all first light sources 210 are divided into three parts, namely A1, A2, and A3, and all second light sources 220 are divided into three parts, namely B1, B2, and B3. The central angle of each part is 120°. When the first light guide plate 300 and the second light guide plate 400 are stacked, A1 is opposite to B1, A2 is opposite to B2, and A3 is opposite to B3. At least one of A1, A2, and A3 can be controlled to distribute light with at least one of B1, B2, and B3 to form the required lighting range. Of course, all first light sources 210 can also be divided into four or more parts, and all second light sources 220 can also be divided into four or more parts.

[0061] In an optional embodiment, reference Fig.16 As shown, the first edge surface is a plane, that is, the first edge surface is neither a concave surface nor a convex surface, and the structure of the first edge surface is the same as the structure of the edge of the first reflective surface 310. Optionally, when the first light guide plate 300 is a rectangular structure, the first edge surface is an annular surface formed by sequentially connecting four planes; when the first light guide plate 300 is a circular structure, the first edge surface is a toroidal surface.

[0062] In another embodiment, reference Fig.15 and Fig.17 As shown, the first edge surface includes a first concave surface 321, and the first concave surface 321 bulges away from the first light source 210. Specifically, the distance between the intersection of the light emitted by two adjacent first light sources 210 and the light emitting surface of the first light source 210 is H, Fig.17 The H shown is less than Fig.16 The H shown indicates that setting the first edge surface as the first concave surface 321 can reduce H. With this embodiment, the light emitted by the first light source 210 will diverge when passing through the first concave surface 321, so that the distance H between the intersection of the light emitted by two adjacent first light sources 210 and the light-emitting surface of the first light source 210 is reduced, and the light mixing is more uniform. Therefore, the first concave surface 321 can stretch the incident light and reduce the graininess of the edge of the lighting fixture. Optionally, the first concave surface 321 can be a curved surface or other concave curved surface.

[0063] In an optional embodiment, the second edge surface is a plane, that is, the second edge surface is neither a concave surface nor a convex surface, and the structure of the second edge surface is the same as the structure of the edge of the second reflective surface. Optionally, when the second light guide plate 400 is a rectangular structure, the second edge surface is an annular surface formed by connecting four planes in sequence; when the second light guide plate 400 is a circular structure, the first edge surface is a circular ring surface.

[0064] In another embodiment, the second edge surface includes a second concave surface, and the second concave surface is convex in a direction away from the second light source 220. In this way, the light emitted by the second light source 220 will diverge when passing through the second concave surface, so that the distance between the intersection of the light emitted by two adjacent second light sources 220 and the light emitting surface of the second light source 220 is reduced, and the light is mixed evenly. Therefore, the second concave surface can stretch the incident light and reduce the graininess of the edge of the lighting fixture. Optionally, the second concave surface can be a curved surface or other concave curved surface.

[0065] In an optional embodiment, the first edge surface may be provided with only one first concave surface 321. In another embodiment, referring to Fig.15 and Fig.17 As shown, the first edge surface includes a plurality of first concave surfaces 321 connected in sequence, and each first concave surface 321 is arranged along the extension direction of the first edge surface. In this embodiment, the first edge surface is provided with a plurality of first concave surfaces 321, so the first edge surface can stretch the light emitted by the plurality of first light sources 210, so that the distance between the intersection of the light sources emitted by two adjacent first light sources 210 at a plurality of positions and the light emitting surface of the first light source 210 is reduced, the light mixing is more uniform, and the graininess of the edge of the lighting fixture is further reduced.

[0066] In an optional embodiment, the second edge surface may be provided with only one second concave surface. In another embodiment, the second edge surface includes a plurality of second concave surfaces connected in sequence, and the second concave surfaces are arranged along the extension direction of the second edge surface. In this embodiment, the second edge surface is provided with a plurality of second concave surfaces, so the second edge surface can stretch the light emitted by the plurality of second light sources 220, so that the distance between the intersection of the light sources emitted by two adjacent second light sources 220 at a plurality of positions and the light emitting surface of the second light source 220 is reduced, the light mixing is more uniform, and the graininess of the edge of the lighting fixture is further reduced.

