Fluorescent lamp unit
First Claim
Patent Images
1. A fluorescent lamp unit comprising a circular fluorescent tube;
- an upper cover which overlies said circular fluorescent tube, which has, at one end, an edge cover member covering substantially an upper half surface of said circular fluorescent tube and which is provided with a screw base at the other end for insertion into threaded electrical sockets;
a lower cover which underlies said circular fluorescent tube in a manner to oppose said upper cover and which comprises a protective cover member for covering a central portion of said upper cover surrounded by said fluorescent tube and holder members extending from said protective cover member to said edge cover member of said upper cover in order to partially support substantially a lower half surface of said circular fluorescent tube; and
connection means for holding said upper cover and said lower cover in engagement.
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Accused Products
Abstract
A fluorescent lamp unit according to this invention has a structure wherein a circular fluorescent tube is fixed merely by the engagement between an upper cover having a screw base and a lower cover. A starting circuit of the fluorescent lamp unit uses a ballast resistor as a stabilizer.
Accordingly, the fluorescent lamp unit is small in size, light in weight and low in price and can be conveniently attached to a socket.
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Citations
15 Claims
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1. A fluorescent lamp unit comprising a circular fluorescent tube;
- an upper cover which overlies said circular fluorescent tube, which has, at one end, an edge cover member covering substantially an upper half surface of said circular fluorescent tube and which is provided with a screw base at the other end for insertion into threaded electrical sockets;
a lower cover which underlies said circular fluorescent tube in a manner to oppose said upper cover and which comprises a protective cover member for covering a central portion of said upper cover surrounded by said fluorescent tube and holder members extending from said protective cover member to said edge cover member of said upper cover in order to partially support substantially a lower half surface of said circular fluorescent tube; and
connection means for holding said upper cover and said lower cover in engagement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 15)
- an upper cover which overlies said circular fluorescent tube, which has, at one end, an edge cover member covering substantially an upper half surface of said circular fluorescent tube and which is provided with a screw base at the other end for insertion into threaded electrical sockets;
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8. A fluorescent lamp unit comprising:
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(a) an upper cover provided with a fluorescent light tube receiving portion receiving and covering substantially an upper half of a circular fluorescent tube, said upper cover being provided with a screw base connector for electrically connecting said fixture to a threaded electrical socket; (b) a lower cover having a protective cover member for covering a central portion of the upper cover and holder members extending from said protective cover member for supporting a lower half surface of said circular fluorescent tube; (c) connection means for holding said upper and lower covers together with a fluorescent tube disposed therebetween; and (d) a fluorescent light tube starting circuit connected to said fluorescent light tube. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification