Electrical equipment and electrical equipment installation methods

Abstract

To facilitate mounting an electrical device.SOLUTION: An electrical device includes a body including an electrical component, and an attachment member fixed to a ceiling surface for mounting the body on the ceiling surface; the electrical device being configured so that one of the attachment member and the body includes a support shaft and the other one includes a hook part to be hooked on the support shaft, one of the attachment member and the body includes a regulation hole and the other one includes a regulation member which is engaged with the regulation hole to regulate vertical motion of the member, a fixing-side member disposed on the attachment member and a body-side member disposed on the body forms a catch structure for fixation and releasing the fixation, the hook part is hooked on the support shaft to turn the body suspended on the attachment member, a regulation part slides the body with respect to the attachment member so as to be engaged with the regulation hole thereby regulating vertical motion of the body with the regulation member and the regulation hole, and the body-side member is caught by the fixing-side member to fix the position of the body in a predetermined position.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an electrical device including an electrical component and a method for mounting the electrical device on a predetermined surface. [Background technology]

[0002] Conventionally, various electrical devices are fixed to the walls or ceilings of rooms. For example, installing electrical devices on a ceiling can require workers to work in positions not commonly used in daily life, or at height. To facilitate installation, Patent Document 1 discloses a lighting fixture that can be installed using a mounting member fixed to the ceiling. A worker attaches one end of the lighting fixture to the mounting member and connects the lighting fixture and the mounting member with a hanging cord. With the lighting fixture and the mounting member open like a clamshell, the worker performs wiring work to supply power to the lighting fixture. After completing the wiring, the worker closes the open lighting fixture and secures it to the mounting member with screws. Patent Document 2 discloses a method for preventing electrical devices from falling by connecting a supporting bracket fixed to the ceiling in advance to the mounting bracket of the electrical device with a wire.

[0003] Patent Document 3 discloses a method for attaching a fixture body to a ceiling. An operator fixes a mounting frame with hooks to the ceiling in advance and hangs a hanging bracket attached to the fixture body on the hook of the mounting frame. Two bolts for fixing the fixture body are provided on one end of the mounting frame. Two notches are formed in the fixture body corresponding to these two bolts. The operator rotates the fixture body hanging from the hook, passes the two bolts of the mounting frame, which have nuts attached in advance, through the notches in the fixture body, and tightens the nuts to fix the fixture body. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2018-133257 [Patent Document 2] Japanese Patent Application Publication No. 6-88596 [Patent Document 3] Japanese Utility Model Application Publication No. 1-113696 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the above-mentioned conventional techniques require screwing and bolt and nut tightening. When installing electrical equipment, as well as during maintenance, both the removal and installation of electrical equipment are performed, and these tasks require tools. The worker must hold the tool in at least one hand while working, and there is a risk that the tool may fall during the work.

[0006] The present invention has been made in view of the problems with the prior art described above, and has as its object to provide an electrical device and an electrical device mounting method that allow for easy mounting work. [Means for solving the problem]

[0007] The electrical device disclosed herein is an electrical device that includes a main body including electrical components, and an attachment member that is fixed to a ceiling surface to attach the main body to the ceiling surface, wherein a support shaft is provided on one of the attachment member and the main body, and a hook portion for hooking onto the support shaft is provided on the other, a regulating hole is formed on one of the attachment member and the main body, and a regulating member that engages with the regulating hole to regulate vertical movement is provided on the other, a fixed side member provided on the attachment member and a main body side member provided on the main body form a catch structure that can be fixed and released, and by hooking the hook portion onto the support shaft and rotating the main body suspended from the attachment member, and sliding the main body relative to the attachment member so that the regulating member engages with the regulating hole, the vertical movement of the main body is regulated by the regulating member and the regulating hole, and the main body side member is caught by the fixed side member, and the position of the main body is fixed in a predetermined position.

[0008] In the above configuration, the regulating hole has a long hole shape that is long in a direction perpendicular to the axial direction of the support shaft, and the multiple regulating members and the multiple regulating holes corresponding to each regulating member may be positioned so that when the main body part is rotated around the support shaft from a state in which the hook portion is hooked onto the support shaft and the main body part is suspended from the mounting member, each regulating member can be inserted into the corresponding regulating hole.

[0009] In the above configuration, the main body may be a surveillance camera including a camera and a camera drive unit that drives the camera.

[0010] In the above configuration, a wire may be further provided, one end of which is attached to the mounting member and the other end of which is attached to the main body portion, and which suspends the main body portion from the mounting member with the hook portion spaced apart from the support shaft.

[0011] In the above configuration, the length of the wire may be such that a worker standing on the floor can perform work related to the electrical component on the main body suspended by the wire from the mounting member.

[0012] In the above configuration, the main body portion may further have a winding portion that winds up a portion of the wire, and by winding up a portion of the wire around the winding portion, the height of the main body portion suspended from the mounting member from the floor surface may be changed.

[0013] The electrical equipment installation method according to the present disclosure is an electrical equipment installation method for installing an electrical equipment including a main body including electrical components and an installation member on a ceiling surface, comprising the steps of: fixing the installation member to the ceiling surface; suspending the main body from the installation member by hooking a hook provided on one of the installation member or the main body member onto a support shaft provided on the other; rotating and sliding the main body suspended from the installation member to engage a regulating member provided on one of the installation member or the main body member with a regulating hole provided on the other of the installation member or the main body member; and sliding the main body member so that the regulating member engages with the regulating hole to regulate the vertical movement of the main body member, and the main body side member of the main body member that constitutes one side of a catch structure that can be fixed and released is caught by a fixed side member of the installation member that constitutes the other side of the catch structure, thereby fixing the main body to a predetermined position. [Effects of the Invention]

[0014] According to the electrical equipment and electrical equipment installation method disclosed herein, the electrical equipment has a main body portion including electrical components and an attachment member for attaching the main body portion to a ceiling surface, and the main body portion can be easily attached to and detached from the attachment member that has been fixed to the ceiling surface in advance, which in turn makes it easy to perform maintenance work on the electrical equipment. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a diagram illustrating the configuration of an electrical device according to this embodiment. [Figure 2] FIG. 2 is a schematic diagram for explaining a method for suspending an electrical device. [Figure 3] FIG. 3 is a schematic diagram for explaining a method for fixing an electrical device. [Figure 4] FIG. 4 is a diagram illustrating the configuration of a surveillance camera, which is an example of an electrical device. [Figure 5] FIG. 5 is a top view of the mounting member for the surveillance camera. [Figure 6]FIG. 6 is a top view and a side view of the main body of the surveillance camera. [Figure 7] FIG. 7 is a perspective view of the main body of the surveillance camera. [Figure 8] FIG. 8 is a diagram for explaining the installation work of the surveillance camera. [Figure 9] FIG. 9 is a diagram for explaining a method for hanging a surveillance camera on a mounting member. [Figure 10] FIG. 10 is a diagram for explaining a method for fixing the surveillance camera. [Figure 11] FIG. 11 is a diagram for explaining the restriction hole and the restriction member. [Figure 12] FIG. 12 is a diagram for explaining the catch structure. [Figure 13] FIG. 13 is a diagram illustrating another example of the configuration of an electrical device. [Figure 14] FIG. 14 is a diagram for explaining another example of how to attach an electrical device. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, an embodiment of an electrical device and an electrical device installation method according to the present invention will be described with reference to the accompanying drawings. Fig. 1 is a diagram illustrating the configuration of an electrical device 1 according to this embodiment. Figs. 2 and 3 are schematic diagrams illustrating a method for suspending and fixing the electrical device 1, respectively. In each of the drawings described in this embodiment, three orthogonal axes, X, Y, and Z, are shown so that the relationship between the illustrated components can be understood. In this embodiment, the XY plane is assumed to be parallel to the ceiling, and the description will be given with the Z-axis positive direction as up, the X-axis positive direction as right, and the Y-axis positive direction as forward.

[0017] The electrical device 1 can be attached to a ceiling surface, i.e., the underside of a ceiling, for use. The location where the electrical device 1 is attached is not particularly limited, and the electrical device 1 can be attached to a ceiling surface in various places, such as an entrance, a room, a corridor, a toilet, a bathroom, a storeroom, etc. Hereinafter, the ceiling surface will be simply referred to as a ceiling in the following description.

[0018] As shown in Fig. 1, the electrical device 1 includes a main body 200 including electrical components, and a mounting member 100 for mounting the main body 200 to a ceiling. The mounting member 100 is fixed to the ceiling in advance. There are no particular limitations on the method for fixing the mounting member 100, and for example, the mounting member 100 is fixed to the ceiling with fastening members using a plurality of through holes 101 formed in the mounting member 100. There are also no particular limitations on the type of fastening member, and for example, screws, bolts, nuts, etc. are used as fastening members.

[0019] The mounting member 100 shown in Fig. 1 has a main body shape formed by bending a thin rectangular metal plate into a U-shape and then bending the open side edges of the U-shaped cross section outward on both sides. The mounting member 100 includes a base portion 100a that contacts the ceiling, two support portions 100b that extend downward (in the negative Z-axis direction) from both ends of the base portion 100a, and two mounting portions 100c that extend in the front-to-rear direction (in the Y-axis direction) parallel to the ceiling from ends of the support portions 100b that are spaced apart from the ceiling. When the mounting member 100 is fixed to the ceiling, the lower surfaces of the mounting portions 100c are parallel to the base portion 100a, i.e., the ceiling.

[0020] The mounting member 100 includes a support shaft 110 that connects the support portions 100b. The support shaft 110 has a rod shape that is long in the left-right direction (X-axis direction) perpendicular to the extension direction of the mounting portions 100c. The support shaft 110 has, for example, a round rod shape. When the mounting member 100 is fixed to a ceiling, the axial direction of the support shaft 110 becomes parallel to the ceiling. When the main body portion 200 is mounted to the ceiling, the support shaft 110 supports the main body portion 200, so that the main body portion 200 is suspended from the mounting member 100.

[0021] A plurality of restriction holes 130 are provided in the mounting portion 100c of the mounting member 100. The restriction holes 130 are through-holes that are elongated in a direction intersecting the axial direction of the support shaft 110. In the elongated hole direction, the restriction holes 130 include a plurality of regions that have different widths in a direction perpendicular to the elongated hole direction. The restriction hole 130 shown in FIG. 1 has an elongated hole shape that is elongated in the front-to-rear direction (Y-axis direction) perpendicular to the axial direction of the support shaft 110, with a circular hole on the rear side (negative Y-axis direction side) and a square hole on the front side connected together, and the square hole on the front side has a narrower width in the left-right direction than the circular hole on the rear side.

[0022] A through hole 150 is formed in the base portion 100a of the mounting member 100 to pass the distribution cable 300 through. For example, the distribution cable 300 extending from above the ceiling passes through the through hole 150 in the base portion 100a and is routed to the main body portion 200. A wire mounting portion 140 for mounting the wire 400 and a fixed side member 120 that constitutes one side of the catch structure are provided on the underside of the base portion 100a.

[0023] 1 shows the back of main body 200, which has electrical components on its surface. On the back of main body 200, there are provided hook portion 210 folded back from the back into a hook shape, main body side member 220 constituting the other side of the catch structure, and multiple restricting members 230. Also provided on the back of main body 200 are wire attachment portion 240 for attaching wire 400, winding portion 260 for winding wire 400, and terminal 250 for connecting distribution cable 300.

[0024] 1, the hook portion 210 is formed so as to be hooked onto the support shaft 110 of the mounting member 100. Each of the plurality of restricting members 230 is provided corresponding to a restricting hole 130 of the mounting member 100, and can be inserted into a circular hole on the rear side of the restricting hole 130, as shown by the dashed arrow in FIG.

[0025] The main body side member 220 of the main body part 200 and the fixed side member 120 of the mounting member 100 form a catch structure. As shown by the dashed arrow in Fig. 1, the main body side member 220 is fitted and locked with the fixed side member 120, thereby making it possible to fix the position of the main body part 200 relative to the mounting member 100 fixed to the ceiling. The catch structure prevents the main body side member 220 and the fixed side member 120 from being released from their connection unless a predetermined force is applied to the main body side member 220 in a direction away from the fixed side member 120.

[0026] 1 shows an example of a catch structure called a ball catch, in which the fixed-side member 120 has a head at the tip of the shaft that is wider in the left-right direction (X-axis direction) than the shaft, and the main body-side member 220 includes two balls biased by a biasing member. The structure of a ball catch is conventionally known and will not be described in detail, but by inserting the head of the fixed-side member 120 between the two balls of the main body-side member 220, the head of the fixed-side member 120 enters an engaged state where it is caught by the two balls biased by the biasing member.

[0027] 1 is an example, and the type of catch structure is not particularly limited as long as it is a structure that can fix main body 200 to mounting member 100 and can release this fixation by applying a predetermined force. For example, it may be a catch structure called a roller catch that uses a cylindrical roller (see FIG. 12), a catch structure that uses a magnet, or a catch structure that uses a latch.

[0028] 1, wire attachment portion 140 of mounting member 100 and wire attachment portion 240 of main body portion 200 are connected by wire 400. When hook portion 210 of main body portion 200 is spaced apart from support shaft 110 of mounting member 100, main body portion 200 is suspended from mounting member 100 by wire 400.

[0029] For example, the length of the wire 400 is such that it can connect the main body 200 to the mounting member 100 fixed to the ceiling when the main body 200 is placed on a workbench used by a worker for wiring, adjustment, inspection, etc.

