JPH08237763A - Radio transmitter-receiver - Google Patents

Abstract

PURPOSE: To mount the radio transmitter-receiver to a fluorescent light socket together with a fluorescent lamp for the radio transmission reception operation and to keep excellent lighting by lighting the fluorescent lamp. CONSTITUTION: The radio transmitter-receiver main body 21 is provided with a cylindrical case 24 whose diameter is nearly equal to that of a fluorescent lamp, a transmission circuit, a reception circuit, a control circuit and a power supply circuit contained in the case, an antenna connecting to the transmission reception circuits and extended to the outside of the case, a pin terminal 25 mounted to a fluorescent lamp socket 23a provided to one end of the case, and a pin mount hole 26 provided to the other end of the case and to which a base pin 22a of the fluorescent lamp 22 is mounted. When an AC voltage is applied between the fluorescent lamp sockets 23a, 23b, the fluorescent lamp is lighted. When the fluorescent lamp is lighted and its tube AC voltage is made stable, the power supply circuit conducts voltage conversion to apply a DC voltage to the circuits in the case so as to allow the transmitter-receiver to make radio transmission reception.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio transmitter / receiver, and more particularly to a radio transmitter / receiver which can be mounted using a fluorescent lamp socket.

[0002]

2. Description of the Related Art FIG. 5 shows an example of a wireless LAN constructed indoors. For example, a plurality of master stations 1 are installed in a place with good visibility on the ceiling.
a, 1b are arranged, and a plurality of slave stations 2a, 2 are placed on a desk or the like.
b and 2c are arranged, the master station 1a and the slave station 2a form one wireless zone, and the master station 1b and the slave stations 2b and 2c use another wireless zone.
Form two wireless zones. The master stations 1a and 1b have a power line 3
And a signal line 4 such as a coaxial cable for wired connection,
The master station 1a and the slave station 2a, and the master station 1b and the slave stations 2b and 2c are
Wireless data communication is performed by an access method such as carrier sense multiple access (CSMA).

The slave station 2a is connected to the personal computer 5. Although not shown, the slave stations 2b and 2c are also connected to other personal computers.

In this conventional apparatus, the power line 3 for supplying power to the master stations 1a and 1b and the communication line 4 for data communication must be laid on the ceiling, which requires a large-scale construction. In addition, when changing the layout, it is necessary to change the position of the master station as well as the arrangement of the power supply lines and communication lines, which also requires large-scale construction.

Therefore, in Japanese Utility Model Publication No. 6-31286, as shown in FIG. 6, a housing 11 having substantially the same shape as a general-purpose fluorescent lamp is provided so that it can be mounted between the fluorescent lamp sockets 12a and 12b. The transmitter / receiver circuits 13 and 1 shown in FIG.
4, a central processing circuit 15, a voltage conversion circuit 16 and other circuits that form a wireless transmission / reception circuit are housed, and a wireless transmission / reception device in which antennas 17 and 18 having different directivity patterns are arranged on the outer surface of the housing 11 is presented. There is.

[0006] In this radio transmitter / receiver, an AC voltage for a fluorescent lamp is converted into a desired DC voltage by a voltage conversion circuit 16 to be used as a power source, and the antenna 17 is used for radio data transmission / reception with a terminal transmitter / receiver arranged on a desk or the like. It is used for transmission and the antenna 18 is used for wireless data transmission with the bus interface transceiver.

By configuring the wireless transmission / reception device in this way, when this device is used as a master station, wiring of power lines and communication lines between the master stations is not required, and wireless transmission / reception is possible for layout changes. All that is required is to attach the device to another fluorescent lamp socket, which is simple.

[0008]

However, since the radio transmitter / receiver has a structure in which the casing 11 is mounted in the fluorescent lamp socket instead of the general-purpose fluorescent lamp, the fluorescent lamp cannot be used correspondingly. When a plurality of such wireless transmitter / receivers are attached to indoor fluorescent lamp sockets, there is a problem in that the number of indoor fluorescent lamps decreases, the lighting becomes dark, and the lighting balance is lost.

In view of the above, the present invention has a structure that can be attached to a fluorescent lamp socket by connecting it to a fluorescent lamp. Further, the fluorescent lamp can be turned on during operation. Therefore, wireless transmission / reception operation can be performed and the illumination becomes dark, and the illumination is balanced. (EN) Provided is a wireless transmission / reception device which can be prevented from collapsing as much as possible.

The present invention further provides a radio transmitter / receiver capable of notifying a failure.

