Lighting device

Abstract

The utility model provides a lighting device. The lighting device comprises a shell, a lampshade, at least one substrate and a plurality of clamping pieces. The lampshade covers the front side of the shell, and a cavity is defined by the lampshade and the shell. At least one substrate is arranged in the cavity in the mode of facing the lampshade, and the substrate is used for arranging a light source piece and / or a driving piece. The clamping piece comprises a fixed end and a free end, and the fixed end is fixed to the shell. A first clamping part and a second clamping part are arranged at the positions, away from the fixed end, of the same clamping piece, the first clamping part is connected with the lampshade in a clamped mode, and the second clamping part is connected with the base plate in a clamped mode. According to the lighting device, the lampshade and the substrate are fixed by clamping the lampshade and the substrate to the same clamping piece, so that the number of parts needed for fixing is reduced through the fixing mode, the internal structure of the lighting device is simplified, and meanwhile, the available space of electronic circuit parts is also increased.

Description

Technical Field

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

[0002] Prior art CN212840845U discloses a lighting device, referring to Figure 1 The lighting device comprises a cylindrical housing, a heat sink 30', a circuit board 40', an inner cover 50' and a light source plate 60' contained in the inner cavity of the housing, wherein the housing comprises a base housing 10' and a top housing 20', and the top housing 20' can be opened in the axial direction relative to the base housing 10'. The inner peripheral wall of the base housing 10' is partially recessed radially outward to form a base housing second groove 12', and the opening edge of the top housing 20' forms a top housing buckle 21' protruding radially outward and corresponding to the base housing second groove 12', and the top housing buckle 21' can be embedded in the base housing second groove 12' to tightly connect the base housing 10' and the top housing 20'.

[0003] In the above prior art, the top cover 20 ' and the base cover 10 ' are fixed by the top cover buckle 21 ' on the outer periphery of the top cover 20 '. When this fixing method is adopted, the lampshade 20 ' is subjected to a large stress when the top cover 20 ' is assembled.

[0004] Furthermore, in the above-mentioned prior art, in order to fix the light source plate 60' and the circuit board 40', multiple components including the heat sink 30' and the inner cover 50' are required. This results in a large number of components for fixing inside the housing of the lighting device, a more complex structure, and more space inside the housing.

[0005] Therefore, the lighting device provided by the prior art has the problem that the lampshade is subjected to greater stress when the lampshade is assembled, and the large number of internal fixing components leads to a more complicated internal structure and less available space for electronic circuit components. Summary of the invention

[0006] 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.

[0007] The utility model provides a lighting device, comprising: a shell, a lampshade, at least one substrate and a plurality of clips. The lampshade is arranged on the front side of the shell, and is enclosed with the shell to form a chamber. At least one substrate is arranged in the chamber in a form facing the front-back direction, and the substrate is used to set a light source component and / or a driving component. The clip comprises a fixed end and a free end, and the fixed end is fixed to the shell. A first clip part and a second clip part are respectively arranged at a position of the same clip part away from the fixed end, the first clip part is clipped with the lampshade, and the second clip part is clipped with the substrate.

[0008] According to the lighting device provided by the present invention, the lampshade and the substrate are fixed by clamping them to the same clamping piece. This fixing method reduces the number of components required for fixing, thereby simplifying the internal structure of the lighting device and increasing the available space for electronic circuit components. In addition, this fixing method is also conducive to improving the assembly efficiency of the lighting device and reducing the manufacturing cost of the device. In addition, the lampshade is fixed by the clamping piece, and the deformation stress of the clamping piece and the lampshade is small, so that the lampshade is less likely to be damaged due to excessive stress during the assembly process and use, thereby improving the reliability of the lighting device.

[0009] In the lighting device of an optional technical solution of the present invention, the clamping component is integrally formed with the shell.

[0010] According to the above preferred technical solution, since the housing and the clamping member are integrally formed, the manufacturing of the clamping member and the housing is facilitated, and the connection and fixation between the clamping member and the housing is made more reliable.

[0011] In the lighting device of the optional technical solution of the present invention, the housing and the clamping member are both made of crystalline polymer materials, and the lampshade is made of amorphous polymer materials.

