JP7421168B2 - lighting equipment - Google Patents

Description

Embodiments of the present invention relate to a lighting device capable of wireless communication.

Conventionally, lighting devices having a wireless communication function are known. In this lighting device, a wireless unit is arranged between a fixture body and a light source unit attached to the fixture body.

However, if the appliance body is made of metal and the light source unit also uses a metal chassis, there is a concern that wireless communication performance may deteriorate.

Japanese Patent Application Publication No. 2017-111866

The problem to be solved by the present invention is to provide a lighting device that can improve wireless communication performance.

The lighting device of the embodiment includes a fixture body, a light source unit, a wireless unit, and a wireless signal passage hole. The instrument body is made of metal and has an opening, a back surface facing the opening, and a side surface to which the light source unit is attached . The light source unit includes a metal chassis and a light source board attached to the chassis, and is attached to the opening of the instrument body. The wireless unit is located in an off-center area within the instrument body. The wireless signal passage holes are provided on the back and side surfaces of the instrument body, facing the wireless unit.

According to the lighting device of the embodiment, improvement in wireless communication performance can be expected.

It is a perspective view of the lower surface side of a lighting device showing one embodiment. It is a perspective view of the upper surface side of the lighting device same as the above. It is a sectional view of the lighting device same as the above. It is a bottom view of the fixture main body of the lighting device same as the above. It is a bottom view of the light source unit of the lighting device same as the above with the transparent cover omitted.

Hereinafter, one embodiment will be described with reference to the drawings.

As shown in FIGS. 1 to 3, the lighting device 10 is a recessed lighting device installed in a recessed hole formed in a ceiling surface. In addition, the lighting device 10 controls the dimming of the lighting devices 10 individually or in preset groups, for example, when a plurality of lighting devices 10 are installed on the ceiling of a facility such as an office or a store. Compatible with lighting systems. This lighting device 10 has a wireless communication function and an optical communication function, and receives a wireless signal and an optical signal from a control terminal (transmitter) such as a remote control, and receives settings and performs dimming control.

The lighting device 10 includes a fixture main body 11 installed embedded in the ceiling surface, and a light source unit 12 detachably attached to the lower surface side of the fixture main body 11. Furthermore, the lighting device 10 includes a terminal block 13, a power supply section 14, a wireless unit 15, and an optical signal receiving unit 16, which are respectively arranged within the fixture body 11.

As shown in FIGS. 1 to 4, the instrument main body 11 is made of metal and has a rectangular box shape. The device main body 11 has a back surface portion 20 that is a top plate, a pair of side surfaces 21 that are one opposing side plate, and a pair of side surfaces 22 that is the other opposing side plate. A rectangular opening 23 is formed on the lower surface, which is the front side, of the instrument main body 11, and the light source unit 12 is arranged and attached to this opening 23.

The rear part 20 has a plurality of mounting holes 24 for attaching to hanging bolts hanging from a ceiling structure above the ceiling surface, and a wiring hole 25 for drawing a power line etc. into the appliance body 11. has been done. A terminal body 13, a power supply section 14, a wireless unit 15, and an optical signal receiving unit 16 are attached to the lower surface side, which is the inner surface side of the back section 20.

A flange portion 26 bent into a substantially L-shape is provided protruding from the lower end periphery of the side portions 21, 22. The flange portion 26 is brought into contact with the ceiling surface around the embedding hole when the instrument main body 11 is installed.

A spring receiver 27 (shown only in FIG. 3 and omitted in other figures) for attaching the light source unit 12 is attached to the inside of one pair of opposing side surfaces 21, respectively.

Further, as shown in FIGS. 1 to 3 and 5, the light source unit 12 includes a chassis 30, a light source board 31, a frame 32, a transparent cover 33, etc., and is integrated into a unit. .

The chassis 30 is made of metal and has a rectangular box shape with an open bottom side. The chassis 30 has a rectangular board mounting part 35 and a reflective surface part 36 provided so as to expand downward from the periphery of the board mounting part 35. The chassis 30 also functions as a reflector that reflects the light from the light source board 31 downward, which is a predetermined irradiation direction.

