Linear lighting device with afterglow prevention grounding structure

Abstract

The present invention provides a linear lighting device equipped with a grounding structure to prevent afterglow. [Solution] A linear illumination device equipped with a grounding structure to prevent afterglow includes a tubular globe, a support plate, a light source substrate, and a power module. The tubular globe has a light-emitting section and a light-shielding section. The light-emitting surface of the light-emitting section is curved. The bottom of the light-emitting section has a bottom opening, and the top of the light-shielding section has an top opening. The bottom of the light-emitting section is connected to the top of the light-shielding section, and the width of the bottom of the light-emitting section is greater than the width of the top of the light-shielding section. The tubular globe is made of plastic. The support plate is adjacent to the upper opening and has a grounding hole. The support plate is installed within the light-shielding section, with the grounding hole located inside a tubular globe made of plastic. The light source substrate is installed on one side of the support plate and faces the light-emitting section. The power module is installed on the other side of the support plate, located within the light-shielding section, and is electrically connected to the grounding hole and the light source substrate.

Description

Technical Field

[0001] The present invention relates to a lighting device, particularly a linear lighting device provided with a residual light prevention grounding structure.

Background Art

[0002] The reverse Fuji type (mountain type) lighting device has a unique shape and lighting characteristics, and the main feature is the design of a triangular base or an inverted conical base. The above design is advantageous for uniform distribution of light rays and can efficiently utilize space, so it is widely applied to various buildings.

[0003] However, the conventional reverse Fuji type lighting device still has many drawbacks to be improved. For example, in the optical structure of the conventional reverse Fuji type lighting device, part of the light generated by the light source substrate is lost, which greatly reduces the light efficiency of the lighting device.

[0004] In addition, the conventional reverse Fuji type lighting device is likely to generate a coupling loop due to structural limitations, causing the occurrence of the residual light phenomenon.

Summary of the Invention

Problems to be Solved by the Invention

[0005] An object of the present invention is to provide a linear lighting device provided with a residual light prevention grounding structure.

Means for Solving the Problems

[0006] A linear lighting device is provided, based on one embodiment of the present invention, which includes a tubular globe, a support plate, a light source substrate, and a power supply module, and is equipped with a residual light prevention grounding structure. The tubular globe has a light-emitting section and a light-shielding section. The light-emitting surface of the light-emitting section is curved. The bottom of the light-emitting section has a lower opening, and the upper part of the light-shielding section has an upper opening. The bottom of the light-emitting section is connected to the upper part of the light-shielding section, and the width of the bottom of the light-emitting section is greater than the width of the upper part of the light-shielding section. The tubular globe is made of plastic. The support plate is adjacent to the upper opening and has a grounding hole. The support plate is installed inside the light-shielding section, and the grounding hole is located inside the tubular globe, which is made of plastic. The light source substrate is installed on one side of the support plate and faces the light-emitting section. The power supply module is installed on the other side of the support plate, is located inside the light-shielding section, and is electrically connected to the grounding hole and the light source substrate. [Effects of the Invention]

[0007] Based on the above, a linear lighting device equipped with a grounding structure to prevent afterglow according to an embodiment of the present invention has the following advantages. According to an embodiment of the present invention, the linear lighting device employs a design that includes a grounding structure to prevent the afterglow phenomenon. This structural design requires only providing a grounding hole inside a tubular globe made of plastic and connecting the live line and neutral line to the lighting device, and does not require connecting an earth wire. Such a structure effectively prevents the formation of coupling loops between the light source substrate and the metal component, and further prevents the occurrence of the afterglow phenomenon. This excellent structural design not only improves the overall performance of the linear lighting device, but also significantly improves its luminous efficiency and quality, and ensures that afterglow problems do not occur during use. [Brief explanation of the drawing]

