Lighting fixtures

Abstract

To provide a lighting device including a sensor unit which achieves good assemblability.SOLUTION: A lighting device 11 includes: a light source part 21; a power supply part 31 which supplies electric power to the light source part 21; a base 41 having a light source attachment part 42 attached with the light source part 21; a frame 51 having an opening 52 which radiates light from the light source part 21; and a sensor unit 71 in which a sensor part 72 is arranged at the radiation direction side of the light source part 21. The base 41 has a through hole 43 located adjacent to the light source attachment part 42. The sensor unit 71 is partially inserted into the through hole 43 and is attached with the base 41 to the frame 51 by an attachment member 46.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a lighting fixture. [Background technology]

[0002] Patent Document 1 discloses a lighting fixture that includes a sensor detection section (sensor unit) provided on a protruding portion.

[0003] The lighting fixture disclosed in Patent Document 1 has a light source (light source unit) and a reflector surrounding the light source. The light source is attached to a lamp socket. The reflector has a mirror-reflecting surface formed on its inner surface, and a protrusion is provided adjacent to a light-transmitting opening at its lower end. The sensor detection unit is provided on the protrusion and faces outward from the light-transmitting opening. According to the lighting fixture disclosed in Patent Document 1, the sensor detection unit is configured to be compact and inconspicuous. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2002-157916 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the lighting fixture of Patent Document 1, the light source is attached to the lamp socket, and the sensor detection unit is attached to the protruding part. That is, the light source and the sensor detection unit are arranged on different members. Therefore, when a worker assembles the sensor detection unit, the assembly work is complicated.

[0006] Therefore, the present invention has been made in consideration of the above problems, and has an object to provide a lighting fixture having a sensor unit that is easy to assemble. [Means for solving the problem]

[0007] The problem to be solved by the present invention has been described above, and the means for solving this problem will now be described.

[0008] That is, the lighting fixture disclosed in the present application has: A light source unit; A power supply unit that supplies power to the light source unit; a base having a light source mounting portion to which the light source unit is attached; a frame having an opening through which light from the light source unit is irradiated; a sensor unit in which a sensor unit is disposed on the irradiation direction side of the light source unit; A lighting fixture comprising: The base has a through hole adjacent to the light source attachment portion, The sensor unit is attached to the frame together with the base by a mounting member, with a portion of the sensor unit being inserted into the through hole. 、 The base has a notch through which an electric wire that electrically connects the light source unit and the power supply unit can be inserted, and the notch is formed integrally with the through hole. It is something.

[0009] In the lighting fixture disclosed in the present application, It is preferable that the power supply unit is disposed on a surface of the base opposite to a surface on which the light source unit is attached.

[0010] In the lighting fixture disclosed in the present application, The base has a wall portion on a side surface, The wall portion preferably has a shape in which the power supply unit can be disposed.

[0012] In the lighting fixture disclosed in the present application, The frame preferably has a sensor unit holding portion capable of housing and holding a part of the sensor unit. Effect of the Invention

[0013] According to the present invention, it is possible to provide a lighting fixture including a sensor unit that is easy to assemble. [Brief description of the drawings]

[0014] [Figure 1] 1 is a perspective view of a lighting fixture according to an embodiment of the present invention, viewed obliquely from below. [Diagram 2] FIG. 2 is a perspective view of the lighting fixture as viewed obliquely from above. [Diagram 3] FIG. [Figure 4] 4 is a cross-sectional view taken along line AA in FIG. 3. [Diagram 5] FIG. [Figure 6] FIG. [Figure 7] 5A and 5B are diagrams showing an elastic member, in which (A) is a perspective view seen from diagonally above, and (B) is an enlarged cross-sectional view of the elastic member attached to a substrate. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] A lighting fixture 11 according to an embodiment of the present invention will be described with reference to Figs. 1 to 7. The lighting fixture 11 according to this embodiment is a downlight equipped with a sensor unit 71. The downlight is embedded in a mounting surface such as a ceiling, which is a mounting portion. In the following description, the side of the lighting fixture 11 that emits light is referred to as the illumination direction side of the lighting fixture 11, and the side of the lighting fixture 11 that faces the mounting portion is referred to as the mounting surface side (opposite the illumination direction side) of the lighting fixture 11. In addition, the up-down direction of the lighting fixture 11 in Figs. 4 to 6 will be described as the up-down direction of the lighting fixture 11. A direction perpendicular to the up-down direction will be described as the side. In the following description, the lighting fixture 11 viewed from above is referred to as a planar view. The lighting fixture 11 viewed from a direction perpendicular to the up-down direction is referred to as a side view. The cross-sectional shape of the lighting fixture 11 is referred to as a cross-sectional view.