Four light source substrates 31 are used in this embodiment. The light source board 31 includes a rectangular board 38 which is the main body of the board, and a plurality of light emitting elements 39 mounted on the mounting surface which is the front side of the board 38. A wiring pattern is formed on the mounting surface of the substrate 38, and a plurality of light emitting elements 39 are mounted on this wiring pattern. For example, a surface-mounted LED is used as the light emitting element 39, but other elements such as an organic EL may also be used. The four light source boards 31 are mounted so that the back side of the board 38 is diagonally arranged on the lower surface side of the board mounting portion 35 of the chassis 30 and is in contact with the chassis 30 with a plurality of screws. A gap is provided between the four light source substrates 31, and a gap is also provided between the mutually opposing corners of the four light source substrates 31 corresponding to the center of the board mounting portion 35 of the chassis 30.

The frame body 32 is made of metal and is formed into a rectangular frame shape with an opening at the center. The frame body 32 is attached around the reflective surface section 36 of the chassis 30. When the lighting device 10 is installed, the frame 32 covers the flange portion 26 of the fixture body 11 and comes into contact with the ceiling surface.

Attachment members 41 are attached to one pair of opposing sides of the frame 32, respectively. Attached to this attachment member 41 is an attachment spring 42 that is attached to the spring receiver 27 of the instrument body 11. The mounting spring 42 has a middle portion wound in a coil shape, both ends protruding long, and the coiled portion is attached to the mounting member 41. Both ends of the mounting spring 42 have a spring force in the direction of opening each other, and by resisting this spring force, narrowing both ends of the mounting spring 42 and hooking it on the spring holder 27, both ends of the mounting spring 42 tend to expand. The light source unit 12 is configured to be pulled up and attached to the appliance main body 11 by a spring force.

The light-transmitting cover 33 is formed into a rectangular plate shape from resin or glass having light-transmitting and diffusive properties. The light-transmitting cover 33 is attached to the frame 32 and closes the central opening of the frame 32.

Further, the terminal block 13 is attached to the lower surface side of the back section 20 of the device main body 11. A power line drawn into the device main body 11 from the wiring hole 25 is connected to the terminal block 13. The terminal block 13 is electrically connected to the power input section of the power supply unit 14 by internal wiring, and sends external power supplied through the power line to the power supply unit 14.

Further, the power supply unit 14 converts external power such as AC power from a commercial AC power source into predetermined lighting power, which is DC power for lighting the light emitting element 39, and outputs it to the light source board 31. The power supply unit 14 is communicably connected to the wireless unit 15 via a communication cable, and inputs a received signal from an optical signal receiving unit 16 connected to the wireless unit 15 via the communication cable via the wireless unit 15. Possibly connected. The power supply section 14 receives signals from the wireless unit 15 or the optical signal receiving unit 16, stores settings, and controls lighting, turning off, and dimming.

Furthermore, the wireless unit 15 transmits and receives wireless signals using radio waves as a medium. The wireless unit 15 includes a case 45, a communication circuit 46, and an antenna 47 arranged inside the case 45. The case 45 is made of resin, for example, and allows wireless signals to pass therethrough. The communication circuit 46 transmits and receives wireless signals, communicates with the power supply unit 14, and sends a received signal input from the optical signal receiving unit 16 to the power supply unit 14. Antenna 47 is connected to communication circuit 46 and inputs and outputs wireless signals. Antenna 47 is arranged on one end side of case 45 along one end thereof.

The wireless unit 15 is provided in an off-center area within the instrument body 11. The wireless unit 15 is attached by screws or the like near the corner where one side surface 21 and one side surface 22 intersect on the lower surface side of the back surface 20 of the instrument main body 11. The wireless unit 15 is disposed facing the back surface 20 and one side surface 21 such that the longitudinal direction of the antenna 47 is along the back surface 20 and one side surface 21.

Radio signal passage holes 49 and 50 through which radio signals pass are provided in the back surface 20 and one side surface 21 of the instrument body 11, respectively, at positions facing the antenna 47 of the radio unit 15. Note that the wireless signal passage hole 49 in the back surface part 20 is a first wireless signal passage hole, and the wireless signal passage hole 50 in the side surface part 21 is a second wireless signal passage hole. The wireless signal passage hole 50 of the side surface portion 21 is provided at the same height as the antenna 47 of the wireless unit 15 from the rear surface portion 20.

