Bulb type speaker structure

A bulb type speaker structure comprising a speaker, a circuit board, and a case body;

• wherein
• said speaker can receive signals transmitted from said circuit board and produce sound;
• said circuit board comprises an AD adaptor, a reception circuit, and an amplification circuit;
• said AD adaptor can transform the power supply of usual use into that used in the reception circuit and amplification circuit;
• said reception circuit can receive signals;
• said amplification circuit can enlarge the signals received and then transmit them to said speaker;
• said case body has a housing, a joint, and a safeguard;
• said housing is a case with hollow room for accommodating said circuit board and said speaker;
• the front end of said housing has an opening combined with said safeguard, which is established to be a board;
• on another end of said housing there established said joint, which has inside and outside conductors to form an analogue of bulb adapters;
• said circuit board is lodged inside of said housing;
• leads connect said inside conductor and said outside one of said joint to said AD adaptor respectively;
• said speaker is then set in the remaining space inside said housing and connected to said amplification circuit of said circuit board with leads;
• said safeguard is combined to the opening of said housing can seal and form the bulb type speaker structure.