[0012] According to the above preferred technical solution, since the shell and the clamping part are both made of crystalline polymer materials, it is beneficial to improve the breaking strength of the shell and the clamping part, so that the clamping part is not easy to be damaged or broken when the required deformation occurs. The lampshade is made of amorphous polymer materials, which can make the lampshade have better transparency and improve the lighting effect.

[0013] In the lighting device of the optional technical solution of the present invention, the housing has a step portion and a peripheral portion. The step portion is arranged parallel to the substrate. One end of the peripheral portion is arranged around the outer edge of the step portion, and the other end extends forward and abuts against the outer edge of the lampshade. The fixed end is fixed to the step portion, the first clamping portion is arranged at the free end, and the second clamping portion is arranged between the first clamping portion and the fixed end.

[0014] According to the above preferred technical solution, since the fixed end of the clamping member is fixed to the step portion parallel to the substrate, it is conducive to stably fixing the clamping member to the housing. Since the first clamping portion is arranged at the free end, that is, the free end does not extend excessively forward, it can avoid affecting the lighting effect as much as possible. In addition, when the first clamping portion is arranged at the free end, the lampshade can be more efficiently positioned to the first clamping portion and clamped with the first clamping portion.

[0015] In the lighting device of an optional technical solution of the present invention, the first clamping portion and the second clamping portion are clamping claws or clamping grooves.

[0016] According to the above preferred technical solution, the structures of the first clamping part and the second clamping part are more reliable and the manufacturing and processing are more convenient.

[0017] In the lighting device of the optional technical solution of the present invention, the first clamping portion is a clamping groove. The inner wall of the lampshade has a lampshade clamping claw protruding inward, and the first clamping portion is engaged with the lampshade clamping claw.

[0018] In the lighting device of the optional technical solution of the present invention, the second clamping part is a clamping claw extending inward. The outer edge of the substrate has a substrate clamping groove, and the substrate clamping groove is engaged with the second clamping part.

[0019] In the lighting device of the optional technical solution of the present invention, the lighting device further includes a conductive needle, which extends from the outside of the shell into the shell and is connected to the substrate, and the conductive needle includes a supporting portion that supports the substrate.

[0020] In the lighting device of the optional technical solution of the present invention, the second clamping portion is a clamping groove, and the outer edge of the substrate has a substrate clamping claw extending outward, and the substrate clamping claw is engaged with the second clamping portion.

[0021] According to the above preferred technical solution, the substrate and the lampshade can be installed and fixed only by using the clamping parts without using other fixing components, so the structure of the lighting device is simplified.

[0022] In the lighting device of the optional technical solution of the present invention, the first clamping portion is a clamping claw extending outward, the inner wall of the lampshade has a lampshade clamping groove, and the first clamping portion is engaged with the lampshade clamping groove.

[0023] In the lighting device of the optional technical solution of the present invention, it also includes a guide surface, which is configured as the front end surface of the claw or the front end surface of the free end, and the extension direction of the guide surface is inclined to the front-rear direction.

[0024] According to the above preferred technical solution, the guide surface can guide the lampshade when the lampshade is installed, so as to more efficiently align the first clamping portion and the lampshade with each other and clamp them together.

[0025] In the lighting device of the optional technical solution of the present invention, the housing and the clamping member are both made of crystalline polybutylene terephthalate, and the lampshade is made of amorphous polymethyl methacrylate.

[0026] According to the above preferred technical solution, since the clip is made of crystalline PBT, and the Young's modulus of crystalline PBT is small, the stress under the same structure and the same deformation is smaller, that is, in the process of assembling the substrate and the lampshade, the clip made of crystalline PBT is subjected to less stress when the required deformation is generated. Therefore, the clip made of crystalline PBT is helpful to alleviate the problem of damage to the lighting device during the assembly process. In addition, since the destructive strength of crystalline PBT is also greater, the clip is not easy to be damaged or broken when the required deformation is generated, which can further alleviate the problem of damage to the lighting device during the assembly process. Since the lampshade is made of amorphous PMMA, this makes the lampshade have better transparency, which is helpful to improve the lighting effect.

