JP2000315592A - Elevating type lighting system and lighting facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a motor-driven elevator device allowing a lighting fixture requiring maintenance to solely be elevated and lowered upon sensing the lighted condition of a discharge lamp by a lighting circuit. SOLUTION: The arrangement according to the present invention comprises a discharge lamp 2 elevated and lowered by a motor-driven elevation device 3 installed on the stationary side, a lighting fixture consisting of a shade and socket, a discharge lamp lighting device 1 capable of sensing the current or voltage on the secondary side, and a control device 4 for controlling the lighting device 1 and a motor drive unit for elevating and lowering. The lighted condition is sensed by a lighting circuit when the elevation device 3 is to be operated, which enables the lighting fixture requiring maintenance to solely be lowered, and even in the case a plurality of elevation devices are operated, the lighting fixture requiring maintenance is solely elevated and lowered, so that the working easiness and safety can be enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting system capable of raising and lowering a lamp and a lighting system including a control device for controlling a plurality of lighting systems.

[0002]

2. Description of the Related Art In a conventional elevating lighting device, a discharge lamp lighting device and an elevating device are physically and functionally separated from each other. The work was complicated because it was necessary to perform it. For this reason, the discharge lamp may be lowered while the discharge lamp is in a lighting state, and a spark is generated between the contact point of the lamp and the contact point of the fixed part when the lamp is moved up and down when the lamp is moved up and down, and these contact points are damaged. There was a problem.

In order to protect the contacts from being damaged by sparks at the time of such contact and separation, the power supply to the lighting circuit is cut off before the raising and lowering operation of the lamp.
No. 413 (Prior Art 1). This uses a power source for the discharge lamp lighting device and a power source for raising and lowering operation in common, and is intended to protect the contacts by cutting off the current supply to the lighting device when the lamp is raised and lowered.

[0004] Japanese Unexamined Patent Application Publication No. Sho 64-89205 is also known (conventional example 2). Conventional example 2 will be described with reference to FIG. In FIG. 11, the lifting device 111 is
It is composed of a motor M and the like, and has a first contact 112 and a second contact 113 which come and go when the lamp is raised and lowered. The control device 114 has a function of interrupting the supply of electricity to the discharge lamp lighting device 116 by the lifting operation switch 115.

When the descending operation is performed by the elevation operation switch 115, the control device 114 automatically cuts off the power supply to the discharge lamp lighting device, and the discharge lamp 117 is turned off.

[0006]

However, in the prior arts 1 and 2, in order to protect the contacts by sparks at the time of contact of the contacts at the time of elevating, the power supply of the discharge lamp lighting device is automatically turned on when the elevating device is operated. In this case, there is a fear that all the discharge lamps that are turned on are turned off at the time of raising / lowering operation, and the workability and safety are deteriorated.

Further, when several elevating lighting devices are operated collectively, all the discharge lamps are automatically turned off and descended, so that the entire work area is turned off, and there is a problem in workability and safety. .

[0008]

According to a first aspect of the present invention, there is provided a lifting type lighting device, comprising: a motorized lifting device arranged on a fixed side; a lamp having a discharge lamp or the like, which can be raised and lowered by the motorized lifting device; A discharge lamp lighting device capable of stably lighting the electric lamp and detecting a state of the discharge lamp; at the time of a lamp lowering operation during maintenance of the discharge lamp, the discharge lamp lighting device has no load, no lighting state, and abnormal lighting state of the discharge lamp. And a control device capable of controlling to hold the position and lighting of the lamp by permitting the descending when detecting the discharge lamp and prohibiting the descending when the normal lighting state of the discharge lamp is detected.

A liftable illumination device according to a second aspect of the present invention has a motorized lifter and a discharge lamp disposed on a fixed side, and has a lamp that can be moved up and down by the motorized lifter, stably turns on the discharge lamp, and detects the state of the discharge lamp. A discharge lamp lighting device including a possible circuit, a capacitor, and a return switch, and the discharge lamp lighting device detected no load, no lighting state, and abnormal lighting state of the discharge lamp during the lamp lowering operation during maintenance of the discharge lamp. In some cases, when the lamp is allowed to descend after the discharge lamp is de-energized and the lamp is raised after maintenance, the return switch of the discharge lamp lighting device keeps the open state to the lamp fixture position, and after the contact of the contacts, the return switch Can be controlled, and when the normal lighting state of the discharge lamp is detected, control of maintaining the current to the discharge lamp and inhibiting the descending to maintain the position and lighting of the lamp can be performed. That was and a control device.

