JP2009230949A - Lighting device - Google Patents

Abstract

【Task】
Provided is a lighting device that can be switched between lighting modes with a power switch and is fixed to a desired dimming level and is easy to use.
[Solution]
The lighting device includes a first lighting circuit OC for lighting the discharge lamp DL, a second lighting circuit SC for lighting the safety light SL, and a control circuit CC for controlling each lighting circuit. Dimming control means for dimming and lighting the discharge lamp at a desired dimming level, lighting mode switching means for switching the lighting mode of all light of the discharge lamp, tuning light and safety light, lighting mode before turning off and its dimming Lighting mode storage means for storing the level, and when the OFF time of the power switch is greater than or equal to a predetermined value, the discharge lamp or safety lamp is lit in the lighting mode and dimming level before turning off, and when it is less than the predetermined value The mode switching means includes a determination means for switching the discharge lamp and the security lamp from the lighting mode before turning off to the next lighting mode.
[Selection] Figure 1

Description

  The present invention relates to a lighting device capable of dimming.

  A remote control receiver is attached to a lighting fixture equipped with a dimmable discharge lamp lighting device, and the discharge lamp is lit at the desired dimming level by operating a remote control transmitter equipped with a dimming level up switch and down switch. A discharge lamp lighting device configured to be made is known (for example, see Patent Document 1).

  In addition, a lighting device is known in which the lighting mode is switched in the order of all light of the discharge lamp, tuning light, and safety light by turning on a power switch such as a wall switch for a short time and then turning on (for example, Patent Documents). 2).

Japanese Patent Application Laid-Open No. 06-075667 Japanese Patent No. 3214622

  In a lighting device in which the lighting mode is switched by turning the conventional power switch off for a short time and then turning it on, even if a lighting fixture as described in Patent Document 1 is used, dimming that can be switched by the power switch The dimming level in the lighting mode is fixed to so-called memory dimming.

  However, in actual indoor lighting, when used in the normal dimming lighting mode, it is relatively often used while being fixed at a dimming level according to the user's preference. In the conventional technique, it is necessary to set the dimming degree of the main light source such as the discharge lamp to a desired level every time it is turned on, so that the setting operation is troublesome and inconvenient.

  It is an object of the present invention to provide a lighting device that can be switched between lighting modes with a power switch and is fixed to a desired dimming level according to the user's preference and easy to use.

  A lighting device of a first invention includes: a first lighting circuit that lights a main light source; a second lighting circuit that lights an auxiliary light source; and a control circuit that controls the first and second lighting circuits. The control circuit controls at least the first lighting circuit to dimm and light the main light source at a desired dimming level, and includes a plurality of types including all light of the main light source, tuning light, and auxiliary light source. The lighting mode switching means for switching the lighting modes in a predetermined order, the lighting mode storage means for storing the lighting mode before turning off and its dimming level, and the OFF time of a power switch such as a wall switch is less than a predetermined value When it is above a predetermined value, at least the main light source or auxiliary light source is turned on at the stored lighting mode and dimming level before turning off. When the OFF time is less than the predetermined value, the lighting mode is turned on. And a main light source and the auxiliary light source from the lighting mode before turning off the switching means and a determining means for shifting to the next lighting mode; is characterized by.

  The first aspect allows the following aspects.

  First, the first lighting circuit will be described. The first lighting circuit is circuit means for lighting a main light source such as a discharge lamp or a light emitting diode, but the main light source can be lighted in any desired manner of all light and dimming. Note that the total light generally refers to when the main light source is turned on with rated power, but in the present invention, it refers to when the main light source is turned on with maximum power within a set range. In addition, dimming means when lighting is performed with less power than in the case of all light. Therefore, at the time of dimming lighting, the brightness of the light emission of the main light source is lower than that at the time of all light lighting.

  Further, the first lighting circuit, as a dimming lighting mode, sets the dimming level, that is, the brightness level at the time of dimming within a predetermined range that is set in advance, for example, up to 50% of the total light. It is configured to be able to. A first lighting circuit and a control circuit to be described later are configured so that the dimming level can be continuously changed as desired, and the remote controller can be operated, for example, a down switch or an up switch. When the desired dimming level is reached while changing the level continuously or step by step, the dimming level changing operation is stopped and the dimming level at that time is stored. It becomes easy. Further, a remote controller or the like can be configured so that memory dimming in which the dimming level is set to a predetermined value, for example, 70% in advance, can be selected.