[0067] In an optional embodiment, if Figure 1As shown, the lighting fixture further includes a light emitting plate 500 and a reflective sheet 600, both of which are disposed on the housing 100, and the reflective sheet 600, the first light guide plate 300, the second light guide plate 400 and the light emitting plate 500 are stacked in sequence. With this embodiment, the light of the first light source 210 that is not reflected by the first reflective surface 310 and the light of the second light source 220 that is not reflected by the second reflective surface are reflected to the side where the light emitting plate 500 is located by means of the reflective sheet 600, so as to ensure that the light reflected by the first light source 210 and the second light source 220 can be emitted from the side where the light emitting plate 500 is located, thereby realizing single-sided lighting and avoiding poor lighting effect caused by emitting light from both sides. In an embodiment in which the lighting fixture includes a metal heat sink 800, a light emitting plate 500 and a reflective sheet 600 are arranged on the metal heat sink 800. The metal heat sink 800 includes a main body and a bending portion. The main body has the same structure as the first light guide plate 300 and the second light guide plate 400. The bending portion is perpendicular to the plane where the main body is located. Each first light source 210 and each second light source 220 are arranged on the bending portion. The reflective sheet 600 is arranged on the main body. The main body, the reflective sheet 600, the first light guide plate 300, the second light guide plate 400 and the light emitting plate 500 are stacked in sequence.

[0068] Of course, in other embodiments, the lighting fixture may not be provided with the reflective sheet 600 , that is, both sides of the first light guide plate 300 and the second light guide plate 400 can emit light respectively.

[0069] In an optional embodiment, the lighting fixture further includes a light emitting plate 500, the first light guide plate 300, the second light guide plate 400 and the light emitting plate 500 are stacked in sequence, and the light emitting plate 500 has a third light incident surface 510 and a light emitting surface 520 that are arranged opposite to each other, and the third light incident surface 510 faces the second light guide plate 400, that is, the light passing through the second light guide plate 400 enters the light emitting plate 500 from the third light incident surface 510, and finally exits from the light emitting surface 520. Moreover, the third light incident surface 510 is provided with an anti-glare structure, refer to Figure 6 and Fig.18 As shown, the third light incident surface 510 has a central area 511 and an edge area 512, the edge area 512 surrounds the central area 511, and the anti-glare structure is located in the edge area 512. With this embodiment, the anti-glare structure can stretch the light located in the edge area 512, and can expand the angle of the light after entering the third light incident surface 510, so as to avoid excessive brightness in the central area 511 causing glare to the user's naked eyes, which is conducive to more uniform light mixing.

[0070] Of course, in other embodiments, the third light incident surface 510 of the light output plate 500 may be a textured surface or a frosted surface, so as to improve the light output effect, that is, the third light incident surface 510 is not provided with an anti-glare structure.

[0071] In an optional embodiment, the anti-glare structure includes a plurality of protruding structures, the arrangement direction of the protruding structures is the same as the arrangement direction of the first light source 210 or the second light source 220, and each protruding structure extends from the edge of the light output plate 500 to the center of the light output plate 500. Optionally, the first light guide plate 300, the second light guide plate 400 and the light output plate 500 are all circular structures, the first light source 210, the second light source 220 and the protruding structures are arranged in a circular array, and each protruding structure is strip-shaped, and the protruding structure extends radially along the light output plate 500; Fig.18 As shown, the central area 511 of the third light incident surface 510 is a circular area with a radius of r1, and the edge area 512 of the third light incident surface 510 is a circular area with an inner diameter of r1 and an outer diameter of r2. With this embodiment, the protruding structure can block the light incident on the third light incident surface 510, so that the light emitted by the light output plate 500 is softer, further reducing glare defects, and facilitating more uniform light mixing.

[0072] Of course, in other embodiments, the anti-glare structure may also adopt other structures other than the protruding structure, as long as the incident angle of the light is enlarged when the light passes through the third light incident surface 510 .