The discharge lamp lighting device of the liftable lighting device according to the third aspect of the present invention detects the state of the discharge lamp such as normal lighting, non-lighting, no load, abnormal lighting, etc., based on the current on the output side of the lighting circuit. It is characterized by:

According to a fourth aspect of the present invention, there is provided a discharge lamp lighting device for a lifting / lowering lighting device, which detects a state of a discharge lamp such as normal lighting, non-lighting, no load, abnormal lighting, etc., based on a voltage on an output side of a lighting circuit. It is characterized by:

A discharge lamp lighting device for a liftable lighting device according to a fifth aspect of the present invention detects a light output of the discharge lamp by a discharge lamp state detection circuit, so that normal lighting, non-lighting, no load, and abnormal lighting are performed. For example, the state of the discharge lamp is detected.

According to a sixth aspect of the present invention, there is provided a vertically illuminating device.
By detecting the heat generation state of the discharge lamp by a discharge lamp state detection circuit, the state of the discharge lamp such as normal lighting, non-lighting, no load, abnormal lighting, etc. is detected.

In the above invention, the lifting device includes a motor, a drum, a wire, and the like, and has a function of rotating the drum by the motor and raising and lowering the lamp by winding up and down the wire.

Further, as a function of stably lighting the discharge lamp, an electronic ballast, a general type choke coil type or the like cannot be used. The discharge lamp lighting device includes a portion for stably lighting, a discharge lamp state detection unit, and a control device, which may be integrally and separately provided.

The abnormal lighting of the discharge lamp means a lighting state in which discharge lamp current rises, discharge lamp voltage rises, abnormal temperature rise, color change, etc. at the end of the life of the discharge lamp.

According to a seventh aspect of the present invention, there is provided an illumination facility comprising an operation control device for controlling the elevation operation of a plurality of the elevation type illumination devices according to any one of the first to sixth aspects, collectively or in groups. ing.

The lighting equipment according to the invention of claim 8 is a facility such as a gymnasium or the like in which a ceiling is high and lighting equipment needs to be raised and lowered for maintenance; a plurality of lifting and lowering type equipment according to any one of claims 1 to 6 Lighting equipment;

The system includes an operation control device for controlling the elevating operation of a plurality of elevating lighting devices, collectively or in groups.

In the invention according to any one of the first to sixth aspects, when the lifting / lowering operation of the lifting / lowering device is performed, the state of the discharge lamp is detected by the discharge lamp lighting device, and the discharge lamp is in the no-load state or the non-load state. When the lighting state or the abnormal lighting state is detected, the control circuit of the discharge lamp lighting device cuts off the current to the discharge lamp, and then permits the descent of the lifting device. Further, when the normal lighting state of the discharge lamp is detected, the discharge lamp is kept lit as it is, and the descent of the elevating device is prohibited, so that the position of the lamp can be held. By these actions, only the lamps requiring maintenance are automatically detected, the lamps are lowered, and the maintenance work is performed, so that the illuminance of the work area can be secured, and the workability and safety can be improved.

According to the seventh aspect of the present invention, when a plurality of elevating devices are operated collectively or in groups, only discharge lamps requiring maintenance are automatically detected and lowered, and normal lighting without maintenance is required. The discharge lamp in the state maintains the position and lighting of the lamp, without turning off the entire work area,
Maintenance work can be performed.

According to the invention of claim 8, in a maintenance work in a facility where the ceiling is high and the lamp needs to be raised and lowered for maintenance, when the lamps are lowered at once, only the lamps requiring maintenance are lowered. Therefore, workability and safety can be improved.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a block diagram of a first embodiment of the present invention. FIG. 2 is a partial cross-sectional view of the liftable lighting device.

The discharge lamp lighting device 1 has a function of stably lighting the discharge lamp 2, and is mainly composed of an electronic circuit including an inverter and the like. In FIG. 1, a discharge lamp lighting device 1
Is a filter circuit 1-1 for high frequency cut, a rectifier circuit 1
-2, a step-up circuit 1-3 also serving as an active filter, a step-down circuit 1-4 including a step-down chopper for voltage adjustment, and a polarity inversion circuit 1 including a full-bridge type inverter.
5, a discharge lamp state detection circuit 1-7 for detecting the state of the discharge lamp 2 together with a control circuit 1-6 for controlling the operations of the booster circuit 1-3 and the step-down circuit 1-4. here,
The control circuit 1-6 is a circuit such as a microcomputer having a function of taking in and discriminating the result detected by the discharge lamp state detection circuit 1-7 and outputting a signal. The electric lifting / lowering device 3 has a motor M and the like, and is further connected to and lifted off from the lifting / lowering permission contact 5 linked to the control device control circuit 1-6 of the discharge lamp lighting device 1 when the electric lifting / lowering device 3 operates. A first contact 6 and a second contact 7. A lifting switch 8 is provided outside the electric lifting device 3. In this embodiment, the control device 4 includes a control circuit 1-6, a discharge lamp lighting state detection circuit 1-7, and a lift permission contact 5.

