JP2011049008A - Lighting fixture - Google Patents

Abstract

A small luminaire with improved radio signal reception performance is provided.
A lighting fixture A includes a fixture main body 1, a double ring fluorescent lamp 3 disposed on one surface of the fixture main body 1, and a receiving antenna for receiving a remote control signal transmitted by a radio wave signal. A radio wave receiver 2 and an inverter circuit 4 that controls the lighting output of the double ring fluorescent lamp 3 according to the radio wave signal received by the receiving antenna are provided. The radio wave receiver 2 is arranged such that at least a part of the radio wave receiver 2 is located outside the double ring fluorescent lamp 3 in the instrument body 1.
[Selection] Figure 1

Description

  The present invention relates to a lighting fixture that can be controlled by a radio wave type remote control transmitter.

  2. Description of the Related Art Conventionally, a remote control type lighting apparatus using infrared rays as a communication medium has been provided (see, for example, Patent Document 1). This luminaire is provided with a light receiving element for receiving an infrared signal, and when the light receiving element receives the infrared signal from the remote control transmitter, the lighting circuit is controlled according to the control content included in the infrared signal. The fluorescent lamp is lit, extinguished or dimmed.

  Here, since the above light receiving element receives light of infrared wavelength contained in the lamp light as noise, it is necessary to arrange the light receiving element at a position not easily affected by the lamp light, and an infrared signal transmitted from the remote control transmitter. In general, since the directivity is strong, it is necessary to arrange it at a position where it can be received even if it is transmitted from the lower surface or side surface of the instrument.

  For this reason, in a lighting fixture using a ring-shaped fluorescent lamp such as a double-ring lamp, it is common to place a light receiving element inside the fluorescent lamp, and it is difficult for lamp light to reach by placing the light receiving element at this position. In addition, the infrared signal can be received from any direction.

JP 2004-355875 A (paragraph [0006] -paragraph [0009] and FIGS. 1 and 2)

  In a lighting fixture equipped with a light source that includes light of infrared wavelength as in Patent Document 1 described above, a light receiving element that receives a remote control signal composed of an infrared signal is arranged inside the fluorescent lamp to improve the signal / noise ratio. There are limitations. In particular, when a double spiral fluorescent lamp 6 is used as shown in FIG. 5, the fluorescent lamp 6 is arranged up to the center of the instrument body 1, so that light is received at a position near the center of the instrument body 1. An element (not shown) could not be arranged. For this reason, the signal / noise ratio can be improved if the light receiving element is arranged in a place where the influence of the lamp light is small, for example, outside the instrument, but in this case, the instrument main body becomes large and is not desirable in design. It was.

  Therefore, in order to solve the above problems, it is conceivable to use radio waves instead of infrared rays. For example, in the case of an inverter-type lighting fixture, high-frequency electromagnetic noise radiated from a lighting circuit or a lamp is There was a possibility that it would become noise for the remote control signal consisting of the signal.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a small luminaire having improved radio wave signal reception performance.

  According to the first aspect of the present invention, an instrument body, a light source disposed on one surface of the instrument body, a receiving antenna for receiving a remote control signal transmitted by a radio signal, and a radio signal received by the receiving antenna And a lighting circuit for controlling the lighting output of the light source, and the receiving antenna is characterized in that at least a part of the receiving antenna is disposed outside the light source.

  The invention of claim 2 is characterized in that the light source comprises a fluorescent lamp, the lighting circuit comprises an inverter circuit for lighting the fluorescent lamp at a high frequency, and a radio signal having a frequency different from the lighting frequency of the fluorescent lamp is used as the radio signal. .

  According to a third aspect of the present invention, the light source comprises an annular fluorescent lamp in which an annular discharge path is formed between a pair of electrodes provided at both ends.

  According to a fourth aspect of the present invention, in the light source, two annular arc tubes each having an electrode at one end and closed at the other end are arranged concentrically on the same plane, and the vicinity of the other end is joined by bridge joining. Thus, it is characterized by comprising a double ring fluorescent lamp in which one discharge path is formed.

