JP2002008879A - Method and device for diagnosing service life of fluorescent lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and device for diagnosing service life of a fluorescent lamp capable of finding the service life for replacing the fluorescent lamp lit by an electronic starter. SOLUTION: Cumulative current-carrying time of a fluorescent lamp is measured by a cumulative current-carrying time measurement means 2, and the measured cumulative current-carrying time is compared to predetermined time previously stored in a storage means 3, and when the cumulative current- carrying time reaches the predetermined time, indication that replacement time has come is displayed on an instruction display means 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for diagnosing the life of a fluorescent lamp used in a lighting device such as an elevator.

[0002]

2. Description of the Related Art Conventionally, replacement of a fluorescent lamp is performed, for example, in a fluorescent lamp of a ceiling lighting device used in an elevator car, by previously determining a replacement interval.

[0003]

According to the above-described conventional method of replacing a fluorescent lamp with a replacement interval, depending on the usage environment of the fluorescent lamp, the life of the fluorescent lamp has not reached its life even after the replacement interval, or Because the life of the fluorescent lamp may reach its end before the replacement interval has elapsed, replace the fluorescent lamp that can still be used sufficiently. There was a problem that caused discomfort.

[0004] A first object of the present invention is to provide a life span of a fluorescent lamp which enables the fluorescent lamp to be replaced with a new fluorescent lamp before the fluorescent lamp burns out, regardless of the fluorescent lamp in a different environment. It is to provide a diagnostic method.

[0005] A second object of the present invention is to provide a fluorescent lamp life diagnosing apparatus having a simple structure capable of instructing maintenance personnel who maintain the fluorescent lamp to replace the fluorescent lamp before the fluorescent lamp is turned off. It is in.

[0006]

A first object of the present invention is to provide a method for diagnosing the life of a fluorescent lamp which is turned on by an electronic starter, by measuring the cumulative energizing time of the fluorescent lamp and storing the measured cumulative energizing time in advance. This is achieved by comparing a predetermined time that has been set, and diagnosing the life when the cumulative energization time approaches or becomes equal to the predetermined time.

According to such a method, the fluorescent lamp can be replaced with a new fluorescent lamp before the fluorescent lamp is turned off (burnout).

A second object of the present invention is to provide an apparatus for diagnosing the life of a fluorescent lamp which is turned on by an electronic starter, a means for measuring the cumulative power supply time of the fluorescent lamp, and a storage means for storing the cumulative power supply time. Comparing means for comparing a predetermined time previously stored in the storage means with the cumulative energizing time; and generating a life signal when the cumulative energizing time approaches or equals the predetermined time by the comparing means. It is constituted by at least comprising a life determining means and an instruction display means which operates in response to a life signal from the life determining means and instructs replacement of the fluorescent lamp.

According to such a configuration, a maintenance person who maintains the fluorescent lamp can surely make sure that the fluorescent lamp is not turned on before the fluorescent lamp is turned off.
Fluorescent lamp replacement can be performed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, an illuminating device 1 comprises a fluorescent lamp which is turned on by an electronic starter. Reference numeral 2 denotes a cumulative power-on time measuring means for measuring the cumulative power-on time T of the fluorescent lamp of the lighting device 1; 3 a storage means for storing the cumulative power-on time T measured by the cumulative power-on time measuring means 2;
Is a comparing means for comparing a predetermined time W stored in advance with the accumulated energizing time T.

In FIG. 1, reference numeral 5 denotes a life determining means for outputting a life signal when the comparing means 4 determines that the cumulative energizing time T is close to or equal to a predetermined time W; The instruction display means is operated by the life signal from the determination means 5 to display an instruction to replace the fluorescent lamp. The cumulative power-on time measuring means 2, the storage means 3, the comparing means 4, the life determining means 5 and the instruction display means 6 constitute a fluorescent lamp life diagnosing device 7 used in the lighting device 1.

As a result of various experiments on the life of the fluorescent lamp which is lit by the electronic starter constituting the illuminating device 1, the life is hardly reduced by the number of times of lighting, and the life is determined by the cumulative energizing time. I understood.
That is, a curve X of the lighting start voltage V and the cumulative energizing time T
Is as shown in FIG. Then, when P the lighting start voltage V exceeds the supply voltage V _1, a fluorescent lamp, unlighted (ball out) state, i.e., it can be seen that the life of the fluorescent lamp.