[0008] [Figure 1] This is a perspective view of a linear lighting device equipped with a afterglow prevention grounding structure according to a first embodiment of the present invention. [Figure 2] This is a first cross-sectional view of a linear lighting device equipped with a afterglow prevention grounding structure according to a first embodiment of the present invention (without support plate, light source substrate, and power supply module). [Figure 3]This is a second cross-sectional view of a linear lighting device equipped with a afterglow prevention grounding structure according to the first embodiment of the present invention (with support plate, light source substrate and power supply module). [Figure 4] This is a third cross-sectional view of a linear lighting device equipped with a afterglow prevention grounding structure according to a first embodiment of the present invention. [Figure 5] This is a perspective view of a linear lighting device equipped with a afterglow prevention grounding structure according to a second embodiment of the present invention. [Figure 6] This is an exploded view of a linear lighting device equipped with a afterglow prevention grounding structure according to a second embodiment of the present invention. [Figure 7] This is a side view of the base of a linear lighting device equipped with a afterglow prevention grounding structure according to a second embodiment of the present invention. [Figure 8] This is an explanatory diagram of the combination of a base and a tubular globe of a linear lighting device equipped with a afterglow prevention grounding structure according to a second embodiment of the present invention. [Figure 9] This is an explanatory diagram of the electrical connection lines of a linear lighting device equipped with a afterglow prevention grounding structure according to a second embodiment of the present invention. [Figure 10] This is an explanatory diagram of the grounding structure of the support plate of a linear lighting device equipped with a afterglow prevention grounding structure according to a second embodiment of the present invention. [Figure 11] This is a first explanatory diagram of the installation process for a linear lighting device equipped with a afterglow prevention grounding structure according to a second embodiment of the present invention. [Figure 12] This is a first partial enlarged view of the K1 region in Figure 11. [Figure 13] This is a second enlarged view of the K1 region in Figure 11. [Modes for carrying out the invention]

[0009] The following embodiments describe the detailed features and advantages of the present invention, which are sufficient to enable those skilled in the art to understand and implement the technical aspects of the invention, and which, through the disclosures, claims, and drawings herein, will be readily understood by those skilled in the art.

[0010] The following describes embodiments of a linear lighting device equipped with the afterglow prevention grounding structure of the present invention, with reference to the relevant drawings. For clarity and ease of illustration, the dimensions and proportions of the components in the drawings may be exaggerated or reduced. In the following description and / or claims, when a component is described as “connected” or “joined” to another component, it may be a direct connection or joining to that other component, or there may be an intermediary component. When a component is described as “directly connected” or “directly joined” to another component, there is no intermediary component, and other terms used to describe relationships between components or layers should be interpreted similarly. For ease of understanding, the same components in the following embodiments are denoted by the same reference numerals.

[0011] Refer to Figures 1, 2, and 3. Figure 1 is a perspective view of a linear lighting device equipped with a afterglow prevention grounding structure according to a first embodiment of the present invention. Figure 2 is a first cross-sectional view of a linear lighting device equipped with a afterglow prevention grounding structure according to a first embodiment of the present invention (without support plate, light source substrate, and power supply module). Figure 3 is a second cross-sectional view of a linear lighting device equipped with a afterglow prevention grounding structure according to a first embodiment of the present invention (with support plate, light source substrate, and power supply module). Figure 4 is a third cross-sectional view of a linear lighting device equipped with a afterglow prevention grounding structure according to a first embodiment of the present invention. As shown in the figures, the linear lighting device 1 comprises a tubular globe 11, a light source substrate 12, a support plate 13, a power supply module 14, and two end covers 15.

[0012] The tubular globe 11 has a light-emitting section 111 and a light-shielding section 112. The two end caps 15 are installed at both ends of the tubular globe 11, respectively. In this embodiment, the tubular globe 11 is an all-plastic structure made of plastic (this material may be various conventional plastic materials, such as PMMA or PC, but is not limited to these). The light-emitting surface LS of the light-emitting section 111 is curved. The bottom of the light-emitting section 111 has a bottom opening, and the top of the light-shielding section 112 has an top opening. The light-shielding section 112 has two grooves Rs installed on both sides thereof. The bottom of the light-emitting section 111 is connected to the top of the light-shielding section 112. Also, the width L1 of the bottom of the light-emitting section 111 is greater than the width L2 of the top of the light-shielding section 112. The all-plastic structure described above can effectively prevent the generation of reverse voltage, and the safety of the linear lighting device 1 can be greatly improved.

[0013] The support plate 13 is installed inside the light-shielding section 112 and is adjacent to the upper opening. The cross-section of the support plate 13 is U-shaped, and both sides of the support plate 13 are fixed to the two inner walls of the light-shielding section 112, respectively. Each inner wall has an L-shaped hook section V1 and a position-regulating plate V2. The position-regulating plate V2 is installed above the L-shaped hook section V1. Two L-shaped hook sections V1 are embedded in each side of the support plate 13, and the two position-regulating plates V2 provide a position-regulating function, preventing the support plate 13 from detaching from the two L-shaped hook sections V1. The support plate 13 may be made of a material with high thermal conductivity. This material may be various metals such as copper, iron, aluminum, or stainless steel. Therefore, the support plate 13 can not only provide a heat dissipation effect but also achieve a support function and increase the structural strength of the tubular globe 11.

