Lighting Fixtures

Abstract

The present invention provides a lighting fixture, comprising: a housing assembly; a Rayleigh scattering plate, arranged on the housing assembly; a light-emitting assembly, the light-emitting assembly being arranged opposite to the Rayleigh scattering plate, the light-emitting assembly comprising a light-emitting portion and a total reflection lens for reducing the emission angle of a light beam emitted by the light-emitting portion, the light-emitting portion being arranged obliquely relative to the Rayleigh scattering plate, the total reflection lens being arranged at the light-emitting portion; and a first light-shielding portion, arranged between the Rayleigh scattering plate and the light-emitting assembly. The technical problem that the lighting fixture in the prior art cannot simulate the illumination effect of a blue sky in a natural state is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of lighting devices, and in particular to a lighting fixture. Background Art

[0002] At present, the light sources of existing lighting fixtures are mainly white light, yellow light and RGB color light, and the actual usage status is relatively monotonous.

[0003] However, when using lighting fixtures in the prior art, especially in some windowless environments (such as storage rooms, basements, conference rooms, etc.), although there are lighting sources, the lighting fixtures cannot simulate the effect of the blue sky in a natural state, which will give people a heavy sense of depression. Summary of the invention

[0004] The main purpose of the present invention is to provide a lighting fixture to solve the technical problem that the lighting fixtures in the prior art cannot simulate the illumination effect of the blue sky in a natural state.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a lighting fixture, comprising: a shell assembly; a Rayleigh scattering plate, which is arranged on the shell assembly; a light-emitting assembly, which is arranged opposite to the Rayleigh scattering plate, and the light-emitting assembly includes a light-emitting part and a total reflection lens for reducing the emission angle of a light beam emitted by the light-emitting part, the light-emitting part is arranged obliquely relative to the Rayleigh scattering plate, and the total reflection lens is arranged at the light-emitting part; and a first light-shielding part, which is arranged between the Rayleigh scattering plate and the light-emitting assembly.

[0006] Furthermore, the shell assembly includes: a base; a light output cover, the light output cover is arranged on the base, the light output cover has a first mounting opening and a second mounting opening arranged oppositely, the base is arranged at the first mounting opening, and the Rayleigh scattering plate is arranged at the second mounting opening.

[0007] Furthermore, the base includes: a bottom plate; a mounting portion, which is arranged on the bottom plate, the mounting portion is arranged protruding from the bottom plate, the mounting surface of the mounting portion is arranged obliquely relative to the Rayleigh scattering plate, and the light-emitting component is arranged on the mounting surface of the mounting portion.

[0008] Furthermore, there are multiple mounting parts, which are arranged on the base plate at intervals along a preset direction; there are multiple light-emitting components, which are arranged in a one-to-one correspondence with the multiple mounting parts, and each light-emitting component is arranged on a corresponding mounting part.

[0009] Furthermore, the first light shielding portion is arranged on at least a portion of the light emitting component, and a light shielding surface of the first light shielding portion is arranged perpendicular to a mounting surface of the mounting portion.

[0010] Furthermore, there are multiple light-emitting components, and the multiple light-emitting components are arranged at intervals along a preset direction to form a light-emitting array. The light-emitting array has a light-emitting side and a light-shielding side that are relatively arranged. The light-emitting side and the side wall of the light output cover are arranged at intervals to form an avoidance interval to prevent light emitted from the light-emitting side from passing through the avoidance interval to irradiate the side wall of the light output cover.

[0011] Furthermore, the lighting fixture further includes: a second shading portion, which is arranged in the avoidance interval, and the second shading portion is located on the light-emitting side, so as to shield the light emitted from the light-emitting side through the second shading portion.

[0012] Furthermore, the housing assembly also includes: a light emitting plate, which is arranged on the light emitting cover, the light emitting plate is located at the second installation opening, and the light emitting plate is located on a side of the Rayleigh scattering plate away from the base, so that light transmitted from the Rayleigh scattering plate is emitted through the light emitting plate.