[0073] In an optional embodiment, the plurality of protrusion structures include a plurality of first protrusion structures 710 and a plurality of second protrusion structures 720, each of the first protrusion structures 710 is distributed along the direction in which the first light source 210 or the second light source 220 is arranged to form a first annular structure, each of the second protrusion structures 720 is distributed along the direction in which the first light source 210 or the second light source 220 is arranged to form a second annular structure, and the first annular structure is located at the periphery of the second annular structure, each of the first protrusion structures 710 is arranged adjacent to each other, and each of the second protrusion structures 720 is arranged at intervals. In this embodiment, the first protrusion structures 710 are arranged relatively closely, and the second protrusion structures 720 are arranged relatively sparsely. When light passes through the light emitting plate 500, part of the light is blocked by the first protrusion structures 710, and part of the light is mixed and diffused by the second protrusion structures 720, so that the light emitted by the light emitting plate 500 is softer, further reducing glare defects, and eliminating the granularity generated by the first light guide plate 300 and the second light guide plate 400.

[0074] Optionally, the first protruding structure 710 and the second protruding structure 720 are respectively distributed along the circumference of the light output plate 500, referring to Figure 19-20 As shown, the first protrusion structure 710 is an arc-shaped protrusion, and a depression is formed between two adjacent first protrusion structures 710, through which the incident light can be stretched, so that the incident angle of the light after passing through the third light incident surface 510 is expanded; Figure 21-23As shown, the second protrusion structure 720 is a sawtooth protrusion, which has two intersecting surfaces, the angle between the two surfaces is greater than 0° and less than 180°, and the light is emitted to both sides after passing through the two surfaces. The anti-glare structure is not limited to the above two different shapes of protrusions, and can also be a single shape of protrusions, that is, the first protrusion structure 710 and the second protrusion structure 720 are both sawtooth protrusions or arc protrusions.

[0075] Of course, in other embodiments, the edge region 512 of the third light incident surface 510 may only be provided with the second protruding structure 720 or the first protruding structure 710 , that is, the light mixing effects at different positions of the edge region 512 tend to be consistent.

[0076] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A lighting fixture, characterized in that: The invention comprises a housing (100), at least two first light sources (210), at least two second light sources (220), a first light guide and a second light guide, wherein each of the first light sources (210), each of the second light sources (220), the first light guide and the second light guide are all arranged in the housing (100). The first light guide member is provided with a first light incident surface (320) and a first reflection surface (310), the first light sources (210) are distributed at intervals, and the first light sources (210) are respectively opposite to the first light incident surface (320), the first reflection surface (310) comprises a first curved surface (311), and the first curved surface (311) is concave toward the inside of the first light guide member; The second light guide member is provided with a second light incident surface and a second reflection surface, the second light sources (220) are distributed at intervals, and the second light sources (220) are respectively opposite to the second light incident surface, the second reflection surface comprises a second curved surface (411), the second curved surface (411) is recessed toward the inside of the second light guide member, and the curvature of the first curved surface (311) is greater than the curvature of the second curved surface (411); When each of the first light sources (210) is in a light-emitting state, the light emitted by each of the first light sources (210) is sequentially transmitted through the first light incident surface (320) and reflected by the first reflection surface (310) before being emitted to form a first illumination range; When each of the second light sources (220) is in a light-emitting state, the light emitted by each of the second light sources (220) is sequentially transmitted through the second light incident surface and reflected by the second reflection surface before being emitted to form a second illumination range, which is larger than the first illumination range.

2. The lighting fixture according to claim 1, characterized in that: The lighting fixture further comprises a control element, wherein the control element is respectively connected to communicate with each of the first light sources (210) and each of the second light sources (220). When the control element controls at least one of the first light sources (210) and at least one of the second light sources (220) to be in a light-emitting state, the light emitted by at least one of the first light sources (210) is sequentially transmitted through the first light incident surface (320) and reflected through the first reflection surface (310) and then emitted, and the light emitted by at least one of the second light sources (220) is sequentially transmitted through the second light incident surface and reflected through the second reflection surface and then emitted, so as to form a third illumination range, wherein the third illumination range is larger than the first illumination range and smaller than the second illumination range.

