Light-emitting device and cover body structure

Abstract

The invention discloses a light-emitting device and a cover body structure. The light-emitting device comprises a base, a shell, a circuit board, a first cover body and a second cover body, the shell covers the base along a mounting direction to form an accommodating space, and the shell is provided with a through hole; the circuit board is arranged in the accommodating space and comprises a light-emitting element, the light-emitting element is used for emitting light to the through hole along a light-emitting direction, a spacing distance is formed between the light-emitting element and the through hole, and the light-emitting direction is vertical to the mounting direction; the first cover body is positioned on a first side of the circuit board; the second cover body is located on a second side of the circuit board, the second cover body and the first cover body form a cover body space, the light-emitting element is located in the cover body space, the cover body space is provided with an opening, and the opening corresponds to the through hole. Therefore, the light-emitting device and the cover body structure can reduce the assembling difficulty and the possibility of light leakage.

Description

Technical Field

[0001] The present invention relates to a lighting device, and more particularly to a lighting device having a cover structure. Background Art

[0002] In order to improve the luminous efficiency of a lighting device, relevant manufacturers have provided a light cover on the lighting device, which covers the light-emitting element to concentrate the light and guide it to the light-emitting hole of the lighting device. The known lighting device has a flat shape in appearance design, and the installation directions of the light-emitting element, the light cover, and the housing are the same as the light-emitting direction of the light-emitting element. With the appearance and usage requirements of users for the lighting device, an upright cylindrical lighting device has been developed. However, because the installation direction is different from the light-emitting direction, light leakage of the light cover is likely to occur in design. Moreover, in order to avoid collision between the housing and the light-emitting element or other electronic components during the installation of the housing, the spatial configuration of the circuit board has certain limitations, resulting in difficulties in assembly and increasing the manufacturing cost of the design.

[0003] In view of this, a lighting device that can reduce the difficulty of assembly and light leakage is still the common goal of relevant manufacturers at present.

[0004] Therefore, a lighting device and a cover structure are needed to solve the above problems. Summary of the Invention

[0005] According to an embodiment of the present invention, a lighting device is provided, which includes a base, a housing, a circuit board, a first cover, and a second cover. The housing is covered on the base along an installation direction to form an accommodation space, and the housing has a through hole. The circuit board is disposed in the accommodation space and includes a light-emitting element, wherein the light-emitting element is used to emit a light along a light-emitting direction to the through hole. There is a spacing distance between the light-emitting element and the through hole, and the light-emitting direction is perpendicular to the installation direction. The first cover is located on a first side of the circuit board. The second cover is located on a second side of the circuit board and forms a cover space with the first cover, wherein the light-emitting element is located in the cover space. The cover space has an opening, and the opening corresponds to the through hole.

[0006] According to an embodiment of the present invention, a cover structure is provided, which includes a first cover and a second cover. The first cover includes a first arc portion and two first retaining wall portions. The first arc portion extends from one end of the first cover to the other end of the first cover along a light-emitting direction of a light source at a first arc angle. The two first retaining wall portions are integrally connected to two sides of the first arc portion respectively. The second cover is detachably connected to the first cover and includes a second arc portion and two second retaining wall portions. The second arc portion extends from one end of the second cover to the other end of the second cover along the light-emitting direction at a second arc angle, and the second arc portion corresponds to the first arc portion. The two second retaining wall portions are integrally connected to two sides of the second arc portion respectively. Wherein, the first cover and the second cover form a cover space, the cover space has an opening, and the width of the cover space gradually expands from the connection of the first arc portion and the second arc portion towards the opening along the light-emitting direction.

[0007] Through the combination of the first cover and the second cover, the design difficulty caused by the difference between the installation direction and the light-emitting direction can be reduced, and the light can be blocked by the cover space formed by the first cover and the second cover. Thereby, the manufacturing cost can be reduced and the possibility of light leakage can be reduced. Brief Description of the Drawings

[0008] Figure 1 A three-dimensional schematic diagram of a light-emitting device according to an embodiment of the present invention is shown;

[0009] Figure 2 Shown in accordance with Figure 1 A partially exploded schematic diagram of the light-emitting device of the embodiment is shown;

[0010] Figure 3 Shown in accordance with Figure 2 A three-dimensional schematic diagram of the cover structure and the circuit board according to the embodiment is shown;

[0011] Figure 4 Shown in accordance with Figure 2 A partially exploded schematic diagram of the cover structure and the circuit board according to the embodiment from another perspective is shown;

[0012] Figure 5 Shown in accordance with Figure 1 A partially sectional schematic diagram of the light-emitting device according to the embodiment along the section line 5-5; and

[0013] Figure 6 Shown in accordance with Figure 1 A partially sectional schematic diagram of the light-emitting device according to the embodiment along the section line 6-6.

