Lighting fixture

Abstract

To provide a lighting fixture in which a portion projecting from a surface to be attached can be made small, and shadows caused by a flange part and the like can be prevented.SOLUTION: A lighting fixture 1 is mounted so as to be embedded in a recessed hole, and comprises a flat lamp 10, a functional part 20, and a fixture body 30 in which the lamp 10 and the functional part 20 are arranged. The fixture body 30 has a cylinder part 31 in which the lamp 10 is arranged, an opening part 32 that is an opening on one end side of the cylinder part 31, a flange part 33 that protrudes from the opening part 32 in a direction perpendicular to an axial direction of the cylinder part 31, and a hole part 34 provided in the flange part 33 which corresponds to the functional part 20. The opening part 32 and the hole part 34 are arranged side by side in a direction perpendicular to the axial direction of the cylinder part 31, and the center of the opening part 42 is arranged at a position eccentric to the center of the fixture body 1 in a plan view.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to the technology of lighting fixtures. [Background technology]

[0002] There are various known lighting fixtures that are mounted so as to be embedded in a recessed hole formed in a ceiling surface, etc. The lighting fixtures include a flat lamp, a functional unit composed of a motion sensor, an illuminance sensor, etc., and a fixture body in which the lamp and the functional unit are arranged, and the fixture body has a cylindrical part in which the lamp is arranged, an opening which is an opening on one end side of the cylindrical part, a flange part which protrudes from the opening in a direction perpendicular to the axial direction of the cylindrical part, and a hole part in which a hood provided on the flange part and covering a sensor part of the functional unit is arranged (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2012-174588 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the lighting fixture, since the control board and other functional components of the functional unit are arranged inside the flange, the flange is configured to be thick, which results in a large portion of the flange protruding from the mounting surface, such as the ceiling, and may cause shadows to be cast by the flange.

[0005] The present invention has been made in consideration of the above-mentioned circumstances, and has as its object to provide a lighting fixture which can reduce the portion protruding from the mounting surface and which can prevent shadows from being cast by flange portions, etc. [Means for solving the problem]

[0006] The problem to be solved by the present invention has been described above, and the means for solving this problem will now be described.

[0007] That is, the lighting fixture disclosed in the present application has: A lighting fixture that is mounted so as to be embedded in an embedding hole, A flat lamp and A functional part; a fixture body in which the lamp and the functional unit are disposed, The instrument body includes: a tube portion in which the lamp is disposed; An opening at one end of the cylindrical portion; a flange portion protruding from the opening in a direction perpendicular to an axial direction of the cylindrical portion; a hole portion provided in the flange portion corresponding to the functional portion, the opening and the hole are arranged side by side in a direction perpendicular to an axial direction of the cylindrical portion, The center of the opening is disposed at a position eccentric from the center of the instrument body in a plan view.

[0008] In the lighting fixture disclosed in the present application, the device body has a functional component arrangement portion in which a functional component of the functional unit is arranged, It is preferable that the cylindrical portion and the functional component arrangement portion are arranged side by side in a direction perpendicular to the axial direction of the cylindrical portion.

[0009] In the lighting fixture disclosed in the present application, The functional component arrangement unit includes: a side wall portion that protrudes from the flange portion in the axial direction and surrounds a side of the functional component; It is preferable that the housing further includes a cover portion for closing an opening in a direction in which the side wall portion projects.

[0010] In the lighting fixture disclosed in the present application, The cover portion has a notch, It is preferable that an electric wire connected to the functional component extends to the outside of the functional component arrangement portion through the cutout portion. Effect of the Invention

[0011] The present invention has the following advantages. That is, according to the present invention, the portion protruding from the mounting surface can be made small, and shadows caused by flange portions or the like can be prevented. [Brief description of the drawings]

