Illuminating device

Abstract

To provide an illuminating device that can improve the visibility of a label.SOLUTION: An illuminating device comprises: a light source part comprising at least one light source, and a frame housing the light source; and a label. The frame includes an illuminating opening that is an opening provided at a position through which the optical axis of the light source is passed, and a window part that is an opening provided at a position through which the optical axis of the light source is not passed. The label is provided at a position that does not face the illuminating opening, and provided at a position to which light of the light source passed through the window part can be applied.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[0002] Conventionally, lighting devices equipped with labels have been known. For example, in the lighting fixture disclosed in Patent Document 1, a cell pack having a storage battery cell and a package for covering the storage battery cell is housed in a cell case. The cell case is formed with a label opening through which the label attached to the package can be seen. In the fluorescent-type LED lighting fixture disclosed in Patent Document 2, a label serving as an advertising medium is provided on the outer surface of the tube body. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2023-147972 [Patent Document 2] Japanese Patent Application Laid-Open No. 2013-29719 Summary of the Invention [Problem to be solved by the invention]

[0004] For example, lighting fixtures that have been assigned individual IDs in advance for dimming or color adjustment control may have a label affixed to indicate this individual ID. At the location where the lighting fixture is installed, workers may visually check the label and set the individual ID in the lighting control device. However, depending on the location of the lighting fixture, it may be difficult for workers to see the label, and they may have to check the label by shining a light on it, which may be inconvenient for the workers.

[0005] An object of one aspect of the present disclosure is to provide an illumination device that can improve the visibility of a label. [Means for solving the problem]

[0006] An illumination device according to one aspect of the present disclosure comprises a light source unit having at least one light source and a frame for accommodating the light source, and a label, wherein the frame includes an illumination opening which is an opening provided at a position through which the optical axis of the light source passes, and a window portion which is an opening provided at a position through which the optical axis of the light source does not pass, and the label is provided at a position not facing the illumination opening and at a position where light from the light source that has passed through the window portion can be irradiated. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. [Figure 2] FIG. 2 is a bottom view of the lighting device with the panel removed. [Figure 3] 3 is a perspective view of the illumination device of the first embodiment taken along line III-III in FIG. 2, as viewed in the direction of the arrows. [Figure 4] FIG. 4 is a perspective view showing the lighting device of FIG. 3 with the cover open. [Figure 5] 3 is a perspective view of the illumination device of the second embodiment taken along line III-III in FIG. 2, as viewed in the direction of the arrows. [Figure 6] 3 is a perspective view of the illumination device of the third embodiment taken along the line III-III in FIG. 2, as viewed in the direction of the arrows. [Figure 7] 3 is a perspective view of the illumination device of the third embodiment taken along the line III-III in FIG. 2, as viewed in the direction of the arrows. [Figure 8] FIG. 10 is a perspective view of a vertical cross section perpendicular to the front-rear direction in the lighting device of the fourth embodiment. [Figure 9] 9 is a perspective view showing the lighting device of FIG. 8 with an attachment attached. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In the drawings, the same or equivalent elements are designated by the same reference numerals, and redundant description will be omitted.

[0009] First Embodiment A first embodiment will be described. FIG. 1 is a perspective view of a lighting device 100. FIG. 2 is a bottom view of the lighting device 100 with the panel 140 removed. FIG. 3 is a perspective view of the lighting device 100 of the first embodiment, taken along line III-III in FIG. 2, as viewed in the direction of the arrows. Line III-III is a virtual line extending left and right slightly forward of the center of the lighting device 100 in the front-rear direction in plan view. FIG. 4 is a perspective view of the lighting device 100 of FIG. 3 with the lid 310 open. Note that FIGS. 3 and 4 are perspective views of the section of line III-III of the storage section 110L, as viewed from the lower right front.

[0010] The lighting device 100 of the first embodiment is a lighting device for a grid ceiling. The lighting device 100 of this example has two panels 140, which will be described later, arranged side by side. In the following description, the left-right direction of the lighting device 100 is parallel to the direction in which the two panels 140 are arranged side by side. The front-rear direction of the lighting device 100 is parallel to the longitudinal direction of each panel 140. The upper side of the lighting device 100 is the side of the lighting device 100 that is attached to the ceiling. The lower side of the lighting device 100 is the side of the lighting device 100 that is away from the ceiling.