  Further, the specific circuit configuration for lighting the main light source is not particularly limited in the first lighting circuit, but it is easy to control, has high luminous efficiency, does not flicker in brightness, and can be started immediately. When the main light source is a discharge lamp or the like, a circuit configuration that performs high-frequency lighting is preferable. In this case, it is convenient to use an inverter circuit to generate a high frequency voltage.

  When the discharge lamp is dimmed, the power supplied from the first lighting circuit to the discharge lamp may be reduced. Therefore, in order to change the dimming level, it is only necessary to change the degree of reduction of the electric power supplied to the discharge lamp by the control circuit, which will be described later, with respect to the electric power during all-light lighting. In order to reduce the electric power supplied to the discharge lamp, the output voltage of the first lighting circuit may be reduced or / and the frequency may be changed. In the latter, the ballast disposed in the load circuit is generally constituted by reactance such as an inductor, and the value of the reactance changes according to the frequency. Therefore, the reactance is thrown into the discharge lamp by changing the frequency. The power can be changed.

  A preferable configuration for reducing the output voltage of the first lighting circuit is to reduce the DC input voltage of the inverter circuit. For example, a circuit having a DC voltage adjustment function such as a chopper circuit may be provided on the input side of the inverter circuit, that is, in the DC power supply, and control may be performed by a control circuit described later so as to generate the output voltage. Then, the output voltage of the inverter circuit changes correspondingly according to the input voltage. The chopper circuit can be appropriately selected from known chopper circuits such as a step-up chopper and a step-down chopper based on the correlation between the DC power supply voltage and the required DC output voltage.

  The lighting circuit can be configured not to be feedback-controlled during normal lighting, that is, all-light lighting and dimming lighting. As a result, the circuit can be simplified. In this case, the oscillation frequency of the inverter circuit can be made constant. However, if desired, it is also possible to illuminate using both the output voltage control and frequency control of the lighting circuit. In addition, frequency control and / or output voltage can be changed by a control circuit in order to preheat the filament electrode of the discharge lamp and apply a required voltage when starting.

  When an inverter circuit is used, the circuit system can be freely selected. However, a half-bridge inverter is simple in circuit configuration and easy to miniaturize and can be obtained at a relatively low cost.

  Furthermore, the first lighting circuit includes a load circuit. The load circuit provides ballast action for the discharge lamp and also adjusts the voltage of the output voltage waveform of the inverter circuit to a sine wave, making it easier to apply the starting voltage by controlling the frequency when starting the discharge lamp. Perform the action. For this purpose, the load circuit includes a resonance circuit. The resonant lamp is applied, and the discharge lamp is connected to the load circuit so as to be connected in series with the ballast.

  Furthermore, the first lighting circuit is connected to the low-frequency AC power source through a power switch such as a wall switch, but it may be in a state in which the power supply during lighting of the discharge lamp and lighting of the safety lamp are connected. In this case, the drive signal may be stopped without being supplied to the inverter circuit and the boost chopper of the DC power supply.

  Next, the second lighting circuit will be described. The second lighting circuit is circuit means for lighting an auxiliary light source such as a security light. The auxiliary light source functions as a so-called night light, and it is preferable to use a light source that is turned on with low power, such as a small incandescent bulb or a light emitting diode. And in order to blink an auxiliary light source, it is preferable to connect to a low frequency alternating current power supply through an on-off switch in addition to a power switch. The open / close switch is controlled by a control circuit described later.

  When the auxiliary light source is configured so that a plurality of dimming levels can be selectively set, for example, a variable voltage circuit is provided in the second lighting circuit, and the security lamp is turned on via the variable voltage circuit. Can be configured.

  Next, the control circuit will be described. The control circuit has drive signal generation, calculation, and storage functions, and includes a dimming control means, a lighting mode switching means, a lighting mode storage means, and a determination means that are configured using these functions. The second lighting circuit is controlled.

  The dimming control means controls the first lighting circuit so that the electric power input from the first lighting circuit to the main light source is dimmed with a lower power than when all the lights are turned on. Therefore, for example, the frequency of the drive signal supplied to the switching element of the inverter circuit is increased to a preprogrammed value so as to correspond to a desired dimming level, or a DC voltage adjustment function such as a chopper circuit in a DC power supply is provided. The drive signal supplied to the switching element of the circuit can be controlled so as to reduce the on-duty.