3. The lighting fixture according to claim 1, characterized in that: The first curved surface (311) and the second curved surface (411) are both parts of a sphere, the radius of the first curved surface (311) is R1, the convex height of the first curved surface (311) is h1, the radius of the second curved surface (411) is R2, the convex height of the second curved surface (411) is h2, and the ratio of R1 to h1 is smaller than the ratio of R2 to h2.

4. The lighting fixture according to claim 1, characterized in that: The first reflecting surface (310) has a first compound eye region, and the first compound eye region is provided with a plurality of first curved surfaces (311) connected in sequence; And / or, the second reflecting surface has a second compound eye region, and the second compound eye region is provided with a plurality of second curved surfaces (411) connected in sequence.

5. The lighting fixture according to claim 1, characterized in that: The first light guide member is a first light guide plate (300), the first light guide plate (300) having a first surface and a second surface arranged opposite to each other, and a first edge surface, the first edge surface being located between the first surface and the second surface, the first edge surface being the first light incident surface (320), the first surface being the first reflection surface (310), and the first light sources (210) being arranged at intervals along an extension direction of the first edge surface; The second light guide member is a second light guide plate (400), the first light guide plate (300) and the second light guide plate (400) are stacked, the second light guide plate (400) has a third surface and a fourth surface arranged opposite to each other, and a second edge surface, the second edge surface is located between the third surface and the fourth surface, the second edge surface is the second light incident surface, the third surface is the second reflection surface, and each of the second light sources (220) is arranged at intervals along the direction in which the second edge surface extends.

6. The lighting fixture according to claim 5, characterized in that: The first edge surface comprises a first concave surface (321), and the first concave surface (321) convex in a direction away from the first light source (210); And / or, the second edge surface comprises a second concave surface, and the second concave surface is convex in a direction away from the second light source (220).

7. The lighting fixture according to claim 6, characterized in that: The first edge surface comprises a plurality of first concave surfaces (321) connected in sequence, and each of the first concave surfaces (321) is arranged along an extension direction of the first edge surface; The second edge surface includes a plurality of second concave surfaces connected in sequence, and the second concave surfaces are arranged along an extension direction of the second edge surface.

8. The lighting fixture according to claim 5, characterized in that: The lighting fixture further comprises a light emitting plate (500) and a reflective sheet (600), wherein the light emitting plate (500) and the reflective sheet (600) are both arranged on the housing (100), and the reflective sheet (600), the first light guide plate (300), the second light guide plate (400) and the light emitting plate (500) are stacked in sequence.

9. The lighting fixture according to claim 5, characterized in that: The lighting fixture further comprises a light emitting plate (500), wherein the first light guide plate (300), the second light guide plate (400) and the light emitting plate (500) are stacked in sequence, and the light emitting plate (500) comprises a third light incident surface (510) and a light emitting surface (520) which are arranged opposite to each other, the third light incident surface (510) faces the second light guide plate (400), and the third light incident surface (510) is provided with an anti-glare structure, the third light incident surface (510) comprises a central area (511) and an edge area (512), the edge area (512) surrounds the central area (511), and the anti-glare structure is located in the edge area (512).

10. The lighting fixture according to claim 9, characterized in that: The anti-glare structure comprises a plurality of first protruding structures (710) and a plurality of second protruding structures (720); the arrangement direction of the first protruding structures (710) and the arrangement direction of the second protruding structures (720) are the same as the arrangement direction of the first light sources (210) or the second light sources (220); each of the first protruding structures (710) and each of the second protruding structures (720) respectively extend in a direction from an edge of the light output plate (500) to a center of the light output plate (500); Each of the first protruding structures (710) is distributed along the direction in which the first light source (210) or the second light source (220) is arranged to form a first annular structure, and each of the second protruding structures (720) is distributed along the direction in which the first light source (210) or the second light source (220) is arranged to form a second annular structure, and the first annular structure is located on the periphery of the second annular structure, and each of the first protruding structures (710) is adjacent to each other, and each of the second protruding structures (720) is spaced apart.

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