JPS6217717Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention allows one person to control the secondary voltage of the fluorescent lamp ballast even if the length of the straight tube fluorescent lamp is longer than the distance between hands spread out on both sides, for example, 1.5 m or more. This invention relates to a device for measuring the secondary side voltage of a fluorescent lamp ballast that can be used to measure the voltage on the secondary side of a fluorescent lamp ballast.

Conventionally, in order to maintain and inspect fluorescent lighting equipment installed on the ceiling of factories, offices, etc., in order to measure the secondary voltage of the ballast of the lighting equipment, it is necessary to use the fluorescent lighting equipment installed in these factories, etc. As the light is a straight tube and extremely long, as shown in Figure 1, two workers were standing on stepladder 1 while one worker removed the fluorescent light from lighting fixture 2. With both hands fully extended, the electrodes 5 of the voltmeter 4 are inserted into the electrodes of the sockets 3 on both sides of the lamp, and another worker reads the voltmeter 4. In this case, especially in a factory, the The position is particularly high, for example 3 to 6 meters, which is extremely dangerous, and the work is difficult because two workers must stand on one stepladder 1. Moreover, depending on the fluorescent lamp, the height may be very high. There are some objects that are longer than 1.5m or 2m that one worker cannot reach at both ends, and in such cases, the worker must stand on each of the two stepladders 1 to measure the voltage. Therefore, measuring the voltage on the secondary side of the ballast requires considerable effort and time, and has the disadvantage of being extremely dangerous.

The purpose of this invention is to allow one worker to easily measure the secondary voltage of a fluorescent lamp ballast attached to a lighting equipment, even when the length of the fluorescent lamp is extremely long (2 m or more). The object of the present invention is to eliminate the above-mentioned drawbacks of the prior art by providing an instrument for measuring the secondary side voltage of a fluorescent lamp ballast that can be used to measure the secondary side voltage of a fluorescent lamp ballast.

Next, the configuration of an embodiment of the present invention is shown in Figures 2 to 4.
This will be explained using figures.

Both ends of the measuring instrument main body 6, which has the same shape as a straight tube fluorescent lamp, are inserted into sockets for inserting electrodes at both ends of the fluorescent lamp in the same manner as when installing a fluorescent lamp, and are attached to the socket on the lighting equipment side of the same socket. Electrodes 7 to 10 connected to the electrode are provided protrudingly, and the electrodes 7, 10 on the same axis are connected to the electrode.
There is a voltage dividing resistor R between 8 and between 9 and 10.
1, R2, R3 series circuit and voltage dividing resistors R4, R
5, R6 are connected in series, voltmeter V1 is connected across voltage dividing resistor R2 via diode D1, and voltmeter V2 is connected across voltage dividing resistor R5 via diode D2. Measuring instrument body 6
The visible position on the outer periphery, that is, the position that can be seen from the outside after the measuring instrument main body 6 is attached to the socket of the lighting equipment, in this embodiment, both electrodes 7, 9, as shown in FIG.
The voltmeters V1 and V2 are installed with their positions offset by 45 degrees with respect to the line connecting terminals 8 and 10, and the voltage dividing resistors R3 and
The partial pressure ratio switching switch SW1 connected between both ends of R6 is installed at an operable position on the outer periphery of the measuring instrument main body 6, that is, at a position that can be operated from the outside after the measuring instrument main body 6 is attached to the socket of the lighting equipment. When the switch SW1 is set to the contact OFF side, the meter range of the voltmeters V1 and V2 is the rated voltage on the secondary side of the ballast of the factory fluorescent lamp.
When the voltage is set to 290V and the changeover switch SW1 is turned on, the voltmeters V1 and V2 are set to 290V.
The meter range is set to the rated voltage of the ballast secondary side of the office fluorescent light, 230V.

Next, the operation of this embodiment will be explained.