[0013] Furthermore, a support platform and a first clamping structure are provided at the second mounting port, the support platform is located on a side of the first clamping structure close to the first mounting port, and the support platform is used to support the Rayleigh scattering plate; a second clamping structure adapted to the first clamping structure is provided on the light output plate, so that the light output plate can be installed on the light output cover through the cooperation of the first clamping structure and the second clamping structure.

[0014] Furthermore, the shell assembly also includes reinforcing ribs; reinforcing ribs are arranged on the base; and / or reinforcing ribs are arranged on the light output cover.

[0015] Furthermore, the installation cross-sectional area of ​​the first installation port is larger than the installation cross-sectional area of ​​the second installation port, and the light output cover includes a first side panel, a second side panel, a third side panel and a fourth side panel which are connected end to end in sequence, and the first side panel, the second side panel and the third side panel all extend in the vertical direction, and at least a portion of the fourth side panel is set at a predetermined angle to the vertical plane.

[0016] By applying the technical solution of the present invention, the light-emitting component and the Rayleigh scattering plate are arranged opposite to each other, so that the illumination effect of the blue sky can be simulated; at the same time, because the total reflection lens and the light shielding part can absorb the large-angle outgoing light, the illumination effect of the small-angle parallel light can be achieved, thereby better simulating the light illumination characteristics of sunlight. Therefore, the technical solution provided by the present invention can solve the technical problem that the lighting fixtures in the prior art cannot simulate the illumination effect of the blue sky in the natural state. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic structural diagram of a base and a light-emitting assembly provided in an embodiment of the present invention is shown;

[0019] Figure 2 A schematic diagram of installing a base and a light-emitting assembly according to an embodiment of the present invention is shown;

[0020] Figure 3 A schematic structural diagram of a light shielding portion and a light emitting component provided in an embodiment of the present invention is shown;

[0021] Figure 4 A schematic diagram of installing a light shielding portion and a light emitting assembly according to an embodiment of the present invention is shown;

[0022] Figure 5 A schematic structural diagram of a base and a light output cover provided in an embodiment of the present invention is shown;

[0023] Figure 6 A schematic diagram of installing a base and a light output cover according to an embodiment of the present invention is shown;

[0024] Figure 7 A schematic diagram of the structure of a lighting fixture provided in an embodiment of the present invention is shown;

[0025] Figure 8 A schematic structural diagram of a housing assembly and a power supply provided according to an embodiment of the present invention is shown;

[0026] Fig. 9 A cross-sectional view of a lighting fixture provided according to an embodiment of the present invention is shown;

[0027] Fig.10 An exploded view of a lighting fixture provided according to an embodiment of the present invention is shown;

[0028] Fig.11 The relationship between the setting distances between the light emitting portion and two adjacent shading plates provided according to an embodiment of the present invention is shown.

[0029] The above drawings include the following reference numerals:

[0030] 10. Shell assembly; 11. Base; 111. Bottom plate; 112. Mounting portion; 12. Light emitting cover; 121. First mounting port; 122. Second mounting port; 123. Support platform; 124. First clamping structure; 125. First side panel; 126. Second side panel; 127. Third side panel; 128. Fourth side panel; 13. Light emitting plate; 131. Second clamping structure; 14. Reinforcing rib; 20. Rayleigh scattering plate; 30. Light emitting assembly; 31. Light emitting portion; 32. Total reflection lens; 33. Connecting plate; 40. First light shielding portion; 50. Power supply. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0032] like Figures 1 to 11 As shown, the present embodiment provides a lighting fixture, which includes a housing assembly 10, a Rayleigh scattering plate 20, a light-emitting assembly 30 and a first light shielding portion 40. The Rayleigh scattering plate 20 is disposed on the housing assembly 10, the light-emitting assembly 30 is disposed opposite to the Rayleigh scattering plate 20, the light-emitting assembly 30 includes a light-emitting portion 31 and a total reflection lens 32 for reducing the emission angle of the light beam emitted by the light-emitting portion 31, the light-emitting portion 31 is tilted relative to the Rayleigh scattering plate 20, and the total reflection lens 32 is disposed at the light-emitting portion 31. The first light shielding portion 40 is disposed between the Rayleigh scattering plate 20 and the light-emitting assembly 30. Specifically, the light-emitting portion 31 here can be an LED lamp bead, and the lighting fixture also includes a power supply 50, and the light-emitting portion 31 is connected to the power supply 50.

[0033] By using the lighting fixture provided in this embodiment, by arranging the light emitting portion 31 and the Rayleigh scattering plate 20 at an angle, the light emitted through the Rayleigh scattering plate 20 can achieve the visual effect of a blue sky. At the same time, the emission angle of the light beam emitted by the light emitting portion 31 is reduced by a total reflector, and the large-angle emitted light in the light emitted by the light emitting portion 31 is eliminated by means of the first light shielding portion 40, so that the emission of messy large-angle light can be avoided to simulate the inclined and parallel light beams of sunlight. Therefore, the technical solution provided in this embodiment can solve the technical problem that the lighting fixture in the prior art cannot simulate the illumination effect of a blue sky in a natural state.

[0034] Specifically, the housing assembly 10 in the present embodiment includes a base 11 and a light emitting cover 12, the light emitting cover 12 is arranged on the base 11, the light emitting cover 12 has a first mounting port 121 and a second mounting port 122 arranged oppositely, the base 11 is arranged at the first mounting port 121, and the Rayleigh scattering plate 20 is arranged at the second mounting port 122. With such a setting, the spatial layout of the lighting fixture can be optimized so as to better form the lighting effect of the sky through the Rayleigh scattering plate 20. Specifically, the inner surface of the light emitting cover 12 in the present embodiment is provided with a black coating, through which the scattered light can be absorbed to ensure the parallel emission of the light path. At the same time, with the above-mentioned spatial layout, the simulation of the sense of distance can be completed.

[0035] Specifically, a first clamping portion is provided on the base 11, and a second clamping portion matched with the first clamping portion is provided on the light output cover 12. The base 11 is connected to the light output cover 12 through the cooperation of the first clamping portion and the second clamping portion, so as to facilitate assembly.

[0036] Specifically, the light emitting assembly 30 in this embodiment further includes a connecting plate 33, which may be a PCB board, on which a plurality of light emitting parts 31 are arranged, and each light emitting part 31 is provided with a corresponding total reflection lens 32. Specifically, the connecting plate 33 is a strip-shaped plate, and the light emitting assembly 30 is a strip-shaped structure.

[0037] In this embodiment, the base 11 includes a bottom plate 111 and a mounting portion 112, the mounting portion 112 is arranged on the bottom plate 111, the mounting portion 112 is arranged protruding from the bottom plate 111, the mounting surface of the mounting portion 112 is arranged obliquely relative to the Rayleigh scattering plate 20, and the light-emitting component 30 is arranged on the mounting surface of the mounting portion 112. With such a structural arrangement, it is convenient to make the light-emitting portion 31 and the Rayleigh scattering plate 20 obliquely arranged, so that the light-emitting portion 31 is fixed to a specific angle to ensure that the light path emits light at a preset angle, and it is also convenient for installation. Specifically, the light-emitting component 30 in this embodiment is a bar structure, and correspondingly, the mounting portion 112 is also a bar structure.

[0038] Specifically, there are multiple mounting parts 112 in this embodiment, and the mounting parts 112 are arranged on the bottom plate 111 at intervals along a preset direction. There are multiple light-emitting components 30, and the multiple light-emitting components 30 are arranged one-to-one with the multiple mounting parts 112, and each light-emitting component 30 is arranged on a corresponding mounting part 112. With such a structural arrangement, multiple light-emitting components 30 can be installed, which is convenient for installation. Specifically, the mounting part 112 in this embodiment can be a grid bracket structure, which is convenient for production, manufacturing and installation.