[0012] [Figure 1] 1 is a perspective view showing a lighting fixture according to an embodiment of the present invention; [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] Cross-sectional view of line A-A in Figure 2. [Diagram 5] A partially enlarged cross-sectional view of line A-A in Figure 4. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] A lighting fixture 1 according to an embodiment of the present invention will be described with reference to Figs. 1 to 5. The lighting fixture 1 according to this embodiment is a lighting fixture that is attached so as to be embedded in a recessed hole formed in a ceiling surface, for example. The lighting fixture 1 can be attached not only to a ceiling surface, but also to a wall surface (including an inclined surface) and used as a bracket light. In the following description, the side that emits light from the lighting fixture 1 is the illumination surface side of the lighting fixture 1, and the side of the lighting fixture 1 that faces the surface to which it is attached is the mounting surface side (opposite to the illumination surface side) of the lighting fixture 1. The mounting surface side of the lighting fixture 1 is the back side (rear side) of the lighting fixture 1. In addition, when the direction perpendicular to the surface to which it is attached is the up-down direction of the lighting fixture 1 in a state in which the lighting fixture 1 is attached to the surface to which it is attached, the mounting surface side of the lighting fixture 1 is described as the up-down direction, and the direction directly below the illumination surface side of the lighting fixture 1 is described as the down-down direction. The direction perpendicular to the up-down direction of the lighting fixture 1 is described as the radial direction of the lighting fixture 1. In the following description, the state in which the lighting fixture 1 is viewed from below is a plan view. A side view is a state in which the lighting fixture 1 etc. is viewed from a direction perpendicular to the vertical direction. A cross-sectional view is a state in which the cross-sectional shape of the lighting fixture 1 etc. is viewed. In addition, line α in Fig. 4 indicates an imaginary line that is parallel to the vertical direction and passes through the center of a fixture body 30 (described later), and line β indicates an imaginary line that is parallel to the vertical direction and passes through the center of an opening 32 of the fixture body 30.

[0014] As shown in Fig. 1, the external shape of the lighting fixture 1 is configured to be approximately cylindrical. Note that the external shape of the lighting fixture 1 is not limited to that of the present embodiment, and other than the approximately cylindrical shape, it may be, for example, an elliptical shape, a square shape, a rectangular shape, a polygonal shape, a sector shape, or a combination of these shapes in a plan view.

[0015] As shown in FIGS. 1 to 4, the lighting fixture 1 mainly comprises a lamp 10, a terminal block 11, a terminal block mounting plate 12, a socket 15, a cover 16, a pair of mounting springs 17, a functional part 20, and a fixture body 30.

[0016] The lamp 10 is a lamp having a base structure of GX53 type, which is an example of a flat-type lamp, and is disposed in a tube portion 31 of an instrument body 30, which will be described later. The lamp 10 is configured to be approximately cylindrical. The lamp 10 is configured to be approximately disk-shaped. The lamp 10 is configured so that one end side in the axial direction is in the direction of light irradiation, and the other end in the axial direction has an approximately cylindrical convex portion that is inserted into a central opening of a socket 15, which will be described later. The lamp 10 is not limited to being GX53. The lamp 10 and the socket 15 are not limited to being compatible with a GX53 type base, and may be compatible with a GH76p type base or a GH69h type base.

[0017] The functional unit 20 performs various functions in the lighting device 1 other than emitting light (for example, a function of detecting people). The functional unit 20 is composed of, for example, a human presence sensor, a wireless communication device, a camera, a speaker, a projector, etc. In the present embodiment, the functional unit 20 will be described below as being a human presence sensor, but is not limited to this. The functional unit 20 has a functional component 21. The functional component 21 is a component that constitutes the functional unit 20, and in the present embodiment, is composed of a sensor unit of the human presence sensor, a hood that covers the sensor unit, a control board, etc.

[0018] The device body 30 has a tube portion 31, an opening 32, a flange portion 33, a hole portion 34, a functional component arrangement portion 40, etc. The tube portion 31 is configured to have a substantially cylindrical shape with the vertical direction as the axial direction. The opening portion 32 is an opening at the lower end (one end) of the tube portion 31. The flange portion 33 protrudes from the opening portion 32 in a direction (lateral direction) perpendicular to the axial direction of the tube portion 31. The flange portion 33 is configured to have a substantially disk shape. The hole portion 34 is a through hole provided in the flange portion 33, and is formed corresponding to the position, shape, function, etc. of the functional portion 20. The hole portion 34 communicates with the inside of the functional component arrangement portion 40 described later. The hole portion 34 is configured so that the hood (functional component 21) of the functional portion 20 is exposed downward. Note that the hole portion 34 is not limited to a configuration in which the functional portion 20 is exposed, and may be a configuration in which the functional portion 20 is disposed in the hole portion 34.

