Lighting device

Abstract

The utility model provides a lighting device. The lighting device comprises a shell, a lampshade, a light source plate and a limiting slope. The lampshade covers the front side of the shell, and a cavity is defined by the lampshade and the shell. The light source plate is arranged in the cavity. The lampshade and / or the light source plate and the shell are clamped and fixed through the clamping jaws. The limiting slope is at least arranged on one of the lampshade / light source plate and the shell, the extending direction of the limiting slope is inclined to the front-back direction, and the limiting slope is used for abutting against the other one of the lampshade / light source plate and the shell.

Description

Technical Field

[0001] The utility model relates to the technical field of lighting, in particular to a lighting device. Background Art

[0002] The prior art provides a lighting device, referring to Figure 1 , includes a shell 101, a light source board 103 located inside the shell 101, and a lampshade 102 connected to the shell. Screws 104 pass through the openings on the light source board 103 and the screw columns on the shell 101 to fix the light source board 103 inside the shell 101. Since there is a necessary gap (assembly tolerance) between the openings on the light source board 103 and the screw columns on the shell 101 for assembly, the fixed position of the light source board 103 is easily offset. Since there is also a necessary gap between the lampshade 102 and the shell 101 for assembly, the fixed position of the lampshade 102 is easily offset. The offset of the light source board 103 and the lampshade 102 may cause poor light distribution consistency and poor lighting effect. In addition, in the above-mentioned prior art, using screws to fix the light source board 103 increases the number of components and increases the assembly cost.

[0003] The prior art CN217154122U provides another lighting device structure. Similarly, since screws are used to fix the light source plate, there are problems of poor light distribution consistency, poor lighting effect, increased number of components, and increased assembly costs. Summary of the invention

[0004] In view of the above problems, the present invention provides a lighting device to at least solve or alleviate some of the problems existing in the prior art.

[0005] The utility model provides a lighting device, comprising: a housing, a lampshade, a light source board and a limiting inclined surface. The lampshade is arranged on the front side of the housing, and is enclosed with the housing to form a chamber. The light source board is arranged in the chamber. The lampshade and / or the light source board are fixed to the housing by clamping claws. The limiting inclined surface is at least arranged on one side of the lampshade / light source board and the housing, and the extending direction of the limiting inclined surface is inclined to the front-back direction, and is used to abut against the other side of the lampshade / light source board and the housing.

[0006] According to the lighting device provided by the present invention, since the lampshade and / or the light source board and the housing are fixed by clamping claws, the number of parts used for fixing is reduced, thereby reducing the assembly cost. After the lampshade and / or the light source board are fixed by clamping claws with the housing through the limiting inclined plane, the lampshade and / or the light source board can obtain a good fixing effect in the x-axis, y-axis and z-axis directions, thereby improving the light distribution consistency and enhancing the lighting effect.

[0007] In the lighting device of an optional technical solution of the present invention, the claw is arranged on the shell.

[0008] In the lighting device of the optional technical solution of the present invention, the limiting inclined surface is arranged on the shell.

[0009] In the lighting device of the optional technical solution of the present invention, the limiting inclined surface is arranged on the claws, and there are at least two claws, which are arranged on the shell in a form in which the limiting inclined surfaces face each other or face away from each other.

[0010] In the lighting device of the optional technical solution of the present invention, the housing includes a light source board support portion. The front end surface of the light source board support portion abuts against the rear side board surface of the light source board to support the light source board. The claw extends forward from the front end surface of the light source board support portion and passes through the through hole on the light source board, and the limiting inclined surface abuts against the light source board from the front side of the light source board and the front end surface from the rear side of the light source board.

[0011] According to the above preferred technical solution, when the light source board and the shell are fixed by a pair of claws, the limiting inclined surface at the rear end of the claws and the front end face of the light source board support portion can clamp the light source board from the front and rear sides with almost no gap, so that the light source board can obtain a better fixing effect in the x-axis, y-axis and z-axis directions. In addition, since the light source board abuts against the front end face of the light source board support portion, that is, the light source board and the shell are in contact in a face-to-face manner, it is beneficial to the heat dissipation of the light source board.

[0012] In the lighting device of an optional technical solution of the present invention, the shell includes a platform portion, the platform portion is arranged behind the light source board in parallel and spaced apart from the light source board, and the light source support portion extends forward from the platform portion.