[0011] 1 and 2, the main body 101 of the lighting device 100 is a symmetrical rectangular frame made up of a plurality of frame plates. In this example, the plurality of frame plates making up the main body 101 include four vertical frames 111, two horizontal frames 112, two upper frames 113, two support portions 114, and two mounting portions 115.

[0012] The four vertical frames 111 are lined up left and right with a gap between them. Each vertical frame 111 has a width in the up-down direction and extends in the front-to-back direction. The two horizontal frames 112 are lined up front and back with a gap between them. Each horizontal frame 112 has a width in the up-down direction and extends in the left-to-right direction. Each vertical frame 111 is supported by two horizontal frames 112. The two vertical frames 111 at the left and right ends and the two horizontal frames 112 at the front and back ends form a substantially square outer shape in plan view. The remaining two vertical frames 111 are spaced apart symmetrically on either side of the center of the lighting device 100 in plan view.

[0013] The two upper frames 113 are arranged side by side at a distance from each other. Each upper frame 113 is a rectangular flat plate with its longitudinal axis extending in the front-to-rear direction and its transverse axis extending in the left-to-right direction. The area sandwiched between the two vertical frames 111 on the left side of the main body 101 is the storage section 110L. The left upper frame 113 spans the upper ends of these two vertical frames 111 and closes the upper side of the storage section 110L (see Figure 3). The area sandwiched between the two vertical frames 111 on the right side of the main body 101 is the storage section 110R. The right upper frame 113 spans the upper ends of these two vertical frames 111 and closes the upper side of the storage section 110R. Both storage sections 110L and 110R are open downward.

[0014] An opening 103 that passes through the lighting device 100 from top to bottom is formed between the accommodation sections 110L and 110R in the main body 101. The opening 103 is a rectangular opening with its long side in the front-to-rear direction and its short side in the left-to-right direction. Two support sections 114 and two mounting sections 115 are provided within the opening 103.

[0015] The two support portions 114 are arranged in a front-to-back arrangement with a gap between them, and extend in the left-right direction within the opening 103. The front support portion 114 is a flange-shaped member that protrudes in an L-shape from the upper end of the front horizontal frame 112 to the rear and extends in the left-right direction. The rear support portion 114 is a flange-shaped member that protrudes in an L-shape from the upper end of the rear horizontal frame 112 to the front and extends in the left-right direction. Each support portion 114 is formed with a plurality of bolt holes into which bolts for fixing the lighting device 100 to the ceiling are inserted. The rear support portion 114 is provided with a control portion 119 (see FIG. 2 ) that includes a controller, which is an electronic component that drives and controls the light emission of the lighting device 100.

[0016] The two mounting portions 115 are arranged side by side at a distance from each other and extend in the front-to-rear direction within the opening 103. The left mounting portion 115 is a flange-shaped portion that protrudes in an L-shape to the right from the lower end of the vertical frame 111 that forms the right wall of the storage portion 110L and extends in the front-to-rear direction. The right mounting portion 115 is a flange-shaped portion that protrudes in an L-shape to the left from the lower end of the vertical frame 111 that forms the left wall of the storage portion 110R and extends in the front-to-rear direction. Each mounting portion 115 is used to secure various attachments or external devices such as speakers or air conditioning equipment to the lighting device 100.

[0017] The lighting device 100 has a light source unit and a label 200. The light source unit has at least one light source 130A and a frame 120 that houses the light source 130A. The lighting device 100 of this example has two light source units: a light source unit 102L housed in a housing unit 110L, and a light source unit 102R housed in a housing unit 110R. Since the light source unit 102L and the light source unit 102R are bilaterally symmetrical, only the light source unit 102L will be described below.