[0011]

The invention according to claim 1 is
A cylindrical housing having substantially the same diameter as a general-purpose fluorescent lamp, a transmitting circuit and a receiving circuit housed in the housing, a control circuit for controlling the sending and receiving circuits, and an AC voltage converted to a DC voltage for sending.
A power supply circuit for supplying to the receiving circuit and the control circuit, an antenna or an infrared ray emitting / receiving device which is connected to the transmitting and receiving circuit and is provided inside or outside the housing, and one fluorescent lamp socket provided at one end of the housing. Equipped with a pin terminal to be attached to, and a pin mounting hole to which the cap pin at one end of the fluorescent lamp provided at the other end of the housing is mounted, and the pin terminal of the housing is mounted to one fluorescent lamp socket,
When the fluorescent lamp lighting AC voltage is applied between the fluorescent lamp sockets with the cap pins at both ends of the fluorescent lamp mounted between the pin mounting holes of the housing and the other fluorescent lamp socket, the control circuit
Control to directly apply this AC voltage for lighting the fluorescent lamp across the fluorescent lamp, and after that, when the fluorescent lamp starts and lights up and the AC voltage stabilizes, the power supply circuit converts the AC voltage to the DC voltage. Is.

According to a second aspect of the invention, in the first aspect of the invention, the control circuit turns off the fluorescent lamp by interrupting or interrupting the application of the AC voltage between both ends of the fluorescent lamp when radio transmission / reception is disabled. Or, it blinks.

[0013]

According to the first aspect of the invention, the casing containing the transmitting circuit, the receiving circuit, the control circuit for controlling the transmitting and receiving circuits, and the power supply circuit for converting the AC voltage into the DC voltage is a fluorescent lamp. Connect and install between a pair of fluorescent lamp sockets. When an AC voltage for lighting the fluorescent lamp is applied between the fluorescent lamp sockets in this state, the fluorescent lamp lights. Then, when the AC voltage is stabilized, the power supply circuit converts the AC voltage into a DC voltage and supplies the DC voltage to the transmission circuit, the reception circuit, and the control circuit in the housing. This enables the control circuit to control the transmission and reception circuits, and the device starts wireless transmission / reception operation.

According to the second aspect of the invention, when the transmitting circuit, the receiving circuit, the antenna, or the infrared light emitting / receiving device fails and wireless transmission / reception becomes impossible, the application of the AC voltage between both ends of the fluorescent lamp is interrupted or Intermittently turn off or blink the fluorescent lamp to notify.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, 21 is a radio transmitter / receiver main body, 22 is a fluorescent lamp, and 23a and 23b are fluorescent lamp sockets.

The radio transmitter / receiver body 21 has a cylindrical casing 24 having a diameter substantially the same as that of the fluorescent lamp 22 and a length shorter than that of the fluorescent lamp 22. A transmitter circuit, a receiver circuit, which form a circuit portion of the device,
A control circuit for controlling the sending and receiving circuits and a power supply circuit for converting the AC voltage into a DC voltage for sending and supplying the DC voltage to the receiving circuit and the control circuit are housed.

A pin terminal 25 to be attached to the fluorescent lamp socket 23a is provided at one end of the housing 24, and a pin attaching hole 2 to which a cap pin 22a at one end of the fluorescent lamp 22 is attached to the other end.
6 is provided. Base pin 22 at the other end of the fluorescent lamp 22
b is attached to the fluorescent lamp socket 23b.

FIG. 2 is a circuit diagram showing the construction of a fluorescent lamp lighting circuit and a radio transmitter / receiver. One end of a commercial AC power supply 31 is connected to one contact of the fluorescent lamp socket 23b via a ballast 32, and the other end is connected. Is connected to one contact of the fluorescent lamp socket 23a.

A parallel circuit of a glow starter 33 and a capacitor 34 is connected between the other contacts of the fluorescent lamp sockets 23a and 23b.

A power supply circuit 35 is connected between the pin terminal 25 of the housing 24 and the pin mounting hole 26.

The power supply circuit 35 includes a terminal switching circuit 36,
It comprises a protection circuit 37, a voltage conversion circuit 38, a full-wave rectification diode bridge circuit 39 and a regulator 40, and the terminal switching circuit 3 is provided between the pin terminal 25 and the pin mounting hole 26.
The protection circuit 37 is connected via 6.

The terminal switching circuit 36 has two lead terminals at both ends, two lead terminals on one end side are connected to the pin terminal 25, and two lead terminals on the other end side are the protection circuit 37. Connected to. Then, the two lead terminals on the one end side and the two lead terminals on the other end side, which are mutually connected, are manually switched.