[0014] The light source substrate 12 is installed on one side of the support plate 13 and faces the light emitting portion 111. The light source substrate 12 may include a circuit board 121 and a plurality of light sources 122, and the plurality of light sources 122 are installed on the circuit board 121. In this embodiment, the plurality of light sources 122 described above may be light emitting diodes (LEDs). In another embodiment, the light source substrate 12 may be replaced with other light emitting units (such as fluorescent lamps, light bulbs, etc.). The light source substrate 12 further has a light reflecting paint on it, which can provide a light reflecting effect and improve the light efficiency.

[0015] The power supply module 14 is installed on the other side of the support plate 13 and is located within the light shielding portion 112. The power supply module 14 is electrically connected to the light source substrate 12. The power supply module 14 can be directly installed on the light shielding portion 112 and does not require a separate power supply case. Also, the power supply module 14 may only be covered with a plastic film. In one embodiment, the power supply module 14 is a light emitting diode driver. In another embodiment, the power supply module 14 may be a driver for other conventional light sources. The design of the built-in power supply module 14 described above can not only improve the safety of the linear lighting device 1, but also greatly simplify the structure of the linear lighting device 1.

[0016] From the above, since the width L1 at the bottom of the light emitting portion 111 is larger than the width L2 at the upper part of the light shielding portion 112, most of the light rays emitted by the light source plate 12 can pass through the light emitting portion 111 and will not be blocked by the light shielding portion 112. Through the above optical structure design, the light loss of the light source substrate 12 can be effectively reduced, and the light efficiency of the linear lighting device 1 can be greatly improved.

[0017] Refer to FIGS. 5, 6, 7, 8 and 9, and also refer to FIGS. 1 to 4 at the same time. FIG. 5 is a perspective view of a linear lighting device with a residual light prevention grounding structure according to the second embodiment of the present invention. FIG. 6 is an exploded view of a linear lighting device with a residual light prevention grounding structure according to the second embodiment of the present invention. FIG. 7 is a side view of a base of a linear lighting device with a residual light prevention grounding structure according to the second embodiment of the present invention. FIG. 8 is an explanatory view of a combination of a base and a tubular globe of a linear lighting device with a residual light prevention grounding structure according to the second embodiment of the present invention. FIG. 9 is an explanatory view of an electrical connection wire of a linear lighting device with a residual light prevention grounding structure according to the second embodiment of the present invention. As shown in the figures, the linear lighting device 1 includes a tubular globe 11, a light source substrate 12, a support plate 13, a power module 14, and two end caps 15.

[0018] Each of the above components is the same as in the above embodiment. The difference from the foregoing embodiment is that in this embodiment, the linear lighting device 1 further includes a base 16, two clips 17, and two safety ropes 18.

[0019] The base 16 has a central groove Cs. The tubular globe 11 is installed in the central groove Cs, closes the central groove Cs, positions the light shielding portion 112 within the central groove Cs, and exposes the light emitting portion 111 from the central groove Cs. Further, both ends of the base 16 may have knockdown holes Bs. When connecting a plurality of linear lighting devices 1 in series, the covers of the plurality of knockdown holes Bs can be removed. Thereafter, the electrical connection wire can pass through the knockdown holes Bs to electrically connect the plurality of linear lighting devices 1.

[0020] The two clips 17 described above may be made of a metal material such as copper, iron, aluminum, or stainless steel. Each clip 17 is U-shaped and includes a base plate 171, two side walls 172, and two protrusions 173. The base plate 171 is fixed to the bottom of the central groove Cs, and the two protrusions 173 are respectively installed on the two side walls 172. Each clip 17 is not exposed to the central groove Cs. As described above, the light-shielding portion 112 has two grooves Rs, each installed on either side of the light-shielding portion 112, and the two protrusions 173 are respectively inserted into the two grooves Rs, fixing the clips 17 and the light-shielding portion 112 together. In this way, the tubular globe 11 is fixed to the base 16 via the two clips 17. The number of clips 17 can be adjusted according to actual requirements. In another embodiment, the linear illumination device 1 may include only one clip 17 or three or more clips 17. Due to the aforementioned one-sided locking structure, the tubular globe 11 can be fixed to the base 16 without the need to install a fixing structure, thereby simplifying the structure of the tubular globe 11. Furthermore, the multiple clips 17 are not exposed in the central groove Cs, further simplifying the structure of the base 16. With the above structural design, the linear lighting device 1 becomes more convenient to transport and less susceptible to damage during transport.