[0027] In the lighting device of an optional technical solution of the present invention, the clamping member is a clamping rib extending in the front-to-back direction.

[0028] According to the above preferred technical solution, since the clamping part is a clamping rib, that is, the clamping part is a strip-shaped part with a certain length, the stress on the clamping rib when producing the required deformation can be reduced, so that the lighting device is not prone to damage during the assembly process, and the reliability is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A lighting device in the prior art is shown;

[0030] Figure 2 A schematic structural diagram of a lighting device according to an embodiment of the utility model is shown;

[0031] Figure 3 A cross-sectional view of a lighting device according to an embodiment of the present utility model is shown;

[0032] Figure 4 A schematic structural diagram of a housing of a lighting device according to an embodiment of the utility model is shown;

[0033] Figure 5 A schematic structural diagram of a lampshade of an illuminating device according to an embodiment of the utility model is shown;

[0034] Figure 6 A schematic structural diagram of a substrate of an illuminating device according to an embodiment of the utility model is shown;

[0035] Figure 7 A cross-sectional view of a lighting device according to an embodiment of the present utility model is shown;

[0036] Figure 8 A cross-sectional view of a lighting device according to an embodiment of the present utility model is shown;

[0037] Figure markings: lighting device 100, shell 1, step portion 11, peripheral portion 12, lampshade 2, lampshade slot 21a, 21b, lampshade claw 21c, substrate 3, light source component 31, driving component 32, substrate claw 33a, 33c, substrate slot 33b, clamping component 4, fixed end 41, free end 42, guide surface 421, first clamping portion 43a, 43b, 43c, second clamping portion 44a, 44b, 44c, conductive pin (PIN pin) 5. DETAILED DESCRIPTION

[0038] 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.

[0039] 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.

[0040] <Term>

[0041] 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”.

[0042] As used herein, "plurality" refers to a plural number, ie, two or more.

[0043] Herein, the direction from a point in the cavity formed by the lampshade and the shell toward the center of the cavity is “inward”; the direction from a point in the cavity toward the shell is “outward”.

[0044] The lighting device 100 in the embodiment of the present invention is referred to Figure 2 and Figure 3 , including: a shell 1, a lampshade 2, at least one substrate 3 and a plurality of clamping parts 4. The lampshade 2 is arranged on the front side of the shell 1, and is enclosed with the shell 1 to form a chamber. At least one substrate 3 is arranged in the chamber in the form of facing the front and rear directions, and the substrate 3 is used to set the light source component 31 and / or the driving component 32. The clamping part 4 includes a fixed end 41 and a free end 42, and the fixed end 41 is fixed to the shell 1. A first clamping part 43a and a second clamping part 44a are respectively arranged at a position away from the fixed end 41 of the same clamping part 4, the first clamping part 43a is clamped with the lampshade 2, and the second clamping part 44a is clamped with the substrate 3.

[0045] The substrate 3 is arranged in the chamber in a manner facing the front-rear direction, which means that the substrate 3 is arranged in the chamber with its plate surface being substantially perpendicular to the front-rear direction.

[0046] According to the lighting device 100 provided in this embodiment, the lampshade 2 and the substrate 3 are fixed by making the lampshade 2 and the substrate 3 both be clamped to the same clamping member 4. Such a fixing method reduces the number of components required for fixing, thereby simplifying the internal structure of the lighting device 100, and also increasing the available space for electronic circuit components. Moreover, this fixing method is also conducive to improving the assembly efficiency of the lighting device 100 and reducing the manufacturing cost of the lighting device 100. In addition, the lampshade 2 is fixed by the clamping member 4, so that the deformation stress of the clamping member 4 and the lampshade 2 is small, so that during the assembly process and the use process, the lampshade 2 is less likely to be damaged due to excessive stress, thereby improving the reliability of the lighting device 100.

