JP2004039299A - Lighting device and lighting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a size and a cost of a lighting device equipped in a lighting system. <P>SOLUTION: An input port 28 is used in common to read respective outputs from a pull-switch circuit 23, and from a pull wall switch circuit 22, in a microcomputer 27 equipped in the lighting system. In the microcomputer 27, the number of ports is reduced by outputting a switching signal for conducting switching among four kinds of switching modes, as a digital signal of two bits, from output parts 29 and 30. The lighting device 5 provided with the inexpensive and small-sized microcomputer 27 of 6 of I/O number (8 pin) is constituted by this manner. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device and a lighting device capable of switching a lighting state of a lamp by, for example, opening and closing a switch.
[0002]
2. Description of the Related Art Conventionally, an illuminating device has a bean ball, which is a nightlight, and a main illumination lamp capable of dimming brightness step by step. 2. Description of the Related Art A device that can switch between different lighting modes (illumination states) is known.
[0003]
That is, as shown in FIGS. 5 and 6, the lighting device 51 included in the conventional lighting device includes lighting lighting circuits 63 and 64 which are supplied with power from the commercial AC power supply Vs and energize the fluorescent lamp 57 and the bean ball 58. A lighting device 65 and a bead ball lighting device (a bean ball ON / OFF) 66, a lighting state of the fluorescent lamp 57 and a bead ball 58, that is, a fluorescent lamp ON / OFF circuit 68 for switching the lighting mode, and a fluorescent lamp full light / dimming A lighting mode switching circuit having a circuit 69; a control unit power supply circuit 71 for supplying power from the commercial AC power supply Vs to the lighting device 65 and the bead ball lighting device 66; A pull wall switch circuit 72 for outputting a corresponding signal, a pull switch circuit 73 for detecting an open / close state of the pull switch and outputting a signal corresponding to the open / close state, and a remote control device A remote control signal receiving circuit 74 for receiving these operation signals, a remote control reception sound circuit 75 for generating a reception sound when the operation signal is received by the remote control signal reception circuit 74, and a plurality of lighting devices. A remote control channel switch circuit 76 for switching all remote operations, and a microcomputer 77 (hereinafter, referred to as a “microcomputer”) for inputting and outputting signals to and from each of the above circuits and for controlling the respective circuits in an integrated manner. ing.
[0004]
The control unit power supply circuit 71 includes a bridge circuit including diodes D4, D5, D6, and D7, Zener diodes D2 and D3, capacitors C1, C2, C3, and C4, resistors R7, R8, R9, R10, and R11, and a transistor Q3. It has. The pull wall switch circuit 72 can generate a zero-cross signal synchronized with the power supply full-wave rectified waveform output from the control unit power supply circuit 21, and can generate a diode D8, capacitors C5 and C6, and resistors R13, R14, and R15. , R16, R17, and a transistor Q4.
[0005]
The fluorescent lamp ON / OFF circuit 68 includes resistors R1, R3, R5, and a transistor Q1. The fluorescent lamp all-light / dimming circuit 69 includes resistors R2, R4, R6, and a transistor Q2. The microcomputer 77 includes a CPU, a ROM, a RAM, and the like, and stores a program in the ROM and various data in the RAM. The microcomputer 77 performs arithmetic processing on data input from each input port by the CPU based on these programs and various data, and outputs the arithmetic result to the fluorescent lamp ON / OFF circuit 68 and the fluorescent lamp all-light / dimming circuit 69. , A bean ball lighting device (a bean ball ON / OFF) 66.
[0006]
However, in such lighting devices, cost reduction and downsizing are constantly being demanded, and there is an increasing demand for developing a new lighting device in consideration of this point. .
However, in the conventional lighting device 51 configured as described above, since it is necessary to create four kinds of illumination states by an instantaneous opening / closing operation by a wall switch or an opening / closing operation of a pull switch, as shown in FIG. The microcomputer 77 is provided with two input ports 52 and 53 to which output signals of the switch circuit 72 and the pull switch circuit 73 are respectively input. Further, in the conventional lighting device 51, based on the input signals from the input ports 52 and 53, three switching signals for switching the lighting lighting mode while switching the switches SW 1, 2 and 3 of the microcomputer 77 are output. Output ports 54, 55 and 56 were provided.
[0007]
Therefore, the present invention has been made to solve the above-described problems, and has as its object to provide a lighting device and a lighting device which can achieve miniaturization and cost reduction of the device.