When measuring the secondary voltage of a ballast attached to a lighting equipment using the secondary voltage measuring instrument 11 of a fluorescent lamp ballast configured as described above, first, a worker climbs onto a stepladder and measures the After removing the fluorescent lamp from the fixture, the measuring fixture 11 is attached to the lighting fixture by inserting the electrodes 7 to 10 at both ends of the secondary voltage measuring instrument 11 into the socket of the lighting fixture instead of the fluorescent light. Even if the distance between the sockets at both ends of the lighting equipment is such that one worker cannot reach both ends, for example, at a distance of 1.5 m or more, it can be easily installed in the same way as installing a fluorescent light, and this installation allows for measurement. Equipment 11
Either the electrodes 7, 8 or 9, 10 at both ends are necessarily connected between the secondary output terminals of the ballast via the electrodes of the lighting fixture side socket.

Therefore, the secondary side voltage of the ballast is displayed on either voltmeter V1 or V2 in the meter range that is switched via the changeover switch SW1 in accordance with the rated secondary output voltage of the ballast. Through this, abnormalities in the secondary side voltage of the ballast due to shortcuts or disconnections can be confirmed, and shortening of the life of the fluorescent lamp due to abnormalities in the secondary side voltage can be easily prevented. Depending on the method of the fluorescent lamp lighting circuit, the electrodes 7 and 9, and 8 and 10 can be connected to the same potential to form a single system of voltmeters V1 and V2 and their associated circuits.

In this embodiment, the longitudinal dimension of the measuring instrument main body 6 is constant; however, as shown in FIG. Alternatively, as shown in FIG. 6, by locking the screws 15 in accordance with the longitudinal dimensions of the two-part measuring instrument main body 14 according to the various dimensions of the fluorescent lamp, one measuring instrument can be used to measure various longitudinal dimensions. The ballast secondary voltage of fluorescent lighting fixtures can be measured.

Next, the effects of the present invention will be explained.

The present invention is to attach a voltage measuring electrode that is connected to the electrode of a socket for inserting electrodes at both ends of a fluorescent lamp in the same way as when installing a fluorescent lamp into a socket of a straight tube type fluorescent lamp lighting equipment into a socket that has almost the same shape as the fluorescent lamp. Voltmeters protruding from both ends of the measuring instrument body and measuring the secondary voltage of the ballast of the fluorescent lighting equipment are attached to the measuring instrument body, and furthermore, a voltage measuring terminal of the voltmeter is connected to the measuring instrument body. The secondary voltage measuring device of the fluorescent lamp ballast is connected to the electrode of the measuring device main body.

As a result, the present invention allows one worker to control the secondary voltage of the fluorescent lamp ballast installed in the lighting equipment, even when the length of the fluorescent lamp is extremely long, such as 2 m or more. It has an effect that can be easily measured.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of a conventional embodiment, Fig. 2 is a front view of an embodiment of the present invention, Fig. 3 is a side view thereof, Fig. 4 is an electric circuit diagram thereof, and Figs. 5 and 6. FIG. 2 is an explanatory diagram of another embodiment of the present invention. 6... Measuring instrument body, 7-10... Electrode, R1
~R6...Resistance, V1, V2...Voltmeter.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) Voltage measuring electrodes connected to the electrodes of a socket for inserting electrodes at both ends of a fluorescent lamp in a straight tube type fluorescent lamp lighting device in the same manner as when installing a fluorescent lamp, A voltmeter is provided protruding from both ends of a measuring instrument main body having almost the same shape as a fluorescent lamp, and a voltmeter is attached to the measuring instrument main body to measure the secondary voltage of the ballast of the fluorescent lamp lighting equipment, and A secondary side voltage measuring instrument for a fluorescent lamp ballast, characterized in that a voltage measuring terminal of a voltmeter is connected to an electrode of the measuring instrument main body. (2) A measuring device in which two voltmeters for measuring the voltage on the secondary side of the ballast are attached to the measuring device body, and the voltage measuring terminals of each voltmeter are protruded in correspondence with the electrodes at both ends of the fluorescent lamp. The secondary side voltage measuring instrument for a fluorescent lamp ballast according to item 1, characterized in that it is connected between electrodes on the same axis of the electrodes at both ends of the main body. (3) The fluorescent lamp according to the above items 1 and 2, characterized in that a switch for changing the meter range in accordance with the secondary side rated voltage of the ballast for each lighting equipment is attached to the measuring instrument body. Light ballast 2
Next-side voltage measuring device.