In FIG. 2, the lamp 9 includes the discharge lamp 2, the second contact 7, the discharge lamp lighting device 1, and the like. The lamp 9 is connected to a wire 10, and is configured such that a drum 11 is rotated by a motor (not shown) of the electric lifting device 3 so that the drum 11 can be raised and lowered.

The operation of the above embodiment will be described.
When lowering the lamp on the ceiling during maintenance such as replacement of the discharge lamp, when the elevating switch 8 is switched to the lowering command,
When the discharge lamp 2 is not loaded, not lit, or abnormally lit, the discharge lamp state detection circuit 1-7 detects the discharge lamp 2 and the control circuit 1-6 discriminates the chopper switch element of the step-down circuit 1-3. The power supply to the discharge lamp 2 is cut off by turning it off. Then, the control unit 4 receives a signal from the control circuit 1-6.
And the motor M automatically operates to lower the lamp 9. At this time, since the current after the high voltage circuit is cut off, only a small amount of current for operating the electronic circuit flows, and the contacts 6 and 7 are protected. Further, the control circuit 1-6 resets the discharge lamp state circuit 1-7 and the cutoff signal of energization to the discharge lamp by the contact / separation of the contacts 6 and 7, and restores the initial state when the lamp is restored after maintenance is completed. And a configuration that can be used.

Similarly, when the discharge lamp 2 is normally lit when the up / down switch 8 is switched to the down command, the discharge lamp state detection circuit 1-7 detects the discharge lamp 2 and the control circuit 1-6 determines. Then, the power supply to the discharge lamp 2 is maintained by the step-down circuit 1-3. Then, the control device 4 instructs the lift permission contact 5 to be kept open by a signal from the control circuit 1-6, and does not operate the motor M. Therefore, the position of the lamp 9 can be maintained without lowering, and the lighting state can be maintained.

Due to such an operation, when the elevating switch 8 is switched to the descent command, only the lamp 9 in the no-load, non-lighting, or abnormally-lighting state requiring maintenance is lowered after the power supply to the lamp is cut off. The normally lit lamp 9 which does not require maintenance is not lowered while maintaining the lighting.

The stable operation of the discharge lamp is controlled by the control circuit 1-6.
This is performed by controlling the booster circuit 1-3 and the step-down circuit 1-4. In this case, the weight and size of the lighting device can be reduced because the control circuit is also used for control of discharge lamp detection and control of stable lighting.

A second embodiment of the present invention will be described with reference to FIG. The same parts as those in FIG. 1 are denoted by the same reference numerals.

The basic operation of this embodiment is the same as that of the first embodiment, but the feature of this embodiment is that the discharge lamp lighting device 1 includes a return switch 1-8 and a capacitor 1-9. When the lamp 9 is lowered for maintenance, electric charges may be held in the capacitor 1-9, and when the lamp is raised after maintenance is completed, there is a possibility that a spark is generated between the contacts 6 and 7. For this reason, after maintenance is completed by the return switch 1-8, the open state is maintained until the contacts 6 and 7 are securely contacted, and after the lamp 9 is securely returned to the home position, the lamp is returned by the lamp position detection switch or the like. Is detected,
The spark between the contacts 6 and 7 is prevented by turning on the return switch for the first time.

A third embodiment of the present invention will be described with reference to FIG.

FIG. 4 is a block diagram of a lighting equipment provided with an operation control device 12 for raising and lowering a plurality of elevating lighting devices at a time. The same parts as those in FIG. 1 are denoted by the same reference numerals.

The operation of the fourth embodiment will be described.
When the operation controller 12 switches to the descending command, if each of the discharge lamps 2 is in no load, not lit, or abnormally lit, it is determined by the discharge lamp state detection circuit 1-7, The control circuit 1-6 cuts off the power to the discharge lamp 2,
Each control device 4 operates the motor M of the electric lifting device 3 to lower its lamp.

