lighting equipment

Abstract

To provide a lighting device capable of adjusting a detection range of a detection part.SOLUTION: A lighting device 1 includes a detection part 11, an attachment part, an optical element 90, and an adjustment mechanism 70. The detection part 11 detects electromagnetic waves. The attachment part is attached to an installation part 111. The optical element 90 guides electromagnetic waves to the detection part 11. The adjustment mechanism 70 adjusts a position of the optical element 90 relative to the installation part 111. It is preferable that the lighting device 1 further include a housing 20 which covers the detection part 11. It is preferable that the attachment part be disposed in the housing 20.SELECTED DRAWING: Figure 3

Description

[Technical Field]

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

[0002] Conventionally, lighting fixtures equipped with a motion sensor have been known (see, for example, Patent Document 1). Patent Document 1 discloses a lighting fixture equipped with a socket for mounting a substantially straight tubular lamp and a sensor for lighting control located below the socket.

[0003] The lighting fixture described in Patent Document 1 turns on the approximately straight tubular lamp when the sensor detects a person, and turns off the approximately straight tubular lamp when no person is detected for a predetermined period of time. This prevents forgetting to turn off the lamp and also reduces power consumption. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-291418 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the lighting fixture described in Patent Document 1, the detection range in which a detection unit such as a sensor detects a person is fixed. In other words, the detection range of the detection unit cannot be changed.

[0006] The present invention has been made in view of the above-mentioned problems, and has an object to provide an illumination device in which the detection range of a detection unit can be adjusted. [Means for solving the problem]

[0007] The lighting device according to the present invention includes a detection unit, an attachment unit, an optical element, and an adjustment mechanism. The detection unit detects electromagnetic waves. The attachment unit is attached to an installation unit. The optical element guides the electromagnetic waves to the detection unit. The adjustment mechanism adjusts the position of the optical element relative to the installation unit.

[0008] It is preferable that the lighting device according to the present invention further comprises a housing that covers the detection unit, the mounting unit is disposed on the housing, and the adjustment mechanism adjusts the position of the optical element relative to the housing.

[0009] In the lighting device according to the present invention, it is preferable that the adjustment mechanism is disposed on a predetermined direction side of the detection unit, and the adjustment mechanism changes the position of the optical element relative to the housing along the predetermined direction.

[0010] In the lighting device according to the present invention, the adjustment mechanism is preferably a screw mechanism. [Effects of the Invention]

[0011] According to the lighting device of the present invention, the detection range of the detection unit can be adjusted. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a perspective view showing an illumination device according to a first embodiment of the present invention. [Figure 2] 1 is a perspective view showing an illumination device according to a first embodiment. [Figure 3] 1 is a cross-sectional view showing an illumination device according to a first embodiment. [Figure 4] FIG. 1 is an exploded perspective view showing a lighting fixture body according to a first embodiment. [Figure 5] 3 is a diagram showing an example of the arrangement of a plurality of LEDs and a detection unit of the lighting device according to the first embodiment. FIG. [Figure 6] FIG. 1 is a perspective view showing an optical element according to a first embodiment. [Figure 7] 1 is a cross-sectional view showing an illumination device according to a first embodiment. [Figure 8] 1 is a block diagram showing an illumination device according to a first embodiment. [Figure 9] FIG. 10 is a perspective view showing an illumination device according to a second embodiment of the present invention. [Figure 10] FIG. 10 is a perspective view showing an optical element according to a third embodiment of the present invention. [Figure 11] FIG. 10 is a cross-sectional view showing an illumination device according to a third embodiment. [Figure 12] FIG. 10 is a cross-sectional view showing an illumination device according to a third embodiment. [Figure 13] FIG. 10 is a cross-sectional view showing an illumination device according to a third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference numerals, and description thereof will not be repeated. In the embodiment of the present invention, the X-axis, Y-axis, and Z-axis are mutually orthogonal, the X-axis and Y-axis are parallel to a horizontal plane, and the Z-axis is parallel to a vertical line.