  Further, the dimming control means can be configured to control the second lighting circuit as desired so that a plurality of dimming levels can be selectively set for the auxiliary light source. That is, in this aspect, for example, when a lighting mode switching means to be described later switches the lighting mode to the safety light, a plurality of output voltages are output to the variable voltage circuit disposed in the second lighting circuit. A control signal may be sent by the dimming control means so as to correspond to lighting at the dimming level. The dimming level set for the auxiliary light source is stored and fixed by the control circuit until it is reset next time.

  The lighting mode switching means is means for switching a plurality of types of lighting modes including all light of the main light source, tuning light, and auxiliary light source in a predetermined order. For example, it is switched so that the order of all light → light control → auxiliary light source is repeatedly circulated. And a lighting mode is switched according to the determination result in the determination means mentioned later. For example, if the lighting mode at the time of the previous ON is all light, switching is performed to light control in the next order of light control. Hereinafter, the lighting mode is sequentially switched to the next order. The dimming lighting is performed at the stored level.

  The lighting mode storage means is means for storing the lighting mode and the dimming level when the power switch is turned on. Although the timing to store is not particularly limited, for example, it can be configured to turn off after being stored when turned off. The stored previous lighting mode data can be used as the lighting mode when the lighting mode switching means is turned on last time.

  The determination means is a means for determining whether the power OFF time is less than a predetermined value or more, and when it is less than the predetermined value, the lighting mode switching means is operated. Further, when it is more than that, the discharge lamp or the security lamp is turned on in the previous lighting mode and dimming level stored in the lighting mode storage means.

  A means for changing the light control level will be described. In the present invention, the means for changing the dimming level is not particularly limited. However, the dimming level is preferably made variable by operating a remote controller. The remote control includes a remote control device and a remote control receiver. The remote control is generally a wireless system, but may be a wired system if desired. In the case of a wireless system, infrared communication is generally used as a communication medium, but various known media such as radio waves can also be used as a communication medium.

  The remote controller is a means to be operated when switching the operation of the discharge lamp. The remote controller is operated by the user at a distance from the luminaire, and at least selectively operates all-light lighting, dimming lighting and extinguishing. can do. In the case of dimming, the level can be set to be adjustable according to the user's preference. For this purpose, an operation switch for turning on all light, turning on and off the light, and an up switch and a down switch for changing the light control level can be provided.

  The remote control receiver is disposed on the lighting fixture side, receives a remote control signal modulated by the operation signal transmitted from the remote control operator, demodulates it, and is input to the control circuit. For this reason, the remote control receiver is disposed at a position where at least the receiving unit easily receives the remote control signal of the lighting fixture, for example, on the lower surface side.

  A discharge lamp lighting device according to a second invention comprises: a first lighting circuit for lighting a main light source; a second lighting circuit for lighting an auxiliary light source; a control circuit for controlling the first and second lighting circuits; The control circuit sets a dimming control means for enabling at least a main light source to be dimmed at a desired dimming level within a predetermined range, and an arbitrary dimming level among the dimming levels within the predetermined range. A dimming level setting means, a lighting mode switching means for switching a plurality of types of lighting modes including a dimming level set by the all light of the main light source, a dimming level set by the dimming level setting means, and an auxiliary light source in a predetermined order; The lighting mode storage means for storing the lighting mode before turning off, and whether the OFF time of a power switch such as a wall switch is less than or equal to a predetermined value is determined. Previous lighting mode The main light source or auxiliary light source is turned on at the dimming level set by the dimming level setting means, and when the OFF time is less than the predetermined value, the main light source and auxiliary light source are switched from the lighting mode before turning off to the lighting mode switching means. And determining means for switching to the lighting mode.

  The second invention differs from the first invention in the following points. That is, the lighting mode storage means stores the dimming level set by the dimming level setting means when the current lighting mode and the current lighting mode are dimming lighting. When it is determined that the OFF time of the power switch is equal to or greater than the predetermined value, the determination means turns on at the stored lighting mode and the dimming level set by the dimming level setting means when it is dimmed. .

  The dimming level setting means is a means for setting the dimming level by the user or manufacturer. For example, a dedicated switch can be provided as memory dimming for dimming level setting means in remote control means such as a remote controller.