Similarly, when each discharge lamp 2 is normally lit when the operation control device 12 switches to the descending command, it is determined by the discharge lamp state detection circuit 1-7 and the discharge lamp lighting device 1 The energization is maintained, and the motor 4 of the electric lifting device 3 is not operated by the control device 4, and the position of the lamp is maintained without lowering.

Due to such an operation, when the plurality of control operation devices 12 are switched to the descending command, only the lamps in the no-load, non-lighting, and abnormally lighting state requiring maintenance cut off the power supply to the lamps. Lamps that fall down later and are normally lit are not lowered while maintaining lighting. Therefore, only the lamps requiring maintenance are lowered without turning off all the work areas.

FIGS. 5, 6, 7 and 8 show a discharge lamp state detection circuit of the discharge lamp lighting device 1 of the present invention.

FIG. 5 shows that the discharge lamp state detection circuit 1-7 is composed of a current detecting resistor 13, and the current flowing through the discharge lamp 2 causes the discharge lamp 2 to be in a state such as no load, non-lighting, or abnormal lighting. Is detected and determined by the control circuit 1-6. As a result, a voltage applied to the discharge lamp 2 is cut off by the step-down circuit 1-3, and a signal for permitting the descent is sent to the up / down permission contact 5.

FIG. 6 shows that the discharge lamp state detection circuit 1-7 is composed of a voltage detecting voltage dividing resistor 14, and the voltage applied to the discharge lamp 2 causes no discharge, non-lighting, abnormal lighting of the discharge lamp 2, and the like. Is detected by the control circuit 1-6. As a result, a voltage applied to the discharge lamp 2 is cut off by the step-down circuit 1-3, and a signal for permitting the descent is sent to the up / down permission contact 5.

FIG. 7 shows a state in which the discharge lamp state detection circuit 1-7 is constituted by a photodetector 15 such as a photosensor, etc., and detects the light output of the discharge lamp 2 to determine whether the discharge lamp 2 is turned on or not. The control circuit 1-6 detects a state such as no load, no lighting, abnormal lighting, etc. due to a decrease in light output, color abnormality, and the like. As a result, a voltage applied to the discharge lamp 2 is cut off by the step-down circuit 1-3, and a signal for permitting the descent is sent to the up / down permission contact 5.

FIG. 8 shows a state in which the discharge lamp state detecting circuit 1-7 is constituted by a temperature detector 16 such as a thermocouple. A state such as abnormal lighting is detected and determined by the control circuit 1-6. As a result, a voltage applied to the discharge lamp 2 is cut off by the step-down circuit 1-3, and a signal for permitting the descent is sent to the up / down permission contact 5.

FIG. 9 shows a fourth embodiment of the present invention. As described above, the contacts 6 and 7 are provided between the discharge lamp lighting device 1 and the discharge lamp 2 so that the discharge lamp lighting device 1 is not separated when the lamp is moved up and down. A similar operation can be performed.

FIG. 10 shows a case where the ceiling 9 is high and the lamp 9 is used for maintenance.
This is an example in which a lift-type lighting device equipped with a control device for raising and lowering a plurality of units at a time is installed in a facility such as a gymnasium or the like that requires raising and lowering. In this way, even when the lowering operation is performed collectively for each group for maintenance, only the lamps 9 requiring maintenance can be lowered without lowering the normally lit lamps 9 while maintaining lighting.

[0045]

According to the invention as set forth in any one of the first to sixth aspects, the electric lifting / lowering device detects the lighting state of the discharge lamp by the discharge lamp lighting device, and turns off, no load, and abnormal the discharge lamp. Since it is possible to lower lamps requiring maintenance for lighting, it is possible to easily maintain only discharge lamps requiring maintenance, thereby improving workability, safety and economy.

According to the seventh aspect of the present invention, when the plurality of electric hoisting devices are lowered at one time, each electric hoisting device detects the lighting state of the discharge lamp by the discharge lamp lighting device,
Only the lamps that require maintenance such as non-lighting, no-load, and abnormal lighting of the discharge lamp can be lowered, and workability and safety can be improved.

[Brief description of the drawings]

FIG. 1 is a block diagram of a first embodiment of a lifting-type lighting device according to the present invention.

FIG. 2 is a cross-sectional view of a first embodiment of the lifting-type lighting device of the present invention.

FIG. 3 is a block diagram of a second embodiment of the elevation lighting device according to the present invention;

FIG. 4 is a block diagram of a third embodiment of the elevation lighting device according to the present invention.

FIG. 5 is a block diagram of Example 1 of a discharge lamp lighting device of the liftable lighting device according to the present invention.

