Indication device

Abstract

To provide a display device which can be attached to a ceiling surface without a metal fitting.SOLUTION: A display device B1 is attached to a ceiling surface 300. The display device B1 includes a light source unit A1, a display panel 20 which is illuminated by the light source unit A1, and a box-shaped body 1 which holds the display panel 20 and the light source unit A1. The body 1 has an upper wall 100 at least a part of which is brought into contact with the ceiling surface 300. The upper wall 100 includes a first attachment 116 and a second attachment 117. The first attachment 116 is attached to a metal fitting 101 fixed to the ceiling surface 300. The second attachment 117 can be attached to the ceiling surface 300 without the usage of the metal fitting 101.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a display device, and more particularly to a display device that is attached to a ceiling surface. [Background technology]

[0002] An example of this type of display device is described in Patent Document 1. The device described in Patent Document 1 is attached to a mounting surface on the ceiling via a mounting bracket. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-225531 Summary of the Invention [Problem to be solved by the invention]

[0004] However, depending on the environment in which the display device is installed, mounting brackets may not be necessary. Even in such cases, the device described in Patent Document 1 requires work such as fixing the mounting brackets to the mounting surface, which reduces work efficiency. Therefore, there is a demand for a display device that can be attached to a ceiling surface without brackets.

[0005] An object of the present disclosure is to provide a display device that can be attached to a ceiling surface without using metal fittings. [Means for solving the problem]

[0006] A display device according to one aspect of the present disclosure is attached to a ceiling surface. The display device includes a light source unit, a display panel illuminated by the light source unit, and a box-shaped main body that holds the display panel and the light source unit. The main body has an upper wall at least a portion of which contacts the ceiling surface. The upper wall includes: A pair of first mounting holes a first mounting portion; a pair of second mounting holes different from the pair of first mounting holes;and a second mounting portion. The first mounting portion is attached to a metal fitting fixed to the ceiling surface. The second mounting portion can be attached to the ceiling surface without using the metal fitting. [Effects of the Invention]

[0007] The display device of the present disclosure has the advantage that it can be attached to a ceiling surface without using metal fittings. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is an external view of a display device according to an embodiment of the present disclosure. [Figure 2] FIG. 2 is an exploded perspective view of the display device. [Figure 3] FIG. 3 is a top view of the display device. [Figure 4] FIG. 4 is an exploded perspective view showing a mounting plate of the display device. [Figure 5] FIG. 5 is an exploded perspective view illustrating a method for attaching the display device to a ceiling surface. DETAILED DESCRIPTION OF THE INVENTION

[0009] The drawings described in the following embodiments are schematic diagrams, and the ratios of the sizes and thicknesses of the components do not necessarily reflect the actual dimensional ratios. Note that the configurations described in the following embodiments are merely examples of the present disclosure. The present disclosure is not limited to the following embodiments, and various modifications are possible depending on the design, etc., as long as the effects of the present disclosure can be achieved.

[0010] (1) Overview A display device B1 according to an embodiment of the present disclosure is attached to a ceiling surface 300 as shown in FIG.

[0011] The display device B1 described below is an emergency exit light installed at an emergency exit or a path to an emergency exit in a building such as an office or a store. However, the display device according to the embodiment is not limited to an emergency exit light, and may be used, for example, to indicate a specific location (such as a restroom) within a building. In the following description, unless otherwise specified, the up / down, front / back, and left / right directions indicated by arrows in FIG. 1 are defined as the up / down, front / back, and left / right directions of the display device B1.

[0012] (1-1)Display device As shown in FIG. 1, the display device B1 includes a light source unit A1, a display panel 20 illuminated by the light source unit A1, and a main body 1 that holds the display panel 20 and the light source unit A1.

[0013] (1-1-1) Main unit The main body 1 is made of a synthetic resin material and has a rectangular box shape with an opening on the front side. The display panel 20 and the light source unit A1 are attached to the opening on the front side of the main body 1.