[0030] When attaching the main body 200 to the mounting member 100, the worker can wind a portion of the wire 400 around the winding part 260 so that the excess wire 400 does not get in the way of the work. The winding part 260 has a structure in which a shaft part extends in a direction away from the back surface of the main body 200, and a disk having an outer diameter larger than the shaft diameter of the shaft part is attached to one end of the shaft part away from the back surface. Between the disk and the back surface of the main body 200, the winding part 260 forms a spool structure that allows the wire 400 to be wound around the shaft part.

[0031] The configurations of the wire attachment units 140, 240 and the winding unit 260 shown in FIG. 1 are merely examples, and these configurations are not particularly limited as long as the main body 200 and the attachment member 100 can be connected by the wire 400 and at least a portion of the wire 400 can be wound up. For example, the winding unit 260 may be configured to automatically wind up the wire 400 using a biasing member. Alternatively, for example, the winding unit 260 may have a handle for winding up the wire, and an operator may manually turn the handle to wind up the wire. When the wire 400 is pulled out and used from an automatic or manual winding-type winding unit 260 provided on the main body 200, a wire fixing unit that can fix and release the wire 400 may be provided so that the operator can adjust the length of the wire 400.

[0032] A power supply line that supplies power to the electric device 1 is connected to the terminal 250 of the main body 200. By connecting the terminal 350 of the wiring cable 300 to the terminal 250 of the main body 200, power is supplied from the wiring cable 300 to the electric components of the main body 200. Each of the terminals 250, 350 may include one or more signal lines used for communication between the electric device 1 and an external device.

[0033] Fig. 2 is a diagram for explaining a method for suspending the electric device 1. Fig. 3 is a schematic diagram for explaining a method for fixing the electric device 1. Figs. 2 and 3 schematically show the configuration necessary for explaining the suspension method.

[0034] The electrical components of the main body 200 are housed inside the case 200a of the main body 200. As shown in FIG. 2(a), with the mounting member 100 fixed to the ceiling 10, the worker can connect the wire mounting portion 140 of the mounting member 100 and the wire mounting portion 240 of the main body 200 with a wire 400.

[0035] By winding a portion of wire 400 around winding portion 260, the worker can adjust the distance between mounting member 100 and main body 200, i.e., the height from the floor of main body 200 suspended from mounting member 100 on ceiling 10. Adjusting the length of wire 400 makes it possible to prevent main body 200 from falling and colliding with the floor, resulting in damage. With main body 200 suspended from the ceiling, the worker can perform tasks such as wiring to connect terminal 350 of distribution cable 300 to terminal 250 of main body 200, and adjustment and inspection of electrical device 1.

[0036] As shown by the arrow in FIG. 2(b), the worker hooks the hook portion 210 of the main body portion 200 onto the support shaft 110 of the mounting member 100. As shown in FIG. 2(c), with the main body portion 200 hanging from the mounting member 100, the worker can perform tasks such as wiring the distribution cable 300, adjusting and inspecting the electrical device 1. The worker can store the wire 400 by winding a portion of the wire 400 around the winding portion 260. The worker rotates the main body portion 200 as shown by the arrow in FIG. 2(c) to perform the fixing work of fixing the main body portion 200 to the mounting member 100.

[0037] The worker rotates the main body portion 200 around the support shaft 110 of the mounting member 100, and inserts the corresponding regulating members 230 of the main body portion 200 into each of the regulating holes 130 of the mounting member 100, as shown in Figure 3(a), and brings a portion of the back surface of the main body portion 200 into contact with the underside of the mounting portion 100c, i.e., a portion of the underside of the mounting member 100.

[0038] The restricting holes 130 of the mounting member 100 and the restricting members 230 of the main body 200 are positioned so that, when the main body 200 is rotated around the support shaft 110, each restricting member 230 is inserted into the corresponding restricting hole 130. The restricting holes 130 and the restricting members 230 are positioned so that, when the main body 200 is rotated with the upper part of the support shaft 110 abutting against the hook portion 210 and the side part of the support shaft 110 abutting against the back surface of the main body 200, as shown in FIG. 2( c), for example, the restricting holes 130 and the restricting members 230 are inserted into the circular hole behind the restricting hole 130. This allows the operator to easily insert the multiple restricting members 230 into the corresponding restricting holes 130.

[0039] 1, the mounting portion 100c of the mounting member 100 is located at a position spaced downward from the ceiling. Therefore, when the back surface of the main body portion 200 is in contact with the mounting portion 100c, a space is formed between the back surface of the main body portion 200 and the base portion 100a of the mounting member 100. The wire mounting portion 140 and the fixed-side member 120 of the mounting member 100, and the wire mounting portion 240, terminal 250, and winding portion 260 of the main body portion 200 are accommodated in this space.