[0039] In this embodiment, the first light shielding portion 40 is disposed on at least a portion of the light emitting assembly 30 , and the light shielding surface of the first light shielding portion 40 is disposed perpendicular to the mounting surface of the mounting portion 112 . Specifically, the first light shielding portion 40 may be disposed on the connecting plate 33 .

[0040] Specifically, the first shading portion 40 may include a first shading plate, the side of the first shading plate close to the light emitting portion 31 forms a shading surface of the first shading portion 40, and the first shading plate is arranged perpendicular to the connecting plate 33. With such a structural arrangement, on the one hand, the first shading plate can absorb the outgoing light at a large angle, and on the other hand, the light emitting component 30 can be effectively shielded, thereby preventing the user from directly seeing these internal components when looking up from the bottom of the lamp, achieving the effect of "seeing the light but not the lamp" to a certain extent, improving the aesthetics, and avoiding the influence on the light output effect.

[0041] Alternatively, the first shading portion 40 includes a first shading plate and a second shading plate, the first shading plate and the second shading plate are vertically arranged, the second shading plate is fitted to the connecting plate 33, and the first shading plate is vertically arranged to the connecting plate 33. In this way, it can also absorb large-angle light and effectively block the light-emitting component 30.

[0042] Specifically, there are multiple light-emitting components 30 in this embodiment, and the multiple light-emitting components 30 are arranged at intervals along a preset direction to form a light-emitting array. The light-emitting array has a light-emitting side and a light-shielding side that are arranged oppositely. Specifically, the light-emitting side is a side whose end is the light-emitting component 30, and the light-shielding side is a side whose end is the light-shielding part. The light-emitting side is spaced apart from the side wall of the light-emitting cover 12 to form an avoidance interval to prevent the light emitted from the light-emitting side from passing through the avoidance interval and irradiating the side wall of the light-emitting cover 12.

[0043] Specifically, the lighting fixture in this embodiment further includes a second shading portion, which is arranged in the avoidance interval and is located on the light-emitting side, so as to shield the light emitted from the light-emitting side through the second shading portion. Specifically, the structure of the second shading portion can be the same as that of the first shading portion 40. With such a structural arrangement, it is possible to better prevent the light emitted by the light-emitting portion 31 from irradiating the side wall of the light-emitting cover 12, and better absorb the light emitted at a large angle.

[0044] In this embodiment, the housing assembly 10 further includes a light emitting plate 13, which is disposed on the light emitting cover 12, and is located at the second mounting port 122. The light emitting plate 13 is located on the side of the Rayleigh scattering plate 20 away from the base 11, so that the light emitted by the Rayleigh scattering plate 20 is emitted through the light emitting plate 13. Specifically, the light emitting plate 13 here can be a decorative window structure, so as to achieve a simulated window effect and improve the user's experience of being close to nature. The light emitting plate 13 can be pressed and fixed with the Rayleigh scattering plate 20, and a white coating can be provided on the inner side of the light emitting plate 13, and the white coating can achieve the effect of simulating the light from the skylight.

[0045] Specifically, a support platform 123 and a first clamping structure 124 are provided at the second mounting opening 122 of the present embodiment, the support platform 123 is located at a side of the first clamping structure 124 close to the first mounting opening 121, and the support platform 123 is used to support the Rayleigh scattering plate 20. A second clamping structure 131 adapted to the first clamping structure 124 is provided on the light emitting plate 13, so that the light emitting plate 13 is installed on the light emitting cover 12 through the cooperation of the first clamping structure 124 and the second clamping structure 131. With such a structural setting, the installation stability of the Rayleigh scattering plate 20 can be ensured, and assembly is convenient at the same time.