[0014] As shown in FIG. 2, the main body 1 houses a power supply device 11 for lighting the light source unit A1, a battery unit 13 having a secondary battery, a terminal block 12, a mounting plate 10, and the like.

[0015] The power supply device 11 lights up the light source unit A1 with normal power supplied from a normal power source (for example, a commercial power system) and charges the battery unit 13. Furthermore, the power supply device 11 lights up the light source unit A1 with emergency power supplied from the battery unit 13 in the event of a power outage in the power system.

[0016] The mounting plate 10 is formed into a plate shape from a metal material (see FIG. 2). The mounting plate 10 is screwed to the inner bottom surface of the main body 1. The power supply unit 11 and terminal block 12 are screwed to the mounting plate 10 and housed within the main body 1. The battery unit 13 is detachably attached to the mounting plate 10.

[0017] (1-1-2) Light source unit and display panel The light source unit A1 has a housing 4, and a light emitting section, a light guide, and the like (not shown) are housed in the housing 4. The display panel 20 includes a light guide plate 21, and the light guide plate 21 is held by a holder 22.

[0018] In light source unit A1, light emitted by the light-emitting portion and guided by the light guide enters light guide plate 21 from incident surface 210 of light guide plate 21. The light that has entered light guide plate 21 travels inside light guide plate 21 and is totally reflected by the rear surface of holder 22, and is emitted forward to illuminate display panel 20.

[0019] In the embodiment, the light source unit A1 and the display panel 20 are provided on one side of the main body 1, but they may be provided on both sides of the main body 1.

[0020] (1-1-3) Upper wall of the main body The main body 1 has an upper wall 100 at least a portion of which is in contact with a ceiling surface 300 .

[0021] 3, the upper wall 100 has a first mounting portion 116 and a second mounting portion 117. The upper wall 100 further has a power supply hole 115 through which a power supply line 303 is drawn.

[0022] (1-1-3a) First mounting part The first mounting portion 116 is attached to a metal fitting 101 that is fixed to the ceiling surface 300 .

[0023] Details will be described later, but for example, as shown in Figure 5, a metal fitting 101 having a pair of nut-equipped bolts 106a, 106b implanted therein and a pair of metal fitting mounting holes (107a1, 107a2), 107b formed therein is attached to a ceiling surface 300 with a pair of screws 110a, 110b.

[0024] 3 to 5, the first mounting portion 116 includes a pair of first mounting holes (a pair of first wall mounting holes 116a, 116b formed in the upper wall 100 of the main body 1, and a pair of first plate mounting holes 16a, 16b formed in the facing portion 10A of the mounting plate 10) that engage with the pair of nut-equipped bolts 106a, 106b. The first mounting portion 116 is attached to the ceiling surface 300 by engaging the pair of first mounting holes (116a, 116b and 16a, 16b) with the pair of nut-equipped bolts 106a, 106b.

[0025] (1-1-3b)Second mounting part The second mounting portion 117 can be mounted to the ceiling surface 300 without using the metal fitting 101 .

[0026] The second mounting portion 117 includes, for example, a pair of second mounting holes (a pair of second wall mounting holes (117a1, 117a2), 117b formed in the upper wall 100 of the main body 1, and a pair of second plate mounting holes (17a1, 17a2), 17b formed in the facing portion 10A of the mounting plate 10) as shown in Figures 3 to 5, and is attached to the ceiling surface 300 with a pair of screws 110a, 110b without using a metal fitting 101.

[0027] However, the second mounting portion 117 ,gold With the fixture 101 interposed, it is also possible to perform attachment using a pair of screws 110a and 110b without using the metal fitting 101 for attachment.

[0028] In this way, the display device B1 can be attached using the first attachment portion 116 via the metal fitting 101, and can also be attached using the second attachment portion 117 without using the metal fitting 101. The display device B1 can also be attached using the second attachment portion 117 via the metal fitting 101. Therefore, the display device B1 can be attached to the ceiling surface 300 without using the metal fitting 101.

[0029] Therefore, in an environment where the metal fittings 101 are not required, the display device B1 can be installed without the work of fixing the metal fittings 101 to the ceiling surface 300, thereby improving work efficiency.