[0013] In the lighting device of the optional technical solution of the present invention, the through hole is located at the center of the light source board, and a pair of claws are arranged back to back on the light source board support part and pass through the through hole together.

[0014] According to the above preferred technical solution, by making a pair of claws pass through the through hole located in the center of the light source board together, it is helpful to define the center of the light source board, so that the light source board can be fixed in the center.

[0015] In the lighting device of the optional technical solution of the present invention, there are two through holes, and a pair of claws are evenly arranged around the center circumference of the light source plate and pass through the two through holes respectively.

[0016] According to the above preferred technical solution, by evenly arranging a pair of claws around the center of the light source board and clamping with the light source board, it is helpful to define the center of the light source board so that the light source board can be fixed in the center.

[0017] The pair of claws are evenly arranged around the center of the light source board, which means that the pair of claws are evenly arranged on the circumference of a circle with an arbitrary radius and the center of the light source board as the center.

[0018] In the lighting device of an optional technical solution of the present invention, the light source board supporting portion is arranged corresponding to the outer edge of the light source board.

[0019] According to the above preferred technical solution, since the light source board support part is arranged corresponding to the outer edge of the light source board, the light source support part occupies less space in the middle of the housing for installing electronic components.

[0020] In the lighting device of the optional technical solution of the present invention, the distance between the end of the limiting slope close to the front end face and the front end face is d1, the distance between the end of the limiting slope away from the front end face and the front end face is d2, the thickness of the light source board is d, d1 <d<d2。

[0021] According to the above preferred technical solution, it is helpful to ensure that the limiting inclined surface at the rear end of the clamping claw and the front end surface of the light source board support part can clamp the light source board from the front and rear sides respectively with almost no gap, so that the center of the light source board is not easily offset.

[0022] In the lighting device of the optional technical solution of the present invention, the limiting inclined surface is evenly arranged around the center circumference of the lampshade / light source plate in a continuous or segmented manner.

[0023] According to the above preferred technical solution, by making the limiting inclined surface evenly arranged around the center of the lampshade / light source board, it is conducive to limiting the center of the lampshade / light source board, so that the lampshade / light source board can be fixed in the center. When the center of the light source board and the center of the lampshade are effectively fixed in the center of the housing, the center of the lampshade and the center of the light source board are unified, that is, aligned in the front-to-back direction, so as to provide more accurate piping light distribution and lighting effects, and improve the lighting effect.

[0024] The limiting slope is evenly arranged around the center of the lampshade / light source board, which means that the limiting slope is evenly arranged in a continuous or segmented form on the circumference of a circle with an arbitrary radius and the center of the lampshade / light source board as the center.

[0025] In the lighting device of the optional technical solution of the present invention, the clamping claw is further provided with a guiding inclined surface on the front side of the limiting inclined surface.

[0026] According to the above preferred technical solution, when assembling the light source board, the guiding slope can guide the position of the light source board to assist the alignment and clamping between the through hole and the clamping claw on the light source board, thereby improving the assembly efficiency of the light source board.

[0027] In the lighting device of the optional technical solution of the present invention, the lampshade includes a light-transmitting portion located at the front side and a fixing portion provided on the periphery of the light-transmitting portion and extending in the front-to-back direction, and the front end outer edge of the housing is fixed to the fixing portion by a clamping claw. The limiting bevel is provided on the front end outer edge of the housing, or the limiting bevel is provided on the fixing portion.

[0028] According to the above preferred technical solution, the front end outer edge of the shell is clamped and fixed to the lampshade with almost no gap, so that the lampshade can obtain a good fixing effect in the x-axis, y-axis and z-axis directions, thereby achieving the limitation of the center of the lampshade, and the center of the lampshade is not easy to shift.

[0029] In the lighting device of the optional technical solution of the present invention, the front end outer edge or the fixing portion of the shell is provided with a plurality of claws and a plurality of limiting inclined surfaces at different circumferential positions.