[0021] The two end covers 15 are provided at both ends of the tubular globe 11 and are connected to both ends of the base 16 via the two safety ropes 18. The two end covers 15 provide waterproofing and dustproofing, improving the safety and service life of the linear lighting device 1.

[0022] The linear lighting device 1 further includes an electrical connection line 19 and a connection terminal 20. The power module 14 is connected to the electrical connection line 19, which passes through a connection hole and then connects to the connection terminal 20. The connection hole is located near one end cover 15. A sealing ring SR (such as a rubber ring) can be installed in this connection hole to achieve waterproof and dustproof effects. The connection terminal 142 can be installed on the back of the tubular globe 11. In this embodiment, the electrical connection line 19 can be fixed to the back of the tubular globe 11 by tape TP or other similar methods, but is not limited thereto.

[0023] Figure 10 is an explanatory diagram of the grounding structure of a support plate of a linear lighting device equipped with a afterglow prevention grounding structure according to a second embodiment of the present invention. As shown in the figure, the support plate 13 may also be provided with a grounding hole GH. The power module 14 is electrically connected to the grounding hole GH. In this embodiment, the linear lighting device 1 further includes a grounding connection member GX. The grounding connection member GX is fixable to the grounding hole GH. The power module 14 is electrically connected to the grounding connection member GX via a conductor Wr. The grounding connection GX may be a removable member. For example, the grounding connection member GX may be a screw, bolt or other similar member. The support plate 13 is installed within the light-shielding section 112, positioning the grounding hole GH inside a tubular globe 11 made of plastic. Only the live wire and neutral wire need to be connected; the ground wire is not connected.

[0024] In this embodiment, the grounding hole GH can be located at a position that passes through the center line ML of the support plate 13 (this center line ML is parallel to the long side of the support plate 13). The grounding hole GH may be adjacent to one end of the support plate 13 and the power module 14. In another embodiment, the grounding hole GH may not pass through the center line ML of the support plate 13, but may be located adjacent to either of the long sides of the support plate 13. The position of the grounding hole GH can be changed as needed, and the present invention is not limited thereto.

[0025] With the design of the grounding structure described above, the grounding hole GH is located inside the tubular globe 11 made of plastic, and only the live wire and neutral wire need to be connected, without the earth wire being connected, which effectively prevents the formation of coupling loops between the light source substrate 12 and the metal component. In this way, the linear lighting device 1 can prevent the occurrence of afterglow phenomena, and thus its performance can be greatly improved.

[0026] Refer to Figures 11, 12, and 13, and also to Figures 1 to 10. Figure 11 is a first explanatory diagram of the installation process of a linear lighting device equipped with a afterglow prevention grounding structure according to a second embodiment of the present invention. Figure 12 is a first partial enlarged view of the K1 region in Figure 11. Figure 13 is a second partial enlarged view of the K1 region in Figure 11. As shown in Figure 11, the bottom of the central groove Cs of the base 16 further has mounting holes Gs, and the mounting holes Gs may be in the shape of a keyhole.

[0027] As shown in Figure 12, the user can first fix the fixing member FX (screw, nail, or other similar member) to the ceiling. Then, the user can place the base 16 on the ceiling, align the mounting holes Gs with the fixing member FX, and insert the head of the fixing member into one end of the mounting holes Gs. After that, the user can push the base 16 and move it toward the other end of the mounting holes Gs (arrow A1 in the figure).

[0028] As shown in Figure 13, the base 16 then moves toward the other end of the mounting hole Gs, causing the head of the fixing member FX to enter the other end of the mounting hole Gs. In this way, the user can fix the base 16 to the ceiling via the fixing member 16 and fix both ends of the base 16 to the ceiling via the other fixing members FX.

[0029] Without the design of mounting holes Gs, the user would first need to fix one end of the base 16 to the ceiling, while the other end of the base 16 would need to be grasped by another installer, making installation extremely inconvenient. The design of mounting holes Gs allows the user to temporarily fix the base 16 to the ceiling and then fix both ends of the base 16, thus making the installation process more convenient and saving effort.