[0047] In some embodiments, Figure 2 As shown, the interior of the chamber enclosed by the lampshade 2 and the shell 1 may have only one substrate 3, and the light source component 31 and the driving component 32 are both arranged on the substrate 3. The driving component 32 and the light source component 31 may be respectively arranged on two mounting surfaces of the substrate 3 facing away from each other. A part of the driving component 32 may also be arranged on the same mounting surface of the substrate 3 as the light source component 31. In other words, in the embodiment described above, the substrate 3 is a DOB (Driver on Board) substrate, and a plurality of light source modules and driving modules are dispersed on the substrate 3. The light source module includes a plurality of light source components 31. The driving module includes a plurality of driving components 32 in the form of patches or plug-ins, for example Figure 2 The figure shows a plug-in type driver 32. When the driver 32 is in the form of a patch, it can be set on any surface of the substrate 3. When the driver 32 is in the form of a plug-in, the driver 32 in the form of a plug-in is generally set on the surface of the substrate 3 opposite to the light source 31, so as not to affect the light output effect and its own heat dissipation.

[0048] In some other embodiments, only the light source component 31 is disposed on the substrate 3 , and the driving component 32 is disposed outside the lighting device 100 .

[0049] In other embodiments, two substrates 3 may be provided inside the chamber enclosed by the lampshade 2 and the housing 1, wherein one substrate 3 is a light source board for mounting the light source member 31, and the other substrate 3 is a driving board for mounting the driving member 32. The light source board and the driving board may be respectively engaged with two second engaging portions 44a disposed between the fixed end 41 and the first engaging portion 43a. Alternatively, one of the light source board and the driving board is engaged with the second engaging portion 44a, and the other is not engaged with the second engaging portion 44a.

[0050] In some embodiments, Figure 4 As shown, the lighting device 100 includes two clamping parts 4 symmetrically arranged on both sides of the housing 1 .

[0051] In other embodiments, the lighting device 100 may include three, four or more clamping members 4. Furthermore, the plurality of clamping members 4 may be arranged in a symmetrical manner or in an asymmetrical manner.

[0052] In some embodiments, Figure 3 As shown, the housing 1 has a step portion 11 and a peripheral portion 12, and the step portion 11 is arranged parallel to the substrate 3. One end of the peripheral portion 12 is arranged around the outer edge of the step portion 11, and the other end extends to the front side and abuts against the outer edge of the lampshade 2. The clamping member 4 is a clamping rib, and its fixed end 41 is fixed on the step portion 11 and arranged close to the outer edge of the step portion 11, and the free end 42 extends forward through the substrate 3 and finally extends to the position of the peripheral wall of the lampshade 2. Since the clamping member 4 is a clamping rib, that is, the clamping member 4 is a strip-shaped member with a certain length, the stress on the clamping rib when the required deformation is generated can be reduced, so that the lighting device 100 is not easy to be damaged during the assembly process, and the reliability is improved. In addition, since the fixed end 41 of the clamping member 4 is fixed to the step portion 11 parallel to the substrate 3, it is conducive to stably fixing the clamping member 4 to the housing 1.

[0053] In other embodiments, the clamping member 4 may also be a plate-shaped member, a block-shaped member or other irregular shapes. It is understood that any structure that can be clamped with both the lampshade 2 and the substrate 3 and fixed in the housing 1 is within the technical scope of the clamping member 4 of the present utility model.

[0054] In other embodiments, the fixed end 41 of the clamping member 4 may be fixed to the outer peripheral portion 12. For example, the clamping member 4 may be an L-shaped structure having a horizontal section and a vertical section, and the end of the horizontal section is the fixed end 41 fixed to the outer peripheral portion 12. For another example, the clamping member 4 may also be T-shaped, that is, the clamping member 4 has two free ends 42, and the fixed end 41 of the clamping member 4 is disposed on the housing 1 in front of the substrate 3.

[0055] That is to say, Figure 3 The fixing end 41 of the clamping part 4 provided on the step part 11 is only an example of the present invention, and as long as it is fixed on the housing 1, it is within the technical scope of the fixing end 41 of the clamping part 4 of the present invention. There is no special limitation on the shape of the clamping part 4 and the specific position of the fixing end 41.

[0056] In some embodiments, Figure 3As shown, the first clamping portion 43a is arranged at the free end 42, and the second clamping portion 44a is arranged between the first clamping portion 43a and the fixed end 41. Since the first clamping portion 43a is arranged at the free end 42, that is, the free end 42 does not extend excessively forward, the lighting effect can be avoided as much as possible. In addition, when the first clamping portion 43a is arranged at the free end 42, the lampshade 2 can be more efficiently positioned to the first clamping portion 43a and clamped with the first clamping portion 43a.