[0030] (2)Details (2-1) Ceiling surface A metal box (not shown) is provided on the back side of the ceiling surface 300, and as shown in Figure 5, this box has a pair of screw holes (301a, 301b), (302a, 302b) formed at positions corresponding to the pair of second plate mounting holes (17a1, 17a2), 17b.

[0031] In this embodiment, as shown in FIG. 5 , screw holes 301a and 301b are formed at positions corresponding to the second plate mounting holes 17a1 and 17a2 (and second wall mounting holes 117a1 and 117a2; not shown), and screw holes 302a and 302b are formed at positions corresponding to the second plate mounting hole 17b (and second wall mounting hole 117b; not shown). The distance between the pair of outer screw holes 301a and 302b is d1, and the distance between the pair of inner screw holes 301b and 302a is d2. Note that d1 is, for example, 83.5 mm, and d2 is, for example, 66.7 mm, but is not limited to these. A pair of screws 110a and 110b is screwed into the pair of outer screw holes 301a and 302b or the pair of inner screw holes 301b and 302a.

[0032] Furthermore, a power line 303 is drawn out from a box (not shown) provided on the back side of the ceiling surface 300 .

[0033] (2-2) Details of the first and second mounting parts: Two pairs of mounting holes corresponding to different movements The first mounting portion 116 includes a pair of first wall mounting holes 116a, 116b. The pair of first mounting holes 116a, 116b correspond to a first movement of the upper wall 100 relative to the ceiling surface 300.

[0034] The first movement is, for example, a rotational movement. In this embodiment, the first movement is a movement in which the upper wall 100 (main body 1) rotates around an axis 310 perpendicular to the ceiling surface 300.

[0035] The second mounting portion 117 includes a pair of second wall mounting holes (117a1, 117a2), 117b. The pair of second wall mounting holes (117a1, 117a2), 117b correspond to a second movement of the upper wall 100 relative to the ceiling surface 300, which is different from the first movement.

[0036] The second movement is, for example, a translation. In this embodiment, the second movement is a translation of the upper wall 100 (main body 1) in one direction parallel to the ceiling surface 300.

[0037] The one direction parallel to the ceiling surface 300 is, for example, a first direction (left-right direction in FIG. 1) that is the direction of a straight line connecting the pair of first wall mounting holes 116a, 116b formed in the upper wall 100. In this embodiment, the first direction is the direction of a straight line connecting the small holes of the pair of first wall mounting holes 116a, 116b.

[0038] The combination of the first movement and the second movement is not limited to the above. For example, the first movement may be a translational movement, and the second movement may be a rotational movement. Alternatively, the first movement may be a rotational movement, and the second movement may be a combination of a translational movement and a rotational movement (for example, a translational movement followed by a rotational movement). The upper wall 100 is formed with a pair of first wall mounting holes corresponding to the first movement, and a pair of second wall mounting holes corresponding to the second movement.

[0039] In this way, the two types of pairs of mounting holes correspond to mounting to the ceiling surface 300 via the metal fitting 101 and mounting to the ceiling surface 300 without the metal fitting 101. Specifically, the pair of first wall mounting holes 116a, 116b correspond to rotational movement, and the pair of second wall mounting holes (117a1, 117a2), 117b correspond to translational movement. When mounting the display device B1 to the metal fitting 101 fixed to the ceiling surface 300, the display device B1 can be positioned relative to the ceiling surface 300 by rotational movement, and when mounting the display device B1 to the ceiling surface 300 without the metal fitting 101, the display device B1 can be positioned relative to the ceiling surface 300 by translational movement.

[0040] (2-2-1) A pair of first wall mounting holes The pair of first wall mounting holes 116a, 116b are formed in a point-symmetric shape, which means that when one is rotated 180 degrees around a certain point, it overlaps with the other.

[0041] The pair of first wall mounting holes 116a, 116b have shapes that are point-symmetrical with respect to an intersection 311 between an axis 310 and the upper wall 100, as shown in FIG.