[0008]
In order to achieve the above object, a lighting device according to the present invention comprises a lighting circuit which is powered by an AC power supply and energizes a lamp; and a lighting circuit between the AC power supply and the lighting circuit. A first switch interposed and connected to be able to supply power to the lighting circuit; a second switch interposed between the first switch and the lighting circuit; opening and closing the first switch And a first detection circuit for outputting a first open / close signal corresponding to the open / closed state; and detecting the open / closed state of the second switch and outputting a second open / close signal corresponding to the open / closed state. A second detection circuit; an input terminal to which the respective opening / closing signals respectively output from the first and second detection circuits are added and input; Lighting mode switching to switch the lighting state of Characterized by comprising a; and a microcomputer for generating a signal.
[0009]
In this invention and the following inventions, the definitions and technical meanings of the terms are as follows unless otherwise specified.
Examples of the lighting circuit include a high-frequency lighting circuit and a ballast using a core and a coil, and are not particularly limited.
The lamp may be any of an incandescent lamp, a low-pressure discharge lamp, a high-pressure discharge lamp, and the like. Further, the lamp includes not only a lamp for main lighting but also auxiliary lighting such as a nightlight.
The lighting state is, for example, various lighting modes such as, for example, all-light control of the main lighting lamp, dimming, and simultaneous turning off of the main lighting lamp, such as turning on the nightlight and turning off the nightlight.
[0010]
In the lighting device according to the invention, each open / close signal when the first switch or the second switch is operated is taken into the microcomputer from a single input terminal. That is, by mounting a small and inexpensive microcomputer, the lighting device can be reduced in size and cost.
[0011]
Further, in the lighting device of the present invention, the microcomputer logically outputs the lighting mode switching signal as a 2-bit digital signal so that the lighting state can be switched to four types of lighting modes. 2 is further provided.
[0012]
According to the lighting device of the present invention, the switching signal for switching the lighting mode to four types is output as a 2-bit digital signal from the two output terminals of the microcomputer. In addition, the size and cost of the apparatus can be reduced.
[0013]
Further, a lighting device of the present invention includes: any one of the lighting devices described above; and a lighting fixture body to which the lamp to be lighted by the lighting device is attached.
[0014]
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a diagram schematically showing a lighting device according to an embodiment of the present invention, FIG. 2 is a block diagram functionally showing the lighting device, and FIG. 3 is a circuit configuration of some blocks of FIG. FIG.
[0015]
As shown in FIG. 1, in this lighting device 1, a lighting fixture body 4 is suspended by a ceiling socket 3 attached to a ceiling 2. The lighting fixture body 4 has a built-in lighting device 5, and the lighting device 5 is connected to a commercial AC power supply Vs via a wall switch 6 attached to a wall so as to be able to supply power. A fluorescent lamp 7 and a bead ball 8 are accommodated in the lighting fixture body 4, and are each urged by the lighting device 5. Further, a pull switch 11 to which a drawstring 10 is attached is provided in the lighting fixture body 4. The lighting device 1 includes a remote control device 12, and by operating each operation button provided on the remote control device 12, the lighting state of the fluorescent lamp 7 and the bean ball 8 can be remotely controlled. .
[0016]
As shown in FIGS. 2 and 3, the lighting device 5 includes illumination lighting circuits 13 and 14 as lighting circuits that are supplied with the commercial AC power supply Vs and energize the fluorescent lamp 7 and the bead 8. The lighting state of the lamp 15 and the bead ball lighting device 16 and the fluorescent lamp 7 and the bead ball 8, that is, the bean ball ON / OFF circuit 17, the fluorescent lamp ON / OFF circuit 18 for switching the lighting mode, and the fluorescent lamp full light / dimming A lighting mode switching circuit 20 having a circuit 19; a control unit power supply circuit 21 for supplying power to the lighting device 15 and the bead ball lighting device 16 from a commercial AC power supply Vs; A pull wall switch circuit (zero cross signal circuit) 22 that outputs a signal corresponding to the state, and a pull switch circuit that detects the open / close state of the pull switch 11 and outputs a signal corresponding to the open / close state. 23, a remote control signal reception circuit 24 for receiving an operation signal from the remote control device 12, a remote control reception sound circuit 25 for generating a reception sound when the operation signal is received by the remote control signal reception circuit 24, A remote control channel switch circuit 26 for switching a remote operation to a plurality of lighting devices, and a microcomputer 27 for inputting and outputting signals to and from each of the above-described circuits and for controlling each circuit in an integrated manner are mounted.
[0017]
The control unit power supply circuit 21 includes a bridge circuit including diodes D4, D5, D6, and D7, zener diodes D2 and D3, capacitors C1, C2, C3, and C4, resistors R7, R8, R9, R10, and R11, and a transistor Q3. It has. The pull wall switch circuit 22 can generate a zero-cross signal synchronized with the power supply full-wave rectified waveform output from the control unit power supply circuit 21, and can generate a diode D8, capacitors C5 and C6, and resistors R13, R14, and R15. , R16, R17, and a transistor Q4.