[0030] In the lighting device of the optional technical solution of the present invention, a plurality of claws are provided at different circumferential positions on the front end outer edge or the fixing portion of the shell, and the limiting inclined surface is provided on the claws. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A lighting device in the prior art is shown;

[0032] Figure 2 A schematic structural diagram of a lighting device according to an embodiment of the utility model is shown;

[0033] Figure 3 A schematic diagram of the housing structure of the lighting device according to an embodiment of the utility model is shown;

[0034] Figure 4 A schematic diagram showing a structure in which a light source board of an illuminating device according to an embodiment of the utility model is installed on a housing;

[0035] Figure 5 A cross-sectional view of a lighting device according to an embodiment of the present utility model is shown;

[0036] Figure 6 for Figure 5 A partial enlarged view of the middle A area;

[0037] Figure 7 A schematic diagram of the housing structure of the lighting device according to an embodiment of the utility model is shown;

[0038] Figure 8 A schematic diagram of the housing structure of the lighting device according to an embodiment of the utility model is shown;

[0039] Fig. 9 A cross-sectional view of a lighting device according to an embodiment of the present utility model is shown;

[0040] Fig.10 for Fig. 9 A partial enlarged view of the middle B area;

[0041] Fig.11 A schematic diagram of the structure of a lampshade of an illuminating device according to an embodiment of the utility model is shown;

[0042] Fig.12 for Fig.11 A partial enlarged view of the middle C area;

[0043] Fig.13 A schematic structural diagram of a lighting device according to an embodiment of the utility model is shown;

[0044] Fig.14 A schematic structural diagram of a lighting device according to an embodiment of the utility model is shown.

[0045] Reference numerals:

[0046] Lighting device 100, shell 1, platform portion 11, light source board supporting portion 12, front end surface 121, front end outer edge 13, slot 14, lampshade 2, light-transmitting portion 21, fixing portion 22, light source board 3, through hole 31, claws 4a, 4b, limiting inclined surfaces 5a, 5b, and guiding inclined surface 6a. DETAILED DESCRIPTION

[0047] It should be noted that the working principle, characteristics and advantages of the lighting device according to the present invention will be described below in an illustrative manner, but it should be understood that all descriptions are given for illustrative purposes only and should not be construed as forming any limitation on the present invention.

[0048] In addition, for any single technical feature described or implied in the embodiments mentioned in this document, or any single technical feature displayed or implied in the accompanying drawings, the present invention still allows for continued arbitrary combination or deletion of these technical features (or their equivalents) without any technical obstacles, thereby obtaining more other embodiments of the present invention that may not be directly mentioned in this document.

[0049] <Term>

[0050] In this article, the end of the lighting device where light is emitted is referred to as the “front”, and the other end is referred to as the “rear”.

[0051] As used herein, "plurality" refers to a plural number, ie, two or more.

[0052] The lighting device 100 in the embodiment of the present invention is referred to Figure 2 , comprising: a housing 1, a lampshade 2 and a light source board 3. The lampshade 2 is arranged on the front side of the housing 1 and encloses the housing 1 to form a chamber, and the light source board 3 is arranged in the chamber. The lampshade 2 and the housing 1 are fixed by clamping claws 4b arranged on the lampshade 2, and the light source board 3 and the housing 1 are fixed by clamping claws 4a arranged on the housing 1. It can be understood that the light source board 3 is arranged in the chamber in a form facing the lampshade 2, that is, the light source board 3 is arranged in the chamber in a form in which its board surface is basically perpendicular to the front-to-back direction (z-axis direction).

[0053] Since the lampshade 2 and the housing 1 are clamped and fixed by the clamping claws 4b, and the light source board 3 and the housing 1 are clamped and fixed by the clamping claws 4a, it is beneficial to reduce the number of components used for fixing, thereby reducing the assembly cost.

[0054] refer to Figure 6 and Fig.10 The lighting device 100 further includes a limiting inclined surface 5a extending obliquely in the front-rear direction, and the limiting inclined surface 5a is disposed on a claw 4a of the housing 1 for engaging with the light source board 3. Through the limiting inclined surface 5a, after the light source board 3 is engaged and fixed with the housing 1, the light source board 3 can obtain a good fixing effect in the x-axis, y-axis and z-axis directions, so that the light source board 3 is not easily offset.

[0055] In some embodiments, the claws 4 a may be interference fit with the light source board 3 , or may be fixed by silicone after assembly, so as to further improve the fixing effect on the light source board 3 .