[0016] The downlight described in this embodiment is an example of a lighting fixture according to the present invention. The type of lighting fixture is not limited to that described in this embodiment, and may be, for example, a ceiling light (a light directly attached to the ceiling), a bracket light (a light directly attached to the wall), an indirect light, etc., in addition to the downlight. Also, the shape of the underside of the lighting fixture may be, for example, elongated or rectangular, in addition to the circular shape described in this embodiment.

[0017] As shown in FIG. 4, the lighting fixture 11 mainly includes a light source unit 21, a power supply unit 31, a base 41, a frame 51, an elastic member 61, and a sensor unit 71.

[0018] The light source unit 21 emits light. The light source unit 21 is attached to a light source attachment portion 42 on the lower surface side of a base 41. The light source unit 21 has an LED (Light Emitting Diode) 22 as a semiconductor light emitting element, and an LED holder 23. In the light source unit 21, the LED 22 is mounted on the LED holder 23. Note that the LED 22 in this embodiment is a COB (Chip On Board) type light emitting module, but may be an SMD (Surface Mount Device) type light emitting module, an organic EL element, or the like.

[0019] The power supply unit 31 supplies power to the light source unit 21. The power supply unit 31 is attached to the upper surface side of the base 41. That is, the power supply unit 31 is disposed on the surface of the base 41 opposite to the surface on which the light source unit 21 is attached. The upper side and the light source unit 21 side of the power supply unit 31 are covered by a power supply cover 32. The power supply cover 32 is formed using a material with high thermal conductivity in order to dissipate heat generated from the power supply unit 31. The heat generated from the power supply unit 31 is transferred to the power supply cover 32 and dissipated into the air.

[0020] The power supply unit 31 has electrical components (not shown) that configure a power supply circuit, a dimming circuit, etc., and a substrate (not shown) on which the electrical components are mounted. The power supply circuit includes a circuit that converts AC current obtained from an external power supply into DC current. The dimming circuit controls the amplitude or phase of the current to adjust the amount of current supplied to the LEDs 22. The power supply unit 31 switches the light source unit 21 on and off and changes the illuminance of the light source unit 21 based on a detection signal transmitted from the sensor unit 72 of the sensor unit 71.

[0021] 3, a terminal block 33 for connecting an external power source is disposed on a wall portion 44 on one side surface of the base 41, and a terminal block 34 for feeding wiring (for an interlocking device) is disposed on a wall portion 44 on the other side surface of the base 41. In this embodiment, the terminal block 34 for feeding wiring is disposed closer to the light source unit 21 than the terminal block 33 for connecting an external power source, but the terminal block 33 for connecting an external power source may be disposed closer to the light source unit 21 than the terminal block 34 for feeding wiring. In other words, the two terminal blocks 33 and 34 are disposed in asymmetric positions with respect to a center line (line AA in FIG. 3) passing through the center of the width direction of the base 41 in a plan view.

[0022] An electric wire (not shown) from an external power source is electrically connected to the terminal block 33 for connecting an external power source. The power source unit 31 is electrically connected to the external power source via the terminal block 33 and a ceiling wiring device (not shown) for the lighting fixture 11. The light source unit 21 and the power source unit 31 are electrically connected via an electric wire 35 (see FIG. 4). The power source unit 31 and the sensor unit 71 are electrically connected via an electric wire 36.

[0023] When another lighting device (not shown) whose operation is linked with that of lighting fixture 11 is provided, an electric wire (not shown) to the terminal block for the outgoing wiring provided on the other lighting device is electrically connected to terminal block for the outgoing wiring 34. Power supply unit 31 switches the lighting of light source unit 21 on and off based on a control signal transmitted from the other lighting fixture via the terminal block. Power supply unit 31 also transmits a control signal to the other lighting fixture via terminal block 34.

[0024] The base 41 is provided with the light source section 21, the power supply section 31, and the sensor unit 71. As shown in Fig. 6, the base 41 mainly includes a light source attachment section 42, a through hole 43, and a wall section 44. The base 41 is formed using a material with high thermal conductivity in order to dissipate heat generated from the light source section 21 and the power supply section 31. The base 41 can be formed by bending a sheet metal member, improving workability. The LED holder 23 (see Fig. 4) is attached to the light source attachment section 42 by an attachment member 45.

