Double lighting lamp with built-in low-voltage halogen light source, its transformer and double lighting lamp and mounting structure of secondary socket of transformer

摘要

It is an object of the present invention to solve the problems that arise when the low voltage halogen lamp is replaced with a conventional incandescent lamp and the dual lamp with a low voltage halogen light source has the same shape as a conventional incandescent lamp. That is, an explosion accident occurs when the low voltage halogen lamp built-in dual lamp is inserted into the conventional high-voltage primary socket by mistake during the bulb replacement, but the object of the present invention is to provide a low-The present invention provides a high-safety, low-voltage halogen light built-in double ignition lamp in which the light source is not fed or turned on, and is fed and turned on in comparison with a case where it is inserted into a secondary side socket used in a transformer. Voltage halogen light source built-in double lamp (A) mounted on a secondary side socket (7) of a transformer (B) for use power source voltage drop which is installed in a primary side socket (2) already installed for a commercial power source, A concave portion 10 is formed at a portion of the insertion portion 9 opposite to the protruding electrode 8 at the bottom of the secondary socket 7 of the insertion portion 9 to the protruding electrode 7, (11) is formed in the concave portion (10).