Lighting device

Abstract

To provide a lighting device that comprises a plurality of split light emitting units, prevents the size and weight of the light emitting unit or a cover or chassis for the light emitting unit from increasing, and can reduce glare without changing brightness.SOLUTION: The present disclosure comprises a plurality of split light emitting units and a central part connected to each of the plurality of light emitting units.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a lighting device.

Background Art

[0002] In a device such as a ceiling light, in order to reduce glare without changing the brightness, it is necessary to expand the area of the light-emitting part and lower the luminance of the light-emitting part. As a method of reducing glare in a device such as a normal ceiling light, a method of simply expanding a circular or square light-emitting part to increase the area of the light-emitting part is used.

[0003] For example, in Patent Document 1, a lighting device is disclosed that includes a first light distribution part and a second light distribution part and has spectral radiation characteristics in which the correlated color temperature of light is 5400K or more and 7000K or less, Duv is -6 or more and 5 or less, the chroma value is 2.7 or less, and the average color rendering evaluation number Ra is 80 or more.

[0004] In Patent Document 2, a lighting fixture is disclosed that includes a high-intensity lamp, a reflector, and a glare cut cap having an auxiliary reflector, the auxiliary reflector has a parabolic auxiliary reflecting surface that focuses on the center of the high-intensity lamp, and the axis of the auxiliary reflecting surface is inclined in a range of more than 0° and less than 90° with respect to the central axis of the high-intensity lamp.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, simply increasing the surface area of ​​the light-emitting part to reduce glare without changing the brightness would make installation difficult because the larger the light-emitting part becomes, as it increases in size and weight. Also, as the surface area of ​​the light-emitting part increases, the size of the cover and chassis for the light-emitting part also increases, resulting in larger mold sizes and higher mold costs, as well as higher component prices. Furthermore, for example, in patients who have undergone cataract surgery and are using intraocular lenses, the glare from the light-emitting part can cause significant discomfort.

[0007] Therefore, in view of the above problems, this disclosure provides a lighting device that includes multiple divided light-emitting units, without increasing the size or weight of the light-emitting units, covers for the light-emitting units, chassis, etc., and without changing the brightness, and that can reduce glare. [Means for solving the problem]

[0008] One aspect of this disclosure is characterized by comprising a plurality of divided light-emitting sections and a central section connected to each of the plurality of light-emitting sections. [Effects of the Invention]

[0009] As described above, this disclosure provides a lighting device that includes multiple divided light-emitting units, without increasing the size or weight of the light-emitting units, covers for the light-emitting units, chassis, etc., and without changing the brightness, thereby reducing glare. [Brief explanation of the drawing]

[0010] [Figure 1] Figure 1 is a schematic front view showing the lighting device according to this disclosure. [Figure 2] Figure 2 is a schematic front view showing the lighting device according to this disclosure. [Figure 3] Figure 3 is a schematic front view of a conventional lighting device. [Figure 4] Figure 4 is a schematic front view of a conventional lighting device. [Figure 5] Figure 5 is a front view of the lighting device according to this disclosure with the central cover attached. [Figure 6] Figure 6 is a side view of the lighting device according to this disclosure with the central cover attached. [Figure 7] Figure 7 is a side view showing how the light-emitting portion of the outer ring of the lighting device according to this disclosure is tilted downward. [Figure 8] Figure 8 is a side view of a lighting device equipped with a tilt prevention mechanism. [Figure 9] Figure 9 is a perspective view of a lighting device equipped with a retaining plate. [Figure 10] Figure 10 is a side view of a lighting device equipped with a retaining plate. [Figure 11A] Figure 11A is a magnified view of the area around the hook in Figure 10, showing the state before the hook supports the light-emitting part. [Figure 11B] Figure 11B is a magnified view of the area around the hook in Figure 10, showing the state after the hook supports the light-emitting part. [Figure 12] Figure 12 is a front view of a retaining plate with holes. [Modes for carrying out the invention]

[0011] Preferred embodiments of the present disclosure will be described in detail below with reference to the drawings. The embodiments described below are not intended to unduly limit the scope of the claims of the present disclosure, and not all configurations described in these embodiments are necessarily essential as solutions to the present disclosure. In the drawings, the X and Y axes represent the width direction, and the Z axis represents the height direction. The +Z direction represents the ceiling direction, and the -Z direction represents the floor direction.