[0018] The light source unit 102L has a box-shaped frame 120 that is long in the front-to-rear direction. The frame 120 includes a pair of vertical plates 121, a pair of horizontal plates 122, and an upper plate 123. The pair of vertical plates 121 extend approximately parallel to the above-mentioned vertical frames 111 and form the left and right walls of the light source unit 102L. The pair of horizontal plates 122 extend approximately parallel to the above-mentioned horizontal frames 112 and form the front and rear walls of the light source unit 102L. The upper plate 123 extends approximately parallel to the above-mentioned upper frame 113 and forms the upper wall of the light source unit 102L.

[0019] The light source unit 102L is slightly smaller than the storage unit 110L and is positioned offset to the lower right within the storage unit 110L. Of the pair of vertical plates 121, the right vertical plate 121 is fixed to the left surface of the vertical frame 111 that forms the right wall of the storage unit 110L, and the left vertical plate 121 is spaced apart to the right from the vertical frame 111 that forms the left wall of the storage unit 110L. The pair of horizontal plates 122 are fixed to the two horizontal frames 112 that form the front and rear walls of the storage unit 110L, respectively, within the storage unit 110L. The upper plate 123 is spaced apart downward from the upper frame 113 that forms the top wall of the storage unit 110L.

[0020] With the above structure, as shown in Fig. 3, a groove-like gap 104 extending vertically and front-to-rear is formed on the left side of the light source unit 102L inside the storage unit 110L. The gap 104 is a rectangular opening extending in the front-to-rear direction when viewed from the bottom (see Figs. 1 and 2). A space 105 extending front-to-rear and left-to-right is formed above the light source unit 102L inside the storage unit 110L. The left edge of this space 105 communicates with the upper edge of the gap 104.

[0021] An area of ​​the underside of the upper frame 113 of the storage section 110L that is located above the gap 104 is referred to as the visible area. The visible area is an area that can be seen by a user from below the lighting device 100 through the gap 104. A label 200 is placed within the visible area of ​​the upper frame 113. In this example, the left edge of the underside of the upper frame 113 is the visible area, and the label 200 is placed in the center of this visible area in the front-to-rear direction.

[0022] Label 200 bears an individual ID for dimming or color adjustment control that has been assigned in advance to lighting device 100. For example, a user visually checks the individual ID written on label 200 and sets dimming or color adjustment control corresponding to this individual ID in control unit 119. The information written on label 200 is not limited to the above-described aspects, and may be, for example, information related to an application other than dimming or color adjustment control, information different from the individual ID, or a two-dimensional or three-dimensional code that can be read and recognized by an electronic device.

[0023] In this example, a label 200 corresponding to the light source unit 102L is provided in the housing unit 110L, and a label 200 corresponding to the light source unit 102R is provided in the housing unit 110R so that the light source units 102L and 102R can be controlled to adjust the brightness or color separately (see FIG. 2). Alternatively, if the light source units 102L and 102R are controlled to adjust the brightness or color in common, a single label 200 may be provided on the lighting device 100.

[0024] A light emitting substrate 130 is installed on substantially the entire lower surface of the upper plate 123 of the light source unit 102L. A plurality of light sources 130A are arranged on the light emitting substrate 130 in a planar manner so as to be aligned front to back and left to right. In this example, each light source 130A is an LED, but may be another light emitting element.

[0025] The frame 120 includes an illumination opening 124, which is an opening provided at a position through which the optical axis of the light source 130A passes, and a window portion 300, which is an opening provided at a position through which the optical axis of the light source 130A does not pass. In this example, the optical axis of each light source 130A is a structural axis that irradiates light perpendicularly from the installation surface of the light-emitting substrate 130, and extends downward from each light source 130A. Alternatively, the optical axis of each light source 130A may be an optical axis determined by the central direction in the spread of the light distribution characteristic, or may be a maximum luminous intensity axis determined by the direction in which the luminous intensity is maximum.

[0026] Substantially the entire lower surface of the frame 120 is opened by a rectangular illumination opening 124 whose longitudinal direction is the front-to-rear direction in a bottom view. The illumination opening 124 faces the multiple light sources 130A from below. Therefore, the optical axis of each light source 130A extends downward through the illumination opening 124. In this example, a light-transmitting panel 140 is fitted into the illumination opening 124. For example, the panel 140 is an opaque milky white panel that diffuses light uniformly. Most of the light emitted by each light source 130A passes through the panel 140 and is irradiated to the lower side of the lighting device 100 (see arrow L0 in FIG. 3 ). Note that the illumination opening 124 does not necessarily need to be provided with a panel 140.

