Linear illumination device with optimized light source substrate structure

Abstract

To provide a linear illumination device equipped with an optimized light source substrate structure. [Solution] A linear illumination device with an optimized light source substrate structure includes a tubular globe, a support plate, and a light source substrate. 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 top of the light-shielding section has an upper 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 support plate is installed within the light-shielding section and is adjacent to the upper opening. The light source substrate is installed on one side of the support plate and faces the light-emitting section. The light source substrate includes a circuit board and at least one light source installed on the light source substrate. There is a first distance between a first plane passing through the center of the light source and a reference plane passing through the center of the circuit board. There is a second distance between the first plane and the tangent plane on the side of the light-emitting section adjacent to the light source. The ratio of the second distance to the first distance is 1.5 to 3.

Description

Technical Field

[0006] , ,

[0001] The present invention relates to a lighting device, particularly a linear lighting device having an optimized structure of a light source substrate.

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 easily affected by dark areas and easily generates light spots, which greatly affects the lighting effect of the lighting device.

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 having an optimized structure of a light source substrate.

Means for Solving the Problems

[0006] A linear lighting device is provided, comprising a tubular globe, a support plate, and a light source substrate, with an optimized light source substrate structure, based on one embodiment of the present invention. 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 support plate is installed within the light-shielding section and is adjacent to the upper opening. The light source substrate is installed on one side of the support plate and faces the light-emitting section. The light source substrate includes a circuit board and at least one light source installed on the light source substrate. There is a first distance between a first plane passing through the center of the light source and a reference plane passing through the center of the circuit board. There is a second distance between the first plane and the tangent plane on the side of the light-emitting section adjacent to the light source. The ratio of the second distance to the first distance is 1.5 to 3. [Effects of the Invention]

[0007] Based on the above, a linear lighting device equipped with a light source substrate optimization structure according to an embodiment of the present invention can have the following advantages. According to an embodiment of the present invention, the linear lighting device has a special light source substrate optimization structure. With the aforementioned light source substrate optimization structure, all light rays emitted from the light source can be emitted from the light-emitting surface of the light-emitting part at an appropriate angle, the influence of dark areas can be greatly reduced, the generation of light spots can be avoided, and the lighting effect of the linear lighting device can be improved. In addition, the light efficiency of the linear lighting device 1 can also be effectively improved. [Brief explanation of the drawing]

[0008] [Figure 1] This is a perspective view of a linear illumination device equipped with a light source substrate optimization structure according to the first embodiment of the present invention. [Figure 2] This is a first cross-sectional view of a linear lighting device equipped with a light source substrate optimization structure according to the 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 light source substrate optimization 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 illumination device equipped with a light source substrate optimization structure according to the first embodiment of the present invention. [Figure 5] This is a perspective view of a linear illumination device equipped with a light source substrate optimization structure according to a second embodiment of the present invention. [Figure 6] This is an exploded view of a linear illumination device equipped with a light source substrate optimization structure according to a second embodiment of the present invention. [Figure 7] This is a side view of the base of a linear illumination device equipped with a light source substrate optimization 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 in a linear lighting device equipped with a light source substrate optimization 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 light source substrate optimization structure according to a second embodiment of the present invention. [Figure 10] This is a first explanatory diagram of the installation process for a linear lighting device equipped with a light source substrate optimization structure according to a second embodiment of the present invention. [Figure 11] This is a first partial enlargement view of the K1 region in Figure 10. [Figure 12] This is a second enlarged view of the K1 region in Figure 10. [Figure 13] This is a cross-sectional view of a tubular globe of a linear lighting device equipped with a light source substrate optimization structure according to a third embodiment of the present invention. [Figure 14] This is an explanatory diagram of the light emission state of a tubular globe in a linear lighting device equipped with a light source substrate optimization structure according to the third embodiment of the present invention. [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 light source substrate optimization 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 coupling to that other component, or there may be an intermediary component. When a component is described as “directly connected” or “directly coupled” 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 light source substrate optimization structure according to the first embodiment of the present invention. Figure 2 is a first cross-sectional view of a linear lighting device equipped with a light source substrate optimization structure according to the 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 light source substrate optimization structure according to the 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 light source substrate optimization structure according to the 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 part 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, electric 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 part 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 part 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 above design of the built-in power supply module 14 not only improves the safety of the linear lighting device 1 but can 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 part 111 is larger than the width L2 at the upper part of the light shielding part 112, most of the light rays emitted by the light source substrate 12 can pass through the light emitting part 111 and will not be blocked by the light shielding part 112. Due to 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] Of course, this embodiment is only used for illustrative explanation and does not limit the scope of the present invention. Equivalent modifications or changes made based on the linear lighting device with the optimized structure of the light source substrate in this embodiment should still be included in the protection scope of the present invention.

