JP2004127882A - Fluorescent lamp lighting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fluorescent lamp lighting device capable of selecting luminous flux life performance characteristics corresponding to the kinds of the phosphor of a fluorescent lamp 11. <P>SOLUTION: This fluorescent lamp lighting device can cope with luminous flux life performance characteristics of the phosphors of the different fluorescent lamps 11 by adding a selection switch 51 to select life performance characteristics corresponding to the fluorescent lamp 11. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a fluorescent lamp lighting device having a selection switch capable of selecting a luminous flux working characteristic.
[0002]
[Prior art]
An instrument main body; and a fluorescent lamp mounted outside the instrument main body. A lighting circuit for illuminating the fluorescent lamp, wherein the illuminating circuit comprises a time storage means for recording the cumulative lighting time of the fluorescent lamp and a characteristic storage means for storing various luminous working characteristics corresponding to various lamps. There is known a lighting device which reads data from the time storage unit and the characteristic storage unit and controls the light output of the fluorescent lamp to be substantially constant irrespective of a change in the cumulative lighting time.
[0003]
[Problems to be solved by the invention]
Although the luminous flux working characteristics of a fluorescent lamp differ depending on the type of phosphor, the user can freely select the type of phosphor, so that if the luminous working characteristics are the same regardless of the type of phosphor as in the conventional case, the cumulative The dimming degree with respect to the lighting time is also the same, and the lamp light flux differs depending on the phosphor. An object of the present invention is to provide a fluorescent lamp lighting device capable of selecting a luminous flux working characteristic corresponding to a type of a fluorescent material of a fluorescent lamp.
[0004]
[Means for Solving the Problems]
The present invention can cope with the luminous flux working characteristics of the phosphors of different fluorescent lamps by adding a selection switch for selecting the light east working characteristic corresponding to the fluorescent lamp.
[0005]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to FIGS. The apparatus shown in FIG. 1 is a fluorescent lamp lighting device including an apparatus main body 10, a fluorescent lamp 11 and a lamp socket 12 mounted on the apparatus main body, and an operation section of a selection switch 51 provided outside the apparatus main body. The selection switch 51 is a notch switch.
2, the lighting circuit 31 is also supplied with power by the voltage of the "AC power supply 21", and lights the fluorescent lamp 11 by the lighting circuit 31 controlled by the control circuit 36. The control circuit 36 controls the cumulative lighting time and the luminous flux. The cumulative lighting time of the fluorescent lamp 11 is counted by the cumulative lighting time counting circuit 38 for the energizing time of the AC power supply 21, and the time is stored and retained even when the AC power supply 21 is lost. For example, the light beam travel characteristic is stored in a light beam travel characteristic storage circuit 37 corresponding to the type of the fluorescent substance, in a memory 39 using a nonvolatile memory (EEPROM) or the like. Since the luminous flux working characteristics differ depending on the type of the phosphor as shown in FIG. The data is read out from the light flux stroke characteristic storage circuit 37. A flow chart of the above operation is shown in Fig. 3. The switch codes 1 correspond to the lamp A, 2 correspond to the lamp B, 3 correspond to the lamp C, and They correspond to lamps A, B, and C of different phosphors, respectively, and are controlled by the control circuit 36 based on the data read from the light flux working characteristic storage circuit 37 and the data read from the memory 39 storing the lighting cumulative time. The luminous intensity is determined, and a control signal is sent to the inverter circuit 34 to control the same. By adding the selection switch 51, the same and constant illuminance can be obtained even with different phosphors.
[0006]
Next, for example, when the lamp B in FIG. 4 is used, the normal usage method is to use the switch code of the selection switch 51 as 2, but if the switch code is used as 1, the switch code becomes 2 The dimming degree becomes shallower and brighter than when it is performed. Similarly, when the lamp B is used and the switch code is set to 3, the dimming degree becomes deeper and darker than when the switch code is set to 2. In this case, the brightness increases as the selection switch 51 is set to the first position, and the brightness decreases as the selection switch 51 is set to the third position. Therefore, by arranging the operation units of the selection switch 51 in the descending order or the descending order of the luminous flux deterioration of the luminous flux working characteristic and determining the step notch of the switch operation unit, the user can match the original type of the phosphor. It is also possible to set brighter or darker than the dimming degree.
In this way, the user can not only select the dimming degree according to the type of the phosphor but also adjust the setting to the brightness desired by the user.
[0007]
【The invention's effect】
According to the present invention, it is possible to select a luminous flux working characteristic corresponding to the type of phosphor in a fluorescent lamp. Further, it is possible to set the brightness to be brighter or darker than the dimming degree corresponding to the type of the original phosphor.
[Brief description of the drawings]
FIG. 1 is a perspective view of an instrument body with a selection switch.
FIG. 2 is a block diagram of the fluorescent lamp lighting circuit.
FIG. 3 is a flowchart of the dimming degree determination.
FIG. 4 is a graph showing cumulative lighting time-lamp luminous flux characteristics for each type of phosphor.
[Explanation of symbols]
10: appliance body 11: fluorescent lamp 12: lamp socket 21: AC power supply 31: lighting circuit 36: control circuit 37: luminous flux working characteristic storage circuit 38: lighting cumulative time counting circuit 39: memory 51: selection switch

Claims (2)

The lighting device includes a lighting device, and includes a lighting circuit for lighting the fluorescent lamp, the lighting circuit being built in the lighting device body, wherein the lighting circuit records a cumulative lighting time of the fluorescent lamp. The memory means and the characteristic storage means for storing various luminous flux working characteristics corresponding to the various lamps, and the data of the time storage means and the characteristic storage means are read out and the light output of the fluorescent lamp is changed regardless of the change of the cumulative lighting time. Operating means of a selection switch for selecting the luminous flux stroke characteristic corresponding to the fluorescent lamp outside the appliance body and selecting to read out the data. A fluorescent lamp lighting device characterized by being arranged. 2. The step notch of the operation unit is set such that the operation unit of the selection switch is moved in the same direction, so that a light beam working characteristic with a larger light beam deterioration is sequentially selected. The fluorescent lamp lighting device according to the above.

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