[0012] Figures 1 and 2 are schematic front views of the lighting device 100 according to the present disclosure. As shown in Figures 1 and 2, the lighting device 100 according to the present disclosure comprises a light-emitting section 10 and a central section 20.

[0013] The light-emitting part 10 is divided into a plurality of parts. That is, the light-emitting part 10 itself does not increase in size, and a plurality of light-emitting parts 10 of the conventional size are combined. The lighting device 100 shown in FIG. 1 has the light-emitting part 10 divided into four parts, and includes the divided light-emitting parts 10a, 10b, 10c, and 10d. The lighting device 100 shown in FIG.  2 has the light-emitting part 10 divided into three parts, and includes the divided light-emitting parts 10a, 10b, and 10c.

[0014] As shown in FIG. 1, the divided light-emitting parts 10a, 10b, 10c, and 10d may be rectangular. Also, as shown in FIG. 2, the divided light-emitting parts 10a, 10b, and 10c may be circular.

[0015] As seen in the conventional lighting devices shown in FIGS. 3 and 4, in order to reduce glare without changing the brightness, it is conceivable to simply increase the area of the light-emitting part. However, in such a case, as the area of the light-emitting part increases, the device becomes larger and heavier, making it difficult to install the device. Also, as the area of the light-emitting part increases, the sizes of the cover, chassis, etc. for the light-emitting part increase, resulting in a larger mold size and higher mold costs. Also, the part prices become higher. As the area of the light-emitting part increases, the product packaging box also becomes larger, making transportation difficult. Also, when cataract surgery has been performed and an intraocular lens is being used, the glare of the light-emitting part leads to a great deal of discomfort. Furthermore, it is well known that the phenomenon of increased arousal occurs when in an environment with high illuminance. However, since the illuminance is generally lower indoors than outdoors, there is a problem that arousal does not improve when working indoors. If a lighting device such as a ceiling light is simply brightened to increase the illuminance indoors, the luminance of the light-emitting part increases, leading to discomfort.

[0016] Therefore, by providing multiple divided light-emitting units 10 and a central unit 20 that connects to each of the multiple light-emitting units 10, the brightness can be low and the illuminance high, reducing the discomfort caused by glare when the light enters the eyes. Also, since the size of the light-emitting units 10 themselves does not change, the size of the light-emitting units 10, the cover for the light-emitting units 10, and the chassis remain unchanged, preventing an increase in mold costs and thus preventing cost increases. Furthermore, since the lighting device 100 does not become larger or heavier, installation becomes easier. In addition, since the size of each component does not change, it is possible to prevent an increase in the size (bottom area) of the packaging box. Moreover, since the illuminance indoors is generally lower than outdoors, it is possible to solve the problem of insufficient alertness when working indoors.

[0017] Because the lighting device 100 according to this disclosure has the above-mentioned effects, it is particularly preferable to use it for intraocular lens users after cataract surgery, or for improving alertness for teleworkers or users of elderly care facilities.

[0018] The following provides further explanation of the light-emitting section 10, the central section 20, etc.

[0019] The lighting device 100 according to this disclosure increases the area of ​​the light-emitting unit 10 to ensure illumination while reducing the brightness of the light-emitting unit 10. To increase the area of ​​the light-emitting unit 10, multiple light-emitting units of conventional size are combined.

[0020] Furthermore, since the light-emitting unit 10 is divided into multiple sections and multiple conventionally sized light-emitting units 10 are combined, it is possible to prevent an increase in the size and weight of the light-emitting unit 10, its cover, and chassis, thereby preventing an increase in costs. The cover for the light-emitting unit 10 is a transparent cover that covers the light-emitting unit 10, and each of the divided sections of the light-emitting unit 10 is provided with a cover for the light-emitting unit 10.

[0021] The light-emitting unit 10 includes multiple light-emitting elements such as fluorescent lamps, LEDs (light-emitting diodes), and ELs (electroluminescence) for emitting light. It also includes a diffusion lens positioned in the direction of light emission from the LED.

[0022] The central unit 20 connects to each of the divided light-emitting units 10. In Figure 1, the central unit 20 connects to each of the four divided light-emitting units 10a, 10b, 10c, and 10d. In Figure 2, the central unit 20 connects to each of the three divided light-emitting units 10a, 10b, and 10c. The central unit 20 may include a power supply, etc. Since the central unit 20 connects to each of the multiple light-emitting units, it is possible to adjust the illuminance of each of the four divided light-emitting units 10a, 10b, 10c, and 10d.