[0014] Description of the Main Component Symbols:

[0015] 1000 Light-emitting device

[0016] 1100 Base

[0017] 1110 Heat dissipation structure

[0018] 1200 Housing

[0019] 1210 Perforation

[0020] 1220 Fixing part

[0021] 1300 Circuit board

[0022] 1310 Light-emitting element

[0023] 1320 Groove

[0024] 1321 Intermediate area

[0025] 1322 Oblique angle area

[0026] 1331 Positioning hole

[0027] 1332 Engaging hole

[0028] 1400 Cover structure

[0029] 1410 First cover

[0030] 1411 First arc part

[0031] 1412 First retaining wall part

[0032] 1413 Positioning post

[0033] 1414 Engaging hook

[0034] 1420 Second cover

[0035] 1421 Second arc part

[0036] 1422 Second retaining wall part

[0037] 1423 Positioning groove

[0038] 1430 Opening

[0039] 1500 Frame

[0040] 1600 Light guide element

[0041] 1610 Oblique angle part

[0042] 1620 Receiving groove

[0043] 1700 Light-shielding sheet

[0044] C Oblique angle thickness

[0045] d1 Spacing distance

[0046] d2 Light guide distance

[0047] E1 light output direction

[0048] I1 installation direction

[0049] L1 reflected light path

[0050] T light guiding thickness

[0051] Lengths of w1 and w2

[0052] w3 light guiding width

[0053] X, Y, and Z axes

[0054] θ diffusion angle Detailed implementation manners

[0055] Please refer to Figure 1 and Figure 2 , wherein Figure 1 FIG. shows a perspective view of a light emitting device 1000 according to an embodiment of the present invention, Figure 2 FIG. shows a partially exploded view of the light emitting device 1000 according to Figure 1 the embodiment. As shown in FIGS. and Figure 1 and Figure 2 , the light emitting device 1000 includes a base 1100, a housing 1200, a circuit board 1300, a first cover 1410, and a second cover 1420. The housing 1200 is covered on the base 1100 along an installation direction I1 (as shown in Figure 1 , the installation direction I1 is parallel to the Y-axis) to form an accommodation space, and the housing 1200 has a through hole 1210. The circuit board 1300 is disposed in the accommodation space and includes a light emitting element 1310, wherein the light emitting element 1310 is used to emit a light ray along a light output direction E1 (as shown in Figure 1 , the light output direction E1 is parallel to the Z-axis) to the through hole 1210. There is a spacing distance d1 (marked in Figure 5 ) between the light emitting element 1310 and the through hole 1210, and the light output direction E1 is perpendicular to the installation direction I1. The first cover 1410 is located on a first side of the circuit board 1300. The second cover 1420 is located on a second side of the circuit board 1300 and forms a cover space (not labeled separately) with the first cover 1410, wherein the light emitting element 1310 is located in the cover space. The cover space has an opening 1430 (marked in Figure 3 ), and the opening 1430 corresponds to the through hole 1210.

[0056] When assembling the light-emitting device 1000, first, the first cover 1410 and the second cover 1420 are respectively disposed on the first side and the second side of the circuit board 1300. Then, the circuit board 1300 is installed on the base 1100. Finally, the housing 1200 is covered on the base 1100 along the installation direction I1, so that the circuit board 1300 is located in the accommodation space, and the opening 1430 corresponds to the through hole 1210 of the housing 1200. Through the cover space formed by the first cover 1410 and the second cover 1420, the light of the light-emitting element 1310 can be converged, preventing the light from being too divergent, and the light can be guided to the through hole 1210 to achieve a better light-emitting effect. Moreover, the spacing distance d1 between the light-emitting element 1310 and the through hole 1210 can prevent the housing 1200 from touching the circuit board 1300 during the installation process, and can provide a larger light-emitting space to increase the area of the light-emitting region, thereby enhancing the light-emitting efficiency. In this way, the manufacturing cost of the components can be reduced, and the design difficulty of different assembly directions and light-emitting directions can be reduced to solve the problem of light leakage easily caused by different assembly directions and light-emitting directions in known light-emitting devices. Thereby, the manufacturing cost can be reduced and the possibility of light leakage can be reduced. The structural details of the light-emitting device 1000 will be described in detail below.