Further, on the board mounting portion 35 of the chassis 30 of the light source unit 12, at a position opposite to the antenna 47 of the wireless unit 15, and at a position opposite to the wireless signal passage hole 49 of the back portion 20 of the appliance main body 11, A light source side wireless signal passage hole 51, which is a third wireless signal passage hole through which a wireless signal passes, is provided.

These radio signal passage holes 49, 50, and 51 are elongated slit-shaped openings along the longitudinal direction of the antenna 47, and are provided with a length and width suitable for passage of radio signals using radio waves as a medium. The wireless signal passing holes 49, 50, 51 are provided at 1/4 wavelength of the wireless signal or an integral multiple thereof. For example, when the frequency of the wireless signal is 920 MHz, the length of the wireless signal passing holes 49, 50, 51 is The length is 82 mm or more, and the width is approximately 12 mm.

Further, the optical signal receiving unit 16 receives an optical signal using light such as infrared rays as a medium. The optical signal receiving unit 16 is arranged at the center of the back section 20 of the instrument main body 11. The optical signal receiving unit 16 includes an optical signal receiving unit main body 54 and a mounting member 55 to which the optical signal receiving unit main body 54 is attached. The optical signal receiving unit main body 54 includes an optical signal receiving section 56 having a light receiving element that receives an optical signal, and a light receiving circuit that processes the signal received by the optical signal receiving section 56. The mounting member 55 has a front face portion 57 facing the light source unit 12 and a mounting portion 58 that is attached to the back face portion 20 of the instrument body 11. An optical signal receiving unit main body 54 is provided on the upper surface side, which is the back side of the front part 57. A light receiving hole 59 through which an optical signal passes is provided in the front part 57 at a position opposite to the optical signal receiving section 56.

The board mounting portion 35 of the chassis 30 of the light source unit 12 is provided with a light receiving hole 61 through which an optical signal passes, at a position opposite to the optical signal receiving portion 56 when the lighting device 10 is assembled or installed. There is. The light receiving hole 61 is provided at the center of the board mounting part 35 of the chassis 30, that is, in the gap between the four light source boards 31 attached to the board mounting part 35, and is not blocked by the light source board 31. It faces the transparent cover 33. The light receiving hole 61 is provided coaxially with and facing the light receiving hole 59 of the mounting member 55.

To install the lighting device 10 on a ceiling surface, the fixture body 11 is inserted into a hole in the ceiling surface, and the fixture body 11 is attached to a hanging bolt. A power line drawn into the device main body 11 in advance is connected to the terminal block 13.

The mounting spring 42 of the light source unit 12 is hooked onto the spring holder 27 of the fixture body 11, the light source unit 12 is in a suspended state, and the wiring drawn out from the light source board 31 of the light source unit 12 and the wiring drawn out from the power supply part 14 are connected. Connect the wiring with the connector.

By pushing up the light source unit 12, the spring force of the attachment spring 42 pulls up the light source unit 12 and attaches it to the appliance main body 11, completing the installation.

In addition, by supplying external power to the power supply section 14, the power supply section 14 converts the external power into predetermined lighting power and supplies it to the light source board 31, so that the light emitting elements 39 of the light source board 31 light up. The light from the light emitting element 39 passes through the transparent cover 33 and is emitted into the illumination space.

Heat generated by the light emitting element 39 during lighting is transmitted to the metal chassis 30 and radiated.

In addition, when multiple lighting devices 10 are installed on the ceiling surface, in order to set or dim the specific lighting device 10, point a control terminal such as a remote control toward the lighting device 10 from directly below the lighting device 10. to operate and transmit optical signals. The transmitted optical signal passes through the transparent cover 33 of the lighting device 10 and is received by the optical signal receiving section 56 through the light receiving hole 61 of the chassis 30 and the light receiving hole 59 of the mounting member 55 of the optical signal receiving unit 16.

The signal received by the optical signal receiving unit 56 is sent to the power supply unit 14 through the wireless unit 15, and the power supply unit 14 stores settings or performs dimming control according to the signal from the optical signal receiving unit 16.