[0056] refer to Fig.13 and Fig.14 The lighting device 100 further includes a limiting inclined surface 5b extending obliquely in the front-rear direction, and the limiting inclined surface 5b is arranged at the outer edge of the lampshade 2. Through the limiting inclined surface 5b, after the lampshade 2 is clamped and fixed to the housing 1, the lampshade 2 can obtain a good fixing effect in the x-axis, y-axis and z-axis directions, so that the lampshade 2 is not easily deviated.

[0057] The extending direction of the limiting inclined surfaces 5a, 5b is inclined to the front-rear direction, which means that the plane where the limiting inclined surfaces 5a, 5b are located intersects with the front-rear direction (z-axis direction).

[0058] Although in the illustrated embodiment, the limiting bevel 5a and the limiting bevel 5b are used to prevent the position of the light source board 3 and the lampshade 2 from shifting when the light source board 3 and the housing 1 are fixed, and when the lampshade 2 and the housing 1 are fixed, respectively. However, in other embodiments, the limiting bevel 5a may be used only when the light source board 3 and the housing 1 are fixed to prevent the position of the light source board 3 from shifting, so as to improve the problem caused by the assembly tolerance of the light source board 3. Alternatively, in other embodiments, the limiting bevel 5b may be used only when the lampshade 2 and the housing 1 are fixed to prevent the position of the lampshade 2 from shifting, so as to improve the problem caused by the assembly tolerance of the lampshade 2.

[0059] Although in the illustrated embodiment, the limiting inclined surface 5a for preventing the position of the light source board 3 from being shifted is disposed on the claw 4a of the housing 1 during the fixation of the light source board 3 and the housing 1, in other embodiments, the limiting inclined surface 5a for preventing the position of the light source board 3 from being shifted may also be disposed at other positions of the housing 1, or disposed on the light source board 3, for example, at a position of the light source board 3 for being engaged with the housing 1.

[0060] Although in the illustrated embodiment, the limiting inclined surface 5b for preventing the position of the lampshade 2 from being offset is provided on the lampshade 2 during the fixing of the lampshade 2 and the housing 1, in other embodiments, the limiting inclined surface 5b for preventing the position of the light source board 3 from being offset may also be provided on the housing 1, for example, at a portion of the housing 1 for engaging with the lampshade 2.

[0061] Although the illustrated embodiment shows a case where only one light source board 3 is provided in the lighting device 100, in other embodiments, a plurality of light source boards 3 may be provided in the lighting device 100, and when each light source board 3 is fixed to the housing 1, the limiting inclined surface 5a is used to prevent the position of the light source board 3 from being offset.

[0062] In some embodiments, reference Figure 3 The housing 1 includes a platform portion 11 and two light source board support portions 12. The platform portion 11 has a plane substantially perpendicular to the z-axis, and the light source board support portion 12 extends forward from the platform portion 11 and forms a front end surface 121 at the front end. Figure 6 A pair of claws 4 a are arranged at the front end of the light source board supporting portion 12 in a manner such that the limiting inclined surfaces 5 a face each other.

[0063] refer to Figure 4 A through hole 31 is formed on the light source board 3 , and a pair of claws 4 a extend forward from the front end surface 121 of the light source board supporting portion 12 to pass through a through hole 31 on the light source board 3 .

[0064] refer to Figure 5 and Figure 6 , the platform portion 11 is arranged parallel to and separated from the light source board 3 at the rear of the light source board 3. The rear end of the light source board support portion 12 is fixedly connected to the platform portion 11, and the front end face 121 abuts against the rear side surface of the light source board 3 to support the light source board 3. A pair of claws 4a pass through the through holes 31 on the light source board 3, and the limiting inclined surface 5a formed on the pair of claws 4a abuts against the front side surface of the light source board 3 to limit the light source board 3. In other words, the limiting inclined surface 5a abuts against the light source board 3 from the front side of the light source board 3, and the front end face 121 abuts against the rear side of the light source board 3.