  According to a fifth aspect of the present invention, the light source is a double spiral fluorescent lamp in which a discharge path formed between a pair of electrodes provided at both ends turns spirally on one side on both sides around the center of the discharge path. It is characterized by comprising.

  The invention of claim 6 is characterized in that either one of a circular fluorescent lamp or a double-ring fluorescent lamp is used as a light source, and a plurality of the fluorescent lamps are concentrically arranged on the same plane.

  According to the first aspect of the present invention, since the receiving antenna is disposed so that at least a part of the instrument body is outside the light source, the influence of high frequency electromagnetic noise from the light source can be reduced, and as a result, the radio signal Reception performance can be improved. In addition, since it is not necessary to increase the size of the instrument body in order to place the receiving antenna, it is possible to reduce the size of the instrument body compared to the conventional example, and to reduce the design restrictions due to further increase in size. There is.

  According to the invention of claim 2, by using the radio wave signal having a frequency different from the lighting frequency of the fluorescent lamp, it is possible to suppress the influence of noise radiated from the fluorescent lamp or the lighting circuit, and as a result, the radio wave signal is reliably transmitted. There is an effect that can be received.

  According to the invention of claim 3, the same effect as that of claim 1 or 2 can be obtained.

  According to the invention of claim 4, the same effect as that of claim 1 or 2 can be obtained.

  According to the invention of claim 5, the same effect as in claim 1 or 2 can be obtained, and in the conventional example, it is necessary to enlarge the instrument body in order to arrange the light receiving element for receiving the infrared signal, According to the present invention, it is possible to arrange a receiving antenna without enlarging the instrument body, and there is an effect that the size can be reduced as compared with the conventional example.

  According to the invention of claim 6, the same effect as that of claim 3 or 4 can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS The lighting fixture of Embodiment 1 is represented typically, (a) is a bottom view, (b) is a sectional side view partially broken. It is a schematic block diagram same as the above. (A), (b) is the bottom view which represented typically the other example same as the above. The lighting fixture of Embodiment 2 is represented typically, (a) is a bottom view, (b) is a sectional side view partly broken. It is the bottom view which represented typically the lighting fixture of the prior art example.

  Hereinafter, embodiments of a lighting apparatus according to the present invention will be described with reference to the drawings. A lighting fixture according to the present invention is, for example, a ceiling-mounted lighting fixture that is used to illuminate a room or the like, and is remotely controlled in accordance with a remote control signal transmitted by a radio signal from a remote control transmitter. It can be done.

(Embodiment 1)
1 (a) and 1 (b) show a lighting fixture A of the present embodiment. The lighting fixture A is arranged on the fixture main body 1 and one surface of the fixture main body 1 (the lower surface in FIG. 1 (b)). A radio wave receiver 2 having a ring-shaped fluorescent lamp (light source) 3 and a receiving antenna 20 (see FIG. 2) for receiving a remote control signal transmitted as a radio signal from a remote control transmitter (not shown); An inverter circuit (lighting circuit) 4 that controls the lighting output of the double ring fluorescent lamp 3 according to the radio signal received by the receiving antenna 20 is provided.

  The instrument body 1 includes a substantially disc-shaped mounting base 10 made of metal (for example, an iron plate) attached to a construction surface such as a ceiling surface, and an inverter circuit that is also made of metal and fixed to the lower surface of the mounting base 10. 4 and a bottom cover 11 that is attached to the mounting base 10 so as to cover the mounting base 10, and an insertion hole 1 a through which a hooking seal (not shown) is inserted communicates with the center of the mounting base 10 and the bottom cover 11. Is provided. The lower surface of the lower surface cover 11 is a reflection surface for reflecting light from the double ring fluorescent lamp 3 downward.

  The double-ring fluorescent lamp 3 has two ring-like luminous tubes 3a, 3a having electrodes (not shown) at one end and closed at the other end arranged concentrically in the same plane. One discharge path is formed inside by integrally joining the vicinity of the other end of each of them by bridge joining. Since the double ring fluorescent lamp 3 is well known in the art, description thereof will be omitted for details.