[0014] <Embodiment 1> An illumination device 1 according to a first embodiment of the present invention will be described with reference to Fig. 1 to Fig. 3. Figs. 1 and 2 are perspective views showing the illumination device 1 according to the first embodiment. Fig. 3 is a cross-sectional view showing the illumination device 1 according to the first embodiment. Specifically, Fig. 1 is a perspective view showing the illumination device 1 as viewed from the infrared ray incident side. Fig. 2 is a perspective view showing the illumination device 1 as viewed from the opposite side to the infrared ray incident side.

[0015] As shown in FIGS. 1 to 3, the lighting device 1 emits light. Specifically, the lighting device 1 emits visible light into a room (e.g., a store). The lighting device 1 also senses people. Specifically, the lighting device 1 detects infrared rays in the room (e.g., a store). Infrared rays are an example of "electromagnetic waves." In the first embodiment, the infrared incident side refers to the side where infrared rays are incident, that is, the side where the lighting device 1 receives infrared rays, relative to the lighting device 1.

[0016] The room has a ceiling 111, multiple walls, a floor, and a lighting fixture body G. The ceiling 111 may be a horizontal surface or an inclined surface. At least one of the multiple walls is provided with a door. People (e.g., customers or store clerks) enter and exit the room by opening and closing the door.

[0017] The lighting fixture body G is disposed on the ceiling 111. The lighting fixture body G may be embedded in the ceiling 111 or may be suspended from the ceiling 111 by an arm, a wire, or the like. The ceiling 111 is an example of an "installation part." The installation part is not limited to a ceiling, but may be a wall, a floor, a duct rail, or any other place where at least the lighting fixture body G can be installed.

[0018] The lighting fixture body G is substantially cylindrical. The lighting fixture body G opens in a first direction PD1. The first direction PD1 is an example of a "predetermined direction." The first direction PD1 is a direction perpendicular to the ceiling 111. The first direction PD1 extends along the Z axis.

[0019] The lighting fixture body G will now be described with reference to Figures 3 and 4. Figure 4 is an exploded perspective view showing the lighting fixture body G according to embodiment 1. As shown in Figures 3 and 4, the lighting fixture body G includes a first housing G1 and a second housing G2.

[0020] The second housing G2 includes a recess G2a and a disk portion G2b. The recess G2a is disposed in the center of the disk portion G2b. The recess G2a is recessed in the opposite direction to the first direction PD1. The second housing G2 is, for example, a socket.

[0021] The second housing G2 further includes a pair of engaging portions 101 and a pair of conductor portions 102.

[0022] The pair of engaging portions 101 are disposed in the recess G2a. Specifically, the pair of engaging portions 101 are provided on the inner circumferential surface of the recess G2a. Each of the pair of engaging portions 101 protrudes toward the center of the recess G2a. The pair of engaging portions 101 face each other.

[0023] The pair of conductors 102 are arranged on the disk portion G2b. Each of the pair of conductors 102 has a connection hole 103 and a terminal (not shown). The connection hole 103 has an elongated hole 103a and a circular hole 103b. The elongated hole 103a is substantially arc-shaped. The circular hole 103b is located at one end of the elongated hole 103a. The second cylindrical member 50b (FIG. 2) of the terminal portion 50 can be inserted into the circular hole 103b.

[0024] The pair of terminals are arranged corresponding to the pair of connection holes 103, respectively. An external power supply voltage (for example, AC (alternating current) 100V) is applied to the pair of terminals. For example, a power switch is provided on at least one of the multiple wall surfaces. The pair of terminals is connected to the power switch by an electric wire. When the power switch is in a connected state (ON state), the external power supply voltage is applied to the pair of terminals.

[0025] For example, a GX53 base or a GH76p base is adopted as the base structure of the lighting device 1. Specifically, the lighting device 1 includes a housing 20, an attachment portion 30, and a pair of terminal portions 50.

[0026] The housing 20 is shaped, for example, as a cylinder having an upper surface and a lower surface. Specifically, the housing 20 has a top plate 20a, side walls 20b, and a bottom plate 20c. The top plate 20a is disposed on the opposite side of the housing 20 in the first direction PD1. The bottom plate 20c is disposed on the first direction PD1 side of the housing 20. As a result, the top plate 20a and the bottom plate 20c face each other in the first direction PD1. The top plate 20a and the side walls 20b are made of, for example, an insulating resin material such as PBT (polybutylene terephthalate) or a metal such as aluminum.