[0030] The above embodiments are for illustrative purposes only and do not limit the scope of the present invention. Equivalent modifications or changes made based on the linear illumination device with the afterglow prevention grounding structure of these embodiments should still be within the scope of protection of the present invention.

[0031] In summary, based on embodiments of the present invention, the linear lighting device employs a design that includes a grounding structure to prevent afterglow. This structural design requires only connecting the live and neutral wires to the lighting device by providing a grounding hole inside a tubular globe made of plastic, and does not require connecting an earth wire. This structure effectively prevents the formation of coupling loops between the light source substrate and the metal component, and further prevents the occurrence of afterglow. This superior structural design not only improves the overall performance of the linear lighting device but also significantly improves its luminous efficiency and quality, ensuring that afterglow problems do not occur during use.

[0032] While the embodiments described herein are explained, it should be noted that this does not limit the scope of the claims of the present invention. Therefore, any changes and modifications to the embodiments described herein, or substitution of equivalent structures or processes using the contents of the specification and drawings of the present invention, or direct or indirect application of the above-described technology to other related technical fields, based on the innovative concept of the present invention, are all included within the scope of the claims of the present invention. [Explanation of Symbols]

[0033] 1. Linear lighting device 11 Tubular Globe 111 Light-emitting part 112 Light-shielding part 12 Light source substrate 121 Circuit board 122 Light source 13 Support plate 14 Power Modules 15 End cover 16 Bass 17 clips 171 Bottom plate 172 Side wall 173 Protrusion 18 Safety rope 19. Electrical connection wires 20 connection terminals V1 L-shaped hook section V2 position regulation plate TP Tape SR Seal Ring FX Fixing Components GX Grounding Connection Member Wr conductor LS luminescent surface Cs central groove Rs Groove Bs Knockdown Hole Gs mounting holes Es entrance GH ground hole K1 area K2 area L1 Width of the bottom of the light-emitting part L2 Width of the upper part of the light-blocking section A1 Arrow ML support plate centerline

Claims

1. A tubular globe made of plastic has a light-emitting part and a light-shielding part, the light-emitting surface of the light-emitting part is curved, the bottom of the light-emitting part has a lower opening, the top of the light-shielding part has an upper opening, the bottom of the light-emitting part is connected to the top of the light-shielding part, and the width of the bottom of the light-emitting part is greater than the width of the top of the light-shielding part. A support plate adjacent to the upper opening, having a grounding hole, installed within the light-shielding portion, and positioning the grounding hole inside the tubular globe made of plastic, A light source substrate is installed on one side of the support plate and facing the light-emitting part, A power supply module is installed on the other side of the support plate, located within the light-shielding portion, and electrically connected to the grounding hole and the light source substrate, A linear lighting device equipped with a grounding structure that prevents afterglow, characterized by including the following features.

2. A linear lighting device equipped with a residual light prevention grounding structure according to claim 1, further comprising the grounding connection member, wherein the grounding connection member is fixed in the grounding hole, and the power module is electrically connected to the grounding connection member via a conductor.

3. The linear lighting device equipped with the afterglow prevention grounding structure according to claim 1, characterized in that the grounding connection member is removable.

4. A linear lighting device equipped with a residual light prevention grounding structure according to claim 1, characterized in that the center line of the support plate penetrates the grounding hole.

5. The linear lighting device equipped with a afterglow prevention grounding structure according to claim 4, characterized in that the center line of the support plate is parallel to the long side of the support plate.

6. A linear lighting device having a residual light prevention grounding structure according to claim 1, further comprising a base, wherein the tubular globe is installed on the base.

7. The linear lighting device with a residual light prevention grounding structure according to claim 6, characterized in that the base has a central groove, the tubular globe is installed on the central groove, closes the central groove, positions the light-shielding portion within the central groove, and exposes the light-emitting portion from the central groove.

8. Linear lighting device with afterglow prevention grounding structure according to claim 7, further comprising a clip, the clip being U-shaped and comprising a base plate, two side walls and two protrusions, the base plate being fixed to the bottom of the central groove, the two protrusions being installed on the two side walls respectively, the light-shielding portion having two grooves installed on both sides of the light-shielding portion, the two protrusions being embedded in the two grooves respectively, and fixing the clip to the light-shielding portion.

9. The linear lighting device equipped with the afterglow prevention grounding structure according to claim 7, characterized in that the bottom of the central groove further has mounting holes.

10. The linear lighting device equipped with a residual light prevention grounding structure according to claim 9, characterized in that the mounting hole has the shape of a keyhole.

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