[0057] In other embodiments, the first clamping portion 43a may not be disposed at the free end 42, that is, there may be a certain distance between the first clamping portion 43a and the free end 42. Figure 8 As shown, the slot of the first clamping portion 43a maintains a certain necessary distance from the free end 42. It can be understood that as long as it can be clamped with the lampshade 2, the position of the first clamping portion 43a on the clamping member 4 can be selected.

[0058] In some embodiments, the housing 1 and the clip 4 are integrally formed and are both made of crystalline polybutylene terephthalate (PBT), and the lampshade 2 is made of amorphous polymethyl methacrylate (PMMA). Since the housing 1 and the clip 4 are integrally formed, it is convenient to manufacture the clip 4 and the housing 1, and the connection and fixation between the clip 4 and the housing 1 is more reliable. Since the clip 4 is made of crystalline PBT, and the Young's modulus of crystalline PBT is small, the stress under the same deformation amount of the same structure is smaller, that is, in the process of assembling the substrate 3 and the lampshade 2, the clip 4 made of crystalline PBT is subjected to less stress when the required deformation amount is generated. Therefore, the clip 4 made of crystalline PBT is conducive to alleviating the problem of damage to the lighting device 100 during the assembly process. In addition, since the destructive strength of crystalline PBT is also greater, the clip 4 is not easy to be damaged or broken when the required deformation amount is generated, thereby further alleviating the problem of damage to the lighting device 100 during the assembly process. At the same time, the problem of poor reliability caused by light degradation and high temperature degradation during the life of the lighting device 100 is solved. Since the lampshade 2 is made of amorphous PMMA, the lampshade 2 has better transparency, which is conducive to improving the lighting effect.

[0059] In other embodiments, the housing 1 and the clamping member 4 may also be connected and fixed by other means such as plugging or welding.

[0060] In other embodiments, the housing 1 and the clip 4 may be made of materials other than PBT, and the lampshade 2 may be made of materials other than PMMA. It is understood that there is no particular limitation on the material selection of the housing 1, the clip 4 and the lampshade 2, but from the perspective of improving the strength of the housing 1 and the clip 4, it is considered preferred that the housing 1 and the clip 4 are made of crystalline polymer materials; from the perspective of ensuring good transparency of the lampshade 2, it is considered preferred that the lampshade 2 is made of amorphous polymer materials.

[0061] In some embodiments, Figures 3 to 6 As shown, the first clamping portion 43a is a claw extending outward, the second clamping portion 44a is a slot, the inner wall of the lampshade 2 has a lampshade slot 21a, the first clamping portion 43a is engaged with the lampshade slot 21a, the outer edge of the substrate 3 has a substrate clamping claw 33a extending outward, and the substrate clamping claw 33a is engaged with the second clamping portion 44a. The front end surface of the clamping claw of the first clamping portion 43a is configured as a guide surface 421, and the extension direction of the guide surface 421 is inclined to the front-to-back direction. The guide surface 421 can guide the lampshade 2 when the lampshade 2 is installed, so as to more efficiently align the first clamping portion 43a and the lampshade 2 with each other and engage them together. Figure 3 1 is a schematic diagram of the structure of the lighting device 100 after being assembled. The substrate 3 and the lampshade 2 can be installed and fixed only by using the clamping member 4 without using other fixing components, so the structure of the lighting device 100 is simplified.

[0062] In other embodiments, Figure 7 As shown, the first clamping portion 43b and the second clamping portion 44b are claws extending in opposite directions. The inner wall of the lampshade 2 has a lampshade clamping groove 21b, and the first clamping portion 43b is engaged with the lampshade clamping groove 21b. The outer edge of the substrate 3 has a substrate clamping groove 33b, and the substrate clamping groove 33b is engaged with the second clamping portion 44b. Figure 7 In the embodiment shown, the lampshade 2 can be installed and fixed only by the clamping member 4, while the substrate 3 cannot be completely installed and fixed in the housing 1 only by the clamping member 4. In this case, a support portion can be added at the position where the conductive pin 5 contacts the substrate 3. Of course, in other embodiments, in order to assist in fixing the substrate 3, a support portion can also be provided at other positions such as the peripheral wall of the housing 1.

