JP2018147707A - Light fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light fitting which does not hinder a function of a radio transceiver part.SOLUTION: A light fitting includes: a body 1; an arm 2 attached to the body and having an installation part 22 installed at a ceiling etc.; a light source part 3 provided at the front surface side of the body; a radiator 4 provided at the back surface side of the body; a metal power source housing 5 which is provided separated from the installation part and the radiator; a cutout part 51 provided at the power source housing; and a radio transceiver part 52 which is provided within the power source housing, is exposed from the cutout part, and transmits and receives a radio signal.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a lighting fixture that can be controlled by a radio signal.

  2. Description of the Related Art Conventionally, there has been known a lighting fixture including a light emitting module using a light emitting element such as an LED, which is attached to a ceiling of a warehouse or a gymnasium.

Since such an instrument is installed at a high place, it is difficult to perform maintenance frequently. For this reason, it has been a problem that dust and insects enter the gaps between the instruments over the years.

Conventionally, in indoor lighting, a lighting fixture including a control unit having a receiving unit that receives a radio signal and a control unit that outputs a control signal corresponding to the radio signal is known. It is known that a radio signal compatible control device is difficult to transmit and receive radio signals when covered with a shield such as a metal casing.

In the lighting fixture provided with such a control apparatus, it is calculated | required that a control apparatus should be arrange | positioned in the position which can perform efficiently, without preventing reception and output of a radio signal.

JP 2016-162706 A JP 2017-10848 A

    The problem to be solved by the present invention is to provide a luminaire that does not interfere with the function of the wireless transceiver.

A lighting apparatus according to an embodiment of the present invention includes a main body, an arm attached to the main body and having an installation part installed on a ceiling, a light source unit provided on the front side of the main body, and a rear side of the main body. A radiator to be provided; a metal power supply casing provided apart from the installation portion and the radiator; a notch provided in the power supply casing; and a cutout provided in the power supply casing; And a wireless transmission / reception unit that transmits and receives a wireless signal exposed from the notch.

ADVANTAGE OF THE INVENTION According to this invention, it is possible to provide the lighting fixture which does not disturb the function of a radio | wireless transmission / reception part.

It is a perspective view which shows an example of the lighting fixture in embodiment of this invention. It is a top view which shows an example of the lighting fixture in embodiment of this invention. It is a circuit diagram which shows a part of lighting fixture in embodiment of this invention. It is explanatory drawing which represented typically the illumination system using the lighting fixture in embodiment of this invention. It is the schematic which showed the radio wave state of the radio | wireless signal in the radio | wireless transmission / reception part and area controller in embodiment of this invention, and arrangement | positioning which is easy to perform transmission / reception. It is a perspective view which shows an example of 2nd embodiment of this invention.

Hereinafter, the configuration of the embodiment of the present invention will be described with reference to FIGS. 1 to 6. In addition, about description of the lighting fixture which is embodiment of this invention, the light emission surface side is demonstrated as a front side, and the side attached to installation places, such as a ceiling, is demonstrated as a back side.

1 and 2, a light fixture 31 such as an LED (Light Emitting Diode) is arranged on the front side of a metal main body 1 formed in a substantially rectangular plate shape. A light source unit 3 is provided. Near the center of the main body 1, a central hole (not shown) is formed through which a cable (not shown) for supplying power from the external power source e to the light source unit 3 is passed.

On the back side of the main body 1, a radiator 4 for radiating heat generated from the light source unit 3 is provided so as to be thermally connected. The radiator 4 is formed of a metal having excellent heat dissipation such as aluminum. Further, the radiator 4 is formed by arranging a plurality of radiating fins each having a substantially rectangular thin plate in parallel so as to protrude toward the back side of the main body 1. The radiation fin has a long side and a short side. One of the long sides of the heat dissipating fin is connected to the back side of the main body 1, and the other long side is disposed so as to be separated from the horizontal portion 112 described later. Also, in the vicinity of the center of the radiator 4, a cable support fin (not shown) is provided so as to protrude to the back side of the main unit in order to determine and support the position of the cable passing through the central hole of the main unit 1 and the cable hole 56 described later. It is done.