  Therefore, when the user operates the dedicated switch, the lighting mode is switched to dimming at a predetermined dimming level. If the power switch is operated and the light is turned off while the predetermined level of dimming lighting is being performed, the dimming as the lighting mode at that time and the predetermined dimming level are stored in the lighting mode storage means.

  Next, when the power switch is turned on for a predetermined time or more and the OFF time before being turned on is a predetermined time or more, the main light source is turned on in the stored dimming lighting mode and the predetermined dimming level.

  In the second invention, the configuration and operation other than those described above are allowed to be the modes described in the first invention.

  According to the first invention, the control circuit includes a dimming control means for enabling dimming at least at the main light source at a desired dimming level within a predetermined range, and a plurality of light sources including all light of the main light source, tuning light, and auxiliary light source. Is the lighting mode switching means for switching various lighting modes in a predetermined order, the lighting mode storage means for storing the lighting mode before dimming and the dimming level, and the OFF time of a power switch such as a wall switch is less than a predetermined value? It is determined whether or not it is above, and when the value is equal to or greater than the predetermined value, the main light source is turned on in the all-light lighting mode, and the extinction stored when the lighting mode switching means switches to the dimming lighting mode next time. The dimming lights at the previous dimming level, and when the OFF time is less than the predetermined value, the lighting mode switching means switches the main light source and auxiliary light source from the lighting mode before turning off to the next lighting mode. To provide a lighting device that can be switched between lighting modes with a power switch and is easy to use by being fixed at a desired dimming level according to the user's preference each time. Can do.

  According to the second aspect of the invention, the control circuit includes at least a main light source capable of dimming at a desired dimming level within a predetermined range, and any dimming level among the dimming levels within the predetermined range. A dimming level setting means for setting a level, and a lighting mode for switching a plurality of lighting modes including a dimming level set by the all light of the main light source, a dimming level set by the dimming level setting means, and an auxiliary light source in a predetermined order The switching means, the lighting mode storage means for storing the lighting mode before turning off, and whether the OFF time of a power switch such as a wall switch is less than or equal to a predetermined value are stored. The discharge lamp or the security lamp is turned on at the lighting mode before turning off and the dimming level set by the dimming level setting means, and when the OFF time is less than a predetermined value, the main light source is supplied to the lighting mode switching means. And a determination means for switching the auxiliary light source from the lighting mode before turning off to the next lighting mode, so that the lighting mode can be switched with the power switch and the desired dimming level according to the user's preference It is possible to provide a lighting device that is easy to use by being fixed each time.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  1 to 3 show a first embodiment for carrying out the lighting device of the present invention, FIG. 1 is a circuit diagram of a lighting device arranged on the side of a lighting fixture, and FIG. 2 is a schematic diagram of the lighting fixture and a remote control. FIG. 3 is a flowchart of the control operation in the control circuit when the wall switch is turned on and off.

  As shown in FIGS. 1 and 2, the lighting device includes a first lighting circuit OC, a second lighting circuit SC, a remote controller RC, and a control circuit CC, and includes a discharge lamp DL as a main light source and an auxiliary light source. The security light SL is configured to selectively blink by the wall switch WS.

  The first lighting circuit OC includes a DC power source DC and a main circuit MC, and lights a discharge lamp DL connected thereto. Then, the low-frequency AC power supply AC is received via the wall switch WS and the discharge lamp DL is turned on at a high frequency.

  The DC power source DC can be constituted by a rectifier circuit, a step-up chopper, and the like, and serves as a DC input power source for a main circuit MC described later. For example, a bridge-type full-wave rectifier circuit can be used as the rectifier circuit, and its input terminal is connected to the low-frequency AC power supply AC. A DC voltage having a full-wave rectified waveform is obtained from the output end. The step-up chopper is an active filter having a known circuit configuration, although illustration of internal circuit connections is omitted. Since a boosted DC output voltage proportional to the on-duty of the drive signal is obtained, the DC output voltage can be changed by changing the on-duty.

  The main circuit MC is composed of an inverter circuit and a load circuit. As the inverter circuit, a half-bridge type inverter circuit including a pair of switching elements connected in series between the output ends of the DC power supply DC is preferable because the circuit configuration is simple, and a rectangular wave is formed from both ends of the second switching element. The high frequency voltage is output.