[0042] Specifically, each of the pair of first wall mounting holes 116a, 116b is a potbelly-shaped hole (hereinafter referred to as a "potbelly hole") consisting of a large hole and a small hole communicating with the large hole. In a potbelly hole, the small hole is designed so that only the bolts can pass through, but not the nuts of the nut-equipped bolts 106a, 106b installed in the metal fitting 101. On the other hand, the large hole is designed so that the nuts can also pass through.

[0043] The pair of first wall mounting holes 116a, 116b are congruent but oppositely oriented (the small hole is positioned opposite to the large hole). That is, in first mounting hole 116a, the small hole is located above the large hole, and in first mounting hole 116b, the small hole is located below the large hole.

[0044] In this way, mounting via the metal fitting 101 can be performed by the pair of first wall mounting holes 116a, 116b having point-symmetric shapes that correspond to the rotational movement.

[0045] (2-2-2) A pair of second wall mounting holes At least one of the pair of second wall mounting holes (117a1, 117a2), 117b includes an elongated hole 103 (first elongated hole) extending in the one direction (first direction). Such elongated hole 103 corresponds to the above-mentioned translation.

[0046] The elongated hole 103 corresponds to a pair of screw holes 302a and 302b formed in the ceiling surface 300, for example, as shown in FIG.

[0047] The elongated hole 103 has a length that exceeds the distance between the pair of screw holes 302a, 302b. The elongated hole 103 also has a width that allows only the threaded portion of a screw to pass through, but not the head of the screw.

[0048] (2-2-2a) One of the pair of second wall mounting holes In this embodiment, one of the pair of second wall mounting holes (117a1, 117a2), 117b includes the elongated hole 103. Specifically, the second mounting hole 117b includes the elongated hole 103, as shown in FIG.

[0049] In this way, the pair of second wall mounting holes (117a1, 117a2), 117b including the long hole 103 in the first direction corresponding to the parallel movement allows mounting without using the metal fitting 101.

[0050] In addition to the elongated hole 103, the second mounting hole 117b further includes an insertion hole 102 that expands into a round or rectangular shape from one end of the elongated hole 103. In other words, the insertion hole 102 communicates with the elongated hole 103 and has a diameter (e.g., a diameter or a maximum diameter) that is larger than the width of the elongated hole 103. The insertion hole 102 can also pass the heads of the screws 110a and 110b through it.

[0051] In the display device B1, the main body 1 can be temporarily fixed using the insertion hole 102, so that installation can be easily performed without using the metal fittings 101.

[0052] (2-2-2b) The other of the pair of second wall mounting holes The second mounting holes 17a1 and 17a2, which are the other of the pair of second wall mounting holes (117a1 and 117a2), 117b, are elongated holes (second elongated holes) extending in a second direction (front-to-back direction in FIG. 1) perpendicular to the first direction. Note that the second elongated holes (17a1 and 17a2) are shorter than the first elongated hole 103, as shown in FIG. 3.

[0053] The second mounting holes 17a1 and 17a2 correspond to a pair of screw holes 301a and 301b formed in the ceiling surface 300, as shown in FIG.

[0054] The second mounting holes 17a1 and 17a2, which are elongated holes (second elongated holes), also allow translation in a direction (second direction) perpendicular to one direction (first direction), making it possible to easily align the device with the ceiling surface 300.

[0055] (2-2-3) Positional relationship of two pairs of wall-mounting holes The pair of second wall mounting holes (117a1, 117a2), 117b are formed at positions sandwiched between the pair of first wall mounting holes 116a, 116b. In this embodiment, the pair of second mounting holes (117a1, 117a2), 117b are formed at positions along a straight line connecting the small holes of the pair of first wall mounting holes 16a, 16b.

[0056] This makes it possible to avoid an increase in size compared to when the mounting holes are formed at positions sandwiching the pair of first wall mounting holes 116a, 116b.

[0057] (2-2-4) Mounting plate In this embodiment, the main body 1 is made of resin as described above, which reduces the weight of the display device B1.