[0025] The through hole 43 is a hole that penetrates between the upper surface side and the lower surface side of the base 41. The through hole 43 is disposed adjacent to the light source mounting portion 42, and is located between the light source mounting portion 42 and the power supply portion 31 in a plan view. The through hole 43 is formed to correspond to the outer shape of the lower surface side of the sensor unit 71. The sensor unit 71 can be inserted into the through hole 43 from its upper surface side, and the sensor unit 71 is guided to a predetermined position on the base 41.

[0026] The base 41 has a notch 47 through which the electric wire 35 that electrically connects the light source unit 21 and the power source unit 31 can be inserted. The notch 47 is formed integrally with the through hole 43. In this embodiment, the notch 47 is disposed at the end 43a of the through hole 43 at a portion closest to the light source attachment portion 42, and is configured so that the electric wire 35 is disposed at the shortest distance between the power source unit 31 and the light source unit 21, making it easy to connect. The notch 47 is smaller than the through hole 43 and formed in a rectangular shape. The shape of the notch 47 may be, for example, a circular shape or a U-shape.

[0027] The base 41 has a wall portion 44 at its end. The wall portion 44 is arranged except for the periphery of the light source attachment portion 42. The wall portion 44 is erected so as to surround the side surface on the upper surface side of the sensor unit 71 and the side surface of the power supply portion 31, and has a shape that allows the power supply portion 31 to be arranged thereon. Heat generated by the light source portion 21 and the power supply portion 31 is transferred to the wall portion 44 and dissipated into the air.

[0028] Frame 51 constitutes the outer edge of lighting fixture 11 on the irradiation direction side. As shown in Fig. 5, frame 51 has opening 52, reflecting portion 53, sensor unit holding portion 54, and flange portion 55. When lighting fixture 11 is installed on a ceiling or the like, frame 51 comes into contact with the mounting surface via elastic member (packing) 81. Elastic member 81 is attached along flange portion 55.

[0029] The opening 52 is for irradiating the light from the light source unit 21. The opening 52 is disposed on the irradiation direction side of the light source unit 21. The opening 52 is formed in a circular shape. The opening 52 is provided with a panel 24 that reflects and diffuses the light from the light source unit 21 and distributes the light to the outside so as to cover the irradiation direction side of the light source unit 21 (see FIG. 4). The panel 24 has a circular shape in a plan view, and is formed in a dome shape that protrudes downward on the irradiation direction side. The panel 24 has a cylindrical peripheral wall portion 24a. The peripheral wall portion 24a has a notch 24a1 for inserting the electric wire 35. The notch 24a1 is provided at a position corresponding to the notch 47 of the through hole 43. The panel 24 can be placed on the upper side of the opening 52 via an elastic member (packing) 82. The shapes of the opening 52 and the panel 24 may be polygonal, such as a rectangle. Furthermore, the shape of the panel 24 may be an upwardly protruding shape, a flat shape, or the like.

[0030] The reflecting portion 53 reflects the light irradiated from the opening 52. The reflecting portion 53 is disposed on the irradiation direction side of the opening 52. The reflecting portion 53 is formed in a shape that gradually widens from the opening 52 toward the irradiation direction side.

[0031] The sensor unit holding portion 54 is capable of housing and holding a part of the sensor unit 71. As shown in Figs. 5 and 6, the sensor unit holding portion 54 has an insertion opening 56, a side wall portion 57, and a sensor arrangement surface 59. The insertion opening 56 is formed to correspond to the outer shape of the lower surface side of the sensor unit 71. The side wall portion 57 is erected so as to surround the side surface of the sensor unit 71. The sensor arrangement surface 59 is formed so as to close the lower side of the side wall portion 57 and expose the sensor portion 72. The sensor unit 71 is inserted from the insertion opening 56 and housed in the space surrounded by the side wall portion 57.

[0032] The elastic member 61 can be attached to the base 41 by sandwiching the upper and lower ends 43a of the through hole 43. The elastic member 61 is arranged around the entire circumference of the end 43a of the through hole 43. The elastic member 61 is formed to correspond to the shape of the end 43a of the through hole 43. The elastic member 61 is formed in an arched shape, and a groove 62 for inserting the end 43a of the through hole 43 is provided around the outer periphery of the elastic member 61 (see FIG. 7(A)). This allows the elastic member 61 to be attached to the end 43a of the through hole 43 at an appropriate position, and the elastic member 61 is unlikely to shift or fall off during assembly work. The elastic member 61 is a so-called packing, and is interposed between one end of the sensor unit 71 and the base 41, and between the base 41 and the frame 51. The elastic member 61 can prevent insects and the like from entering the space surrounded by the power supply cover 32 and the base 41. The elastic member 61 has a protrusion 63 provided at a portion overlapping the notch 47 and through holes 65 provided at both ends in the longitudinal direction. The protrusion 63 is provided with a wiring hole 64. The elastic member 61 is configured so that the protrusion 63 closes the upper side of the notch 47 and the electric wire 35 can be inserted into the wiring hole 64. By inserting the electric wire 35 into the wiring hole 64, the position of the electric wire 35 is restricted and the electric wire 35 is prevented from moving toward the through hole 43 side through which the sensor unit 71 is inserted. This improves the ease of assembly and prevents the electric wire 35 from directly contacting the end of the through hole 43 and the notch 47. The mounting member 46 is inserted into the through hole 65. In this embodiment, the elastic member 61 is attached around the entire end 43a of the through hole 43, but it may also be attached to a portion of the end 43a of the through hole 43 (for example, both longitudinal ends of the through hole 43).