[0018] Refer to Figures 5, 6, 7, 8, and 9, and also refer to Figures 1 to 4. Figure 5 is a perspective view of a linear lighting device equipped with a light source substrate optimization structure according to a second embodiment of the present invention. Figure 6 is an exploded view of a linear lighting device equipped with a light source substrate optimization structure according to a second embodiment of the present invention. Figure 7 is a side view of the base of a linear lighting device equipped with a light source substrate optimization structure according to a second embodiment of the present invention. Figure 8 is an explanatory diagram of the combination of the base and tubular globe of a linear lighting device equipped with a light source substrate optimization structure according to a second embodiment of the present invention. Figure 9 is an explanatory diagram of the electrical connection lines of a linear lighting device equipped with a light source substrate optimization structure according to a second 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 module 14, and two end covers 15.

[0019] Each of the above components is the same as in the above embodiment. The difference from the above embodiment is that in this example, the linear lighting device 1 further includes a base 16, two clips 17, and two safety ropes 18.

[0020] The base 16 has a central groove Cs. The tubular globe 11 is installed in the central groove Cs, closing the central groove Cs, positioning the light-shielding portion 112 within the central groove Cs, and exposing the light-emitting portion 111 from the central groove Cs. The base 16 may also have knockdown holes Bs at both ends. When connecting multiple linear lighting devices 1 in series, the covers of the multiple knockdown holes Bs can be removed. After that, electrical connection wires can pass through the knockdown holes Bs to electrically connect the multiple linear lighting devices 1.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] As described above, since the width of the bottom of the light-emitting section 111 is greater than the width of the top of the light-shielding section 112, most of the light rays emitted by the light source substrate 12 can pass through the light-emitting section 111 and are not blocked by the light-shielding section 112. With the optical structure design described above, the light loss of the light source substrate 12 can be effectively reduced, and the light efficiency of the linear illumination device 1 can be greatly improved.

[0025] Furthermore, electronic components such as the light source substrate 12 and power module 14 of the linear lighting device 1 are installed inside the tubular globe 11. The tubular globe 11 may be made of plastic, making the tubular globe 11 an all-plastic structure. This all-plastic structure effectively prevents the generation of reverse voltage, significantly improving the safety of the linear lighting device 1.

[0026] Furthermore, the power module 14 of the linear lighting device 1 is installed inside the tubular globe 11 and is not installed inside the power supply case; it may simply be covered with a plastic film. The above-described built-in power module design not only effectively prevents the generation of reverse voltage and improves safety, but also significantly simplifies the structure of the linear lighting device 1.

[0027] Furthermore, the aforementioned one-sided fixing structure eliminates the need for a separate fixing structure for the tubular globe 11, allowing it to be fixed to the base 16 and simplifying the structure of the tubular globe 11. In addition, the multiple clips 17 are not exposed in the central groove Cs, further simplifying the structure of the base 16. This structural design makes the linear lighting device 1 more convenient to transport and less susceptible to damage during transport.

[0028] Furthermore, the light source substrate 12 of the linear lighting device 1 is mounted on its support plate 13. The support plate 13 may be made of a highly thermally conductive material (various metals such as copper, iron, aluminum, and stainless steel) and is installed inside the tubular globe 11. Therefore, the support plate 13 not only provides a heat dissipation effect but also achieves a support function, thereby increasing the structural strength of the tubular globe 11. In addition, the light source substrate 12 may have a light-reflective coating to further improve light efficiency. In this way, the service life of the linear lighting device 1 can be effectively extended, light efficiency can be further improved, and the requirements of actual applications can be met.

[0029] Thus, the linear lighting device 1 is suitable for application to inverted Fuji-type (mountain-type) lighting devices and achieves high performance. The linear lighting device 1 can also be applied to various other conventional lighting devices.

[0030] Refer to Figures 10, 11, and 12, and also to Figures 1 to 9. Figure 10 is a first explanatory diagram of the mounting process of a linear lighting device equipped with a light source substrate optimization structure of a second embodiment of the present invention. Figure 11 is a first partial enlarged view of the K1 region of Figure 10. Figure 12 is a second partial enlarged view of the K1 region of Figure 10. As shown in Figure 10, 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.

[0031] As shown in Figure 11, 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).

[0032] As shown in Figure 12, 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.

[0033] 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.

[0034] Figure 13 is a cross-sectional view of a tubular globe of a linear lighting device equipped with a light source substrate optimization structure according to a third embodiment of the present invention. As shown in the figure, the light source substrate 12 includes a circuit board 121 and a plurality of light sources 122 provided on the light source substrate 121. The differences from the previously described embodiments are as follows: The linear lighting device 1 of this embodiment has a light source substrate optimization structure. The left side of the light source substrate 121 may have a group of light sources including a plurality of light sources 122 arranged in a straight line. Taking the light source 122 on the left side as an example, there is a first distance D1 between a first plane P1 passing through the center of the light source 122 and a reference plane P2 passing through the center of the circuit board 121. There is a second distance D2 between the first plane P1 and the tangent plane P3 on the side adjacent to the light source 122 of the light-emitting unit 111.