[0058] Generally, when the display device B1 is attached to the ceiling surface 300 without the metal fittings 101, the upper wall 100 is fixed to the ceiling surface 300 with the screws 110a and 110b, and the reaction force of the weight of the display device B1 is applied directly to the upper wall 100 of the main body 1 from the heads of the screws 110a and 110b. For this reason, the strength of the main body 1 made of resin is insufficient, and there is a possibility that the upper wall 100 may be deformed or damaged.

[0059] Therefore, in the display device B1, a metal mounting plate 10 housed in the main body 1 is used to prevent deformation or damage to the upper wall 100. However, if the upper wall 100 has enough strength to prevent deformation or damage, the mounting plate 10 does not need to be used.

[0060] (2-2-4a) Opposite side The mounting plate 10 includes a facing portion 10A that faces the upper wall 100. The above-mentioned two types of pairs of mounting holes are also formed in the facing portion 10A.

[0061] (2-2-4b) A pair of first mounting holes for plates and a pair of second mounting holes for plates The facing portion 10A has a pair of first plate mounting holes 16a, 16b and a pair of second plate mounting holes (17a1, 17a2), 17b.

[0062] That is, the first mounting portion 116 described above further includes a pair of first plate mounting holes 16a, 16b in addition to the pair of first wall mounting holes 116a, 116b. The second mounting portion 117 further includes a pair of second plate mounting holes (17a1, 17a2), 17b in addition to the pair of second wall mounting holes (117a1, 117a2), 117b.

[0063] The pair of first plate mounting holes 16a, 16b are formed at positions corresponding to the pair of first wall mounting holes 116a, 116b. The pair of second plate mounting holes (17a1, 17a2), 17b are formed at positions corresponding to the pair of second wall mounting holes (117a1, 117a2), 117b.

[0064] The matters explained in (2-2-1) and the like regarding the pair of first wall mounting holes 116a, 116b also apply to the pair of first plate mounting holes 16a, 16b.Furthermore, the matters explained in (2-2-2) and the like regarding the pair of second wall mounting holes (117a1, 117a2), 117b also apply to the pair of second plate mounting holes (17a1, 17a2), 17b.

[0065] The facing part 10A further has a power supply hole 15 into which the power supply line 303 is drawn.

[0066] In this way, in the display device B1 of this embodiment, a metal facing portion 10A is interposed between the upper wall 100 of the main body 1 and the heads of the screws 110a and 110b, so that even when the resin upper wall 100 is fixed with the screws 110a and 110b, deformation or damage to the upper wall 100 can be prevented.

[0067] (2-2-5) Ribs on the top wall The upper wall 100 further has ribs 120. The ribs 120 are erected around the pair of first wall mounting holes 116a, 116b and the pair of second plate mounting holes (17a1, 17a2), 17b.

[0068] This improves the strength of the upper wall 100. Furthermore, when the main body 1 is fixed with the screws 110a and 110b, the direction of the screws 110a and 110b can be restricted.

[0069] (2-2-6) Metal fittings 5, the metal fitting 101 has a pair of nut bolts 106a, 106b and a pair of metal fitting mounting holes (107a1, 107a2), 107b. The metal fitting 101 also has a power supply hole 105 into which the power line 303 is drawn.

[0070] One of the pair of metal fitting mounting holes (107a1, 107a2), 107b (metal fitting mounting hole 107b in this embodiment) includes an elongated hole 103 (first elongated hole) extending in the direction of the straight line connecting the pair of nut-equipped bolts 106a, 106b (the same direction as the first direction when the upper wall 100 is attached to the ceiling surface 300 via the metal fitting 101). Note that, because the metal fitting 101 is lighter than the display device B1 and does not require temporary fastening, the metal fitting mounting hole 107b does not include an element corresponding to the insertion hole 102 of the display device B1.

[0071] The pair of nut bolts 106a, 106b are installed at positions corresponding to the pair of first wall mounting holes 116a, 116b. The pair of metal fitting mounting holes (107a1, 107a2), 107b are formed at positions corresponding to the pair of second wall mounting holes (117a1, 117a2), 117b (and the pair of second plate mounting holes (17a1, 17a2), 17b).