Therefore, the accumulated power supply time 20,000h at the time point P in FIG. 2 is stored in the storage means 3 as the predetermined time W. Then, the cumulative energization time T of the lighting time of the lighting device 1
Is measured by the cumulative energization time measuring means 2 and
The measured cumulative energization time T is stored in the storage means 3. The predetermined time W stored in the storage means 3 and the cumulative energizing time T are constantly compared by the comparing means 4. As a result of the comparison, if the cumulative energizing time T approaches or becomes equal to the predetermined time W, a life signal is input from the life determining means 5 to the instruction display means 6, and the instruction display means 6 is activated to activate the fluorescent light. A lamp replacement instruction is displayed.

FIG. 3 shows the life diagnostic device 7 of the present embodiment.
FIG. 4 is a schematic explanatory diagram when used for an elevator 8. In FIG. 3, reference numeral 9 denotes an elevator car, 10 denotes a remote intelligent diagnostic device for performing various diagnoses of the elevator car 8, 11 denotes a control center, and 12 denotes service bases such as branch offices and sales offices. The control center 11 includes a remote monitoring unit 13 and a central processing computer unit 14. The remote monitoring unit 13 is provided with a cumulative energization time measuring unit 2. The central processing computer unit 14 has storage means 3,
A comparing unit 4 and a life determining unit 5 are provided. The instruction display means 6 provided at the service base 12 may be a terminal device installed at a branch office or a sales office, or may be a small personal computer carried by maintenance personnel.

In FIG. 3, the cumulative energizing time T of the lighting device 1 is constantly measured by the cumulative energizing time measuring means 2 provided in the control center 11, and the measured value is measured.
Is stored in the storage means 3. The cumulative energizing time T and the predetermined time W stored in the storage means 3 of the control center 11 are constantly compared by the comparing means 4, and when the cumulative energizing time T reaches the predetermined time W, the life of the control center 11 is reduced. Since the life signal is sent from the determination means 5 to the instruction display means 6 of the service base 12, the instruction display means 6 displays that the fluorescent lamp is to be replaced.

In this embodiment, the "fluorescent lamp replacement instruction" is displayed on the personal computer which the maintenance staff always carries, so that the fluorescent lamp which needs to be replaced can be smoothly replaced. In addition, since the display of "fluorescent lamp replacement instruction" is displayed before the fluorescent lamp burns out, it is possible to prevent inconvenience to customers, and the fluorescent lamp in any environment is near the real life. Thus, the replacement of the fluorescent lamp can be performed, so that it is possible to prevent the fluorescent lamp from being replaced while the life is sufficient.

[0018]

As described above, according to the present invention, the life can be easily diagnosed, and any fluorescent lamp having a different environment can be replaced with a new fluorescent lamp before the fluorescent lamp burns out. A method and an apparatus for diagnosing the life of a fluorescent lamp which can be replaced are obtained.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention and is a functional block diagram of a fluorescent lamp life diagnosing device.

FIG. 2 shows one embodiment of the present invention, and is a characteristic curve diagram of lighting start voltage and cumulative energizing time.

FIG. 3 shows an embodiment of the present invention and is a schematic explanatory diagram of a fluorescent lamp life diagnosing device when applied to an elevator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Illumination device 2 Cumulative energization time measurement means 3 Storage means 4 Comparison means 5 Life judgment means 6 Instruction display means 7 Life diagnosis device 8 Elevator 9 Elevator car 10 Remote intelligent diagnosis device 11 Control center 12 Service base 13 Remote monitoring unit 14 Central processing computer

Claims (4)

[Claims] In a method for diagnosing the life of a fluorescent lamp which is turned on by an electronic starter, the cumulative energizing time of the fluorescent lamp is measured, and the measured cumulative energizing time is compared with a predetermined time stored in advance. A method of diagnosing the life of a fluorescent lamp, wherein the life is diagnosed when the cumulative energization time is approximated or equal to the predetermined time. 2. The method according to claim 1, wherein the predetermined time is about 20,000 hours. 3. An apparatus for diagnosing the life of a fluorescent lamp which is turned on by an electronic starter, a cumulative power supply measuring means for measuring the cumulative power supply time of the fluorescent lamp, a storage means for storing the cumulative power supply time, and Comparing means for comparing a predetermined time stored in advance with the cumulative energizing time; life determining means for issuing a life signal when the cumulative energizing time approaches or equals the predetermined time by the comparing means; A fluorescent lamp life diagnosing device, which comprises at least an instruction display means which operates in response to a life signal from the life determining means and issues a fluorescent lamp replacement instruction. 4. The apparatus according to claim 3, wherein said instruction display means is a personal computer carried by a maintenance person.