This is because the cap pins of the fluorescent lamp 22 are usually indistinguishable and it is not known in which direction the fluorescent lamp 22 is attached to the fluorescent lamp socket. Therefore, the terminals to be connected by the terminal switching circuit 36. , And the ground side terminal of the AC power supply 31 can be connected to a fixed side of the circuit.

The protection circuit 37 includes one open / close switch 41 and one two-contact changeover switch 42. One changeover contact 42a of the changeover switch 42 is connected to the pin mounting hole 26 through the open / close switch 41. It is connected to one contact.

The common contact 42c of the changeover switch 42
Is connected to one of the lead terminals of the terminal switching circuit 36.

The other contact of the pin mounting hole 26 is directly connected to another one of the lead terminals of the terminal switching circuit 36 via the protection circuit 37.

Each switch 41, 42 of the protection circuit 37
Is controlled to be switched by a control circuit described later.

The other changeover contact 4 of the changeover switch 42
2b and one switching contact 42a of the changeover switch 42
Is connected to the open / close switch 41 at the voltage conversion circuit 38.
It is connected to the input terminal of.

The voltage conversion circuit 38 reduces the AC power supply voltage to a desired voltage and outputs it. The output voltage is full-wave rectified by the full-wave rectification diode bridge circuit 39 and then supplied to the regulator 40. ing.

The regulator 40 converts the input full-wave rectified waveform into a desired DC voltage and supplies it to the radio transmission / reception circuit 43.

As shown in FIG. 3, the radio transmission / reception circuit 43 includes a control circuit 44, two transmission circuits 45 and 46, two reception circuits 47 and 48, and a battery 49 for backing up the control circuit 44 at the time of power failure. , The regulator 40
The DC voltage from the control circuit 44, the transmission circuits 45, 46,
It is applied to the receiving circuits 47 and 48, respectively. Further, the battery 49 is configured to be charged when a DC voltage is applied from the regulator 40.

The control circuit 44 controls each of the transmission circuits 4
5, 46 and the receiving circuits 47, 48 are controlled to perform wireless data transmission control.

One transmitting circuit 45 and one receiving circuit 4
7 is connected to the first antenna 51 via the first antenna switching circuit 50, and the other transmitting circuit 46 and the other receiving circuit 48 are connected to the second antenna 53 via the second antenna switching circuit 52. are doing.

The respective antenna switching circuits 50 and 52 are switching-controlled by the control circuit 44, and when the first antenna 51 receives, the first antenna 51 is received.
Is connected to the receiving circuit 47, and when the second antenna 53 receives, the second antenna 53 is connected to the receiving circuit 48. Further, when transmitting via the first antenna 51, the first antenna 51 is connected to the transmission circuit 45,
When transmitting via the second antenna 53, the second antenna 53 is connected to the transmission circuit 46.

The antennas 51 and 53 are arranged, for example, along the outer peripheral surface of the housing 24. The antennas 51 and 53 may be housed in the housing 24.

Further, the control circuit 44 has a failure detecting function, and the transmitting circuits 45 and 46, the receiving circuits 47 and 48,
When any of the antennas 51, 53 and the antenna switching circuits 50, 52 fails and wireless transmission / reception is disabled, the opening / closing switch 41 is opened to stop the power supply to the fluorescent lamp 22. It is like this.

In such a configuration, when the fluorescent lamp 22 is in the off state, the control circuit 36 closes the open / close switch 33 of the protection circuit 29 and connects the common contact 34c of the changeover switch 34 to one changeover contact 34a. To do.

When the AC power supply 31 is turned on in this state,
First, a ballast 32, one filament electrode of the fluorescent lamp 22, a parallel circuit of a glow starter 33 and a capacitor 34,
A current flows through the terminal switching circuit 36, the protection circuit 37, the other filament electrode of the fluorescent lamp 22, the protection circuit 37, and the terminal switching circuit 36, and the filament electrode of the fluorescent lamp 22 is preheated. At this time, since the other switching contact 34b of the changeover switch 42 of the protection circuit 37 is open, no current flows through the voltage conversion circuit 38.

After that, when the glow starter 33 is turned off for a while and a high voltage is generated in the ballast 32, this high voltage is applied between the filament electrodes of the fluorescent lamp 22. In this way, the fluorescent lamp 22 starts discharging. This operation is repeated until the fluorescent lamp 22 is turned on and turned on.