[0072] The display device B1 is attached to the ceiling surface 300 via such metal fittings 101. The diameter of the nuts is larger than the diameter of the heads of the screws 110a and 110b (see FIG. 5), and the force per unit area at the contact portion between the nuts and the upper wall 100 is weak, so deformation of the upper wall 100 is suppressed even with the main body 1 made of resin.

[0073] (3) Installation example The display device B1 is attached to the ceiling surface 300 after the light source unit A1 and the display panel 20 have been removed from the main body 1. Specifically, the attachment is performed in one of the following two procedures.

[0074] (3-1) Installation example 1: Using metal fittings In this example, first, the metal fitting 101 is fixed to the ceiling surface 300 by a pair of screws 110a, 110b. In more detail, for example, as shown in Fig. 5, the pair of screws 110a, 110b pass through a pair of metal fitting mounting holes (107a1, 107a2), 107b of the metal fitting 101 and are screwed into a pair of screw holes 301b, 302a, thereby fixing the metal fitting 101 to the ceiling surface 300.

[0075] Next, the pair of nut bolts 106a, 106b of the metal fitting 101 are inserted into the pair of first wall mounting holes 116a, 116b in the top wall 100 of the main body 1 from the large hole side. Next, by rotating the top wall 100 (main body 1), the position of the pair of nut bolts 106a, 106b moves from the large hole side to the small hole side. Thereafter, the nuts are tightened, and thereby the top wall 100 of the main body 1 is fixed to the ceiling surface 300 via the metal fitting 101.

[0076] (3-2) Installation example 2: No metal fittings used In this example, first, the screw 110b is screwed partway into the screw hole 302a or 302b. Next, the main body 1 is translated in the first direction so that the head side of the screw 110b is inserted through the insertion hole 102 of the second wall mounting hole 117b in the upper wall 100 (and the second plate mounting hole 17b in the mounting plate 10) and displaced toward the elongated hole 103. This temporarily fastens the upper wall 100 of the main body 1 to the ceiling surface 300.

[0077] Next, the screw 110a is screwed into the screw hole 301b through the second plate mounting hole 17a and the second wall mounting hole 117a2. After that, the screw 110b, which was already screwed in halfway, is screwed in further, thereby fixing the upper wall 100 of the main body 1 directly to the ceiling surface 300 without using the metal fitting 101.

[0078] (4) Summary A display device (B1) according to a first aspect of the present disclosure is attached to a ceiling surface (300). The display device (B1) includes a light source unit (A1), a display panel (20) illuminated by the light source unit (A1), and a box-shaped main body (1) that holds the display panel (20) and the light source unit (A1). The main body (1) has an upper wall (100) at least a portion of which contacts the ceiling surface (300). The upper wall (100) has a first mounting portion (116) and a second mounting portion (117). The first mounting portion (116) is attached to a metal fitting (101) that is fixed to the ceiling surface (300). The second mounting portion (117) can be attached to the ceiling surface (300) without the metal fitting (101).

[0079] According to this embodiment, it is possible to attach the first mounting portion (116) to the metal fittings (101) fixed to the ceiling surface (300), and to attach using the second mounting portion (117) without using the metal fittings (101), so that attachment to the ceiling surface (300) can be performed without the metal fittings (101).

[0080] In addition, in a state where the metal fittings (101) are interposed between the main body (1) and the ceiling surface (300), the metal fittings (101) may not be used for installation, and installation may be possible using the second installation portion (117).

[0081] In the display device (B1) according to the second aspect, in the first aspect, the first mounting portion (116) includes a pair of first mounting holes (116a, 116b). The pair of first mounting holes (116a, 116b) correspond to a first movement of the top wall (100) relative to the ceiling surface (300). The second mounting portion (117) includes a pair of second mounting holes ((117a1, 117a2), 117b). The pair of second mounting holes ((117a1, 117a2), 117b) correspond to a second movement of the top wall (100) relative to the ceiling surface (300) that is different from the first movement.