[0065] refer to Figure 6 The distance between the end of the limiting slope 5a close to the front end face 121 and the front end face 121 is d1, the distance between the end of the limiting slope 5a away from the front end face 121 and the front end face 121 is d2, and the thickness of the light source board 3 is d, d1 <d<d2。

[0066] When the light source board 3 and the housing 1 are fixed by a pair of claws 4a, the limiting inclined surface 5a at the rear end of the claws 4a and the front end face 121 of the light source board support part 12 can clamp the light source board 3 from the front and rear sides with almost no gap, so that the light source board 3 can obtain a good fixing effect in the x-axis, y-axis and z-axis directions, so that the light source board 3 is not easy to shift. In addition, since the light source board 3 is in contact with the front end face 121 of the light source board support part 12, that is, the light source board 12 and the housing 1 are in contact in a face-to-face manner, it is beneficial to the heat dissipation of the light source board 3.

[0067] Although in the above-described embodiment, that is, Figures 3 to 6 In the embodiment shown, the housing 1 includes two light source board support parts 12. However, in other embodiments, Figure 7 The housing 1 may be provided with only one light source board support portion 12, and a pair of claws 4a are symmetrically arranged at the front end of the light source board support portion 12. The setting position of the light source board support portion 12 is not particularly limited, and can be set at the center of the housing 1 or at the periphery of the housing 1.

[0068] exist Figure 7 In the embodiment shown, the through hole 31 on the light source board 3 is opened at the center of the light source board 3, and a pair of claws 4a at the front end of the light source board support portion 12 pass through the through hole 31 together, which is more conducive to obtaining a better fixing effect for the light source board 3 in the x-axis, y-axis and z-axis directions, and is therefore considered to be preferred.

[0069] Although in the above-described embodiment, that is, Figures 3 to 6 In the embodiment shown, a pair of claws 4a are symmetrically arranged at the front end of the same light source board supporting portion 12. However, in other embodiments, referring to Figures 8 to 10 , a pair of claws 4a can be relatively and symmetrically arranged on two different light source board support parts 12, and the two light source board support parts 12 are arranged corresponding to the outer edge of the light source board 3. In the case where a pair of claws 4a are relatively and symmetrically arranged on two different light source board support parts 12, making the line between the two light source board support parts 12 pass through the center of the housing 1 is more conducive to obtaining a better fixing effect of the light source board 3 in the x-axis, y-axis and z-axis directions, and is therefore considered to be preferred. When a pair of claws 4a are relatively and symmetrically arranged on two different light source board support parts 12, the pair of claws 4a will respectively pass through the two through holes 31 on the light source board 3 and fix the light source board 3.

[0070] In addition, it should be noted that whether the pair of claws 4a are arranged opposite to each other or opposite to each other has no corresponding relationship with whether the pair of claws 4a are arranged on the same light source board support portion 12 or respectively arranged on two light source board support portions 12. When the pair of claws 4a are arranged on the same light source board support portion 12, the pair of claws 4a may also be arranged opposite to each other, and when the pair of claws 4a are respectively arranged on two light source board support portions 12, the pair of claws 4a may also be arranged opposite to each other.

[0071] In some embodiments, reference Figure 8 and Fig. 9 The two segmented limiting inclined surfaces 5a are evenly arranged around the center of the light source board 3, that is, the two segmented limiting inclined surfaces 5a are evenly arranged on the circumference of a circle with the center of the light source board 3 as the center and an arbitrary radius. Fig.11 The two segmented limiting inclined surfaces 5b are evenly arranged around the center of the lampshade 2, that is, the two segmented limiting inclined surfaces 5b are evenly arranged on the circumference of a circle with an arbitrary radius and the center of the lampshade 2 as the center.

[0072] Although there are two limiting inclined surfaces 5a, 5b in the illustrated embodiment, in other embodiments, three or more limiting inclined surfaces 5a, 5b may be provided in sections. The three or more limiting inclined surfaces 5a, 5b may be evenly provided around the center of the light source board 3 / lamp cover 2 in the circumferential direction.

[0073] By setting the limiting bevel 5a evenly around the center of the light source board and the limiting bevel 5b evenly around the center of the lampshade 2, it is helpful to limit the center of the lampshade 2 and the light source board 3, so that the lampshade 2 and the light source board 3 can be fixed in the center. When the center of the light source board 3 and the center of the lampshade 2 are effectively fixed in the center of the housing 1, the center of the lampshade 2 and the center of the light source board 3 are unified, that is, aligned in the front-to-back direction, so as to provide more accurate piping light distribution and lighting effects, and improve the lighting effect.