Furthermore, when controlling a plurality of lighting devices 10 all at once, a wireless signal is transmitted from the control terminal. The transmitted wireless signal is received by the antenna 47 of the wireless unit 15 provided within the instrument body 11 and processed by the communication circuit 46. The signal received by the wireless unit 15 is sent to the power supply unit 14, and the power supply unit 14 performs dimming control according to the signal from the wireless unit 15. Furthermore, the wireless unit 15 transmits a wireless signal so as to transfer the received signal to other lighting devices 10.

At this time, although the instrument main body 11 is made of metal and becomes an obstacle to wireless communication, the radio signals can pass through the radio signal passage holes 49 and 50 provided in the instrument main body 11 and can be easily received by the wireless unit 15.

The wireless unit 15 is located in a region away from the center of the device body 11 and is opposed to the wireless signal passing holes 49 and 50 provided in the device body 11, so that the wireless signal passing through the wireless signal passing holes 49 and 50 is not transmitted to the wireless unit 15. You can make it easier to receive.

Since the antenna 47 of the wireless unit 15 faces the wireless signal passage holes 49 and 50, it is possible to easily receive wireless signals.

Since the wireless unit 15 is opposed to the wireless signal passing holes 49 and 50 provided in the back surface 20 and side surface 21 of the instrument body 11, respectively, it can easily receive wireless signals sent from different directions.

Moreover, when the chassis 30 of the light source unit 12 is made of metal, although the heat dissipation performance of the heat generated by the light source board 31 can be improved, it becomes an obstacle to wireless communication. In this case, since the chassis 30 is also provided with a light source side wireless signal passage hole 51 at a position opposite to the wireless signal passage hole 49 on the back surface 20 of the appliance main body 11, the wireless unit 15 is installed on the lower side of the ceiling surface. Wireless signals sent from the illumination space side can be received through the light source side wireless signal passage hole 51, making it easier to receive wireless signals.

Note that the wireless unit 15 can easily transmit wireless signals to the outside of the appliance main body 11 not only when receiving wireless signals but also when transmitting wireless signals.

In this way, in the lighting device 10 of this embodiment, even if the wireless unit 15 is provided inside the metal fixture body 11, the wireless communication performance can be improved.

Further, since the optical signal receiving unit 16 is provided at the center of the fixture main body 11, the optical signal can be easily received from any direction below the lighting device 10.

Note that the optical signal receiving unit 16 provided at the center of the instrument body 11 may be provided such that the front portion 57 of the mounting member 55 is in contact with the chassis 30 of the light source unit 12. In this case, it is possible to prevent the chassis 30 from being distorted by the heat generated by the light source board 31, and to improve heat dissipation by transmitting the heat generated by the light source board 31 to the fixture body 11 through the chassis 30 and the mounting member 55. .

Note that if the chassis 30 of the light source unit 12 is made of a material such as resin through which radio waves can pass, the light source side wireless signal passage hole 51 may not be provided.

Further, the lighting device 10 is not limited to an embedded lighting device, but may be a direct-mounted lighting device that is directly attached to a ceiling surface.

Although several embodiments of the invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the gist of the invention. These embodiments and their modifications are included within the scope and gist of the invention, as well as within the scope of the invention described in the claims and its equivalents.

10 Lighting equipment
11 Instrument body
12 Light source unit
15 Wireless unit
16 Optical signal receiver unit
20 Back section
21 Side part
23 opening
30 chassis
31 Light source board
49, 50 Wireless signal passage hole
51 Light source side wireless signal passage hole

Claims (3)

a metal instrument body having an opening;
a light source unit having a metal chassis and a light source board attached to the chassis, and attached to the opening of the instrument body;
a wireless unit provided in an off-center area within the device body;
a wireless signal passage hole provided in the instrument main body opposite to the wireless unit;
Equipped with
The device main body has a back portion facing the opening and a side portion to which the light source unit is attached,
The wireless signal passing hole is provided in the back surface portion and the side surface portion facing the wireless unit.
A lighting device characterized by : The lighting device according to claim 1 , wherein the chassis has a light source side wireless signal passage hole at a position opposite to the wireless signal passage hole of the fixture main body. The lighting device according to claim 1 or 2 , further comprising an optical signal receiving unit that is provided at the center of the fixture body and that can come into contact with the light source unit.

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