  The load circuit is composed of a series circuit of a DC cut capacitor, an inductor, and a resonance capacitor, and is conductively connected between the output terminals of the inverter circuit. However, no DC component flows into the load circuit due to the DC cut capacitor. The inductor and the resonant capacitor C3 form a series resonant circuit.

  The discharge lamp DL is composed of a fluorescent lamp, and is connected in parallel to both ends of the resonance capacitor of the load circuit in the first lighting circuit OC, and a pair of filament electrodes are inserted in series in the load circuit LC. Then, when a drive signal whose frequency is controlled as required from a drive signal generating means DSG of the control circuit CC described later is supplied to the inverter circuit, the filament electrode is preheated, started and lit. In addition, lighting can be switched to all-light and dimming lighting modes, and the dimming can be set to any desired level within a predetermined range.

  The second lighting circuit SC is connected in parallel with the first lighting circuit OC and is energized by receiving the low-frequency AC power supply AC via the wall switch WS. And it is comprised by the series circuit of the security light SL and opening / closing switch SW as an auxiliary light source. The security light SL is an incandescent bulb having a rated power of about 5 W, for example. The open / close switch SW is controlled by control from a control circuit CC, which will be described later, and blinks the safety light SL.

  The control circuit CC includes a microcomputer μ-Com and a drive signal generation circuit DSG, and has dimming control means, lighting mode switching means, lighting mode storage means, and determination means. The microcomputer μ-Com including the drive signal generation circuit DSG can take charge of the above functions. Further, the drive signal generation circuit DSG can be configured to supply a drive signal also to the boost chopper and the like when the boost chopper and the like are used for the DC power source DC.

  The dimming control means controls the frequency and on-duty of the drive signal supplied to the inverter circuit of the first lighting circuit OC and / or the DC power source DC, and the DC output voltage such as the oscillation frequency of the inverter circuit and the boost chopper. As necessary, the operation of the discharge lamp DL is selectively controlled in all lighting and dimming modes.

  As described later, the lighting mode switching means sequentially switches the lighting modes of the discharge lamp DL and the safety lamp SL in the order of all light and dimming of the discharge lamp DL and lighting of the safety lamp SL in cooperation with the determination means.

  The lighting mode storage means stores at least the lighting mode and the dimming level being executed as shown in FIG. That is, when the wall switch WS is turned off, the lighting mode storage means of the control circuit CC stores the lighting mode and the dimming level.

  When the wall switch WS changes from the OFF state to the ON state, the determination unit determines whether or not the length of the OFF time is less than a predetermined value and the previous lighting mode.

  Each of the above means emphasizes and performs the following control operation. That is, as shown in FIG. 3, the control circuit CC monitors the change in the state of the power supply by the wall switch WS, and determines the length of the OFF time when the wall switch WS changes from the OFF state to the ON state. . And, when the OFF time is less than the predetermined value of 1.5 seconds, if the lighting mode before the previous turn-off is all the light of the discharge lamp DL (Yes), the lighting mode is switched to dimming and stored. Set the level dimming. If it is not all light (No), the presence / absence of dimming is next determined. If dimming (Yes), the lighting mode is switched to the safety light and the safety light SL is turned on. If the light is not dimmed (No), the lighting mode is switched to all light to turn on all light. When the OFF time is longer than the predetermined value of 1.5 seconds, if the lighting mode and dimming before the last turn-off, the dimming level at that time is set and the discharge lamp DL or the security lamp SL is turned on. To do.

  The remote controller RC includes a remote controller transmitter RT and a remote controller receiver RR, and the remote controller receiver RR is disposed on the lighting fixture side. The remote control receiver RR includes an infrared light receiver, a demodulation circuit, an amplifier, and the like, and controls and inputs the received operation signal to the control circuit CC.

  As shown in FIG. 2, the lighting fixture 10 equipped with the lighting device of the present invention includes a lighting fixture body 11, a discharge lamp lighting device LPC, a remote control receiver RR, and a discharge lamp DL. The remote control receiver RT is placed at a position separated from the lighting fixture 10.

  The luminaire main body 11 is a ceiling-mounted luminaire mainly composed of a base body 11a, a reflector 11b, and a shade 11c. The base 11a has a shallow dish shape and is attached to the lower surface of the ceiling. The reflecting plate 11b covers the lower surface of the base 11a, and the outer surface is a white reflecting surface, and forms a space in which the lighting device LPC and the wiring member are disposed between the reflecting plate 11b and the base 11a. The shade 11c is made of translucent plastics and is detachably attached to the lower surface open end of the base 11a.