[0027] The lower plate 20c is made of a resin material such as acrylic (PMMA) or polycarbonate (PC). The lower plate 20c may have a transparent structure that does not have light diffusion properties, or may have a diffusing structure that has light diffusion properties. For example, the lower plate 20c can be made to have a light diffusion function by forming a milky white light diffusion film by applying a resin containing a light diffusion material such as silica or calcium carbonate or a white pigment to the inner surface of the lower plate 20c, or by forming minute irregularities on the lower plate 20c.

[0028] The mounting portion 30 is integrally provided on the upper surface of the housing 20. Specifically, the mounting portion 30 is provided in the center of the top plate 22a. The mounting portion 30 has a cylindrical shape. The mounting portion 30 has a pair of recesses. Each of the pair of recesses 31 is recessed toward the inside of the mounting portion 30. Each of the pair of recesses 31 has, for example, a substantially L-shape.

[0029] Each of the pair of terminal portions 50 is disposed on the housing 20. Specifically, each of the pair of terminal portions 50 is disposed on the top plate 20a. Each of the pair of terminal portions 50 includes a first cylindrical member 50a extending along the first direction PD1 and a second cylindrical member 50b extending along the first direction PD1. The first cylindrical member 50a is disposed on the first direction PD1 side of the second cylindrical member 50b. The diameter of the second cylindrical member 50b is larger than the diameter of the first cylindrical member 50a. Each of the pair of terminal portions 50 is made of metal.

[0030] The lighting device 1 according to the first embodiment is detachable from the lighting fixture body G. Specifically, the pair of recesses 31 of the mounting portion 30 are engageable with the engaging portions 101 of the lighting fixture body G. The second cylindrical members 50b of the pair of terminal portions 50 pass through the connection holes 103 of the pair of conductor portions 102 of the lighting fixture body G and are connected to the terminals. Specifically, a user can attach the lighting device 1 to the lighting fixture body G by inserting the pair of terminal portions 50 of the lighting device 1 into the pair of conductor portions 102 and rotating the lighting device 1 in a predetermined rotational direction. In addition, a user can remove the lighting device 1 from the lighting fixture body G by rotating the lighting device 1 in the direction opposite to the predetermined rotational direction.

[0031] Next, the light-emitting unit 301 and the detection unit 11 of the lighting device 1 will be described with reference to Fig. 3 and Fig. 5. Fig. 5 is a diagram showing an example of the arrangement of a plurality of light sources and a detection unit. As shown in Fig. 3 and Fig. 5, the lighting device 1 includes a substrate 12, a light-emitting unit 301, and a detection unit 11.

[0032] The detection unit 11 detects infrared rays. For example, the detection unit 11 is a human sensor or an infrared sensor.

[0033] The light emitting unit 301 emits at least visible light. Specifically, the visible light emitted from the light emitting unit 301 passes through the lower plate 20c and is emitted to the outside of the housing 20.

[0034] The light-emitting unit 301 has a plurality of LEDs (light emitting diodes) 300. The plurality of LEDs 300 are arranged, for example, on the substrate 12 around the detection unit 11. Although the LEDs 300 are exemplified as the light-emitting elements in the first embodiment, other solid-state light-emitting elements such as semiconductor light-emitting elements such as semiconductor lasers, or EL elements such as organic EL (Electro Luminescence) elements and inorganic EL elements may also be used.

[0035] Next, a description will be given of the optical element 90 of the lighting device 1. The lighting device 1 further includes the optical element 90.

[0036] The optical element 90 guides the infrared light to the detection unit 11. The optical element 90 is made of a resin material such as acrylic (PMMA) or polycarbonate (PC).

[0037] The optical element 90 has an incident surface and an exit surface. Specifically, infrared light is incident on the incident surface of the optical element 90 from a predetermined area in the room. The predetermined area has, for example, a substantially conical shape. The infrared light is emitted from the exit surface of the optical element 90 toward the detection unit 11.