[0082] According to this embodiment, the two types of mounting holes corresponding to different movements allow the device to be mounted on the ceiling surface (300) without the use of metal fittings (101).

[0083] In the display device (B1) according to the third aspect, in the second aspect, the first movement is a movement in which the top wall (100) rotates around an axis (310) perpendicular to the ceiling surface (300), and the second movement is a movement in which the top wall (100) translates in one direction parallel to the ceiling surface (300).

[0084] According to this embodiment, the pair of first mounting holes (116a, 116b) corresponding to rotational movement can be attached to a metal fitting (101) fixed to the ceiling surface (300), and the pair of second mounting holes ((117a1, 117a2), 117b) corresponding to parallel movement can be attached to the ceiling surface (300) without the metal fitting (101).

[0085] In the display device (B1) according to the fourth aspect, in the third aspect, the pair of first mounting holes (116a, 116b) have shapes that are point-symmetrical with respect to the intersection (311) between the axis (310) and the upper wall (100).

[0086] According to this embodiment, the pair of first mounting holes (116a, 116b) having point-symmetric shapes corresponding to the rotational movement can be used for mounting via the metal fitting (101).

[0087] In a display device (B1) according to a fifth aspect, in the fourth aspect, at least one of the pair of second mounting holes ((117a1, 117a2), 117b) includes an elongated hole (103) extending in the one direction.

[0088] According to this aspect, the pair of second mounting holes ((117a1, 117a2), 117b) including the elongated hole (103) in one direction corresponding to the translation movement allows mounting without using the metal fitting (101).

[0089] In the display device (B1) of the sixth aspect, in the fifth aspect, one of the pair of second mounting holes ((117a1, 117a2), 117b) further includes an insertion hole (102) that expands in a round or square shape from one longitudinal end of the elongated hole (103).

[0090] According to this embodiment, the main body (1) can be temporarily fixed using the insertion hole (102), which facilitates installation without using the metal fittings (101).

[0091] In a display device (B1) according to a seventh aspect, in the sixth aspect, the one direction is a first direction, and the other of the pair of second mounting holes ((117a1, 117a2), 117b) is a second elongated hole extending in a second direction perpendicular to the first direction.

[0092] According to this aspect, translation in a direction (second direction) perpendicular to the one direction (first direction) is also possible, which makes it easier to align the position with respect to the ceiling surface (300).

[0093] In the display device (B1) according to the eighth aspect, in any of the second to seventh aspects, a pair of second mounting holes ((117a1, 117a2), 117b) are formed at a position sandwiched between a pair of first mounting holes (116a, 116b).

[0094] According to this aspect, it is possible to avoid an increase in size compared to when the mounting holes are formed at positions sandwiching the pair of first mounting holes (116a, 116b).

[0095] In a display device (B1) according to a ninth aspect, in any one of the second to eighth aspects, the main body (1) is made of resin. The display device (B1) further includes a metal mounting plate (10) housed in the main body (1). The mounting plate (10) includes a facing portion (10A) facing the upper wall (100). The pair of first mounting holes (116a, 116b) are a pair of first wall mounting holes (116a, 116b). The pair of second mounting holes ((117a1, 117a2), 117b) are a pair of second wall mounting holes ((117a1, 117a2), 117b). The facing portion (10A) has a pair of first plate mounting holes (16a, 16b) and a pair of second plate mounting holes ((17a1, 17a2), 17b). The pair of first plate mounting holes (16a, 16b) are formed at positions corresponding to the pair of first wall mounting holes (116a, 116b). The pair of second plate mounting holes ((17a1, 17a2), 17b) are formed at positions corresponding to the pair of second wall mounting holes ((117a1, 117a2), 117b).

[0096] According to this embodiment, even when the upper wall (100) of the resin body (1) is fixed with the screws (110a, 110b), the metal facing portion (10A) is interposed between the upper wall (100) of the body (1) and the heads of the screws (110a, 110b), so deformation or damage to the upper wall (100) can be prevented.