  The receiving antenna 20 is made of a conductive pattern on a substrate or made of a metal wire, and the radio receiving unit 2 is configured by forming the receiving antenna 20 and the receiving circuit 21 on the same substrate. (See FIG. 2). In the present embodiment, the radio wave receiving unit 2 is disposed outside the fluorescent lamp 3 in the instrument main body 1. In the present embodiment, the radio wave receiving unit 2 is exposed by providing a notch 11a in the lower surface cover 11 so that the remote control signal from the remote control transmitter is not shielded by the metal lower surface cover 11, and further the radio wave reception is performed. The part 2 is covered with a resin cover (not shown).

  Further, in the present embodiment, since the double ring fluorescent lamp 3 is lit at high frequency by the inverter circuit 4, when the frequency of the radio signal is in the same band as the lighting frequency of the double ring fluorescent lamp 3, There is a possibility that the luminaire A malfunctions due to high-frequency electromagnetic noise radiated from the annular fluorescent lamp 3 or the inverter circuit 4. Therefore, in this embodiment, by using a radio signal having a frequency different from the lighting frequency of the double ring fluorescent lamp 3, it is not affected by high frequency electromagnetic noise radiated from the double ring fluorescent lamp 3 or the inverter circuit 4. I have to. For example, a frequency such as a 300 MHz band, a 400 MHz band, or a 2.4 GHz band is selected as the frequency of the radio signal with respect to the lighting frequency of 60 to 90 kHz of the double ring fluorescent lamp 3.

  From the above, according to the present embodiment, the double ring fluorescent lamp 3 and the inverter circuit 4 emit light by disposing the radio wave receiver 2 including the receiving antenna 20 outside the double ring fluorescent lamp 3. A position where at least a part of the receiving antenna 20 is not shielded by the metallic instrument body 1 by reducing the influence of high-frequency electromagnetic noise and providing the cutout portion 11a at the portion of the lower surface cover 11 that interferes with the radio wave receiving portion 2 Therefore, the radio signal from the remote control transmitter can be prevented from being shielded by the lower surface cover 11, and as a result, the radio signal reception performance can be improved. Moreover, since the instrument main body 1 does not need to be enlarged in order to arrange the radio wave receiving unit 2 including the receiving antenna 20, the instrument main body 1 can be made smaller and larger than the conventional example. Restrictions are also reduced.

  Further, by using a radio signal having a frequency different from the lighting frequency of the double ring fluorescent lamp 3, the influence of high frequency electromagnetic noise radiated from the double ring fluorescent lamp 3 or the inverter circuit 4 can be further suppressed. As a result, radio signals can be received reliably. Furthermore, since radio waves are not as directional as infrared rays, even when radio waves are transmitted from the direction of arrow B in FIG. 1B (the side opposite to the side where radio wave receiving unit 2 is disposed) Radio waves can be received in the same manner as when radio waves are transmitted from the direction A (the side where the radio wave receiver 2 is disposed).

  Next, Fig.3 (a) (b) has shown the other example of the lighting fixture A of this embodiment, and in Fig.3 (a), between a pair of electrodes (not shown) with which both ends are equipped, The circular fluorescent lamps 5 and 5 provided with the annular arc tube 5a constituting the discharge path are arranged as concentric circles on the same plane as a light source. In FIG. An annular fluorescent lamp 3, 3 arranged concentrically on the same plane is used as a light source. In either case, as shown in FIGS. 1A and 1B, the radio wave receiver 2 is disposed outside the double ring fluorescent lamp 3 (or the ring fluorescent lamp 5), and the radio wave of the lower surface cover 11 is concerned. Since the notch portion 11a is provided at a site that interferes with the receiver 2, the radio signal reception performance can be improved, and the instrument body 1 can be downsized.