[0074] The center of the light source board 3 refers to the geometric center of the light source board 3. For example, in the illustrated embodiment, the light source board 3 is a circular panel, and the center of the light source board 3 is the center of the circular panel. The center of the lampshade 2 refers to the optical center of the lampshade 2. In some cases, the optical center of the lampshade 2 and the geometric center of the lampshade 2 coincide with each other, and in such a case, the center of the lampshade 2 is also the geometric center of the lampshade 2. For example, the light-transmitting portion 21 at the front of the lampshade 2 is a circular panel, and the center of the lampshade 2 is the center of the circular panel serving as the light-transmitting portion 21.

[0075] In some embodiments, reference Figure 8 The light source board supporting portion 12 is arranged corresponding to the outer edge of the light source board 3 so that the light source supporting portion 12 occupies less space in the middle of the housing 1 for installing electronic components.

[0076] Although in Figure 8 In the illustrated embodiment, the light source board support parts 12 are two independent structures. However, in other embodiments, the light source board support parts 12 may be continuously arranged along the circumferential direction with the inner edge of the housing 1 .

[0077] In some embodiments, reference Figure 6 and Fig.10 The claw 4a is also provided with a guiding inclined surface 6a on the front side of the limiting inclined surface 5a. When assembling the light source board 3, the guiding inclined surface 6a can guide the position of the light source board 3 to assist the alignment and clamping between the through hole 31 on the light source board 3 and the claw 4a, thereby improving the assembly efficiency of the light source board 3. Of course, whether the guiding inclined surface 6a is provided, as well as the length and inclination angle of the guiding inclined surface 6a, can be selected by those skilled in the art according to actual conditions.

[0078] In some embodiments, reference Fig.11 The lampshade 2 includes a light-transmitting portion 21 located at the front side and a fixing portion 22 arranged on the periphery of the light-transmitting portion 21 and extending in the front-to-back direction. A plurality of claws 4b are arranged circumferentially spaced apart on the fixing portion 22 of the lampshade 2. Figure 3 The front end outer edge 13 of the housing 1 is provided with a plurality of slots 14 , which can be matched and engaged with the claws 4 b to fix the lampshade 2 and the housing 1 .

[0079] Fig.12 yes Fig.11 For a partial enlarged view, see Fig.12 A limiting inclined surface 5 b is provided on the fixing portion 22 of the lampshade 2 . Fig.13 The schematic diagram shows the state when the lampshade 2 and the housing 1 are not fixed together. Fig.14 The schematic diagram shows the state after the lampshade 2 and the housing 1 are fixed together. Fig.14 By making the front end outer edge 13 of the shell 1 abut against the limiting inclined surface 5b, that is, the front end outer edge 13 of the shell 1 and the lampshade 2 are clamped and fixed in a form with almost no gap, the lampshade 2 can obtain a better fixing effect in the x-axis, y-axis and z-axis directions, thereby realizing the limitation of the center of the lampshade 2, and the center of the lampshade 2 is not easy to deviate.

[0080] Although in the illustrated embodiment, the limiting inclined surface 5b is disposed on the fixing portion 22 of the lampshade 2, in other embodiments, the limiting inclined surface 5b may also be disposed on the front end outer edge 13 of the housing 1.

[0081] Although in the illustrated embodiment, the limiting inclined surface 5b is disposed on the fixing portion 22 of the lampshade 2 and is separated from the claw 4b, in other embodiments, the limiting inclined surface 5b may also be disposed on the claw 4b.

[0082] Although in the illustrated embodiment, the limiting inclined surfaces 5b are arranged in blocks on both sides of the fixing portion 22 of the lampshade 2, and there is a straight line passing through the center of the lampshade 2 that can intersect with the planes where the two limiting inclined surfaces 5b are located, in other embodiments, the limiting inclined surfaces 5b may be continuous, for example, they may be arranged around the outer circumference of the lampshade 2.

[0083] That is to say, as long as the inner end surface of the lampshade 2 in contact with the housing 1 has a limiting slope 5b, the center of the lampshade 2 can be limited, so that the center of the lampshade 2 is not easily offset. The specific setting position and shape and size of the limiting slope 5b can be selected according to needs.