[0038] The lighting device 1 according to the first embodiment further includes an adjustment mechanism 70. The adjustment mechanism 70 adjusts the position of the optical element 90 relative to the ceiling 111. In other words, the adjustment mechanism 70 adjusts the position of the optical element 90 relative to the room. As a result, a predetermined area in the room changes. For example, when the position of the optical element 90 is adjusted to a first position, infrared rays are incident on the incident surface of the optical element 90 from a first area in the room. On the other hand, when the position of the optical element 90 is adjusted to a second position, infrared rays are incident on the incident surface of the optical element 90 from a second area in the room. The size of the first area is different from the size of the second area.

[0039] 1 to 5, the adjustment mechanism 70 adjusts the position of the optical element 90 relative to the ceiling 111. As a result, the user can adjust the detection range of the detection unit 11 by adjusting the position of the optical element 90 with the adjustment mechanism 70. For example, the user can select whether the detection range is a first area or a second area in the room.

[0040] Next, the optical element 90 and the adjustment mechanism 70 will be described in detail with reference to Figures 3, 6, and 7. Figure 6 is a perspective view showing the optical element 90 according to the first embodiment. Figure 7 is a cross-sectional view showing the lighting device 1 according to the first embodiment.

[0041] 3, 6, and 7, the optical element 90 has a substantially annular portion 93, a substantially cylindrical portion 91, and a substantially hemispherical portion 92. The substantially annular portion 93 is disposed on the opposite side of the substantially cylindrical portion 91 in the first direction PD1. The substantially hemispherical portion 92 is disposed on the first direction PD1 side of the substantially cylindrical portion 91. For example, the substantially hemispherical portion 92 is a condenser lens or a Fresnel lens.

[0042] A screw mechanism 71 is disposed on the outer peripheral surface of the substantially cylindrical portion 91. The screw mechanism 71 is an example of the "adjustment mechanism 70."

[0043] The lower plate 20c of the housing 20 has an opening. Specifically, the center of the lower plate 20c has a circular opening. A screw mechanism 72 is disposed on the inner circumferential surface of the opening. The screw mechanism 72 is an example of the "adjustment mechanism 70."

[0044] The adjustment mechanism 70 adjusts the position of the optical element 90 relative to the housing 20. Specifically, the adjustment mechanism 70 changes the position of the optical element 90 relative to the housing 20 along the first direction PD1. In more detail, a user can move the optical element 90 in the first direction PD1 by gripping the approximately cylindrical portion 91 with their fingers and rotating the optical element 90 in a predetermined rotation direction. Furthermore, a user can move the optical element 90 in the opposite direction of the first direction PD1 by gripping the approximately cylindrical portion 91 with their fingers and rotating the optical element 90 in the direction opposite to the predetermined rotation direction.

[0045] As described above with reference to FIGS. 1 to 7 , the adjustment mechanism 70 changes the position of the optical element 90 relative to the housing 20 along the first direction PD1. As a result, the user can easily adjust the detection range of the detection unit 11. Furthermore, the adjustment mechanism 70 is made up of the screw mechanism 71 and the screw mechanism 72. As a result, the user can easily adjust the position of the optical element 90.

[0046] Next, the control device 60 that controls the driving of the detection unit 11 will be described in detail. Fig. 8 is a block diagram showing the lighting device 1 according to the first embodiment. As shown in Fig. 8, the lighting device 1 further includes the control device 60 and a power supply device 61. The power supply device 61 supplies power to the LEDs 300. The power supply device 61 has, for example, electronic components (not shown) that constitute a power supply circuit, and a substrate (not shown) on which the electronic components are mounted. The power supply circuit includes a circuit that converts an AC voltage obtained from an AC power supply AC into a DC voltage.

[0047] The control device 60 receives the detection result of the detection unit 11. Specifically, when the intensity of the infrared rays is equal to or greater than the threshold, the control device 60 determines that a person is present in the predetermined area. On the other hand, when the intensity of the infrared rays is less than the threshold, the control device 60 determines that a person is not present in the predetermined area. The control device 60 controls the operation of the LED 300 based on the detection result of the detection unit 11.