[0018]
The lighting mode switching circuit 20 includes diodes D1, D9, D10, resistors R1, R2, R3, R4, R5, R6, R12, R18, and transistors Q1, Q2, Q5. The microcomputer 27 includes a CPU, a ROM, a RAM, and the like, and stores a program in the ROM and various data in the RAM. The microcomputer 27 performs arithmetic processing on data input from each input port by the CPU based on these programs and various data, and outputs the arithmetic result to the lighting mode switching circuit 20.
[0019]
Here, the switching operation of the lighting mode of the lighting device 5 will be schematically described. For example, in a state where the fluorescent lamp 7 is illuminated with all light, the wall switch 6 is momentarily opened and closed to instantaneously shut off the commercial AC power supply Vs and a subsequent circuit, for example, for 1.5 seconds or less. It becomes. Subsequently, when the lamp is momentarily shut off, the fluorescent lamp 7 is turned off and the bean ball 8 is turned on. Further, when the instantaneous shutoff is performed, the bead ball 8 is turned off, and subsequently, when the instantaneous shutoff is performed, the fluorescent lamp 7 is turned on again with all light. Thus, each time the wall switch 6 is momentarily shut off, the lighting state of the fluorescent lamp 7 and the bead ball 8 is sequentially switched. To completely turn off the fluorescent lamp 7 and the bead ball 8, the wall switch 6 is turned off (open). The lighting state (lighting mode) is sequentially switched as described above by manually turning on / off (closing / opening) the pull switch 11 or operating an operation button with the remote control device 12.
[0020]
Next, the configuration of the lighting device 5 (particularly, the microcomputer 27) of the present embodiment that achieves cost reduction will be described.
First, the conversion of each output signal (open / close signal) of the pull wall switch circuit 22 and the pull switch circuit 23 to one bit will be described.
The pull wall switch circuit 22 is a power supply zero-cross detection circuit as described above, and detects that the power supply is OFF. The microcomputer 27 determines, based on the OFF time, whether the control substantially corresponds to the pull wall switch circuit 22 or the control corresponding to the pull switch circuit 23. That is, in the present embodiment, as shown in FIGS. 2 and 3, (the output portion of) the pull switch circuit 23 as a pull-out circuit (a switch that is short-circuited with the GND line when operated), and the pull-wall switch circuit 22 And the microcomputer 27 (input port 28).
[0021]
That is, normally, when the power is on, a zero-cross signal synchronized with the power supply full-wave rectified waveform is always input to the microcomputer 27. On the other hand, when the power is turned off, the zero cross signal is not detected, and the “H” signal is input to the microcomputer 27. Further, when the pull switch 11 is operated, the zero cross signal is pulled out and the “L” signal is input to the microcomputer 27. The microcomputer 27 adds the output signal of the pulse switch circuit 22 and the output signal of the pull switch circuit 23 and constantly monitors “H” and “L” of the signal input from the input port 28 and their output times. Based on the result, a lighting mode switching signal for switching the lighting state of the fluorescent lamp 7 and the bead ball 8 is generated. The lighting mode switching signal is a 2-bit digital signal logically output from the output ports 29 and 30 via the switches SW1 and SW2.
[0022]
Next, switching control of the lighting mode based on the lighting mode switching signal will be described.
That is, as shown in FIG. 4, when the switch SW1 of the microcomputer 27 is ON (output “L”), the transistor Q1 is turned OFF, and the illumination lighting circuit (ON / OFF) 13 of the lighting device 15 operates to the OFF side. Then, the fluorescent lamp 7 is turned off. When the switch SW1 is OFF (output “H”), the transistor Q1 is turned ON, the illumination lighting circuit (ON / OFF) 13 of the lighting device 15 is turned ON, and the fluorescent lamp 7 is turned on. Here, when the switch SW2 is ON (output “L”), the transistor Q2 is turned OFF, the illumination lighting circuit (all light / dimming) 14 of the lighting device 15 operates to the all light side, and the fluorescent lamp 7 is turned on. It becomes all light. On the other hand, when the switch SW2 is OFF (output “H”), the transistor Q2 is turned ON, and the illumination lighting circuit (all light / dimming) 14 of the lighting device 15 switches the fluorescent lamp 7 to dimming.
[0023]
When the power of the bead ball 8 is turned on, a zero cross signal is supplied to the (bead ball ON / OFF) 16 through the pull wall switch circuit (zero cross detection circuit) 22 through the diode D10, and the bead ball 8 is turned on. On the other hand, in the case of all-light and dimming described above, since the switch SW1 is OFF (output "H"), the transistor Q5 is turned on via the diode D1, and the zero-cross signal, which is a bead ball lighting signal, is pulled out and the bead is turned off. The ball 8 is turned off (OFF).
