JPH01115118U

JPH01115118U -

Info

Publication number: JPH01115118U
Application number: JP1132288U
Authority: JP
Priority date: 1988-01-29
Filing date: 1988-01-29
Publication date: 1989-08-02

Description

[Brief explanation of the drawing]

第１図は本考案一実施例の要部正面図、第２図
は同上の回路配置例を示す説明図、第３図は同上
のプリント基板の要部裏面図、第４図は同上の具
体例を示す要部裏面図、第５図は他の実施例の概
略構成を示す要部正面図、第６図は同上の要部側
面図、第７図ａ，ｂはさらに他の実施例の概略構
成を示す正面図、第８図は本考案に係る放電灯点
灯装置の点灯回路の構成例を示す回路図、第９図
は従来例の要部正面図、第１０図は同上の回路配
置例を示す説明図、第１１図は同上の要部裏面図
、第１２図は本考案に係る放電灯点灯装置を組み
込んだ照明器具の構成を示す断面図である。１は点灯回路、２は雑音防止回路、３は整流平
滑回路、４は発振制御回路、５はスイツチング回
路、６はＬＣ共振回路、７は放電灯、８はプリン
ト基板、９は開閉器、Ｓは空きスペースである。 Fig. 1 is a front view of the main parts of an embodiment of the present invention, Fig. 2 is an explanatory diagram showing an example of the circuit layout of the same, Fig. 3 is a rear view of the main parts of the printed circuit board of the above, and Fig. 4 is a concrete diagram of the same. FIG. 5 is a front view of the main part showing the schematic structure of another embodiment, FIG. 6 is a side view of the main part of the same example, and FIGS. 7 a and b are still another embodiment. 8 is a circuit diagram showing a configuration example of a lighting circuit of a discharge lamp lighting device according to the present invention; FIG. 9 is a front view of main parts of a conventional example; FIG. 10 is a circuit layout of the same as above. An explanatory diagram showing an example, FIG. 11 is a rear view of the same essential parts as above, and FIG. 12 is a sectional view showing the configuration of a lighting fixture incorporating the discharge lamp lighting device according to the present invention. 1 is a lighting circuit, 2 is a noise prevention circuit, 3 is a rectifying and smoothing circuit, 4 is an oscillation control circuit, 5 is a switching circuit, 6 is an LC resonance circuit, 7 is a discharge lamp, 8 is a printed circuit board, 9 is a switch, S is an empty space.

Claims

[Scope of utility model registration request]

A power supply circuit unit is equipped with a noise prevention circuit that prevents high-frequency noise from leaking to the power supply side and converts AC power into DC power, and a switching circuit converts the DC power into a high-frequency switched voltage through an LC resonance circuit. A lighting circuit is formed with a high frequency generator that is applied to the discharge lamp, and the circuit components of the lighting circuit are mounted on a single printed circuit board, and an AC power switch is placed in the center of the printed circuit board. In the device, the L of the power supply circuit section and the high frequency generation section
The C resonant circuit is distributed and arranged on both sides of the switch provided in the center of the printed circuit board, and an allowable free space is provided on the printed circuit board between the power supply circuit section including the switch and the LC resonant circuit of the high frequency generation section. A discharge lamp lighting device characterized in that the discharge lamp lighting device is arranged in a concentrated manner.