In the embodiment shown in FIGS. 1 and 2, a metal mounting plate 11 connected to the side surface of the main body 1 by screws or the like is provided. The mounting plate 11 has four legs 111 at positions corresponding to the four corners that are the corners of the main body 1. The mounting plate 11 has a horizontal portion 112 that is connected to the four leg portions 111 and disposed on the back side. Further, the mounting plate 11 has a mounting portion 113 that extends a part of the horizontal portion 112 and is bent to the back side. In the vicinity of the center of the horizontal portion 112, a cable hole 56 is provided for passing a cable or the like for electrically connecting the light source unit 3 and a power supply device 54 described later.

The arm 2 is formed of a thin plate-like metal such as iron or aluminum. The arm 2 also has a pair of hanging parts 21 that are surfaces extending in the direction of the back side of the main body 1 and an installation part 22 provided over the back side of the pair of hanging parts 21. The hanging portion 21 is screwed to the mounting portion 113. The attachment portion 113, which is a connection point between the hanging portion 21 and the attachment plate 11, is provided with a screw hole for fixing the fixture and a substantially arc-shaped elongated hole for adjusting and fixing the angle of the lighting fixture.

The arm 2 supports the weight of the entire lighting fixture by attaching the installation portion 22 to the ceiling or the like. The arm 2 may be improved in strength by bending the edge of the installation portion 22 toward the front surface and bending the edge of the hanging portion 21 toward the facing hanging portion 21. In addition, the installation portion 22 of the arm 2 may be formed with a constriction in the member so that it has a substantially concave lens cross-sectional shape when viewed from the back side, thereby improving the material reduction and weight reduction effects of the member. Good. Similarly, the drooping portion 21 of the arm 2 is formed by constricting the member so that it has a substantially concave lens cross-sectional shape when viewed from the side surface where the long hole of the connection portion can be seen. You may raise the effect of weight reduction.

In the embodiment of FIG. 1, the arm 2 has a hanging portion 21 attached to a mounting portion 113.

In the embodiment shown in FIG. 1, a substantially rectangular parallelepiped power supply housing 5 made of a metal that is lightweight and excellent in heat dissipation, such as aluminum, is provided on the back side of the horizontal portion 112. The power supply housing 5 is disposed between the pair of hanging portions 21 of the arm 2 and on the front side of the installation portion 22 so as to be separated from the installation portion 22.

In the embodiment in FIG. 1, the power supply housing 5 is formed in a substantially rectangular parallelepiped shape with an open front surface. The opening on the front surface of the power supply housing 5 is provided so as to be covered by the horizontal portion 112, and the power supply housing extension portion 50 partially extended from the side surface of the power supply housing 5 is bent and screwed to the horizontal portion 112. And fix.

As shown in FIG. 2, the power supply housing 5 is provided with a power supply terminal 55 on a side surface that does not overlap the arm. The power supply terminal 55 is electrically connected to the external power supply e and supplies power to a power supply device 54 described later. The power terminal 55 is disposed in a recess provided on one of the side surfaces of the power casing 5. In FIG. 2, the back side of the recess of the power supply housing 5 is drawn transparently, but this recess is formed to a size that can accommodate the connection portion between the power supply terminal 55 and the external power source e. The back side of the power source 55 covers the back side of the connection portion between the power terminal 55 and the external power source e.

With this structure, since the power supply terminal 55 that is an electrical connection portion does not protrude outside the power supply housing 5, the risk of colliding with an obstacle or the like is reduced, and safety is increased. The power supply terminal 55 may be provided outside the power supply housing 5, for example, on the back side of the power supply terminal 5. In that case, since the shape of the power supply housing 5 is simplified, the productivity is improved.

Further, as shown in FIG. 2, a substantially rectangular cutout 51 is formed on the back surface of the power supply housing 5. The notch 51 is formed at a position that does not overlap the arm 2 when viewed from the back side of the instrument. By providing the notch 51 at a position that does not overlap the arm 2 when viewed from the back, the metal arm 2 is less likely to block a radio signal described later, and radio signals can be easily transmitted and received.

