White LED light source module

A white LED light source module comprising:

• a white LED light source having an illumination direction, the white LED light source including an LED element configured to emit light and a sealing resin containing a transparent resin and a fluorescent material dispersed in the transparent resin, the sealing resin configured to seal the entire LED element;
• a first photosensor having a light receiving direction and configured to detect brightness of external light and to generate a first detection signal;
• a lighting chamber including a mounting base portion on which the white LED light source and the first photosensor are disposed, a side wall disposed on and erected from the mounting base portion and defining an upper opening, and a transparent cover covering the opening defined by the side wall, the lighting chamber being defined by the mounting base portion, the side wall, and the transparent cover, the white LED light source and the first photosensor being disposed side by side such that the illumination direction of the white LED light source is substantially the same direction as the light receiving direction of the first photosensor;
• an LED driving current controlling unit configured to control an LED driving current to the LED element, wherein
• when the white LED light source module does not function as a light source and is in a standby state, the first photosensor is configured to detect a brightness of external light to generate and send the first detection signal to the LED driving current controlling unit, and according to the first detection signal the LED driving current controlling unit is configured to generate and send a controlled current to drive the LED element such that brightness of the white LED light source becomes substantially the same as the brightness of the external light.