[0048] <Embodiment 2> An illumination device 2 according to a second embodiment of the present invention will be described with reference to Fig. 9. Fig. 9 is a perspective view showing the illumination device 2 according to the second embodiment. Specifically, Fig. 9 is a perspective view showing the illumination device 2 as viewed from the infrared entrance side. In the illumination device 1 according to the first embodiment, a user moves the optical element 90 along the first direction PD1 by gripping the approximately cylindrical portion 91 with their fingers and rotating the optical element 90, whereas in the illumination device 2 according to the second embodiment, a user moves the optical element 190 along the first direction PD1 by rotating the optical element 190 with a screwdriver.

[0049] The lower plate 20c of the housing 20 has an opening. Specifically, the center of the lower plate 20c has a circular opening. A screw mechanism is disposed on the inner circumferential surface of the opening.

[0050] As shown in FIG. 9, optical element 190 has a substantially annular portion, a substantially cylindrical portion, and a substantially hemispherical portion 192. The substantially annular portion is disposed on the opposite side of the substantially cylindrical portion in the first direction PD1. The substantially hemispherical portion 192 is disposed on the first direction PD1 side of the substantially cylindrical portion. For example, the substantially hemispherical portion 192 is a condenser lens or a Fresnel lens. Note that the substantially annular portion and the substantially cylindrical portion of optical element 190 have the same configuration as the substantially annular portion 93 and the substantially cylindrical portion 91 shown in FIG. 9, and therefore detailed description thereof will be omitted.

[0051] A cross-shaped hole 192a is formed in the center of the approximately hemispherical portion 192. A screw mechanism is arranged on the outer circumferential surface of the approximately cylindrical portion 91.

[0052] The adjustment mechanism changes the position of optical element 190 relative to housing 20 along first direction PD1. In particular, a user can move optical element 190 in first direction PD1 by inserting a screwdriver into hole 192a and rotating optical element 190 in a predetermined rotational direction. Alternatively, a user can move optical element 190 in the direction opposite to first direction PD1 by inserting a screwdriver into hole 192a and rotating optical element 190 in the direction opposite to the predetermined rotational direction.

[0053] <Embodiment 3> An illumination device 3 according to a third embodiment of the present invention will be described with reference to Fig. 10. Fig. 10 is a perspective view showing an optical element 290 according to the third embodiment. Figs. 11 to 13 are cross-sectional views showing the illumination device 3 according to the third embodiment. For ease of explanation, the cross section of the lower plate 20c and the optical element 290 shown in Fig. 11 is cut along an imaginary line passing through the slit 272. Furthermore, the cross sections of the lower plate 20c and the optical element 290 shown in Figs. 12 and 13 are cut along an imaginary line that does not pass through the slit 272. In the illumination device 1 according to the first embodiment, the screw mechanism 70 is disposed on the outer peripheral surface of the cylindrical portion 91 and the inner peripheral surface of the opening, whereas protrusions 291a and 291b are disposed on the outer peripheral surface of the cylindrical portion 291 and the slit 272 is disposed on the inner peripheral surface of the opening.

[0054] 10 to 13, optical element 290 has a substantially annular portion 293, a substantially cylindrical portion 291, and a substantially hemispherical portion 292. The substantially annular portion 293 is disposed on the opposite side of the substantially cylindrical portion 291 in the first direction PD1. The substantially hemispherical portion 292 is disposed on the first direction PD1 side of the substantially cylindrical portion 291. For example, the substantially hemispherical portion 292 is a condenser lens or a Fresnel lens.

[0055] A pair of protrusions 291a and a pair of protrusions 291b are arranged on the outer circumferential surface of the approximately cylindrical portion 291. The pair of protrusions 291a and the pair of protrusions 291b are an example of the "adjustment mechanism 270." The pair of protrusions 291b are arranged on the first direction PD1 side of the pair of protrusions 291a.

[0056] The lower plate 20c of the housing 20 has an opening. Specifically, the center of the lower plate 20c has a circular opening. As shown in FIG. 11, a pair of slits 272 are arranged on the inner circumferential surface of the opening. The pair of slits 272 is an example of the "adjustment mechanism 270." Each of the pair of slits 272 extends along the first direction PD1.