Further, as shown in FIG. 5, a radio signal described later has an area where it is easy to communicate in the front and back directions of a radio transmitter / receiver 52 described later. Since the rear surface of the power supply housing 5 is provided apart from the installation portion 22 of the arm 2, when the cutout portion 51 and the wireless transmission / reception portion 52 are provided on the rear side of the power supply housing 5, the wireless transmission / reception portion 52 performs wireless communication. Signal transmission and reception is less likely to be hindered by metal members.

In addition, since the front surface of the power supply housing 5 is provided apart from the radiator 4, when the cutout portion 51 and the wireless transmission / reception portion 52 are provided on the front surface of the power supply housing 5, the metal signal is transmitted by the metal member. It becomes difficult to prevent transmission and reception. As the most preferable arrangement, the cutout portion 51 and the wireless transmission / reception unit 52 are provided at positions that do not overlap the arm 2 when viewed from the back and side surfaces of the power supply housing 5. With this structure, the wireless transmission / reception unit 52 can perform wireless transmission / reception from the notch 51 to the rear side, and wireless transmission / reception from the cable hole 56 provided near the center of the horizontal portion 112 to the front side. The range in which signals can be transmitted and received is wide and efficient.

Next, the internal configuration of the power supply housing 5 will be described.

Inside the power supply housing 5, a power supply device 54 that is connected to the external power supply e and performs lighting control of the light source unit 3 is provided. In addition, a radio transmission / reception unit 52 that receives a radio signal from the outside and transmits a radio signal is provided at a position exposed from the notch 51. Further, a radio control unit 53 that converts a signal received by the radio transmission / reception unit 52 and outputs the signal to the power supply device 54 is provided. The wireless control unit 53 is attached to the inside of the power supply housing 5 by, for example, screwing. At this time, the position where the wireless control unit 53 is attached may be a position covered by the power supply casing 5, and may be disposed on any of the front, back and side surfaces inside the power supply casing 5. As a desirable mode, since the radio control unit 53 is disposed in the vicinity of the radio transmission / reception unit 52, wiring between the radio control unit 53 and the radio transmission / reception unit 52 is simplified, so that the number of members can be reduced and the assembly can be improved. Can be expected. For example, as shown in FIG. 2, the wireless control unit 53 includes a rectifying device (full-wave rectifying device) REC such as a diode bridge connected to an external power source e that is a power source, and a smoothing device (not shown) such as an electrolytic capacitor. A switching element Q such as a transformer Tr or FET, a control circuit 531, a rectifying / smoothing circuit 532, and the like.

The wireless transmission / reception unit 52 is spaced apart from the power supply terminal 55 and disposed at a position near the side surface facing the side surface on which the power supply terminal 55 is provided. Specifically, the wireless control unit 53 and / or the power supply device 54 are provided between the wireless transmission / reception unit 52 and the power supply terminal 55 when viewed from the back.

In this way, by arranging the power supply terminal 55 and the wireless transmission / reception unit 52 apart from each other in the power supply housing 5, the wireless transmission / reception unit 52 is less affected by electromagnetic waves, so that it is possible to reduce the noise effect of signals to be transmitted and received. .

In the most preferable arrangement, the wireless transmission / reception unit 52 is provided so as to close the notch 51 from the inside. At this time, the wireless transmission / reception unit 52 may be provided so as to form substantially the same plane as the cutout portion 51 to enhance the aesthetic appearance of the instrument, or may be formed to protrude outward from the cutout portion 51. . Accordingly, the wireless transmission / reception unit 52 can easily transmit / receive a wireless signal toward the outside of the notch 51.