[0040] Each of the restricting members 230 of the main body 200 includes a shaft and a head having an outer diameter larger than the shaft diameter of the shaft. When the back surface of the main body 200 is brought into contact with the mounting part 100c, as shown in Fig. 3(a), the head of the restricting member 230 inserted into the circular hole on the rear side of the restricting hole 130 of the mounting part 100 is exposed from the circular hole to the ceiling side (see Fig. 11(a)).

[0041] With the back surface of the main body 200 pressed against the underside of the mounting member 100, i.e., with the head of the restricting member 230 exposed toward the ceiling through the restricting hole 130, the worker slides the main body 200 forward (in the positive direction of the Y axis) as shown by the arrow in Fig. 3(a). As a result, as shown in Fig. 3(b), the head of the restricting member 230 slides from the circular hole of the restricting hole 130 to the square hole (see Fig. 11(b)).

[0042] Because the square hole on the front side of the restriction hole 130 is narrower in the left-right direction (X-axis direction) than the circular hole, the head of the restriction member 230 cannot pass downward through the square hole, and the restriction member 230 and the restriction hole 130 restrict movement of the main body unit 200 in the up-down direction (Z-axis direction). Furthermore, the shaft of the restriction member 230 inserted into the square hole of the restriction hole 130 also restricts movement of the main body unit 200 in the left-right direction (X-axis direction). When the main body unit 200 slides forward, as shown in FIG. 3( b), the fixed-side member 120 constituting the catch structure catches the main body-side member 220, fixing the position of the main body unit 200 and restricting movement of the main body unit 200 in the front-back direction (Y-axis direction). In this way, the main body unit 200 is fixed in a predetermined position relative to the mounting member 100 fixed to the ceiling 10.

[0043] When removing the main body 200, the worker slides the main body 200 rearward (in the negative direction of the Y-axis) to release the fixation by the catch structure. As a result, the main body-side member 220 is released from the fixed-side member 120, and the restricting member 230 slides rearward within the restricting hole 130, allowing the head of the restricting member 230 to pass downward through the circular hole behind the restricting hole 130. At this time, for example, as shown in FIG. 3( a), the hook portion 210 of the main body 200 comes into contact with the support shaft 110 of the mounting member 100. Furthermore, the hook portion 210 and the support shaft 110 are positioned such that they are supported by the support shaft 110 even when the hook portion 210 moves downward. The worker can recognize that the restriction by the restricting hole 130 and the restricting member 230 and the fixation by the catch structure have been released because the hook portion 210 of the main body 200, which has slid rearward, comes into contact with the support shaft 110. When the worker moves main body 200 downward to remove restricting member 230 of main body 200 from restricting hole 130, hook portion 210 engages with support shaft 110, enabling main body 200 to be suspended from mounting member 100 and preventing main body 200 from falling. The worker can rotate main body 200 around support shaft 110 to suspend main body 200 from mounting member 100, and then remove hook portion 210 from support shaft 110 and remove wire 400 from winding portion 260 and extend it, thereby lowering main body 200.

[0044] In this way, the worker can attach and detach the main body 200 to and from the mounting member 100 that has been fixed to the ceiling in advance without using any tools. The worker can easily attach and detach the main body 200 using both hands.

[0045] Next, a specific structure and mounting method of the electrical device 1 will be described using an example in which the electrical device 1 is a surveillance camera. Fig. 4 is a diagram for explaining the configuration of the surveillance camera 1 (electrical device). Fig. 5 is a top view of the mounting member 100 shown in Fig. 4. Fig. 6 is a top view and a side view of the main body 200 shown in Fig. 4. Fig. 7 is a perspective view of the main body 200 shown in Fig. 4, viewed obliquely from below.

[0046] Mounting member 100 is fixed to the ceiling using through-hole 101. As shown in Fig. 4, terminal 350 of wiring cable 300 passes through through-hole 150 of mounting member 100 and is connected to terminal 250 on main body 200 of surveillance camera 1. A rubber or resin grommet is attached to through-hole 150 to prevent wiring cable 300 from coming into contact with metal mounting member 100 and being damaged.

[0047] The mounting member 100 has four restriction holes 130 formed at positions on both outer sides in the left-right direction (X-axis direction) and on both outer sides in the front-rear direction (Y-axis direction). A wire mounting portion 140 and a fixed-side member 120 are provided on the front side (positive Y-axis direction) of the mounting member 100. A cylindrical support shaft 110 whose axial direction is in the left-right direction (X-axis direction) is provided on the front end of the mounting member 100.

[0048] On the back surface of main body 200, which is surveillance camera 1, a hook portion 210 is formed at the front end, and a main body side member 220 that forms a catch structure with fixed side member 120 of mounting member 100, and four restricting members 230 that correspond to each restricting hole 130 of mounting member 100 are provided. Also, on the back surface of main body 200, a wire mounting portion 240, a winding portion 260, and a terminal 250 for supplying power to main body 200 of surveillance camera 1 are provided.

[0049] As shown in FIG. 6, main body 200 includes camera 201, control unit 202, power supply unit 203, and camera drive unit 204. Camera 201 includes a TOF (Time of Flight) camera that can capture a subject three-dimensionally using infrared light, and a visible light camera. However, the number and types of cameras 201 are not particularly limited. For example, camera 201 may be composed of only visible light cameras, or may be composed of only TOF cameras, or may include three or more types of cameras. Furthermore, for example, camera 201 may include an infrared camera for capturing images in dark places in addition to a TOF camera and a visible light camera.

[0050] Camera driving unit 204 includes an actuator such as a motor or a solenoid, and can rotate camera 201 around a predetermined axis 201a as shown by the arrow in Fig. 7. When surveillance camera 1 is attached to the ceiling, camera driving unit 204 can rotate camera 201, thereby enabling it to capture an image of a wider range than when camera 201 is fixed in position.

[0051] Power supply unit 203 converts the power supplied from distribution cable 300 via terminal 250 on the rear surface into a predetermined power and supplies it to control unit 202. For example, power supply unit 203 performs voltage conversion, rectification, smoothing, etc. of the AC power supplied from distribution cable 300, and supplies a DC voltage of a predetermined voltage (e.g., 5 V) to control unit 202. The power supplied by power supply unit 203 is supplied to camera 201 and camera driving unit 204 via control unit 202, thereby enabling camera driving unit 204 to drive camera 201 and camera 201 to capture an image.

[0052] The control unit 202 controls the camera 201 and the camera driving unit 204. For example, a board-type computer equipped with a storage unit and a communication unit is used as the control unit 202. By operating an external device communicatively connected to the communication unit of the control unit 202, an operator can change settings related to the operation of the surveillance camera 1, or receive images acquired by the surveillance camera 1 and images stored in the storage unit to the external device and visually check them. The external device may be a computer device or a mobile terminal such as a smartphone or tablet. Furthermore, the method of communication between the control unit 202 and the external device is not particularly limited, and may be wireless communication or wired communication via a communication line included in the distribution cable 300.

[0053] Various electrical components are provided inside the main body 200. For example, a large heat sink or a cooling fan may be provided to prevent heat generation. Even if the main body 200 is heavy, the worker can easily install the surveillance camera 1 using the wire 400 and the hook portion 210.

[0054] FIG. 8 is a diagram illustrating the installation work of the surveillance camera 1. FIG. 9 is an enlarged view of a portion of FIG. 8(b). The worker first fixes the mounting member 100 to the ceiling. Since the mounting member 100 is lighter than the main body 200, the worker can easily perform the work of fixing the mounting member 100. The worker attaches one end of the wire 400 to the wire attachment portion 140 of the mounting member 100 fixed to the ceiling, so that the wire 400 hangs down from the ceiling.

[0055] The worker attaches the floor-side tip of the hanging wire 400 to the wire attachment portion 240 of the main body 200. For example, the worker can perform this attachment work of the wire 400 with the main body 200 placed on a workbench. Note that there is no particular limitation on the timing at which the wire 400 is connected to the mounting member 100 and the main body 200. For example, the wire 400 and the mounting member 100 may be connected before the mounting member 100 is fixed to the ceiling, or the main body 200 and the wire 400 may be connected first, and then the mounting member 100 and the wire 400 may be connected.

[0056] 8(a), the worker can suspend the main body 200 connected by the wire 400 from the mounting member 100 fixed to the ceiling. At this time, the worker can adjust the distance from the mounting member 100 to the main body 200, i.e., the height from the floor to the main body 200, by winding a portion of the wire 400 around the winding portion 260.

[0057] For example, a worker uses a stepladder to attach main body unit 200 to mounting member 100. Before climbing up the stepladder, the worker stands on the floor and winds a portion of wire 400 around winding portion 260, so that main body unit 200 is suspended at an appropriate height, and then the worker can climb up the stepladder without holding main body unit 200 in his / her hands. After climbing up the stepladder, the worker suspends main body unit 200, which is suspended by wire 400, from mounting member 100, as shown in FIG. 8(b). Specifically, as shown in FIG. 9, hooking portion 210 of main body unit 200 onto support shaft 110 of mounting member 100 causes main body unit 200 to be suspended from mounting member 100. This operation does not require any tools, so the worker can use both hands to perform the operation. Because main body 200 is suspended by wire 400 at a height where it does not come into contact with the floor, main body 200 will not fall and hit the floor even if the worker lets go of main body 200. After main body 200 is hung by hooking it onto support shaft 110, the worker can wind wire 400 around winding part 260 so that wire 400 does not get in the way of the work.