[0084] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lighting device, characterized in that: include: case; A lampshade, which is arranged on the front side of the shell and enclosed with the shell to form a chamber; A light source board is arranged in the chamber, and the lampshade and / or the light source board are fixed to the housing by clamping claws, and A limiting inclined surface is provided at least on one of the lampshade and the shell, and an extending direction of the limiting inclined surface is inclined to the front-rear direction, and is used for abutting against the other of the lampshade and the shell.

2. The lighting device according to claim 1, characterized in that: The claw is arranged on the housing.

3. The lighting device according to claim 1 or 2, characterized in that: The limiting inclined surface is arranged on the shell.

4. The lighting device according to claim 3, characterized in that: The limiting inclined surface is arranged on the clamping claws, and there are at least two clamping claws, and the clamping claws are arranged on the housing in a form in which the limiting inclined surfaces face each other or face away from each other.

5. The lighting device according to claim 1 or 2, characterized in that: The limiting inclined surfaces are evenly arranged around the center circumference of the lampshade in a continuous or segmented manner.

6. The lighting device according to claim 1 or 2, characterized in that: The lampshade includes a light-transmitting portion located at the front side and a fixing portion arranged on the periphery of the light-transmitting portion and extending in the front-to-back direction. The front end outer edge of the housing is fixedly engaged with the fixing portion by the claws. The limiting inclined surface is arranged on the front end outer edge of the shell, or the limiting inclined surface is arranged on the fixing portion.

7. The lighting device according to claim 6, characterized in that: The front end outer edge of the housing or the fixing portion is provided with a plurality of the claws and a plurality of the limiting inclined surfaces at different circumferential positions, or, A plurality of the clamping claws are arranged at different circumferential positions at the front end outer edge of the shell or the fixing portion, and the limiting inclined surface is arranged on the clamping claws.

8. A lighting device, characterized in that: include: case; A lampshade, which is arranged on the front side of the shell and enclosed with the shell to form a chamber; A light source board is arranged in the chamber, and the lampshade and / or the light source board are fixed to the housing by clamping claws, and A limiting inclined surface is provided at least on one of the light source board and the shell, and an extending direction of the limiting inclined surface is inclined to the front-rear direction, and is used for abutting against the other of the light source board and the shell.

9. The lighting device according to claim 8, characterized in that: The claw is arranged on the housing.

10. The lighting device according to claim 8 or 9, characterized in that: The limiting inclined surface is arranged on the shell.

11. The lighting device according to claim 10, characterized in that: The limiting inclined surface is arranged on the clamping claws, and there are at least two clamping claws, and the clamping claws are arranged on the housing in a form in which the limiting inclined surfaces face each other or face away from each other.

12. The lighting device according to claim 11, characterized in that: The housing comprises: A light source board supporting portion, the front end surface of which abuts against the rear side surface of the light source board to support the light source board; The clamping claw extends forward from the front end surface of the light source board supporting portion and passes through the through hole on the light source board. The limiting inclined surface supports the light source board from the front side of the light source board and the front end surface supports the light source board from the rear side.

13. The lighting device according to claim 12, characterized in that: The housing comprises: The platform portion is parallel to and spaced from the light source board and is disposed behind the light source board. The light source board supporting portion extends forward from the platform portion.

14. The lighting device according to claim 12, characterized in that: The through hole is located at the center of the light source board, and a pair of the clamping claws are arranged at the light source board supporting portion in opposite directions and pass through the through hole together.

15. The lighting device according to claim 12, characterized in that: There are two through holes, and a pair of the clamping claws are evenly arranged around the center circumference of the light source board and pass through the two through holes respectively.

16. The lighting device according to claim 12, characterized in that: The light source board supporting portion is disposed corresponding to an outer edge of the light source board.

17. The lighting device according to claim 12, characterized in that: The distance between the end of the limiting slope close to the front end face and the front end face is d1, the distance between the end of the limiting slope away from the front end face and the front end face is d2, the thickness of the light source board is d, d1 <d<d2。 18. The lighting device according to claim 8 or 9, characterized in that: The limiting inclined surfaces are evenly arranged around the center circumference of the light source board in a continuous or segmented manner.

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