PROBLEM TO BE SOLVED: To provide a light source device comprising an LED which can be used instead of a prior light source device such as a halogen lamp, in a dental treatment shadowless lamp.SOLUTION: There is provided a light source device 10 for a dental treatment shadowless lamp, comprising: a heat sink 16 which mounts an LED 18 on a surface thereof, and is disposed to face a left direction by a prescribed angle to a front direction A of the light source device a heat sink 17 which mounts an LED 19 on a surface thereof, the LED being connected to the LED 18 in series, which is disposed to face a right direction by a prescribed angle to the front direction A, and is adjacent to the heat sink 16 a circuit board 12 mounting an AC-DC conversion circuit, an LED driver for driving the LEDs 18, 19, and an inductor which is connected to the LEDs 18, 19 in series, and which is disposed on a rear side of the heat sinks 16, 18 with a space between it and the heat sinks and a pin support part 14 which is disposed on a lower end of the circuit board 12, and supports power source pins 20a, 20b connected to the AC-DC conversion circuit, arranged in a lateral direction and erected.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】歯科医療用無影灯において、ハロゲンランプ等の従来の光源装置に代わりに利用できる、LEDを用いた光源装置を提供する。【解決手段】歯科用無影灯の光源装置10であって、表面にLED18が実装され、光源装置の正面方向Aに対して所定角度だけ左側を向くよう設けられる放熱板16と、表面にLED18と直列に接続されるLED19が実装され、正面方向Aに対して前記所定角度だけ右側を向くとともに、放熱板16の隣に設けられる放熱板17と、AC-DC変換回路と、LED18,19を駆動するLEDドライバと、LED18,19と直列に接続されるインダクタと、が実装され、放熱板18,19の裏側においてそれらと離間して設けられる回路基板12と、回路基板12の下端部に設けられ、AC-DC変換回路に接続されるとともに左右に並んで立設される電源ピン20a,20bを支持するピン支持部14と、を含む。【選択図】図1