[0019] The functional part 20 is arranged in the functional part arrangement part 40. The functional part arrangement part 40 has a side wall part 41 and a cover part 42. The side wall part 41 protrudes upward (towards the other axial end side of the tube part 31) from the upper surface of the flange part 33. The side wall part 41 is configured in a cylindrical shape with an open upper end. The functional parts 21 of the functional part 20, such as a control board, are stored inside the side wall part 41. The side wall part 41 surrounds the sides of the functional parts 21 of the functional part 20, such as a control board. The cover part 42 is a member configured in a cylindrical shape with a bottom, and covers and closes the opening at the upper end of the side wall part 41 (the opening in the protruding direction).

[0020] A terminal block mounting plate 12 on which the terminal block 11 is arranged is provided at the upper end (the other end) of the cylindrical portion 31. The terminal block 11 is connected to an electric wire of an external power source. The terminal block mounting plate 12 is formed by performing a bending process or the like on a flat plate-shaped member, and is fixed to the cylindrical portion 31 by a fixing member such as a screw.

[0021] The socket 15 and other components are arranged within the cylindrical portion 31. The socket 15 is configured so that the lamp 10 can be attached thereto. The socket 15 is fixed to a boss portion provided at the bottom of the cylindrical portion 11 using a screw. The socket 15 is configured in a substantially annular shape and has an opening portion at the center. A protrusion of the lamp 10 is inserted into the opening portion of the socket 15. The lamp 10 is attached to the socket 15 and is provided within the cylindrical portion 31 via the socket 16.

[0022] The cover 16 is a substantially cylindrical member with a bottom, and is provided at the lower end of the tube portion 31 so as to cover the opening 32. The lower end surface of the cover 16 is translucent, and light emitted from the lamp 10 is irradiated downward through the lower end surface of the cover 16. The cover 16 is not an essential component, and can be provided as needed. The mounting spring 17 is a member for mounting the lighting device 1 to the recessed hole, and has elasticity. In the lighting device 1 of this embodiment, the mounting spring 17 is provided at a spring mounting portion 36 provided on the outside of the tube portion 31. The mounting spring 17 is fixed to the spring mounting portion 36 by a fixing member such as a screw. The mounting spring 17 is configured to extend laterally from the tube portion 31. It is to be noted that a configuration having three or more mounting springs 17 may be used. The positions of the mounting spring 17 and the spring mounting portion 36 are not limited to the positions shown in FIG. 2, and can be set to other positions as needed.

[0023] The opening 32 and the hole 34 are arranged side by side in a direction perpendicular (lateral) to the axial direction of the tubular portion 31. The tubular portion 31 and the functional component arrangement portion 40 are arranged side by side in a direction perpendicular (lateral) to the axial direction of the tubular portion 31. The tubular portion 31 and the functional component arrangement portion 40 are arranged so as not to overlap in a planar view. The tubular portion 31 and the functional component arrangement portion 40 are arranged so as to overlap in a side view. The center of the opening 32 is arranged eccentrically from the center of the device body 30 in a planar view.

[0024] As described above, the control boards and the like of the functional parts 21 in the functional section 20 are not stored in the flange section 33, but are stored in the side wall section 41 of the functional part arrangement section 40. The opening 32 and the hole section 34 are arranged side by side in a direction perpendicular to the axial direction of the tube section 31 (lateral direction), and the center of the opening 32 is arranged at a position eccentric from the center of the device body 30 in a plan view. For this reason, the thickness of the flange section 33 can be made relatively thin (the length in the axial direction is made short). Therefore, the portion protruding from the mounting surface such as the ceiling can be made small, and the occurrence of shadows by the flange section 33 and the like can be suppressed. In addition, since the control boards and the like of the functional parts 21 are not stored in the flange section 33, the flange section 33 can be made relatively thin, and the increase in size in the vertical direction can be suppressed. In addition, the reduction in the portion of the flange section protruding from the ceiling surface suppresses the impairment of the design of the interior of the room.