  The lighting device LPC has the configuration shown in FIG. And it arrange | positions inside the space which the base | substrate 11a and the reflective surface 11b of the lighting fixture main body 11 form, The high frequency output is supplied to the discharge lamp DL via the socket which is abbreviate | omitting illustration.

  The remote control receiver RR is disposed on the outer surface of the reflecting surface 11b, and is easily disposed to receive an infrared remote control signal transmitted when the remote control transmitter RT is operated from below the lighting fixture 10. That is, the infrared light receiver is attached downward to the reflecting surface 11b so as to face the shade 11b.

  The discharge lamp DL is composed of, for example, an annular fluorescent lamp, and is detachably mounted on the reflecting surface 11b.

  The remote control transmitter RT is used for remote operation when switching the operation of the discharge lamp DL, and includes the all-light switch 12, the dimming switch 13, the up switch 14, the down switch 15, the safety light switch 16 and the extinguishing switch 17. And the corresponding infrared remote control signal is transmitted when these are selectively operated.

When the all-light switch 12 is operated, the discharge lamp DL is switched to all-light lighting. When the dimming switch 13 is operated, the discharge lamp DL is switched to dimming lighting. The dimming switch 13 functions as memory dimming set in advance at a predetermined dimming level, for example, 70%. The up switch 14 is set to the dimming level when the operation is stopped and the dimming level increases when the up switch 14 is operated. The down switch 15 is set to the dimming level when the operation is stopped, and the dimming level is lowered when the down switch 15 is operated. When the safety light switch 16 is operated, a safety light (not shown) is turned on. When the turn-off switch 16 is operated, the discharge lamp DL is switched off. Further, when operated when the security light is on, the safety light is turned off. Next, the operation will be described. In FIG. 1, a low-frequency AC voltage from a low-frequency AC power source AC is converted into a smoothed DC voltage of a desired voltage by a DC power source DC of the first lighting circuit OC and applied to the DC input terminal of the inverter circuit of the main circuit MC. Applied. When the inverter circuit operates with a drive signal supplied from the control circuit CC, a high-frequency voltage is output, and the waveform is shaped by the load circuit and applied between the pair of filament electrodes of the discharge lamp DL. As a result, a filament preheating circuit consisting of a pair of filament electrodes and a resonant capacitor is formed at the time of preheating the filament electrode before starting, so the filament heating current flows and the filament electrode is preheated, and then the frequency is controlled and increased. When a voltage is applied to the discharge lamp DL, the discharge lamp DL starts and lights up.

  The lighting mode of the discharge lamp DL can be operated from either the wall switch WS or the remote control transmitter RT. When operated by the wall switch WS, it is as described above with reference to FIG.

  4 and 5 show a second embodiment for implementing the lighting device of the present invention, FIG. 4 is a front view of the remote control transmitter RT, and FIG. 5 is a control in the control circuit when the wall switch is turned on and off. It is a flowchart of operation | movement. Since the circuit configuration is the same as that shown in FIG. 1, the description will be given with reference to FIG.

  In this embodiment, as shown in FIG. 4, the remote control transmitter RT is provided with a memory switch 18 as a dimming level setting means in addition to the configuration shown in FIG. In the factory side, it is set to light up at a predetermined dimming level when the memory switch 18 is operated, or the user operates the up switch 15 or the down switch 16 to perform a desired dimming level. When the memory switch 18 is operated when the level is reached, the dimming level at that time is stored and set. When the memory switch 18 is operated thereafter, the immediate discharge lamp DL is dimmed and lighted at the set dimming level, so that the operation is simplified. This is called memory dimming.

  Therefore, when the wall switch WS is turned OFF when the discharge lamp DL is lit by memory dimming as shown in FIG. 5, the memory dimming and the dimming level of the current lighting mode are stored by the lighting mode storage means. The Next, when the power is turned on, the length of the previous off time is determined. When the off time is 1.5 seconds or longer, the stored lighting mode (memory dimming) and the dimming level setting means are set in advance. The discharge lamp DL is lit at the adjusted dimming level. Note that when the OFF time of the wall switch WS is less than 1.5 seconds and when the wall switch WS is turned off, the control operation for storing the current lighting mode and dimming level is the same as that in the first embodiment.