[0023] The central unit 20 may include electronic components such as a control board, microcomputer, and dimming circuit components for adjusting the on / off status and illuminance of each of the four light-emitting units 10a, 10b, 10c, and 10d. The central unit 20 may also include a signal receiving unit for receiving signals from a signal transmitting unit such as a remote controller in order to remotely control the on / off status and other functions.

[0024] A preferred embodiment of the lighting device 100 according to this disclosure is described below.

[0025] Figure 5 is a front view of the lighting device 100 according to this disclosure with the central cover 30 attached. Figure 6 is a side view of the lighting device 100 according to this disclosure with the central cover 30 attached. As shown in Figures 5 and 6, it is preferable to provide the central cover 30 on the central part 20 of the lighting device 100 according to this disclosure. In this way, the lighting device 100 can have an aesthetic appearance. The central cover 30 is preferably made of a metal that dissipates heat easily, as it covers a power supply or the like that generates heat.

[0026] The lighting device 100 can be supported from the ceiling by using a support part 40, such as an adapter, that connects from the central part 20 to the ceiling. Furthermore, power can be supplied to the central part 20 via the support part 40. Conventional adapters can be used.

[0027] Figure 7 is a side view showing how the light-emitting parts 10 on the outer ring of the lighting device 100 according to this disclosure are tilted downward. As shown in Figure 7, multiple light-emitting parts 10 (10a, 10c) on the side opposite to the connection side with the central part 20 may tilt downward due to their own weight. Therefore, it is preferable to provide a tilt prevention mechanism 50 to prevent the multiple light-emitting parts 10 on the outer ring of the lighting device 100 from tilting downward.

[0028] Figure 8 is a side view of a lighting device 100 equipped with a tilt prevention mechanism 50. The tilt prevention mechanism 50 shown in Figure 8 comprises a connecting portion 51 that connects to each of the multiple light-emitting units 10, a connected portion 52 provided in the central portion 20 that receives the connecting portion 51, an adjustment screw 53 that passes through the connecting portion 51 in the vertical direction and adjusts and fixes the tilt of the multiple light-emitting units 10, and an adjustment screw receiver 54 that receives the adjustment screw 53. In this way, it is possible to prevent the light-emitting units 10 on the outer ring of the lighting device 100 from tilting downward.

[0029] The connected portion 52 is provided with a recess 52a capable of receiving the connecting portion 51. The connecting portion 51 is connected to each of the divided multiple light-emitting bodies. The connected portion 52 is not limited in shape as long as it can receive the connecting portion 51. The adjustment screw 53 passes through the connecting portion 51 in the vertical direction (Z direction). By rotating the adjustment screw 53, the angle of the light-emitting body 10 and the connecting portion 51 can be adjusted. The adjustment screw receiver 54 is capable of receiving and fixing the adjustment screw 53. The prevention mechanism 50 is made of metal, resin, or the like.

[0030] In addition to the mechanism shown in Figure 8, the tilt prevention mechanism 50 may also include a connecting part 51 (not shown) that connects the ceiling and the light-emitting part 10 to prevent the light-emitting part 10 from tilting.

[0031] Figure 9 is a perspective view of a lighting device 100 equipped with a retaining plate 60. In Figure 9, the description of the light-emitting unit 10 is omitted in order to facilitate the disclosure of the hooking portion 61 and the gripping portion 63. Figure 10 is a side view of the lighting device 100 equipped with a retaining plate 60. As shown in Figures 9 and 10, the lighting device 100 according to this disclosure further comprises a retaining plate 60 for holding the lighting device 100, and it is preferable that the retaining plate 60 is equipped with hooking portions 61 for supporting a plurality of light-emitting units 10. This makes it easy to attach the lighting device 100 when installing it on a ceiling. The number of retaining portions 64 constituting the retaining plate 60 should be equal to the number of light-emitting units 10. For example, if there are four light-emitting units 10, there are four retaining portions 64.

[0032] Figures 11A and 11B are enlarged views of the area around the hook portion 61 in Figure 10. Figure 11A shows the state before the hook portion 61 supports the light-emitting portion 10, and Figure 11B shows the state after the hook portion 61 supports the light-emitting portion 10. As shown in Figures 11A and 11B, the light-emitting portion 10 is hooked by the hook portion 61. The hook portion 61 is a member for hooking the light-emitting portion 10, and is, for example, L-shaped. The hook portion 61 hooks onto the hooked portion 62 on the light-emitting portion 10 to support multiple light-emitting portions 10.

[0033] To prevent the multiple light-emitting parts 10 on the outer ring of the lighting device 100 from tilting downward, it is preferable that the hook portion 61 be located directly above the periphery of the outer ring of the lighting device 100. In other words, it is preferable that the hook portion 61 be located on the tip side of the retaining plate 60, opposite to the central portion 20. In this way, the hook portion 61 can be maintained with a small load while preventing the light-emitting parts 10 from tilting downward.

[0034] Furthermore, as shown in Figures 9 and 10, it is preferable that the retaining plate 60 is provided with a gripping portion 63 for gripping the retaining plate 60. The gripping portion 63 is for gripping the retaining plate 60 and is a handle or the like. In this way, the lighting device 100 can be attached to the ceiling even more easily. The hook portion 61 and the gripping portion 63 are attached to the retaining portion 64.

[0035] Figure 12 is a front view of a retaining plate 60 with holes 70. As shown in Figure 12, it is preferable that the retaining plate 60 has multiple holes 70. The holes 70 are for reducing the weight of the retaining plate 60. In this way, the lighting device 100 can be attached to the ceiling more easily. It can also reduce the load on the ceiling.

[0036] The retaining plate 60, the hooking part 61, and the gripping part 63 are made of metal, resin, or the like.

[0037] The lighting device 100 according to this disclosure may include a chassis that holds the light-emitting unit 10, and a cushion between the chassis and the ceiling.

[0038] Based on the above, the lighting device 100 according to this disclosure has multiple divided light-emitting units 10, and the size and weight of the light-emitting units 10, covers for the light-emitting units 10, chassis, etc. do not increase, and glare can be reduced without changing the brightness.

[0039] Although each embodiment and example of this disclosure has been described in detail above, it will be readily apparent to those skilled in the art that many modifications are possible without substantially departing from the novelty and effects of this disclosure. Therefore, all such modifications are included within the scope of this disclosure.

[0040] For example, any term that appears at least once in the specification or drawings alongside a broader or synonymous term may be replaced with that different term anywhere in the specification or drawings. Furthermore, the configuration and operation of the lighting device are not limited to those described in the embodiments and examples of this disclosure, and various modifications are possible. [Explanation of Symbols]

[0041] 10 Light-emitting section, 10a, 10b, 10c, 10d Divided light-emitting sections, 20 central part, 30. Cover for the central section, 40 support part, 50 Prevention mechanism, 51 Connection part, 52 Connected part, 52a Recess, 53 Adjustment screw, 54 Adjustment screw receiver, 60 Retaining plate, 61 Hooking part, 62 Hooked part, 63 Gripping part, 70 holes, 100 Lighting devices

Claims

1. Multiple divided light-emitting parts, A central part connected to each of the plurality of light-emitting parts and supporting the plurality of light-emitting parts, A holding plate that holds the plurality of light-emitting parts from above, Equipped with, The holding plate comprises a plurality of holding parts corresponding to each of the plurality of light-emitting parts, The holding portion includes a hook portion that supports the corresponding light-emitting portion, The lighting device is characterized in that the hook portion is located directly above the outer ring of the corresponding light-emitting portion.

2. The lighting device according to claim 1, further comprising a tilt prevention mechanism for preventing the plurality of light-emitting parts on the outer ring of the lighting device from tilting downward.

3. The lighting device according to claim 2, characterized in that the tilt prevention mechanism comprises a connecting portion that connects to each of the plurality of light-emitting units, a connected portion provided in the central portion that receives the connecting portion, an adjustment screw that penetrates the connecting portion in the vertical direction and adjusts the tilt of the plurality of light-emitting units, and an adjustment screw receiver that receives the adjustment screw.

4. The lighting device according to claim 1, characterized in that the retaining plate is provided with a gripping portion for gripping the retaining plate.

5. The lighting device according to claim 1, characterized in that the retaining plate has a plurality of holes.

6. The lighting device according to any one of claims 1 to 5, characterized in that the central part is provided with a cover for the central part.

Images