[0027] The light emitting substrate 130 is not provided on the left edge of the underside of the upper plate 123 of the light source unit 102L, which is close to the gap 104. A window 300 that penetrates the upper plate 123 from top to bottom is provided on the left edge of the upper plate 123. In this example, the window 300 is provided in the center of the front-to-rear direction of the lighting device 100 so as to be aligned left and right with the label 200 in a bottom view. The window 300 has a rectangular shape that is long in the front-to-rear direction in a bottom view, and extends further forward and backward than the label 200. Furthermore, the opening width of the window 300 in the left-to-right direction is greater than the left-to-right width of the label 200.

[0028] In this way, because the window unit 300 is located on the left side of the multiple light sources 130A, the optical axis extending downward from each light source 130A does not pass through the window unit 300. However, part of the light emitted from each light source 130A is diffused or irregularly reflected within the light source unit 102L and directed toward the window unit 300.

[0029] In this example, the lighting device 100 has a lid 310 that can open and close the window portion 300. As shown in Figures 2 to 4, the lid 310 is a rectangular plate-like member that corresponds to the window portion 300, and is supported so as to be rotatable around a shaft provided on the edge of the window portion 300. The lid 310 is displaceable between a closed position (see Figures 2 and 3) that closes the window portion 300, and an open position (see Figure 4) that opens the window portion 300.

[0030] In a natural state where no external force is applied to the lid 310, the lid 310 is supported in the closed position. In this state, as described above, the light directed toward the window portion 300 is blocked by the lid 310 so as not to be emitted from the window portion 300. For example, when the lid 310 in the closed position is pushed from below, the lid 310 rotates upward within the space 105 and is displaced to the open position. In this state, the light directed toward the window portion 300 is not blocked by the lid 310 and is emitted from the window portion 300.

[0031] The label 200 is provided at a position that does not face the illumination opening 124 and is provided at a position that allows it to be irradiated with light from the light source 130A that has passed through the window portion 300. In this example, the label 200 is disposed above the upper plate 123, and the illumination opening 124 is disposed below the upper plate 123. Therefore, the label 200 does not face the illumination opening 124, and the light emitted from the illumination opening 124 is not irradiated onto the label 200.

[0032] Therefore, when the lighting device 100 is in a normal use state (see FIGS. 1 to 3), substantially all of the light emitted from the multiple light sources 130A passes through the panel 140 in the lighting opening 124 and brightly illuminates the room. At this time, because the lid 310 is in the closed position, the light from the light source 130A is not irradiated onto the label 200. Therefore, even if a user looks into the gap 104 from below, it is difficult for the user to see the label 200.

[0033] As shown in FIG. 4, for example, when installing or maintaining the lighting device 100, the user removes the panel 140 of the light source unit 102L. Next, the user pushes up the lid 310 from below inside the light source unit 102L, thereby displacing the lid 310 from the closed position to the open position. As a result, as indicated by arrow L1 in FIG. 4, a portion of the light emitted from each light source 130A passes through the window 300 and is emitted to the upper side of the light source unit 102L. Furthermore, this light travels through the space 105 and is irradiated onto the lower surface of the upper frame 113 of the housing unit 110L.

[0034] The area on the underside of the upper frame 113 of the storage unit 110L that is irradiated with light that has passed through the window 300 is referred to as the irradiatable area. The label 200 is placed within the irradiatable area of ​​the upper frame 113. In this example, within the aforementioned visible area of ​​the upper frame 113, the irradiatable area is the central portion in the front-to-rear direction adjacent to the window 300 when viewed from the bottom. Light that passes through the window 300 and heads toward the irradiatable area illuminates the label 200.

[0035] In this way, label 200 is provided on the underside of upper frame 113 at a position that is visible through gap 104 and is irradiated with light that has passed through window 300. Therefore, when a user looks into gap 104 from below, the information written on illuminated label 200 can be reliably seen, and dimming or color adjustment control can be correctly set based on that information.