At this time, the notch 51 is provided on the side surface of the power supply housing 5 and a part of the horizontal portion 112 that covers the front surface of the power supply housing 5, and the wireless transmission / reception unit 52 is disposed at a position corresponding to the notch 51. Accordingly, a structure in which dust does not easily enter the power supply housing 5 may be adopted. When the cutout portion 51 is provided on the side surface of the power supply housing 5, the cutout portion 51 is provided on the side surface that does not overlap the arm. Therefore, there are few members that interfere with the radio signal, and radio signals can be easily transmitted and received. When the cutout portion 51 is provided on the side surface of the power supply housing 5, the most desirable position is provided on the side surface of the power supply housing 5 that is not on the hanging portion 21 side of the arm 2. This is because there are few metal members around. When the notch 51 is provided in the horizontal part 112 that covers the front opening of the power supply housing 5, the wireless transmission / reception part 52 is provided separately from the radiator 4. Therefore, transmission / reception of wireless signals from the wireless transmission / reception unit 52 is not hindered, and it is possible to improve the design of the appearance of the appliance.

When the notch 51 and the wireless transmission / reception unit 52 are provided in the horizontal part 112, since the wireless transmission / reception unit 52 is separated from the radiator 4, the front side and the rear side of the wireless transmission / reception unit 52 as shown in FIG. Does not interfere with the transmission and reception of wireless signals. As a desirable position, the notch 51 is provided in a substantially rectangular shape at a position along the rear outer edge of the power supply housing 5. According to this structure, since there are few tools made of metal around, radio signals can be transmitted and received more efficiently.

In addition, since the cutout portion 51 may be a part of the surface of the power supply housing 5, for example, it may be provided so as to cut the corners where the three surfaces are in contact with each other to improve the design, or the corner portions where the two surfaces are in contact with each other May be provided so that the wireless transmission / reception unit 52 is exposed on the two side surfaces, thereby improving the transmission / reception efficiency of the wireless signal in the wireless transmission / reception unit 52.

Note that the exposure of the wireless transmission / reception unit 52 refers to a state where the wireless transmission / reception unit 52 is visible when the power supply housing 5 and the horizontal part 112 are viewed from the surface side where the notch 51 is provided. Point to. In other words, the wireless transmission / reception unit 52 may be provided deep inside the power supply housing 5 from the notch 51, or may be provided so that a part protrudes outside from the notch 51. When the wireless transmission / reception unit 51 is provided behind the notch 51 in the power supply housing 5, the wireless transmission / reception unit 52 does not collide with an obstacle and prevents deformation. Further, if the wireless transmission / reception unit 52 is received even if it partially protrudes from the notch 51, it is considered that the transmission / reception efficiency of the wireless signal is further increased.

Next, the wireless transmission / reception unit 52 will be described.

The wireless transmission / reception unit 52 is formed in, for example, a substantially rectangular parallelepiped shape covered with a resin casing or the like that does not block (transmit) a wireless signal. At this time, the resin casing that covers the wireless transmitter / receiver 52 is installed in a place where it is likely to become hot because the lighting fixture is exposed to sunlight from the outside, such as the ceiling of a warehouse, or is easily affected by outside air. Even when applied, the casing is made of a material that is not easily deformed by heat.

Further, the wireless transmission / reception unit 52 has a pair of surfaces formed with a larger area than the notch 51, for example. The other four surfaces which are the side surfaces of the wireless transmission / reception unit 52 are formed as surfaces having a smaller area than the notch 51, and the wireless transmission / reception unit 52 is formed as a substantially plate-shaped outer shape. The wireless transmission / reception unit 52 has identification information (not shown) indicating a part number such as alphanumeric characters and a barcode on the surface exposed from the notch 51.

As shown in FIG. 5, the element for transmitting and receiving a radio signal arranged inside the radio transmission / reception unit 52 according to the present embodiment transmits a radio signal to both the front and back sides of the radio transmission / reception unit 52. Provided.

Next, a lighting system using wireless control using the lighting fixture of the present embodiment will be described.

As shown in FIGS. 3 and 5, the wireless transmission / reception unit 52 is connected to a smartphone, a tablet PC, or the like via an area controller EC, which is a control master as an access point attached to an attachment target such as a ceiling of a warehouse. A wireless LAN device that performs wireless communication with a terminal (mobile terminal) T that is an operation input unit. The frequency of the wireless communication by the wireless transmission / reception unit 511 in this embodiment is, for example, a standard with a standard such as 920 MHz or 2.4 GHz. Therefore, since the wavelength is obtained as a value obtained by dividing the speed of light by the frequency, the wavelength used for the radio signal of this embodiment is about 320 mm or about 125 mm.