[0024]
Here, when the fluorescent lamp 7 is OFF, the switch SW1 is ON (output “L”), and therefore, this signal does not turn ON the transistor Q5. Further, when the fluorescent lamp 7 is OFF, the ON / OFF of the switch SW2 switches the ON / OFF of the transistor Q5 to control whether the bean ball 8 is ON or OFF. When the switch SW2 is OFF (output "H"), the transistor Q5 is turned ON via the diode D9, the zero-cross signal is pulled out, and the bead ball 8 is turned off. When the switch SW2 is ON (output “L”), the transistor Q5 is turned OFF, a zero-cross signal is supplied, and the bean ball 8 is turned on.
[0025]
Therefore, in the lighting device 1 of the present embodiment thus configured, the input port (input terminal) of the microcomputer 27 that takes in the output of the pull switch circuit 23 or the pull wall switch circuit 22 is shared (shared), and the conventional device ( The number of input ports is reduced by one as compared with FIG. 5 and FIG. In addition, in the lighting device 1 of the present embodiment, the lighting mode switching signal for switching the lighting mode to four types is output from the microcomputer 27 as a 2-bit digital signal. ) Is reduced by one (from three terminals to two terminals). As a result, in the present embodiment, it is possible to configure the lighting device 5 equipped with the small and inexpensive microcomputer 27 having 6 (8 pins) I / Os. Since the microcomputer 27 is miniaturized, the wiring layout is shortened, and the noise resistance of the microcomputer itself is improved.
[0026]
As described above, the present invention has been specifically described with the embodiments. However, the present invention is not limited to the above-described embodiments, and can be variously modified without departing from the gist thereof. For example, the lighting device 5 including the microcomputer 27 is configured to take in the output signals of the pull switch circuit 23 and the pull wall switch circuit 22 from one input terminal. The lighting device 5 may be configured so that each output signal of the remote control signal receiving circuit 24 and the remote control signal receiving circuit 24 is taken in from one input terminal.
[0027]
As described above, according to the present invention, each open / close signal when the first switch or the second switch is operated is taken into the microcomputer from a single input terminal. A compact and inexpensive lighting device equipped with a computer can be provided. Further, according to the present invention, a switching signal for switching the lighting mode between four types is output as a 2-bit digital signal from two output terminals provided in the microcomputer. It is small and inexpensive, which can reduce the size and cost of the device.
[Brief description of the drawings]
FIG. 1 is a diagram schematically showing a lighting device according to an embodiment of the present invention.
FIG. 2 is a block diagram functionally showing the lighting device of FIG. 1;
FIG. 3 is a diagram showing a part of the block in FIG. 2 in a circuit configuration;
FIG. 4 is a diagram for explaining switching of an illumination state by the illumination device of FIG. 1;
FIG. 5 is a block diagram functionally showing a conventional lighting device.
FIG. 6 is a diagram showing a part of the block of FIG. 5 in a circuit configuration;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Lighting device, 5 ... Lighting device, 6 ... Wall switch, 7 ... Fluorescent lamp 7, 8 ... Bean ball, 11 ... Pull switch, 15 ... Lighting device, 16 ... Bean ball lighting device, 20 ... Lighting mode switching circuit, 22: pull wall switch circuit (zero cross signal circuit), pull switch circuits 23, 27: microcomputer, 28: input port, 29, 30 ... output port.

Claims (3)

A lighting circuit powered by an AC power supply for energizing the lamp;
A first switch interposed between the AC power supply and the lighting circuit and connected to be able to supply power to the lighting circuit;
A second switch interposed between the first switch and the lighting circuit;
A first detection circuit that detects opening and closing of the first switch and outputs a first opening and closing signal corresponding to the opening and closing state;
A second detection circuit that detects opening and closing of the second switch and outputs a second opening and closing signal corresponding to the opening and closing state;
A lighting mode for providing an input terminal to which the respective opening / closing signals respectively output from the first and second detection circuits are added and inputting, and switching a lighting state of the lamp by discriminating a signal input from the input terminal; A microcomputer for generating a switching signal;
A lighting device comprising: The microcomputer further includes first and second output terminals for logically outputting the lighting mode switching signal as a 2-bit digital signal so that the lighting state can be switched to four types of lighting modes. The lighting device according to claim 1, wherein: A lighting device according to claim 1 or 2;
A lighting fixture body to which the lamp to be lighted by the lighting device is attached;
A lighting device, comprising:

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