[0058] As shown in Fig. 8(b), with the main body 200 suspended from the mounting member 100, the worker can perform wiring work to connect terminals 350 of the distribution cable 300 extending from the ceiling to terminals 250 of the main body 200. Depending on the length of the distribution cable 300, the wiring work can be performed by placing the main body 200 on a workbench installed on the floor, by suspending the main body 200 by wires 400 as shown in Fig. 8(a), or by suspending the main body 200 from the mounting member 100 as shown in Fig. 8(b).

[0059] After the wiring work is completed, the main body 200 connected to the distribution cable 300 is hung from the mounting member 100, and then the work of fixing the main body 200 is carried out. Fig. 10 is a diagram for explaining a method of fixing the main body 200. Fig. 11 is an enlarged view of the restriction hole 130 and the restriction member 230 shown in Fig. 10. Fig. 12 is an enlarged view of the catch structure shown in Fig. 10. 11(a) and 12(a) correspond to FIG. 10(b), and FIG. 11(b) and 12(b) correspond to FIG. 10(c).

[0060] The worker rotates the main body 200 around the support shaft 110 as shown by the arrow in Fig. 10(a). The worker inserts the four restricting members 230 of the main body 200 into the corresponding restricting holes 130 of the mounting member 100 as shown in Fig. 11(a), so that part of the back surface of the main body 200 comes into contact with part of the underside of the mounting member 100.

[0061] The worker slides the main body 200 forward (in the positive direction of the Y-axis) as shown by the arrow in FIG. 10(b) while keeping a portion of the rear surface of the main body 200 in contact with a portion of the underside of the mounting member 100. As the main body 200 slides forward, the four restricting members 230 of the main body 200 move toward the front of the restricting holes 130 as shown in FIG. 11(b), restricting vertical and horizontal movement of the main body 200. As the main body 200 slides forward, the fixed-side member 120 and the main body-side member 220, which were positioned apart as shown in FIG. 12(a), engage and lock together as shown in FIG. 12(b), fixing the main body 200 and restricting movement of the main body 200 in the front-to-back direction (the Y-axis direction). In this way, the main body 200 is fixed to the mounting member 100 fixed to the ceiling, restricting movement in the front-to-back, horizontal, and vertical directions.

[0062] In the present embodiment, an example has been described in which the mounting member 100 has one support shaft 110, but as shown in Fig. 13(a), the support shaft 110 may include a plurality of shafts 110a, 110b. Similarly, the hook portion 210 of the main body 200 may include a plurality of hook portions 210a, 210b.

[0063] In the present embodiment, an example has been described in which the main body portion 200 is slid in a direction perpendicular to the support shaft 110 of the mounting member 100, but the sliding direction is not limited to this. For example, as shown in FIG. 13(b), the restricting hole 130 of the mounting member 100 may be an elongated hole that is long in the axial direction of the support shaft 110 (X-axis direction), and the restricting member 230 of the main body portion 200 may be inserted into the restricting hole 130, and then the main body portion 200 may be slid in the left-right direction as shown by the arrow. In this case, a catch structure may be configured so that when the main body portion 200 is slid in the left-right direction, the main body side member 220 of the main body portion 200 is caught by the fixed side member 120 of the mounting member 100, thereby fixing the main body portion 200 to the mounting member 100.

[0064] In the present embodiment, an example has been described in which the support shaft 110 is provided on the mounting member 100 and the hook portion 210 is provided on the main body portion 200, but as shown in Fig. 13(c) , an embodiment in which the hook portion 210 is provided on the mounting member 100 and the support shaft 110 is provided on the main body portion 200 may also be used. In this case as well, the support shaft 110 of the main body portion 200 is hooked onto the hook portion 210 of the mounting member 100 to suspend the main body portion 200 from the mounting member 100, and the main body portion 200 is rotated and slid around the support shaft 110, thereby allowing the main body portion 200 to be mounted on the mounting member 100 as described above.

[0065] In the present embodiment, an example has been shown in which the restricting holes 130 are formed in the mounting member 100 and the restricting members 230 are provided in the main body part 200, but as shown in Fig. 13(c), an embodiment is also possible in which the restricting members 230 are provided in the mounting member 100 and the restricting holes 130 are formed in the main body part 200. In this case as well, the main body part 200 can be attached to the mounting member 100 as described above by rotating the main body part 200 suspended from the mounting member 100 and inserting the restricting members 230 into the restricting holes 130.