The wireless control unit 53 controls the operation of the wireless transmission / reception unit 52, stores a wireless signal received by the wireless transmission / reception unit 52, and controls the light source unit 3 via the power supply device 54 by the wireless signal.

As the external power source e, for example, a commercial AC power source is used, but any other AC external power source or a DC external power source can also be used. At this time, the rectifying element REC and the smoothing element may be unnecessary.

The transformer Tr includes a primary winding and a secondary winding, and a series circuit of a smoothing element, a primary winding, and a switch element Q is connected to the output side of the rectifying element REC. In addition, the secondary winding of the transformer Tr controls the power supplied to the wireless transmission / reception unit 52 via the rectifying / smoothing circuit 532.

The control circuit 531 controls power supplied to the wireless transmission / reception unit 52 and the light source unit 3 by controlling opening and closing of the switch element Q. As the control circuit 531, for example, a control IC such as a microcomputer is used.

The rectifying / smoothing circuit 532 includes, for example, a diode D and a smoothing capacitor C that are rectifying elements.

As shown in FIG. 3, the power supply device 54 converts the power supplied from the external power source e into a voltage or current corresponding to the light source unit 3 and supplies the converted voltage or current to the light source unit 3. Further, the power supply device 54 is attached to the inside of the power supply housing 5 by, for example, screwing.

The power supply device 54 shown in FIG. 3 is connected to the light source unit 3 and is configured so that the operation is controlled by the wireless control unit 53 according to the wireless signal received by the wireless transmission / reception unit 52 and the light source unit 3 is dimmed. ing.

Next, the area controller will be described.

As shown in FIG. 5, when the wireless transmission / reception unit 52 is horizontally disposed, the wireless transmission / reception unit 52 transmits a radio signal in a substantially convex lens shape in a pair of surface directions (front and back directions) that are wider than the notch 51. Alternatively, it is configured to receive. As shown in FIG. 5, the area controller EC is installed horizontally on the ceiling or the like, and mediates between the terminal T and the wireless transmission / reception unit 52 as shown in FIG.

The area controller EC includes a wireless transmission / reception unit similar to the wireless transmission / reception unit 52 of the present embodiment. Therefore, as shown in FIG. 5, it is desirable that the area controller EC installed on the ceiling surface or the like and the wireless transmission / reception unit 52 provided in the embodiment of the present invention are provided at horizontal positions. Therefore, it is desirable that the notch 51 and the wireless transmission / reception unit 52 are provided on the front surface or the back surface of the power supply housing 5.

At this time, since the cable hole 56 is vacant in the central portion of the horizontal portion 112, the cutout portion 51 and the wireless transmission / reception unit 52 are provided on the back side of the power supply housing 5 as a form that facilitates transmission / reception of wireless signals. Is provided. Thus, wireless communication over a wide area is possible without hindering the wireless signal transmission / reception areas to the front and rear surfaces as shown in FIG. 5 by the metal member.

In addition, the notch 51 is formed at a position that does not overlap the drooping portion 21 when viewed from the side of the drooping portion 21 of the arm 2, so that the radio signal transmitted and received by the radio transmitting / receiving unit 52 through the notch 51 is made of metal. Since the light can be transmitted over a wide range because it is not shielded by the arm 2, the wireless control efficiency of the luminaire is improved.

The notch 51 is formed in a size that allows confirmation of an address indicating a part number such as a bar code written on the outside of the resin casing provided with the wireless transmission / reception unit 52. The size that can be confirmed refers to both the size that can be seen by a person such as the manufacturer of the instrument or the construction worker, or the size that can be read by a machine such as an infrared barcode reader. As a result, the efficiency of assembly and inspection work can be improved.