[0035] The light source substrate 121 may have a group of light sources on its right side, including a plurality of light sources 122 arranged in a straight line. Taking the light sources 122 on the right side as an example, there is a first distance D1 between the first plane P1' passing through the center of the light source 122 and the reference plane P2 passing through the center of the circuit board 121. There is a second distance D2 between the first plane P1' and the tangent plane P3' on the side of the light-emitting unit 111 adjacent to the light source 122. The first plane P1', the reference plane P2, and the tangent plane P3' are parallel to each other.

[0036] In one embodiment, the ratio of the second distance D2 to the first distance D1 may be 1.5 to 3, for example, 2.2. In another embodiment, the ratio of the second distance D2 to the first distance D1 may be 1.9 to 2.8, for example, 2.28. In yet another embodiment, the ratio of the second distance D2 to the first distance D1 may be 2.1 to 2.6, for example, 2.3. In this embodiment, the ratio of the second distance D2 to the first distance D1 is 2.16(26 / 12) to 2.5(20 / 8), for example, 2.32, 2.35, or 2.4. The first plane P1, the reference plane P2, and the tangent plane P3 are parallel to each other.

[0037] Figure 14 is an explanatory diagram of the light emission state of a tubular globe of a linear lighting device equipped with a light source substrate optimization structure according to the third embodiment of the present invention. As shown in the figure, the above-described light source substrate optimization structure allows all light rays emitted by the light sources 122 (indicated by arrow A4 in the figure) to be emitted from the light-emitting surface LS of the light-emitting section 111 at an appropriate angle, significantly reducing the influence of dark areas, avoiding the generation of light spots, and improving the illumination effect of the linear lighting device 1. Furthermore, the light efficiency of the linear lighting device 1 can also be effectively improved.

[0038] 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 having the light source substrate optimization structure of these embodiments should still be within the scope of protection of the present invention.

[0039] In summary, based on embodiments of the present invention, the linear illumination device has a special light source substrate optimization structure. This light source substrate optimization structure allows all light rays emitted from the light source to be emitted from the light-emitting surface of the light-emitting section at an appropriate angle, significantly reducing the influence of dark areas, avoiding the generation of light spots, and improving the illumination effect of the linear illumination device. Furthermore, the light efficiency of the linear illumination device 1 can also be effectively improved.

[0040] 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]

[0041] 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 LS luminescent surface Cs central groove Rs Groove Bs Knockdown Hole Gs mounting holes Es entrance 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 A4 Arrow P1 1st plane P1' 1st plane P2 reference plane P3 tangent plane P3' tangent plane D1 1st distance D2 2nd distance

Claims

1. A tubular globe having a light-emitting part and a light-shielding part, wherein 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 is installed within the light-shielding section and is adjacent to the upper opening, A light source substrate is installed on one side of the support plate and facing the light-emitting part, Includes, The linear lighting device features a light source substrate optimization structure characterized in that the light source substrate includes a circuit board and at least one light source installed on the light source substrate, has a first distance between a first plane passing through the center of the light source and a reference plane passing through the center of the circuit board, has a second distance between the first plane and a tangent plane on the side of the light-emitting portion adjacent to the light source, and the ratio of the second distance to the first distance is 1.5 to 3.

2. A linear lighting device equipped with a light source substrate optimization structure according to claim 1, characterized in that the ratio of the second distance to the first distance is 1.9 to 2.

8.

3. A linear lighting device equipped with a light source substrate optimization structure according to claim 1, characterized in that the ratio of the second distance to the first distance is 2.1 to 2.

6.

4. A linear lighting device comprising the light source substrate optimization structure according to claim 1, characterized in that the light source is adjacent to the lower opening at the bottom of the light-emitting section.

5. The linear lighting device comprising the light source substrate optimization structure according to claim 1, characterized in that the tubular globe is formed of plastic.

6. A linear lighting device comprising a light source substrate optimization structure according to claim 1, further including a power supply module, wherein the power supply module is installed on the other side of the support plate, located within the light shielding portion, and electrically connected to the light source substrate.

7. A linear lighting device comprising the light source substrate optimization structure according to claim 1, further comprising a base, wherein the tubular globe is installed on the base.

8. A linear lighting device comprising a light source substrate optimization structure according to claim 7, 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.

9. A linear lighting device comprising a light source substrate optimization structure according to claim 8, further including a clip, the clip being U-shaped and including 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 the clip being fixed to the light shielding portion.

10. The linear lighting device comprising the light source substrate optimization structure according to claim 8, wherein the bottom of the central groove further has a mounting hole, and the mounting hole has the shape of a keyhole.

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