FIG. 6 is a block diagram of Example 2 of a discharge lamp lighting device of the lifting lighting device according to the present invention.

FIG. 7 is a block diagram of Example 3 of a discharge lamp lighting device of the lifting lighting device of the present invention.

FIG. 8 is a block diagram of Example 4 of a discharge lamp lighting device of the lifting lighting device of the present invention.

FIG. 9 is a block diagram of a fourth embodiment of the elevation lighting device according to the present invention.

FIG. 10 shows an example in which the elevating lighting device and the lighting equipment according to the present invention are installed in a gymnasium or the like in which a ceiling has a high ceiling and a lamp needs to be raised and lowered for maintenance.

FIG. 11 is a block diagram of a conventional example.

[Explanation of symbols]

 1: discharge lamp lighting device 2: discharge lamp 3: electric lifting device 4: control device 5: lifting / lowering permission contact 6: lifting / lowering first contact 7: lifting / lowering second contact 8: lifting / lowering switch 9: lamp 10: wire 11: Drum 12: Operation control device 13: Current detection resistor 14: Voltage detection resistor 15: Photodetector 16: Temperature detector

Continued on the front page (72) Inventor Kazuho Tanaka Toshiba LITEC Co., Ltd. 4-3-1 Higashishinagawa, Shinagawa-ku, Tokyo (72) Inventor Isao Abe 4-3-1 Higashishinagawa, Shinagawa-ku, Tokyo F-term in ITEC Co., Ltd. (reference) 3K082 AA14 AA68 BA12 BA22 BD03 BD04 BD12 BD13 BD26 BD32 FA00

Claims (7)

[Claims] An electric lifting device disposed on a fixed side; a lamp having a discharge lamp or the like which can be raised and lowered by the electric lifting device; a discharge lamp capable of stably lighting the discharge lamp and detecting a state of the discharge lamp. Lighting device; During lamp lowering operation for maintenance of discharge lamp, when the discharge lamp lighting device detects no load, non-lighting state or abnormal lighting state of the discharge lamp, it shuts off the power supply to the discharge lamp and permits lowering. When the normal lighting state of the discharge lamp is detected, the power supply to the discharge lamp is maintained, and
A control device capable of controlling the lamp to keep its position and lighting by prohibiting descent. 2. An electric lifting device arranged on a fixed side; a lamp having a discharge lamp and the like which can be raised and lowered by the electric lifting device; and a circuit capable of stably lighting the discharge lamp and detecting a state of the discharge lamp. A discharge lamp lighting device including a smoothing capacitor as a component and a return switch on the power supply side of the capacitor; and
When the discharge lamp lighting device detects a no-load, non-lighting state, or abnormal lighting state of the discharge lamp, the power supply to the discharge lamp is cut off, the descent is permitted and the return switch is opened, and the lamp is raised after maintenance. In this case, the return switch of the discharge lamp lighting device is kept open to the lamp fixture position, and after the contact of the contacts, the return switch is closed and the discharge lamp is energized when the normal lighting state of the discharge lamp is detected. And a control device capable of controlling to hold the position and lighting of the lamp by prohibiting descending. 3. The discharge lamp lighting device according to claim 1, wherein a state of the discharge lamp such as lighting, non-lighting, no load, abnormal lighting, etc. can be detected by detecting an output side current. Or the lifting type lighting device of 2. 4. The discharge lamp lighting device according to claim 1, wherein the discharge lamp is capable of detecting a lighting state, a non-lighting state, a no-load state, an abnormal lighting state, and the like by detecting a voltage on an output side. Or the lifting type lighting device of 2. 5. The discharge lamp lighting device according to claim 1, wherein a state such as lighting, non-lighting, no load, and abnormal lighting of the discharge lamp can be detected by detecting a light output of the discharge lamp. 1 or 2 elevating lighting devices. 6. The discharge lamp lighting device according to claim 1, wherein the discharge lamp lighting device detects a heat generation state of the discharge lamp, thereby lighting, non-lighting, and no load of the discharge lamp.
3. The up-and-down lighting device according to claim 1, wherein a state such as abnormal lighting can be detected. 7. A lighting installation comprising an operation control device for controlling a plurality of lifting / lowering lighting devices according to any one of claims 1 to 6, collectively or for each group. A facility such as a gymnasium or the like where the ceiling is high and lighting equipment needs to be raised and lowered for maintenance; a plurality of lifting lighting apparatuses according to any one of claims 1 to 6; and a plurality of lifting lighting apparatuses, collectively or And an operation control device for controlling a lifting operation for each group.