[0063] In other embodiments, Figure 8As shown, the first clamping portion 43c and the second clamping portion 44c are both clamping grooves, the inner wall of the lampshade 2 has a lampshade claw 21c protruding inward, the lampshade claw 21c is engaged with the first clamping portion 43c, and the outer edge of the substrate 3 has a substrate claw 33c extending outward, the substrate claw 33c is engaged with the second clamping portion 44c. The front end surface of the free end 42 is configured as a guide surface 421, and the extension direction of the guide surface 421 is inclined to the front-to-back direction. The guide surface 421 can guide the lampshade 2 when the lampshade 2 is installed, so as to more efficiently align the first clamping portion 43c and the lampshade 2 with each other and clamp together. The substrate 3 and the lampshade 2 can be installed and fixed only by using the clamping member 4 without using other fixing components, and the structure of the lighting device 100 is simplified.

[0064] In other embodiments (not shown), the first clamping portion is a clamping groove, and the second clamping portion is a clamping claw. The inner wall of the lampshade 2 has a lampshade clamping claw protruding inward, and the first clamping portion is engaged with the lampshade clamping claw; the outer edge of the substrate 3 has a substrate clamping groove, and the substrate clamping groove is engaged with the second clamping portion.

[0065] 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, comprising: case; A lampshade, which is arranged on the front side of the shell and enclosed with the shell to form a chamber; At least one substrate is disposed in the chamber in a manner facing the front-rear direction, and the substrate is used to arrange a light source component and / or a driving component; A plurality of clamping parts, each of which comprises a fixed end and a free end, wherein the fixed end is fixed to the housing, and is characterized in that: A first clamping portion and a second clamping portion are respectively provided at a position of the same clamping member away from the fixed end, wherein the first clamping portion is clamped with the lampshade, and the second clamping portion is clamped with the substrate.

2. The lighting device according to claim 1, characterized in that: The clamping component is integrally formed with the housing.

3. The lighting device according to claim 2, characterized in that: The shell and the clamping piece are both made of crystalline polymer materials, and the lampshade is made of amorphous polymer materials.

4. The lighting device according to any one of claims 1 to 3, characterized in that: The housing has: A step portion, arranged parallel to the substrate; The peripheral portion has one end arranged around the outer edge of the step portion and the other end extending forward and abutting against the outer edge of the lampshade. The fixed end is fixed to the step portion, and the second clamping portion is arranged between the first clamping portion and the fixed end.

5. The lighting device according to claim 4, characterized in that: The first clamping portion is a clamping groove, the inner wall of the lampshade has a lampshade clamping claw protruding inwardly, and the first clamping portion is engaged with the lampshade clamping claw.

6. The lighting device according to claim 4, characterized in that: The second clamping portion is a clamping claw extending inwardly, and the outer edge of the substrate has a substrate clamping groove, and the substrate clamping groove is engaged with the second clamping portion.

7. The lighting device according to claim 6, characterized in that: The lighting device further includes a conductive pin, which extends from the outside of the housing into the housing and is connected to the substrate, and the conductive pin includes a supporting portion for supporting the substrate.

8. The lighting device according to claim 4, characterized in that: The second clamping portion is a clamping groove, and the outer edge of the substrate has a substrate clamping claw extending outward, and the substrate clamping claw is engaged with the second clamping portion.

9. The lighting device according to claim 4, characterized in that: The first clamping portion is a clamping claw extending outward, the inner wall of the lampshade has a lampshade clamping groove, and the first clamping portion is engaged with the lampshade clamping groove.

10. The lighting device according to claim 5, characterized in that: Also includes: The guide surface is configured as the front end surface of the claw or the front end surface of the free end, and the extension direction of the guide surface is inclined to the front-rear direction.

11. The lighting device according to claim 1, characterized in that: The clamping piece is a clamping rib extending in the front-rear direction.

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