[0057] Specifically, the shape of the housing 1200 can be a long cylindrical structure. The base 1100 can include a plurality of heat dissipation structures 1110 for dissipating heat from the circuit board 1300, where Figure 1 In an embodiment, the heat dissipation structure 1110 is a hole, but the present invention is not limited thereto. The light-emitting element 1310 includes a red-green-blue LED and a white LED, but the present invention is not limited thereto.

[0058] The first cover 1410 and the second cover 1420 can be made of an opaque material respectively. Further, the inner surfaces of the first cover 1410 and the second cover 1420 made of the opaque material can block the light emitted by the light-emitting element 1310 from penetrating through the first cover 1410 and the second cover 1420, avoiding the possibility of light leakage and concentrating the light. In other embodiments, the first cover and the second cover can be made of a light-transmitting material, but after the surfaces of the first cover and the second cover are processed, the first cover and the second cover respectively have opaque surfaces (inner surface or outer surface or both) to block the light emitted by the light-emitting element. However, the present invention is not limited thereto. Furthermore, the first cover 1410 and the second cover 1420 can also be made of a reflective material respectively. Further, the reflectivity of the reflective material can be greater than or equal to 60% and less than or equal to 100%. In other words, the inner surfaces of the first cover 1410 and the second cover 1420 can respectively have a reflectivity, and the reflectivity is between 60% and 100%. Thereby, the light emitted by the light-emitting element 1310 can be guided to the opening 1430 by reflection and emitted from the through hole 1210, thereby enhancing the brightness of the light emission. In other embodiments, a reflective coating can also be included, which is disposed on the inner surfaces of the first cover and the second cover to reflect the light of the light-emitting element. However, the present invention is not limited thereto.

[0059] Please refer to Figure 3 , which shows Figure 2 a three-dimensional schematic diagram of the cover structure 1400 and the circuit board 1300 according to an Figure 3 embodiment. As

[0060] shown, the second cover 1420 is detachably connected to the first cover 1410 to form a cover structure 1400 in combination, and the cover structure 1400 has a cover space.

[0060] Please also refer to Figure 1 and Figure 2 , the first cover 1410 includes a first arc portion 1411 and two first retaining wall portions 1412. The first arc portion 1411 is along the light source ( Figure 3In the embodiment, the light-emitting direction E1 of the light source (i.e., the light-emitting element 1310) extends from one end of the first cover 1410 to the other end of the first cover 1410 at a first arc angle. The first retaining wall portion 1412 is integrally connected to both sides of the first arc portion 1411. The second cover 1420 includes a second arc portion 1421 and two second retaining wall portions 1422. The second arc portion 1421 extends from one end of the second cover 1420 to the other end of the second cover 1420 at a second arc angle along the light-emitting direction E1, and the second arc portion 1421 corresponds to the first arc portion 1411. The second retaining wall portion 1422 is integrally connected to both sides of the second arc portion 1421. The width of the cover space gradually expands from the connection of the first arc portion 1411 and the second arc portion 1421 toward the opening 1430 along the light-emitting direction E1.

[0061] Specifically, a first retaining wall angle is formed between the two first retaining wall portions 1412, a second retaining wall angle is formed between the two second retaining wall portions 1422, and the first retaining wall angle is equal to the second retaining wall angle. Both the first retaining wall angle and the second retaining wall angle are obtuse angles, so that the overall shape of the cover structure 1400 is a concave structure, and the light of the light-emitting element 1310 can be reflected along the inner surface of the cover structure 1400 to the through hole 1210 to enhance the light-emitting brightness. In detail, the width of each first retaining wall portion 1412 gradually decreases from the end connected to the first arc portion 1411 toward the end away from the first arc portion 1411, the width of each second retaining wall portion 1422 gradually decreases from the end connected to the second arc portion 1421 toward the end away from the second arc portion 1421, the maximum width of the first cover 1410 is located at the first arc portion 1411, and the maximum width of the second cover 1420 is located at the second arc portion 1421. A part of the cover space formed by each first retaining wall portion 1412 and the corresponding second retaining wall portion 1422 is generally in the shape of a semi-cone, and another part of the cover space formed by the first arc portion 1411 and the second arc portion 1421 is generally in the shape of a semi-cylinder, but the present invention is not limited to the above shapes.