[0097] In a display device (B1) according to a tenth aspect, in the ninth aspect, the upper wall (100) further includes ribs (120). The ribs (120) are provided around the pair of first wall mounting holes (116a, 116b) and the pair of second wall mounting holes ((117a1, 117a2), 117b).

[0098] This embodiment can improve the strength of the upper wall 100. When the main body 1 is fixed with the screws 110a, 110b, the direction of the screws 110a, 110b can be restricted.

[0099] In the ninth or tenth aspect, the metal fitting (101) has a pair of nut bolts (106a, 106b) and a pair of metal fitting mounting holes ((107a1, 107a2), 107b). The pair of nut bolts (106a, 106b) are installed at positions corresponding to the pair of first wall mounting holes (116a, 116b). The pair of metal fitting mounting holes ((107a1, 107a2), 107b) are formed at positions corresponding to the pair of second wall mounting holes ((117a1, 117a2), 117b). This allows mounting via the metal fitting (101). [Explanation of symbols]

[0100] B1 Display device A1 Light Source Unit 20 Display panel 11 Power supply 1 Main unit 100 Upper Wall 116 First mounting part 116a, 116b: a pair of first mounting holes (a pair of first wall mounting holes) 117 Second mounting part (117a1, 117a2), 117b Pair of second mounting holes (pair of second wall mounting holes) 102 Insertion hole 103 long hole 120 Ribs 10 Mounting plate 10A Facing part 16a, 16b Pair of first mounting holes for plates (17a1, 17a2), 17b Pair of second mounting holes for plates 101 Metal fittings 106a, 106b Pair of nuts and bolts (107a1, 107a2), 107b A pair of metal fitting mounting holes 300 Ceiling surface

Claims

1. A display device attached to a ceiling surface, A light source unit; a display panel illuminated by the light source unit; a box-shaped main body that holds the display panel and the light source unit, the main body has an upper wall at least a portion of which contacts the ceiling surface; The upper wall is a first mounting portion that is attached to a metal fitting fixed to the ceiling surface and includes a pair of first mounting holes; a second mounting portion including a pair of second mounting holes different from the pair of first mounting holes and capable of being mounted to the ceiling surface without using the metal fittings; Display device.

2. the first mounting portion includes the pair of first mounting holes corresponding to a first movement of the upper wall relative to the ceiling surface, the second mounting portion includes the pair of second mounting holes corresponding to a second movement of the upper wall relative to the ceiling surface that is different from the first movement of the upper wall. The display device according to claim 1 .

3. the first movement is a movement in which the upper wall rotates around an axis perpendicular to the ceiling surface, The second movement is a movement in which the upper wall moves parallel to one direction parallel to the ceiling surface. The display device according to claim 2 .

4. the pair of first mounting holes have shapes that are point-symmetric with respect to an intersection point between the axis and the upper wall; The display device according to claim 3 .

5. At least one of the pair of second mounting holes includes an elongated hole extending in the one direction. The display device according to claim 4 .

6. One of the pair of second mounting holes further includes an insertion hole expanding into a round or square shape from one end of the elongated hole in the longitudinal direction. The display device according to claim 5 .

7. the one direction is a first direction, the other of the pair of second mounting holes is a second elongated hole extending in a second direction perpendicular to the first direction; The display device according to claim 6.

8. The pair of second mounting holes are formed at positions sandwiched between the pair of first mounting holes. The display device according to any one of claims 2 to 7.

9. The main body is made of resin, Further provided is a metal mounting plate housed in the main body, the mounting plate includes a facing portion facing the upper wall, the pair of first mounting holes are a pair of first wall mounting holes, the pair of second mounting holes are a pair of second wall mounting holes, The facing portion is a pair of first plate mounting holes formed at positions corresponding to the pair of first wall mounting holes; a pair of second plate mounting holes formed at positions corresponding to the pair of second wall mounting holes; have, A display device according to any one of claims 2 to 8.

10. The upper wall further includes ribs extending from the pair of first wall mounting holes and the pair of second wall mounting holes. The display device according to claim 9 .

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