When the fluorescent lamp 22 is turned on, the fluorescent lamp 22 is turned on.
The voltage applied to is stable. The control circuit 44 detects the stabilization of the voltage and switches the changeover switch 42 of the protection circuit 37. That is, the common contact 42c of the changeover switch 42
Is separated from the switching contact 42a and connected to the switching contact 42b.

As a result, AC power is supplied to the voltage conversion circuit 38. The current supply to the fluorescent lamp 22 is continued through the voltage conversion circuit 38 and the changeover contact 42b of the changeover switch 42.

The voltage converting circuit 38 steps down the AC voltage, the diode bridge circuit 39 full-wave rectifies it, and the regulator 40 converts it into a desired DC voltage. In this way, the desired DC voltage is applied to the wireless transmission / reception circuit 43, and the wireless transmission / reception circuit 43 becomes operable.

In the wireless transmission / reception circuit 43, when the data is wirelessly transmitted from the first antenna 51, the control circuit 44 controls the antenna switching circuit 50 to connect the first antenna 51 to the transmission circuit 45, and The transmission circuit 45 is controlled to wirelessly transmit the data, and the data is transmitted to the second antenna 53.
When transmitting wirelessly from the control circuit 44, the control circuit 44 controls the antenna switching circuit 52 to transmit the second antenna 53 to the transmission circuit 46.
And wirelessly transmit data by controlling the transmission circuit 46.

When the first antenna 51 receives the data, the control circuit 44 controls the antenna switching circuit 50 to connect the first antenna 51 to the receiving circuit 47 and control the receiving circuit 47. When the second antenna 53 receives the data, the control circuit 44 controls the antenna switching circuit 52 to connect the second antenna 53 to the receiving circuit 48, and the receiving circuit 48 receives the data. Control 48 to receive data.

In this way, the wireless transmission / reception device operates to wirelessly transmit / receive data, and at the same time, the fluorescent lamp 22 is turned on to secure illumination.

If any of the transmitting circuits 45 and 46, the receiving circuits 47 and 48, the antennas 51 and 53, and the antenna switching circuits 50 and 52 fails during use, the wireless communication is disabled. Reference numeral 44 opens the open / close switch 41 to stop energizing the fluorescent lamp 22. As a result, the fluorescent lamp 22 is turned off to notify that an abnormality has occurred in the wireless transceiver.

At this time, the application of the AC voltage to the voltage conversion circuit 38 is also stopped and the application of the DC voltage from the regulator 40 to the control circuit 44 is cut off. At this time, the control circuit 44 receives the DC voltage from the battery 49. As it is done, there is no problem in operation.

By the way, when the fluorescent lamp 22 is turned on, the voltage conversion circuit 38 is provided in the energizing circuit for the fluorescent lamp 22. The fluorescent lamp 22 used is the fluorescent lamp socket 2
It is shorter and consumes less power than the original fluorescent lamp installed between 3a and 23b.

Therefore, the circuit constant of the voltage conversion circuit 38 is set so that the impedance viewed from the ballast 32 becomes the same as when the original fluorescent lamp is mounted. As a result, an appropriate current flows through the ballast 32 and the fluorescent lamp 22, and there is no possibility that the ballast 32 and the fluorescent lamp 22 will be damaged.

Further, since the voltage conversion circuit 38 and the fluorescent lamp 22 are connected in series, a very large direct current cannot be obtained as a current to be supplied to the wireless transmission / reception circuit 43, but a small-sized wireless transmission / reception as in this embodiment is performed. Sufficient current to drive the device. Therefore, the wireless transmitter / receiver body 21 can be operated without any trouble.

In this embodiment, the wireless transmission / reception circuit 43
Although the antenna is provided in the above and the wireless communication is performed by the radio wave, the invention is not limited to this. For example, the infrared light emitter and the infrared light receiver may be provided as a pair and the wireless communication may be performed by the infrared light. .

In this embodiment, the open / close switch 41 is opened to disable the fluorescent lamp 22 when radio transmission / reception is disabled.
Was turned off, but is not necessarily limited to this,
When the wireless transmission / reception is disabled, the opening / closing switch 41 may be opened / closed to blink the fluorescent lamp 22.

FIG. 4 is a diagram showing a layout example when a wireless LAN is constructed in a room by using the wireless transmitter / receiver of the present invention. The wireless transmitter / receiver 121 and the fluorescent lamp 122 are provided in a fluorescent lamp socket 101 arranged on an indoor ceiling. And the wireless transmission / reception device 221 and the fluorescent lamp 222 are connected and assembled in another fluorescent lamp socket 201 apart from the fluorescent lamp socket 101.