[0033] The sensor unit 71 is, for example, a human presence sensor that detects the presence of a human being. The sensor unit 71 is housed in the sensor unit holding portion 54 as described above. The sensor unit 71 has a sensor portion 72 and a unit case 73. The sensor unit 71 is attached to the frame 51 together with the base 41 via the elastic member 61 by the attachment member 46. Through holes 77 provided at both ends of the flange 74 of the sensor unit 71 correspond to the through holes 48 of the base 41, the screw holes 51a of the frame 51, and the through holes 65 of the elastic member 61. The attachment member 46 can be inserted through the through holes 77 of the sensor unit 71, the through holes 65 of the elastic member 61, and the through holes 48 of the base 41, and screwed into the screw holes 51a of the frame 51.

[0034] 5, the sensor unit 72 is disposed on the irradiation direction side of the light source unit 21, and is provided so as to protrude from the lower surface side of the unit case 73. The sensor unit 72 is a human presence sensor that detects a change in the amount of heat rays (infrared rays) emitted from a person or the like. The sensor unit 72 is provided with a group of lenses that mainly introduces heat rays emitted from a person or the like. The sensor unit 72 may be, for example, an ultrasonic sensor, a radio wave sensor, or the like.

[0035] The unit case 73 houses a circuit and the like that constitute the human sensor. The unit case 73 is a hollow container with the upper and lower sides closed, and a flange 74 is formed around the periphery of the unit case 73 on the upper side. The flange 74 has substantially the same shape as the elastic member 61 in a plan view. The unit case 73 is provided with an operation unit that is adjacent to the sensor unit 72 and is composed of a switch 75, a dial 76, and the like. The operation unit is for setting the sensor, such as, for example, the illumination setting and the operation setting. The operation unit is exposed from the sensor arrangement surface 59, and the user can set the sensor after mounting the lighting fixture 11 on the mounting surface. The operation unit may be, for example, a button or the like.

[0036] The mounting spring parts 91 are for fixing the lighting fixture 11 to a mounting surface such as a ceiling. As shown in Fig. 3, the mounting spring parts 91 are fixed to the mounting spring fixing parts 58 on the upper side of the frame 51 so as to face each other across the light source part 21 in a plan view. The mounting spring parts 91 are formed by bending a metal plate made of stainless steel or the like. The shape, mounting position, number, etc. of the mounting spring parts 91 are not limited.

[0037] The lighting fixture 11 according to the present embodiment described above includes the light source unit 21, the power supply unit 31 that supplies power to the light source unit 21, the base 41 having the light source mounting unit 42 to which the light source unit 21 is attached, the frame 51 having the opening 52 through which the light from the light source unit 21 is irradiated, and the sensor unit 71 in which the sensor unit 72 is arranged on the irradiation direction side of the light source unit 21. The base 41 has a through hole 43 adjacent to the light source mounting unit 42. The sensor unit 71 is attached to the frame 51 together with the base 41 by the mounting member 46, with a part of the sensor unit 71 inserted into the through hole 43. As a result, by using the base 41, the light source unit 21 and the sensor unit 71 can be easily arranged and attached at a predetermined position relative to the frame 51, thereby improving the assembly of the lighting fixture 11. In addition, by fastening the base 41 and the sensor unit 71 together, the number of mounting members 46 such as screws can be reduced. Furthermore, since the sensor unit 71 is attached so as to penetrate the base 41, even if the sensor unit 71 receives an impact from the side, the sensor unit 71 is unlikely to become displaced or fall off.