[0057] The adjustment mechanism 270 adjusts the position of the optical element 290 relative to the housing 20. Specifically, the adjustment mechanism 270 changes the position of the optical element 290 relative to the housing 20 along the first direction PD1. In more detail, a user can move the optical element 290 along the first direction PD1 by gripping the approximately cylindrical portion 291 with their fingers and passing the pair of protrusions 291a and the pair of protrusions 291b through the pair of slits 272. FIG. 11 shows a state in which the pair of protrusions 291a and the pair of protrusions 291b are positioned within the pair of slits 272. Then, as shown in FIGS. 12 and 13, a user can place the optical element 290 in a predetermined position relative to the housing 20 by gripping the approximately cylindrical portion 291 with their fingers and rotating the optical element 290 by 90 degrees.

[0058] As a result, the predetermined area in the room changes. As shown in Fig. 12, when the position of optical element 290 is adjusted to the third position, infrared rays are incident on the incident surface of optical element 290 from a third area in the room. Also, as shown in Fig. 13, when the position of optical element 290 is adjusted to the fourth position, infrared rays are incident on the incident surface of optical element 290 from a fourth area in the room. The size of the third area is different from the size of the fourth area.

[0059] The embodiments of the present invention have been described above with reference to the drawings. However, the present invention is not limited to the above embodiments and can be embodied in various forms without departing from the spirit and scope of the present invention. Furthermore, various inventions can be formed by appropriately combining multiple components disclosed in the above embodiments. For example, some components may be omitted from all components shown in the embodiments. Furthermore, components from different embodiments may be appropriately combined. The drawings mainly show each component in a schematic manner to facilitate understanding. The thickness, length, number, spacing, etc. of each component shown in the drawings may differ from the actual ones due to the convenience of drawing. Furthermore, the speed, material, shape, dimensions, etc. of each component shown in the above embodiments are merely examples and are not particularly limited. Various modifications are possible within a scope that does not substantially deviate from the configuration of the present invention.

[0060] (1) Although the lighting devices according to the first to third embodiments detect infrared rays in a room (for example, a store), this is not limiting. The lighting devices may also detect the amount of light in a room (for example, a store).

[0061] (2) In the lighting devices according to the first to third embodiments, the adjustment mechanism 70 adjusts the position of the optical element 90 relative to the housing 20, but this is not limited to this. The adjustment mechanism may adjust the position of the optical element relative to the ceiling, or may adjust the position of the lighting device relative to the ceiling.

[0062] (3) Although the lighting devices according to the first to third embodiments are substantially cylindrical, the lighting devices are not limited to this. They may be rectangular parallelepipeds or polygonal prisms. [Industrial Applicability]

[0063] The present invention provides a lighting device and has industrial applicability. [Explanation of symbols]

[0064] 1: Lighting equipment 11: Detection unit 20: Housing 30: Mounting part 70:Adjustment mechanism 90: Optical elements 111: Ceiling

Claims

1. a detection unit that detects electromagnetic waves; a light emitting unit that emits visible light; a housing in which the detection unit and the light emitting unit are disposed; a mounting portion to be attached to the installation portion, the mounting portion being disposed on a top plate of the housing; an optical element that guides the electromagnetic wave to the detection unit; an adjustment mechanism for adjusting the position of the optical element relative to the installation section and the housing; Equipped with the optical element has a substantially hemispherical portion and a substantially cylindrical portion having a first thread formed on an outer circumferential surface thereof, The lower plate of the housing is configured to transmit visible light emitted by the light emitting unit and emit it to the outside, a circular opening into which the substantially cylindrical portion is inserted and which has a second thread formed on an inner peripheral surface thereof is provided in the lower plate of the housing; The first screw and the second screw are threadedly engaged with each other to form the adjustment mechanism.

2. the adjustment mechanism is disposed on a predetermined side of the detection unit, The lighting device according to claim 1 , wherein the adjustment mechanism changes a position of the optical element relative to the housing along the predetermined direction.

3. A lighting device as described in claim 1 or claim 2, wherein the approximately hemispherical portion forms a lens.

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