[0025] As described above, the cylindrical portion 31 and the functional component arrangement portion 40 are arranged side by side in a direction perpendicular to the axial direction of the cylindrical portion 31 (laterally), and the lamp 10 and the functional portion 20 are arranged side by side in a direction perpendicular to the axial direction of the cylindrical portion 31 (laterally). Therefore, compared to a case in which the cylindrical portion 31 and the functional component arrangement portion 40 are arranged side by side in the axial direction and the lamp 10 and the functional portion 20 are arranged side by side in the axial direction of the cylindrical portion 31, it is possible to improve the ease of assembly of the lamp 10, the functional portion 20, etc. to the fixture body 30. Furthermore, since the lamp 10 and the functional part 20 are arranged side by side in a direction perpendicular to the axial direction of the tubular part 31 (laterally) and are arranged so as not to overlap in a planar view, the impact of heat generated by the lamp 10 on the functional part 20 can be reduced. In addition, the center (position of line β) of the opening 32 of the fixture body 30 into which the lamp 10 is inserted is offset from the center (position of line α) of the fixture body 30. If the center of the fixture body 30 and the center of the opening 32 were configured to coincide with each other, then the fixture body 30 would have to be enlarged laterally if the tubular portion 31 and the functional portion 20 were arranged side by side. Therefore, by offsetting the center of the fixture body 30 and the center of the opening 32, an increase in the left-right dimension of the fixture body 30 is suppressed. This makes it possible to suppress an increase in the size of the lighting fixture 1.

[0026] As described above, the functional component arrangement section 40 has the side wall section 41 that protrudes from the flange section 33 in the axial direction of the tube section 31 and surrounds the sides of the functional components 21 of the functional section 20 such as a control board, and the cover section 43 that closes the opening in the protruding direction of the side wall section 41. This ensures airtightness within the functional component arrangement section 40 and prevents a decrease in airtightness within the room in which the lighting fixture 1 is arranged.

[0027] 5, the functional component arrangement section 40 has a notch 43. The notch 43 corresponds to an electric wire (not shown) connected to the functional component 21 of the functional section 20, and the electric wire extends to the outside of the functional component arrangement section 40 through the notch 43. The notch 43 is configured so that the electric wire connected to the functional component 21 of the functional section 20 can be inserted therethrough. The notch 43 is formed in the cover section 42. The notch 43 opens toward the center of the lighting fixture 1. The notch 43 is configured to face the side wall of the tube section 31.

[0028] As described above, the electric wires connected to the functional components 21 of the functional unit 20 extend to the outside of the functional component arrangement portion 40 through the cutout portion 43. In this manner, the electric wires connected to the functional components 21 of the functional unit 20 extend to the outside of the functional component arrangement portion 40 from the cover portion 42 arranged on the upper portion of the functional component arrangement portion 40, thereby improving the ease of assembly of the functional unit 20, etc. [Explanation of symbols]

[0029] 1 Lighting equipment 10 Lamp 11 Terminal block 12 Terminal block mounting plate 15 Sockets 16 Bottom cover 17 Mounting spring 20 Functional Part 21 Functional parts 30 Equipment body 31 Cylinder part 32 Opening 33 Flange section 34 Hole 35 Notch 40 Functional parts placement section 41 Side wall 42 Cover part 43 Notch

Claims

1. A lighting fixture that is mounted so as to be embedded in an embedding hole, A flat lamp and A functional part; a fixture body in which the lamp and the functional unit are disposed, The instrument body includes: a tube portion in which the lamp is disposed; An opening at one end of the cylindrical portion; a flange portion protruding from the opening in a direction perpendicular to an axial direction of the cylindrical portion; a hole portion provided in the flange portion corresponding to the functional portion, the opening and the hole are arranged side by side in a direction perpendicular to an axial direction of the cylindrical portion, The center of the opening is disposed at a position eccentric from the center of the instrument body in a plan view. Lighting fixtures.

2. the device body has a functional component arrangement portion in which a functional component of the functional unit is arranged, the cylindrical portion and the functional component arrangement portion are arranged side by side in a direction perpendicular to an axial direction of the cylindrical portion, 2. A lighting fixture according to claim 1.

3. The functional component arrangement unit includes: a side wall portion that protrudes from the flange portion in the axial direction and surrounds a side of the functional component; A cover portion that closes an opening in a protruding direction of the side wall portion.

3. A lighting device according to claim 2.

4. The cover portion has a notch, an electric wire connected to the functional component extends outside the functional component arrangement portion through the notch; 4. A lighting device according to claim 3.

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