[0036] In this example, the label 200 is located to the left of the window 300, while the rotation axis of the lid 310 is provided on the right edge of the window 300. Therefore, when the lid 310 is pushed up from below, it is displaced to the upper right side so as to move away from the label 200. Therefore, when displaced to the open position, the lid 310 does not block the light from the window 300 toward the label 200, and therefore illuminates the label 200 more reliably.

[0037] In a bottom view, the window 300 is on a straight line connecting at least one light source 130A and the label 200. Therefore, a portion of the light emitted from each light source 130A can be encouraged to pass through the window 300 and travel straight toward the label 200, more reliably illuminating the label 200.

[0038] In the above embodiment, the lighting device 100 does not necessarily have to be provided with the cover 310. In this case, a portion of the light emitted from each light source 130A always passes through the window portion 300 and illuminates the label 200.

[0039] Second Embodiment A second embodiment will be described. In the following embodiments, the same components as those in the first embodiment will be denoted by the same reference numerals, and a description thereof will be omitted, and only components different from those in the first embodiment will be described. Fig. 5 is a perspective view of the illumination device 100 of the second embodiment, taken along line III-III in Fig. 2, as viewed in the direction of the arrows.

[0040] The position and shape of the window 300 provided in the lighting device 100 are not limited to those disclosed in the first embodiment. For example, as in the lighting device 100 according to the second embodiment, the window 300 may be provided in a position of the frame 120 different from the upper plate 123. In this example, as shown in FIG. 5 , the window 300 is provided in the left vertical plate 121 of the pair of vertical plates 121 that is closer to the label 200. The window 300 is provided in the center of the lighting device 100 in the front-to-rear direction so as to be aligned with the label 200 in a bottom view. The window 300 has a rectangular shape that is long in the front-to-rear direction in a side view, and extends further forward and backward than the label 200.

[0041] The lighting device 100 according to the second embodiment has a reflective member 320 provided at a position outside the light source unit 102L where light from the light source 130A that has passed through the window unit 300 is irradiated. In this example, the reflective member 320, which is a light-reflecting sheet, is provided on the right surface of the vertical frame 111 that forms the left wall of the storage unit 110L. The reflective member 320 is provided in the center of the lighting device 100 in the front-to-rear direction so as to be aligned with the label 200 and the window unit 300 on the left and right sides in a bottom view. At least a portion of the reflective member 320 is located between the label 200 and the window unit 300 in the up-down direction. The reflective member 320 is located diagonally upward when viewed from the window unit 300.

[0042] The reflecting member 320 reflects the light from the light source 130A that has passed through the window 300 toward the label 200. In this example, as indicated by arrow L2 in FIG. 5 , part of the light emitted from each light source 130A is diffused or irregularly reflected within the light source unit 102L and directed toward the window 300. Furthermore, part of the light that has passed through the window 300 travels through the gap 104 and is irradiated onto the reflecting member 320. At this time, part of the light irradiated onto the reflecting member 320 is reflected diagonally upward toward the label 200, illuminating the label 200.

[0043] In the second embodiment described above, as in the first embodiment, a cover 310 (see FIG. 4) that opens and closes the window portion 300 may be provided. The reflecting member 320 is not limited to a light reflecting sheet attached to the vertical frame 111. For example, part or all of the surface of the vertical frame 111 that is irradiated with light that passes through the window portion 300 may function as the reflecting member 320 made of a light reflecting material.

[0044] Third Embodiment A third embodiment will now be described. Figures 6 and 7 are perspective views of the lighting device 100 of the third embodiment, taken along line III-III in Figure 2, as viewed in the direction of the arrows. Specifically, Figure 6 is a perspective view of the housing section 110L taken along line III-III as viewed from the upper right front. Figure 7 is a perspective view of the housing section 110L taken along line III-III as viewed from the lower right front, with the lid 310 open.

[0045] The lighting device 100 according to the third embodiment has a driver 330 that displaces the lid 310 to open or close the window 300 in response to a remote command. In this example, as shown in Fig. 6, the driver 330 that can rotate the lid 310 around its axis is provided on the upper surface of the upper plate 123 of the frame 120. The driver 330 is an electric actuator that receives a signal from the outside via a wired or wireless connection and displaces the lid 310 to an open or closed position based on the signal.