[0062] The circuit board 1300 may further include a groove 1320. The groove 1320 is located on the side of the circuit board 1300 close to the through hole 1210. The groove 1320 has a middle area 1321 and two beveled areas 1322. The two beveled areas 1322 are respectively connected to both ends of the middle area 1321, and a diffusion angle θ is formed between the two beveled areas 1322 (marked in Figure 5) The light-emitting element 1310 is disposed in the middle region 1321. Specifically, the diffusion angle θ can be greater than or equal to 80 degrees and less than or equal to 140 degrees, and corresponds to the first retaining wall angle and the second retaining wall angle, such that the outer edge of the beveled region 1322 can be aligned with the first retaining wall portion 1412 and the second retaining wall portion 1422. The middle region 1321 is located within the enclosure space formed by the first arc portion 1411 and the second arc portion 1421, such that the first enclosure 1410 and the second enclosure 1420 cover the light-emitting element 1310.

[0063] Please refer to Figure 4 , which shows Figure 2 an exploded view of the enclosure structure 1400 and the circuit board 1300 according to an embodiment from another perspective. As Figure 2 and Figure 4 shown, the first enclosure 1410 may include a snap-fit assembly (not labeled separately), and the snap-fit assembly is detachably snap-fitted to the circuit board 1300. Specifically, the snap-fit assembly may include two positioning posts 1413 and two snap hooks 1414. The circuit board 1300 may further include two positioning holes 1331 and two snap holes 1332, and the second enclosure 1420 includes two positioning grooves 1423. The positioning posts 1413 pass through the positioning holes 1331 to position the first enclosure 1410 on the circuit board 1300, and the positioning posts 1413 abut against the positioning grooves 1423, such that the first enclosure 1410 is connected to the second enclosure 1420 through the circuit board 1300. The snap hooks 1414 pass through the snap holes 1332 from the first side of the circuit board 1300 and abut against the second side of the circuit board 1300. Through the configuration of the snap-fit assembly, the first enclosure 1410 can be first snap-fitted to the circuit board 1300 through the snap hooks 1414, and after the positioning posts 1413 pass through the positioning holes 1331, the second enclosure 1420 is then installed on the circuit board 1300 from the second side of the circuit board 1300. The present invention is not limited to the above installation method. Thereby, the enclosure structure 1400 can be installed on the circuit board 1300 by means of snap-fitting and limiting, such that the enclosure structure 1400 can be removed and replaced from the circuit board 1300, thereby improving the assembly smoothness and enabling recycling. In other embodiments, the enclosure structure can be connected to the circuit board by means of adhesive or screwing to enhance the connection stability. The present invention is not limited thereto.

[0064] The light-emitting device 1000 may further include a housing 1500. The housing 1500 is connected to the circuit board 1300 and disposed on the base 1100, and the second cover 1420 is integrally formed with the housing 1500. A plurality of connecting components (not shown) may be disposed on the surface of the housing 1500 close to the circuit board 1300 to connect the circuit board 1300, and after being connected to the circuit board 1300, the housing 1500 may be mounted on the base 1100 together along the mounting direction I1. Specifically, both the housing 1500 and the second cover 1420 are die-castings made of a metal material and formed by die-casting, so as to reduce the number of mold openings. Moreover, by the heat conductivity of the metal, the heat generated by the circuit board 1300 can be introduced into the heat dissipation components of the base 1100 to enhance the heat dissipation effect. Another surface of the housing 1500 may be connected to other electronic components, but the present invention is not limited thereto. In other embodiments, the first cover, the housing, and the second cover may all be made of a plastic material or a metal material, and the present invention is not limited to the above materials.

[0065] Please refer to Figure 5 and Figure 6 , wherein Figure 5 illustrates a partial cross-sectional schematic view of the light-emitting device 1000 along the section line 5-5 according to Figure 1 the embodiment, Figure 6 and illustrates a partial cross-sectional schematic view of the light-emitting device 1000 along the section line 6-6 according to Figure 1 the embodiment. As Figure 5 shown, the length w1 of the middle region 1321 of the groove 1320 on the circuit board 1300 may be greater than the length w2 of the light-emitting element 1310, thereby improving the light-emitting brightness.