[0066] In this embodiment, an example has been described in which the electrical device 1 is attached to the ceiling surface of a room, but this does not limit the location where the electrical device 1 can be attached. In this embodiment, attachment to a ceiling surface includes attachment to a high position overlooking the room, such as a ceiling. For example, in an open-ceiling hall or the like where the distance from the floor to the ceiling is too great, as shown in FIG. 14, the main body 200 may be attached to a mounting member 100 fixed to a wall surface 12. Such attachment of the electrical device 1 is also included in the attachment to a ceiling surface in this embodiment.

[0067] As described above, the electric device 1 includes the main body 200 and the mounting member 100. If the mounting member 100 is fixed to the ceiling in advance, the worker can attach the main body 200 to the mounting member 100 without using tools. The worker can rotate or slide the main body 200 using both hands without using tools. Because the main body 200 can be suspended from the mounting member 100, the worker can easily install the electric device 1. Similarly, the worker can easily remove the electric device 1. [Industrial Applicability]

[0068] As described above, the electrical device and the method for mounting the electrical device according to the present invention are useful for easily performing the mounting work on a predetermined surface. [Explanation of symbols]

[0069] 1. Electrical equipment, surveillance cameras 10 Ceiling 100 Mounting member 110(110a, 110b) Support shaft 120 Fixed side member 130 Regulatory Hole 140, 240 Wire attachment part 150 through holes 200 Main body 201 Camera 202 Control section 203 Power supply section 204 Camera drive unit 210 (210a, 210b) Hook portion 220 Main body side member 230 Regulatory Members 250, 350 terminals 260 Winding section 300 Wiring Cable 400 wire

Claims

1. An electrical device including a main body including an electrical component and a mounting member fixed to a ceiling surface for mounting the main body to the ceiling surface, a support shaft is provided on one of the mounting member and the main body, and a hook portion for hooking onto the support shaft is provided on the other; a restricting hole is formed in one of the mounting member and the main body, and a restricting member is provided on the other of the mounting member and the main body, the restricting member being fitted into the restricting hole to restrict movement in the up and down direction; a fixed-side member provided on the mounting member and a main-body-side member provided on the main body portion constitute a catch structure that can be fixed and released; The hook portion is hooked onto the support shaft, and the main body portion suspended from the mounting member is rotated. The main body portion is then slid relative to the mounting member so that the regulating member fits into the regulating hole. This restricts the vertical movement of the main body portion by the regulating member and the regulating hole, and the main body-side member is caught by the fixed-side member, fixing the main body portion in a predetermined position. An electrical device characterized by:

2. The restriction hole has an elongated hole shape that is long in a direction perpendicular to the axial direction of the support shaft, The plurality of restricting members and the plurality of restricting holes corresponding to each restricting member are provided at positions where each restricting member can be inserted into the corresponding restricting hole when the main body is rotated around the support shaft from a state in which the hook portion is hooked onto the support shaft and the main body is suspended from the mounting member.

2. The electrical device according to claim 1.

3. The main body is a surveillance camera including a camera and a camera driving unit that drives the camera.

3. The electrical device according to claim 1 or 2.

4. An electrical device as described in any one of claims 1 to 3, further comprising a wire having one end attached to the mounting member and the other end attached to the main body portion, the wire suspending the main body portion from the mounting member with the hook portion spaced apart from the support shaft.

5. The electrical device according to claim 4, wherein the length of the wire is such that a worker standing on the floor can perform work related to the electrical component on the main body suspended by the wire from the mounting member.

6. the main body further includes a winding portion that winds a portion of the wire; The height of the main body suspended from the mounting member from the floor surface can be changed by winding a portion of the wire onto the winding portion.

6. The electrical device according to claim 5.

7. An electrical equipment installation method for installing an electrical equipment including a main body including an electrical component and an installation member on a ceiling surface, comprising: a step of fixing the mounting member to the ceiling surface; a step of suspending the main body from the mounting member by hooking a hook portion provided on one of the mounting member and the main body onto a support shaft provided on the other; a step of rotating the main body portion suspended from the mounting member and sliding the main body portion relative to the mounting member, thereby fitting a restricting member provided on one of the mounting member and the main body portion into a restricting hole formed on the other; a step in which, by the sliding movement of the main body part, the restricting member fits into the restricting hole to restrict the movement of the main body part in the up and down direction, and a main body side member of the main body part constituting one side of a catch structure capable of being fixed and released is caught by a fixed side member of the attachment member constituting the other side of the catch structure, thereby fixing the position of the main body part at a predetermined position; Contains An electrical equipment installation method characterized by the above.

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