[0046] As shown in Fig. 7, for example, when installing or maintaining the lighting device 100, a user operates a remote controller to send a signal to the driver 330 to move the cover 310 to the open position. The driver 330 receives this signal and moves the cover 310 from the closed position to the open position. As a result, similar to the first embodiment, light from the light source 130A passes through the window 300 and illuminates the label 200 (see arrow L1 in Fig. 7). Therefore, the user can reliably view the information written on the label 200 at the desired timing without having to remove the panel 140 or push up the cover 310.

[0047] <Fourth embodiment> A fourth embodiment will now be described. Fig. 8 is a perspective view of a vertical cross section perpendicular to the front-to-rear direction of a lighting device 100 of the fourth embodiment. Fig. 9 is a perspective view showing a state in which an attachment 400 is attached to the lighting device 100 of Fig. 8. Specifically, Figs. 8 and 9 are perspective views of a vertical cross section taken slightly forward of the center in the front-to-rear direction of the lighting device 100, as viewed from the upper left front side.

[0048] The lighting device 100 according to the fourth embodiment differs from the configuration of the first embodiment in that the label 200 and the window 300 are positioned differently, and no lid 310 is provided. In this example, as shown in Fig. 8, the window 300 is provided so as to penetrate in the left-right direction through the vertical frame 111 that forms the right wall of the storage section 110L and the vertical plate 121 that forms the right wall of the light source section 102L. The window 300 is provided in the center of the lighting device 100 in the front-to-rear direction, and has a rectangular shape that is long in the front-to-rear direction in a side view.

[0049] The label 200 is provided on the left surface of the vertical frame 111 that forms the left wall of the storage section 110R. The information written on the label 200 is visible from inside the opening 103. The label 200 is provided in the center of the lighting device 100 in the front-to-rear direction so as to be aligned with the window section 300 on both sides of the opening 103. The label 200 has a rectangular shape that is long in the front-to-rear direction in a side view and is slightly smaller than the window section 300. In this example, the entire label 200 overlaps with the window section 300 in a side view.

[0050] The lighting device 100 has an attachment 400 that is detachable from mounting portions 115 provided near the light source units. In this example, one attachment 400 is detachable from two mounting portions 115 that are located near the two light source units 102L and 102R. As shown in Fig. 9, the attachment 400 has a flat plate shape that extends in the front-rear and left-right directions, and has a rectangular shape that corresponds to the opening 103 in a plan view.

[0051] As shown in Fig. 8, when installing the lighting device 100 on a ceiling, for example, the user does not attach the attachment 400 to the lighting device 100. In this state, as indicated by arrow L3 in Fig. 8, part of the light emitted from each light source 130A is diffused or diffusely reflected within the light source unit 102L and directed toward the window unit 300. Furthermore, part of the light that passes through the window unit 300 travels through the opening 103 and is irradiated onto the label 200. This illuminates the label 200, allowing the user to reliably visually check the information written on the label 200 and set the dimming or color adjustment control.

[0052] 9, for example, if the opening 103 is not used after the lighting device 100 is installed, the user fixes the left and right ends of the attachment 400 so that they are supported by the upper sides of the two mounting portions 115. In this way, the attachment 400 closes the opening 103 so that the opening 103 is not exposed below. The label 200 exposed inside the opening 103 is hidden above the attachment 400 and cannot be seen from below.

[0053] The attachment 400 includes a covering portion 410 that covers the window portion 300 when attached to the mounting portion 115. In this example, the covering portion 410 is a flange-like member that protrudes upward in an L-shape from the left end of the attachment 400 and extends in the front-to-rear direction. When the attachment 400 is supported on the upper sides of the two mounting portions 115, the covering portion 410 is disposed along the vertical frame 111 that forms the right wall of the storage portion 110L, and the covering portion 410 covers the window portion 300 from the right side. In this case, as described above, the covering portion 410 blocks light directed toward the window portion 300 so that it does not exit from the window portion 300. This prevents the label 200 hidden above the attachment 400 from being unnecessarily illuminated by the light from each light source 130A.