[0046] In order to improve the stability of the overall structure of the lighting fixture, the housing assembly 10 in this embodiment further includes a reinforcing rib 14. The reinforcing rib 14 may be provided on the base 11; or, the reinforcing rib 14 may be provided on the light output cover 12; or, the reinforcing rib 14 may be provided on both the base 11 and the light output cover 12. Preferably, in this embodiment, the reinforcing rib 14 may be provided on both the base 11 and the light output cover 12.

[0047] The base 11 is also provided with a mounting hole so that the steel wire rope can be passed through the mounting hole for easy installation and fixing.

[0048] like Fig.11 As shown, a right-angle triangle coordinate system (X axis, Y axis and Z axis) is established in the figure. The distance between the axis of the total reflection lens 32 of the light emitting component 30 and the light shielding portion of the light emitting component 30 is d1, and the distance between the total reflection lens 32 of the light emitting component 30 and the light shielding portion of another adjacent light emitting component 30 is d2, d1≥d2, so as to effectively block and absorb large-angle light.

[0049] In this embodiment, during installation, the first mounting opening 121 is used to be installed on the wall, and the mounting cross-sectional area of ​​the first mounting opening 121 is larger than the mounting cross-sectional area of ​​the second mounting opening 122, so that the stability of the setting can be improved and the center of gravity can be prevented from being easily offset. The light output cover 12 includes a first side plate 125, a second side plate 126, a third side plate 127 and a fourth side plate 128 connected end to end in sequence, and the first side plate 125, the second side plate 126 and the third side plate 127 are all extended in the vertical direction, and at least a portion of the fourth side plate 128 is set at a predetermined angle with the vertical plane. Specifically, at least a portion of the fourth side plate 128 in this embodiment is set parallel to the first light shielding plate. With such a structural setting, the light output cover 12 can be adapted to the internal structural setting and the structural appearance layout can be optimized. Specifically, the first side plate 125 and the third side plate 127 in this embodiment are arranged relative to each other, and the first side plate 125 and the third side plate 127 can both be trapezoidal plate structures.

[0050] The plane where the Rayleigh scatter plate 20 in this embodiment is located is used as a projection plane, and the projection of the light-emitting array on the projection plane may partially fall on the plate surface of the Rayleigh scatter plate 20, and partially fall outside the plate surface of the Rayleigh scatter plate 20. In addition, the Rayleigh scatter plate 20 involved in this embodiment may be made of plastic or glass, and nano scattering particles or Rayleigh scattering coating are doped in the plastic or glass.

[0051] Specifically, the light hood 12 in this embodiment can be made by 3D printing. Due to size limitations, the overall production exceeds the production range of the printer. Therefore, the light hood 12 can be disassembled into two parts, and then the two parts are overlapped and assembled. Since the photosensitive resin material of 3D printing is weak in strength, in order to improve the overall structural strength of the device, screw column holes are reserved on the surface to facilitate the installation of a reinforcement structure on the screw column holes. In this embodiment, a triangular rib is also provided on the side of the light hood 12 close to the light output plate 13 to further improve the strength of the structure.

[0052] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects: simulating the light illumination effect of the blue sky under natural conditions and improving the user experience.

[0053] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0054] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0055] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0056] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0057] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A lighting fixture, characterized in that: include: Housing assembly (10); A Rayleigh scattering plate (20) is arranged on the housing assembly (10); A light-emitting component (30), the light-emitting component (30) being arranged opposite to the Rayleigh scattering plate (20), the light-emitting component (30) comprising a light-emitting portion (31) and a total reflection lens (32) for reducing the emission angle of a light beam emitted by the light-emitting portion (31), the light-emitting portion (31) being arranged at an angle relative to the Rayleigh scattering plate (20), and the total reflection lens (32) being arranged at the light-emitting portion (31); A first light shielding portion (40) is arranged between the Rayleigh scattering plate (20) and the light emitting component (30); The first light shielding portion (40) comprises a first light shielding plate, and the side surface of the first light shielding plate close to the light emitting portion (31) forms a light shielding surface of the first light shielding portion (40).