[0066] The light-emitting device 1000 may further include a light guide element 1600. The light guide element 1600 is disposed between the housing 1200 and the light-emitting element 1310 and covers the through hole 1210. Specifically, the light guide element 1600 may be a plastic part formed by injection molding with a diffusing agent added, or a diffusing film, to uniformly diffuse the light, but the present invention is not limited thereto. Two ends of the light guide element 1600 may respectively have an inclined angle portion 1610, and the width of the inclined angle portion 1610 tapers from the light-emitting element 1310 toward the through hole 1210. Through the configuration of the inclined angle portion 1610 of the light guide element 1600, the light emitted by the light-emitting element 1310 may follow a reflection optical path L1, first be reflected by the cover structure 1400, and then be reflected by the inclined angle portion 1610 toward the direction of the through hole 1210, thereby guiding the light to the outer edge of the through hole 1210 to enhance the light-emitting effect. Furthermore, the light guide element 1600 has a light guide thickness T along the light-emitting direction E1, and the inclined angle portion 1610 has an inclined angle thickness C along the light-emitting direction E1, and the ratio C / T of the inclined angle thickness C to the light guide thickness T is greater than or equal to 0.4 and less than 1. Thereby, the light guiding effect can be further enhanced.

[0067] As shown Figure 5 in the figure, there is a light guiding distance d2 between the light emitting element 1310 and the light guiding element 1600. The light guiding element 1600 has a light guiding width w3. The ratio w3 / d2 of the light guiding width w3 to the light guiding distance d2 can be greater than or equal to 1.65 and less than or equal to 5.5. Thereby, the effect of guiding light to the light guiding element 1600 can be further improved, and then the effect of the light guiding element 1600 diffusing light evenly can be improved.

[0068] As shown Figure 2 , Figure 5 and Figure 6 in the figure, the center of the light guiding element 1600 may have a receiving groove 1620. The light emitting device 1000 may further include a light shielding sheet 1700. The light shielding sheet 1700 is disposed on the receiving groove 1620 of the light guiding element 1600. The shapes of the receiving groove 1620 and the light shielding sheet 1700 correspond to the shape of the through hole 1210. The maximum length of the light shielding sheet 1700 is less than the maximum length of the through hole 1210. By the light shielding sheet 1700 blocking the light directly incident into the through hole 1210 by the light emitting element 1310 along the light emitting direction E1, and cooperating with the light guiding element 1600 to emit the light reflected by the cover body structure 1400 from the through hole 1210, a soft light effect can be further achieved.

[0069] As shown Figure 6 in the figure, the housing 1200 may further include a fixing portion 1220 protruding from the inner surface of the housing 1200 toward the cover body structure 1400. The fixing portion 1220 passes through a limiting hole (not labeled separately) of the light guiding element 1600, and then fixes the light guiding element 1600 on the housing 1200. In other embodiments, the light guiding element can be first heated to a molten state and disposed on the inner surface of the housing in a hot melt pressing manner, and is fixed to the housing after cooling, but the present invention is not limited thereto.

[0070] In other embodiments, the light emitting device may further include a sealing element (not shown in the figure). The sealing element is connected to the first cover body, the second cover body and the light guiding element, so that the sealing element covers the opening with the light guiding element. Specifically, the sealing element can be a foam member and is adhered to the outer edges of the first cover body, the second cover body and the light guiding element to seal the opening, thus further preventing light from leaking out of the cover body space, but the present invention is not limited thereto.

[0071] From the above embodiments, it can be seen that the light emitting device and the cover body structure provided by the present invention have the following advantages: First, through the cover body space formed by the first cover body and the second cover body, the problem of light leakage can be avoided. Second, through the configuration of the light guiding element, the light can be evenly diffused to achieve a soft light effect. Third, through the engaging component, the first cover body and the second cover body can be connected through the circuit board.

[0072] Although the present invention has been disclosed above in embodiments, it is not intended to limit the present invention. Any person skilled in the art should be able to make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be defined by the scope of the appended claims.

Claims

1. A light-emitting device, the light-emitting device comprises: a base; a housing, the housing is covered on the base along an installation direction to form an accommodating space, and the housing has a through hole; a circuit board, the circuit board is disposed in the accommodating space and includes a light-emitting element, wherein the light-emitting element is used to emit a light beam along a light-emitting direction to the through hole, there is a spacing distance between the light-emitting element and the through hole, and the light-emitting direction is perpendicular to the installation direction; a first cover, the first cover is located on a first side of the circuit board; and a second cover, the second cover is located on a second side of the circuit board and forms a cover space with the first cover, wherein the light-emitting element is located in the cover space, the cover space has an opening, and the opening corresponds to the through hole.