Each of the wireless transmission / reception devices 121 and 221 is used as a master station, and data can be wirelessly or wired transmitted between the master stations.

Then, a desk is arranged below the fluorescent lamp socket 201, and the personal computer 61 and the wireless transmission / reception device 62 are arranged on the desk connected to each other by a cable. The wireless transmitter / receiver 62 is used as a slave station.

In this way, the data input by the personal computer 61 can be wirelessly transmitted from the wireless transmission / reception device (slave station) 62 to the wireless transmission / reception device (parent station) 221. Data is wirelessly or wired transmitted between the wireless transmission / reception devices (master stations) 121 and 221.

If the circuits shown in FIG. 3 are provided as the wireless transmission / reception devices (master stations) 121 and 221, the first antenna 5
1 can be used to perform wireless communication with the wireless transmitter / receiver (slave station) 62, and the second antenna 53 can be used to perform wireless communication between the wireless transmitter / receiver (master station) 121 and 221.

In this case, the radio transmitter / receiver 12
In the fluorescent lamp sockets 101, 201 in which the fluorescent lamps 1, 221 are arranged, the fluorescent lamps 122,
222 is arranged and lights up in the same manner as the fluorescent lamp of the original length mounted in another fluorescent lamp socket, so that the illumination around the wireless transmission / reception devices 121 and 221 is secured.

Therefore, as compared with the case where all the fluorescent lamps of the original length are used as the fluorescent lamps in the room, the overall brightness is slightly reduced, but not so much as to cause any trouble. That is, the lighting in the room does not become dark and the balance of the lighting is not lost.

[0061]

As described above, according to the present invention, the fluorescent lamp can be connected to the fluorescent lamp so as to be mounted, and the fluorescent lamp can be turned on during operation. Therefore, the wireless transmission / reception operation can be performed and the illumination becomes dark. As much as possible, it is possible to prevent the balance of lighting from being lost.

Further, according to the present invention, it is possible to notify the device failure by turning off or blinking the fluorescent lamp.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an appearance of an embodiment of the present invention.

FIG. 2 is a circuit diagram showing configurations of a fluorescent lamp lighting circuit and a wireless transmission / reception device of the same embodiment.

FIG. 3 is a block diagram showing the configuration of a wireless transmission / reception circuit of the same embodiment.

FIG. 4 is a wireless LAN using the wireless transmission / reception device of the present invention.
FIG.

FIG. 5 is a diagram showing a layout example of a conventional wireless LAN.

FIG. 6 is a perspective view showing another conventional example.

FIG. 7 is a block diagram of a wireless transmission / reception device of the conventional example.

[Explanation of symbols]

 21 ... Wireless transmitter / receiver body 22 ... Fluorescent lamp 23a, 23b ... Fluorescent lamp socket 24 ... Housing 35 ... Power supply circuit 37 ... Protection circuit 43 ... Wireless transmitter / receiver circuit 44 ... Control circuit

Claims (2)

[Claims] 1. A cylindrical housing having substantially the same diameter as a general-purpose fluorescent lamp, a transmission circuit and a reception circuit housed in the housing, a control circuit for controlling the transmission and reception circuits, and an AC voltage converted to a DC voltage. A power supply circuit for supplying to the sending / receiving circuit and the control circuit, an antenna or an infrared light emitting / receiving device connected to the sending / receiving circuit and provided inside or outside the housing, and one end of the housing A pin terminal to be mounted on one of the fluorescent lamp sockets provided in the housing, and a pin mounting hole to which a cap pin at one end of the fluorescent lamp provided at the other end of the housing is mounted. Attach it to the fluorescent lamp socket of
When fluorescent lamp lighting AC voltage is applied between the fluorescent lamp sockets with the cap pins at both ends of the fluorescent lamp mounted between the pin mounting holes of the housing and the other fluorescent lamp socket,
The control circuit performs control to directly apply the AC voltage for lighting the fluorescent lamp between both ends of the fluorescent lamp, and after that, when the fluorescent lamp is started and lit and the AC voltage is stabilized, the AC voltage is applied to the power supply circuit as a DC voltage. A wireless transmission / reception device, characterized in that an operation of converting to 2. The control circuit turns off or blinks the fluorescent lamp by interrupting or intermittently applying AC voltage between both ends of the fluorescent lamp when wireless transmission / reception is disabled. Wireless transceiver.