[0054] The attachment 400 is not limited to a member that closes the opening 103, but may be a member used for other purposes. The attachment 400 is not limited to being attached to the two attachment portions 115, but may be attached to any one of the attachment portions 115.

[0055] <Additional Notes> The present disclosure is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment.

[0056] For example, the lid 310 includes an inner surface 310A that faces the inside of the frame 120 when the window unit 300 is closed. At least the inner surface 310A of the lid 310 may reflect light from the light sources 130A. In the example shown in FIG. 3 , the bottom surface of the lid 310 in the closed position is the inner surface 310A that faces the inside of the frame 120. A light-reflecting sheet is provided on the inner surface 310A. Light heading toward the window unit 300 within the frame 120 is blocked by the lid 310 to prevent it from escaping from the window unit 300, and is reflected by the inner surface 310A and heads toward the illumination opening 124. As a result, when the lid 310 is in the closed position, the light emitted from each light source 130A can illuminate the underside of the lighting device 100 more brightly.

[0057] A light reflecting sheet may be provided on the inner surface of the frame 120, excluding the location where the light emitting substrate 130 is installed, to efficiently irradiate light to the lower side of the lighting device 100. In this case, the light reflecting sheet provided on the inner surface 310A of the lid 310 may be made of the same material and have the same performance as the light reflecting sheet provided on the inner surface of the frame 120. This makes it possible to prevent unevenness in the light emitted downward from the light source unit 102L. Note that the embodiment is not limited to providing a light reflecting sheet on the inner surface 310A of the lid 310; for example, the entire lid 310 may be made of a light reflecting material, so that the inner surface 310A reflects the light of the light source 130A.

[0058] The lighting device 100 may have a light-emitting section provided on or near the label 200 and made of a fluorescent material or a phosphorescent material. For example, if the entire label 200 or the information written thereon is made of a fluorescent material, the label 200 will glow due to fluorescence in addition to being illuminated by light from the window 300, improving the visibility of the label 200. If the entire label 200 or the information written thereon is made of a phosphorescent material, the label 200 will accumulate light energy from the window 300 when the lid 310 is in the open position, and will emit light energy and glow when the lid 310 is in the closed position, improving the visibility of the label 200.

[0059] When a light-emitting unit made of a fluorescent material or a phosphorescent material is provided near the label 200, the light emitted by the light-emitting unit illuminates the label 200, improving the visibility of the label 200. For example, the light-emitting unit provided near the label 200 may be in the shape of a ring surrounding the label 200. Multiple light-emitting units may be provided around the label 200. [Explanation of symbols]

[0060] 100 lighting device, 102L, 102R light source unit, 200 label, 124 lighting opening, 300 window unit, 310 lid, 320 reflective member, 330 driving unit, 400 attachment, 410 covering unit

Claims

1. a light source unit having at least one light source and a frame that accommodates the light source; a label; the frame includes an illumination opening that is an opening provided at a position through which an optical axis of the light source passes, and a window portion that is an opening provided at a position through which the optical axis of the light source does not pass, the label is provided at a position not facing the illumination opening and at a position where the label can be irradiated with the light from the light source that has passed through the window portion; Lighting equipment.

2. Further provided with a lid that can open and close the window portion, The lighting device according to claim 1 .

3. Further provided is a drive unit that displaces the lid to open or close the window in response to a remote instruction.

3. The lighting device according to claim 2.

4. the lid includes an inner surface that faces the inside of the frame when the window portion is closed; At least the inner surface of the lid reflects light from the light source.

3. The lighting device according to claim 2.

5. a reflecting member provided outside the light source unit at a position where the light from the light source that has passed through the window unit is irradiated, The reflecting member reflects the light from the light source that has passed through the window portion toward the label. The lighting device according to claim 1 .

6. The label further includes a light-emitting portion formed of a fluorescent material or a phosphorescent material and provided on or near the label. The lighting device according to claim 1 .

7. Further provided is an attachment that is detachable from a mounting portion provided near the light source portion, The attachment includes a covering portion that covers the window portion when attached to the mounting portion. The lighting device according to claim 1 .

Images