2. The lighting fixture according to claim 1, characterized in that: The housing assembly (10) comprises: Base (11); A light output cover (12), the light output cover (12) being arranged on the base (11), the light output cover (12) having a first mounting opening (121) and a second mounting opening (122) which are arranged opposite to each other, the base (11) being arranged at the first mounting opening (121), and the Rayleigh scattering plate (20) being arranged at the second mounting opening (122).

3. The lighting fixture according to claim 2, characterized in that: The base (11) comprises: Bottom plate (111); The mounting portion (112) is arranged on the bottom plate (111); the mounting portion (112) is arranged to protrude from the bottom plate (111); the mounting surface of the mounting portion (112) is arranged to be inclined relative to the Rayleigh scattering plate (20); and the light-emitting component (30) is arranged on the mounting surface of the mounting portion (112).

4. The lighting fixture according to claim 3, characterized in that: There are a plurality of mounting portions (112), and the mounting portions (112) are arranged on the bottom plate (111) at intervals along a preset direction; there are a plurality of light-emitting components (30), and the plurality of light-emitting components (30) are arranged in a one-to-one correspondence with the plurality of mounting portions (112), and each light-emitting component (30) is arranged on a corresponding mounting portion (112).

5. The lighting fixture according to claim 3, characterized in that: The first light shielding portion (40) is arranged on at least a portion of the light emitting component (30), and a light shielding surface of the first light shielding portion (40) is arranged perpendicular to a mounting surface of the mounting portion (112).

6. The lighting fixture according to claim 2, characterized in that: There are a plurality of light-emitting components (30), and the plurality of light-emitting components (30) are arranged at intervals along a preset direction to form a light-emitting array, wherein the light-emitting array has a light-emitting side and a light-shielding side arranged opposite to each other, and the light-emitting side is arranged at intervals with the side wall of the light output cover (12) to form an avoidance interval, so as to prevent light emitted by the light-emitting side from passing through the avoidance interval and irradiating the side wall of the light output cover (12).

7. The lighting fixture according to claim 6, characterized in that: The lighting fixture also includes: The second light shielding portion is arranged in the avoidance interval, and the second light shielding portion is located on the light emitting side, so as to shield the light emitted from the light emitting side through the second light shielding portion.

8. The lighting fixture according to claim 2, characterized in that: The housing assembly (10) further comprises: A light emitting plate (13) is arranged on the light emitting cover (12); the light emitting plate (13) is located at the second mounting opening (122); the light emitting plate (13) is located on a side of the Rayleigh scattering plate (20) away from the base (11), so that light transmitted through the Rayleigh scattering plate (20) is emitted through the light emitting plate (13).

9. The lighting fixture according to claim 8, characterized in that: A support platform (123) and a first clamping structure (124) are provided at the second mounting opening (122); the support platform (123) is located on a side of the first clamping structure (124) close to the first mounting opening (121); the support platform (123) is used to support the Rayleigh scattering plate (20); and a second clamping structure (131) adapted to the first clamping structure (124) is provided on the light output plate (13), so that the light output plate (13) is installed on the light output cover (12) through the cooperation of the first clamping structure (124) and the second clamping structure (131).

10. The lighting fixture according to claim 2, characterized in that: The housing assembly (10) further comprises a reinforcing rib (14); The base (11) is provided with the reinforcing rib (14); and / or, The reinforcing rib (14) is provided on the light output cover (12).

11. The lighting fixture according to claim 2, characterized in that: The installation cross-sectional area of ​​the first installation opening (121) is greater than the installation cross-sectional area of ​​the second installation opening (122); the light output cover (12) comprises a first side panel (125), a second side panel (126), a third side panel (127) and a fourth side panel (128) which are connected end to end in sequence; the first side panel (125), the second side panel (126) and the third side panel (127) all extend in a vertical direction; at least a portion of the fourth side panel (128) is arranged at a predetermined angle to the vertical plane.

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