[0038] In addition, in the lighting fixture 11 according to this embodiment, the power supply unit 31 is disposed on the side of the base 41 opposite to the side on which the light source unit 21 is attached. This allows the light source unit 21, the sensor unit 71, and the power supply unit 31 to be disposed on the base 41. This makes it easier to connect the electric wire 35 that connects the light source unit 21 and the power supply unit 31, and the electric wire 36 that connects the sensor unit 71 and the power supply unit 31. In addition, the lengths of the electric wires 35 and 36 can be set short. In addition, by storing the electric wires 35 and 36 in the space formed by the base 41 and the power supply cover 32, the electric wires 35 and 36 can be prevented from being exposed to the outside of the lighting fixture 11.

[0039] In addition, in lighting fixture 11 according to this embodiment, base 41 has wall portion 44 on its side, and wall portion 44 has a shape that allows power supply unit 31 to be disposed thereon. This increases the rigidity of base 41 and improves heat dissipation. In addition, since power supply unit 31 can be disposed easily, the assembly of lighting fixture 11 can be improved.

[0040] Moreover, in lighting fixture 11 according to this embodiment, base 41 has cutout 47 through which electric wire 35 that electrically connects light source unit 21 and power supply unit 31 can be inserted, and cutout 47 is formed integrally with through hole 43. This improves workability because, when electric wire 35 on the light source unit 21 side is drawn out to the opposite surface side of base 41, electric wire 35 can be moved and inserted into cutout 47 after being inserted into through hole 43. Moreover, since a cutout or the like through which electric wire 35 on the light source unit 21 side is drawn out is not provided in a place other than through hole 43, it is possible to prevent base 41 from becoming large.

[0041] Furthermore, in lighting fixture 11 according to this embodiment, frame 51 has sensor unit holding portion 54 capable of housing and holding part of sensor unit 71. As a result, the side surface of sensor unit 71 is not exposed, and therefore when lighting fixture 11 is attached to an attachment surface such as a ceiling, sensor unit 71 does not come into direct contact with the attachment surface, thereby reducing impact to sensor unit 71.

[0042] Furthermore, lighting fixture 11 according to this embodiment has elastic member 61 that can be attached to base 41 by sandwiching end 43a of through hole 43. As a result, the position of the packing, which is elastic member 61, is fixed by sandwiching end 43a of through hole 43, so that it is less likely to become displaced or fall off when assembling lighting fixture 11. Furthermore, it is possible to improve the airtightness between sensor unit 71 and base 41, and between base 41 and frame 51.

[0043] Furthermore, lighting fixture 11 according to this embodiment includes terminal block 33 for connecting to an external power source and terminal block 34 for feeding wiring, and the two terminal blocks 33 and 34 are disposed in asymmetric positions with respect to base 41 in a plan view. This allows the user to distinguish the uses of the two terminal blocks 33 and 34, and prevents incorrect connection of wiring to each of the terminal blocks 33 and 34.

[0044] The embodiments of the present invention have been described above with reference to the drawings (FIGS. 1 to 7). However, the present invention is not limited to the above-mentioned embodiments, and can be implemented in various forms without departing from the spirit of the present invention. Furthermore, the shapes and the like shown in the above-mentioned embodiments are merely examples and are not particularly limited, and various modifications are possible without substantially departing from the effects of the present invention. [Explanation of symbols]

[0045] 11 Lighting equipment 21 Light source section 31 Power supply section 33 Terminal block 34 Terminal block 35 Electric wire 41 Foundation 42 Light source attachment part 43 Through hole 43a end 44 Wall 46 Mounting parts 47 Cutout 51 slots 52 Opening 54 Sensor unit holder 61 Elastic member 71 Sensor unit 72 Sensor section

Claims

1. A light source unit; A power supply unit that supplies power to the light source unit; a base having a light source mounting portion to which the light source unit is attached; a frame having an opening through which light from the light source unit is irradiated; a sensor unit in which a sensor unit is disposed on the irradiation direction side of the light source unit; A lighting fixture comprising: The base has a through hole adjacent to the light source attachment portion, a part of the sensor unit is inserted into the through hole, and the sensor unit is attached to the frame together with the base by an attachment member; the base has a notch through which an electric wire that electrically connects the light source unit and the power supply unit can be inserted, A lighting device, wherein the cutout is formed integrally with the through hole.

2. The lighting device according to claim 1 , wherein the power supply unit is disposed on a surface of the base opposite to a surface on which the light source unit is attached.

3. The base has a wall portion on a side surface, The lighting device according to claim 1 , wherein the wall portion has a shape on which the power supply unit can be disposed.

4. The lighting device according to claim 1 , wherein the frame has a sensor unit holding portion capable of housing and holding a part of the sensor unit.

5. The lighting fixture according to claim 1 , further comprising an elastic member that can be attached to the base by sandwiching an end of the through hole.

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