The cutout 51 does not have to be rectangular as long as it can transmit and receive wireless signals. For example, the notch 51 is formed integrally with the cable hole 56 so that a wireless signal can be transmitted / received from the wireless transceiver 52 and a cable for connecting the light source 3 and the power supply device can be provided. May be. According to this structure, since the number of holes provided in the horizontal portion 112 is only one, the structure is simplified and the manufacturing efficiency is increased. At this time, the cable hole 56 that also serves as the notch 51 may be provided at a position of the horizontal portion 112 that does not overlap the arm 2 when viewed from the side of the instrument in order to increase the efficiency of transmitting and receiving radio signals. It may be provided near the center of the horizontal part 112 in consideration of balance and ease of wiring.

In addition, the design of the power supply housing 5 and the lighting fixture is further improved by providing a slit having a length of 1/4 of the radio signal wavelength as the cutout portion 51 that can transmit and receive a radio signal at a minimum. It may be formed so as to serve as a countermeasure for preventing deformation of 52 and a dust-proof measure for the lighting apparatus.

Next, a second embodiment will be described with reference to FIG.

In the second embodiment as shown in FIG. 6, the side surface of the power supply housing 5 is fixed to the hanging portion 21 of the arm 2 by screwing or the like, and the mounting plate 11 is connected to the outer edge of the main body 1 and back. It is formed to protrude to the side. At this time, the mounting plate 11 is connected to the pair of hanging portions 21. In the second embodiment as shown in FIG. 6, unlike the embodiment as shown in FIGS. 1 and 2, the attachment plate 11 does not have the leg portion 111, the horizontal portion 112, and the attachment portion 113. Therefore, in the second embodiment as shown in FIG. 6, the front surface of the power supply housing 5 is not opened, and the front surface of the power supply housing 5 corresponds to the horizontal portion 112 in the embodiment in FIGS. 1 and 2. With such a structure, the number of members may be reduced to reduce the weight of the instrument. That is, in the second embodiment as shown in FIG. 6, the cable hole 56 is provided near the front center of the power supply housing 5. Further, in the modified example related to the position where the notch 51 and the wireless transmission / reception unit 52 are disposed, the horizontal portion 112 is provided as the front surface of the power supply housing 5 in the second embodiment as shown in FIG. The same effect can be expected.

The mounting plate 11 may be formed by extrusion or the like integrally with the main body 1. In the mounting plate 11, the surface on which the mounting plate 11 and the main body 1 are connected may not be particularly the side surface of the main body 1, but may be in the vicinity of the outer edge of the front surface or the rear surface of the main body 1.

Although several embodiments of the present invention have been described, these embodiments have been 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, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the invention described in the claims and equivalents thereof.

1 ... Body
11 ... Mounting plate
111 ... Leg
112 ... Horizontal part
113 ... Mounting part
2 ... arm
21… The bottom
22 ... Installation section
3 ... Light source
31 ... Light emitting element
4… Heat radiator
5… Power supply enclosure
50… Power supply casing extension
51 ... Notch
52 ... Radio transceiver
53 ... Radio control unit
531 ... Control circuit
532 ... Rectifier smoothing circuit
54… Power supply
55 ... Power supply terminal
56 ... Cable hole

Claims (6)

With the body;
An arm attached to the main body and having an installation part installed on a ceiling or the like;
A light source provided on the front side of the main body;
A radiator provided on the back side of the main body;
A metal power supply housing provided apart from the installation portion and the radiator;
A notch provided in the power supply housing;
A wireless transmission / reception unit that is provided inside the power supply case and that transmits and receives a wireless signal exposed from the notch;
The lighting fixture characterized by having. The lighting apparatus according to claim 1, wherein the power supply housing has a front surface and a back surface, and the notch is provided on a front surface or a back surface of the power supply housing. The lighting apparatus according to claim 1, wherein the notch is provided at a position that does not overlap the arm when viewed from the side of the main body. 4. The power supply terminal for supplying external power to a power supply device disposed inside the power supply housing is disposed apart from the wireless transmission / reception unit. 5. The lighting fixture as described in. The lighting device according to any one of claims 1 to 4, wherein the wireless transmission / reception unit is provided so as to close the notch. The lighting device according to any one of claims 1 to 5, wherein the cutout portion is formed to have a size capable of confirming the identification information described in the wireless transmission / reception unit.

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