2. The light-emitting device according to claim 1, wherein the first cover and the second cover respectively have a light-impermeable surface.

3. The light-emitting device according to claim 1, wherein the first cover and the second cover are respectively made of a reflective material.

4. The light-emitting device according to claim 3, wherein the reflectivity of the reflective material is greater than or equal to 60% and less than or equal to 100%.

5. The light-emitting device according to claim 1, wherein the circuit board further includes a groove, the groove is located on a side of the circuit board close to the through hole, the groove has a middle region and two bevel regions, the two bevel regions are respectively connected to two ends of the middle region, a diffusion angle is formed between the two bevel regions, and the light-emitting element is disposed in the middle region.

6. The light-emitting device according to claim 5, wherein the length of the middle region is greater than the length of the light-emitting element.

7. The light-emitting device according to claim 5, wherein the diffusion angle is greater than or equal to 80 degrees and less than or equal to 140 degrees.

8. The light-emitting device according to claim 1, the light-emitting device further comprises: a light guide element, the light guide element is disposed between the housing and the light-emitting element and covers the through hole.

9. The light-emitting device according to claim 8, wherein there is a light guiding distance between the light-emitting element and the light guide element, the light guide element has a light guiding width, and the ratio of the light guiding width to the light guiding distance is greater than or equal to 1.65 and less than or equal to 5.

5.

10. The light-emitting device according to claim 8, wherein two ends of the light guide element respectively have a bevel portion, and the width of the bevel portion gradually decreases from the light-emitting element towards the through hole.

11. The light-emitting device according to claim 10, wherein the light guide element has a light guiding thickness along the light-emitting direction, the bevel portion has a bevel thickness along the light-emitting direction, and the ratio of the bevel thickness to the light guiding thickness is greater than or equal to 0.4 and less than 1.

12. The light-emitting device according to claim 8, the light-emitting device further comprises: a sealing element, the sealing element is connected to the first cover, the second cover and the light guide element, so that the sealing element and the light guide element cover the opening.

13. The light-emitting device according to claim 8, the light-emitting device further comprises: a light-shielding sheet, the light-shielding sheet is disposed on the light guide element, the shape of the light-shielding sheet corresponds to the shape of the through hole, and the maximum length of the light-shielding sheet is less than the maximum length of the through hole.

14. The light-emitting device as claimed in claim 1, wherein the first cover body includes a snap-fitting component, and the snap-fitting component is detachably snap-fitted to the circuit board.

15. The light-emitting device as claimed in claim 1, the light-emitting device further comprises: a frame body, the frame body is connected to the circuit board and disposed on the base, and the second cover body is integrally formed on the frame body.

16. A cover body structure, the cover body structure comprises: a first cover body, the first cover body includes: a first arc portion, the first arc portion extends from one end of the first cover body to the other end of the first cover body along a light-emitting direction of a light source at a first arc angle; and two first retaining wall portions, the two first retaining wall portions are respectively integrally connected to two sides of the first arc portion; and a second cover body, the second cover body is detachably connected to the first cover body, and includes: a second arc portion, the second arc portion extends from one end of the second cover body to the other end of the second cover body along the light-emitting direction at a second arc angle, the second arc portion corresponds to the first arc portion; and two second retaining wall portions, the two second retaining wall portions are respectively integrally connected to two sides of the second arc portion; wherein the first cover body and the second cover body form a cover body space, the cover body space has an opening, and the width of the cover body space gradually expands from the connection portion of the first arc portion and the second arc portion towards the opening along the light-emitting direction.

17. The cover body structure as claimed in claim 16, wherein a first retaining wall angle is formed between the two first retaining wall portions, a second retaining wall angle is formed between the two second retaining wall portions, and the first retaining wall angle is equal to the second retaining wall angle.

18. The cover body structure as claimed in claim 16, wherein the first cover body is connected to the second cover body through a circuit board.

19. The cover body structure as claimed in claim 16, wherein the first cover body and the second cover body cover a light-emitting element.

20. The cover body structure as claimed in claim 16, wherein the inner surfaces of the first cover body and the second cover body respectively have a reflectivity, and the reflectivity is greater than or equal to 60% and less than or equal to 100%.

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