  FIG. 6 is a circuit diagram of a discharge lamp lighting device disposed on the lighting fixture side in the third embodiment for implementing the lighting device of the present invention.

  In the present embodiment, the brightness of the security light SL can be arbitrarily selected from a plurality of light control levels. That is, the second lighting circuit SC is connected in parallel with the first lighting circuit OC as shown in FIG. 6 and is energized by receiving the low-frequency AC power supply AC via the wall switch WS. A variable voltage circuit BVC is interposed between the safety light SL and the open / close switch SW. The variable voltage circuit BVC can set the dimming level by being controlled by the microcomputer μ-Com of the control circuit CC and changing its output voltage.

  Then, after operating the safety light switch 13 of the remote control transmitter RT to switch to the safety light SL and then operating the up switch 14 or the down switch 15 to select a desired brightness, the safety light SL will be switched on thereafter. The dimming degree can be fixed to a set value.

The circuit diagram of the discharge lamp lighting device arrange | positioned at the lighting fixture side in the 1st form for implementing the lighting device of this invention Similarly, schematics of lighting fixtures and remote control Similarly, flowchart of control operation in control circuit when wall switch is ON / OFF The front view of the remote control transmitter in the 2nd form for carrying out the lighting device of the present invention Similarly, flowchart of control operation in control circuit when wall switch is ON / OFF The circuit diagram of the discharge lamp lighting device arrange | positioned at the lighting fixture side in the 3rd form for implementing the lighting device of this invention

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Lighting fixture, 11 ... Lighting fixture main body, 12 ... All-light switch, 13 ... Dimming switch, 14 up switch, 15 ... Down switch, 16 ... Safety light switch, 17 ... Light-off switch, 18 ... Memory switch, CC ... Control circuit, DL ... discharge lamp, DSG ... drive signal generation circuit, LOC ... discharge lamp lighting device, OC ... first lighting circuit, RC ... remote control, RR ... remote control receiver, RT ... remote control transmitter, SC ... second Lighting circuit, SL ... Safety light, SW ... Open / close switch, WS ... Wall switch, μ-Com ... Microcomputer

Claims (4)

A first lighting circuit for lighting the main light source;
A second lighting circuit for lighting the auxiliary light source;
A control circuit for controlling the first and second lighting circuits;
Comprising
The control circuit controls at least the first lighting circuit to dim and light the main light source at a desired dimming level, and a plurality of types of lighting including all light of the main light source, tuning light, and security light The lighting mode switching means for switching the modes in a predetermined order, the lighting mode storage means for storing the lighting mode before turning off and its dimming level, and the OFF time of a power switch such as a wall switch is less than a predetermined value or more The main light source or auxiliary light source is turned on at the stored lighting mode and dimming level before turning off when it is greater than or equal to a predetermined value, and when the OFF time is less than the predetermined value, the lighting mode switching means Determination means for switching the main light source and the auxiliary light source from the lighting mode before turning off to the next lighting mode;
A lighting device characterized by that. A first lighting circuit for lighting the main light source;
A second lighting circuit for lighting the auxiliary light source;
A control circuit for controlling the first and second lighting circuits;
Comprising
The control circuit includes a dimming control unit that allows at least a main light source to be dimmed at a desired dimming level within a predetermined range, and a dimming level setting that sets an arbitrary dimming level among the dimming levels within the predetermined range A lighting mode switching means for switching a plurality of lighting modes including a total light of the main light source, a dimming level set by the dimming level setting means, and an auxiliary light source in a predetermined order; The lighting mode storage means for storing the lighting mode and whether the OFF time of the power switch such as the wall switch is less than or equal to the predetermined value is determined. The main light source or auxiliary light source is turned on at the dimming level set by the dimming level setting means, and when the OFF time is less than a predetermined value, the main light source and auxiliary light source are not turned off to the lighting mode switching means. And a determination unit for shifting to the next lighting mode from the lighting mode;
A lighting device characterized by that. The dimming control means can select the dimming level of the arcuate light source;
The lighting mode storage means also stores the dimming level before the auxiliary light source is turned off;
The lighting device according to claim 1 or 2, wherein   The lighting device according to any one of claims 1 to 3, further comprising a remote controller for setting a desired dimming level of the main light source.

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