(Embodiment 2)
Embodiment 2 of the lighting fixture A which concerns on this invention is demonstrated based on Fig.4 (a) (b). In the first embodiment, the radio wave receiver 2 is arranged so as not to overlap the double ring fluorescent lamp 3 in a direction orthogonal to the ceiling surface (a direction perpendicular to the paper surface in FIG. 1A). In the embodiment, the radio wave receiver 2 is disposed so as to overlap the double spiral fluorescent lamp 6 within a range that does not affect the reception performance of the receiving antenna 20. In addition, the same code | symbol is attached | subjected to the component same as Embodiment 1, and description is abbreviate | omitted.

  The lighting fixture A of this embodiment includes a fixture body 1, a double spiral fluorescent lamp 6, a radio wave receiver 2, and an inverter circuit 4.

  In the double spiral fluorescent lamp 6, the arc tube 6a constituting the discharge path is formed in a double spiral shape that spirally swivels on one side on both sides around the center, and is formed at both ends of the arc tube 6a. Are provided with electrodes (not shown). Since the double spiral fluorescent lamp 6 is well known in the art, description thereof is omitted for details.

  Here, in this embodiment, in a direction orthogonal to the ceiling surface (a direction perpendicular to the paper surface in FIG. 4A), a part of the radio wave receiver 2 is connected to the arc tube 6a of the double spiral fluorescent lamp 6. The overlapping amount is set in a range that does not affect the reception performance of the reception antenna 20. Further, the lower surface cover 11 is provided with a notch 11a as in the first embodiment to prevent the radio wave signal from being shielded by the lower surface cover 11.

  Therefore, similarly to the first embodiment, the radio wave receiving unit 2 including the receiving antenna 20 is arranged outside the double spiral fluorescent lamp 6, so that the high frequency generated by the double spiral fluorescent lamp 6 and the inverter circuit 4. The influence of electromagnetic noise is reduced, and at least a part of the receiving antenna 20 is arranged at a position that is not shielded by the metal instrument body 1, so that the radio wave signal from the remote control transmitter is shielded by the bottom cover 11. As a result, the reception performance of the radio signal can be improved. Furthermore, in the conventional example, it is necessary to enlarge the instrument body in order to arrange the light receiving element for receiving the infrared signal. However, according to the present embodiment, the radio wave receiving unit 2 (for receiving) without increasing the instrument body 1 The antenna 20) can be arranged, and the size can be reduced as compared with the conventional example.

  In the present embodiment, the case of the double spiral fluorescent lamp 6 has been described as an example. However, other lamps such as the above-described annular fluorescent lamp 5 and double annular fluorescent lamp 3 may be used. An effect is obtained.

1 Instrument body 2 Radio wave receiver 3 Double ring fluorescent lamp (light source)
4 Inverter circuit (lighting circuit)
20 Receiving antenna A Lighting equipment

Claims (6)

  An instrument body, a light source disposed on one surface of the instrument body, a receiving antenna for receiving a remote control signal transmitted by a radio signal, and a lighting output of the light source according to the radio signal received by the receiving antenna A lighting circuit that controls the lighting antenna, wherein at least a part of the receiving antenna is disposed outside the light source in the fixture body.   2. The light source comprises a fluorescent lamp, and the lighting circuit comprises an inverter circuit for lighting the fluorescent lamp at a high frequency, and a radio signal having a frequency different from a lighting frequency of the fluorescent lamp is used as the radio signal. The luminaire described.   The lighting apparatus according to claim 1, wherein the light source includes an annular fluorescent lamp in which an annular discharge path is formed between a pair of electrodes provided at both ends.   In the light source, two annular arc tubes each having an electrode at one end and closed at the other end are arranged concentrically on the same plane, and the vicinity of the other end is joined by bridge joining. 3. The luminaire according to claim 1, comprising a double ring fluorescent lamp in which two discharge paths are formed.   The light source comprises a double spiral fluorescent lamp in which a discharge path formed between a pair of electrodes provided at both ends is swirled in a substantially plane on both sides with the center of the discharge path as a center. The lighting fixture of any one of Claim 1 or 2.   5. The method according to claim 3, wherein one of the annular fluorescent lamp and the double annular fluorescent lamp is used as the light source, and a plurality of the fluorescent lamps are concentrically arranged on the same plane. Lighting fixtures.

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