Socket and discharge lamp

Patent metadata

Field	Value
Publication number	US-9401269-B2
Application number	US-201514609568-A
Country	US
Kind code	B2
Filing date	Jan 30, 2015
Priority date	Jun 30, 2014
Publication date	Jul 26, 2016
Grant date	Jul 26, 2016

Abstract

A socket includes a main body section, a terminal provided in the main body section and assuming a cylindrical shape, a lead wire being welded to an end face provided at one end portion of the terminal, and an insulating section provided on the inside of the terminal, including a hole section through which the lead wire is inserted, and containing resin. When the cross sectional dimension of the lead wire is represented as W and the opening dimension of the hole section on the end face side is represented as “a”, the socket satisfies the following expression:

1.5 W≦a≦2.5 W.

First claim

What is claimed is:

1. A discharge lamp comprising:
a burner comprising:
a light-emitting section including a discharge space on an inside;
a sealing section provided at an end portion of the light-emitting section;
an electrode, one end of which is provided on an inside of the discharge space and another end of which is provided on an inside of the sealing section; and
a lead wire electrically connected to the electrode; and

a socket comprising:
a main body section;
a terminal provided in the main body section and having a cylindrical shape, the lead wire being welded to an end face provided at one end portion of the terminal; and
an insulating section provided on an inside of the terminal, including a hole section through which the lead wire is inserted, and containing resin, wherein
when a cross sectional dimension of the lead wire is represented as “W” and an opening dimension of the hole section on the end face side is represented as “a”, the socket satisfies the following expression:
1.5 W≦a≦2.5 W.

2. The discharge lamp according to claim 1 , further comprising a first inclined section provided on the end face of the terminal, a cross sectional dimension of the first inclined section gradually decreasing toward an outside of the terminal, wherein
at least a part of an end portion of the insulating section on the end face side is provided in the first inclined section.

3. The discharge lamp according to claim 2 , wherein
the insulating section includes a second inclined section, and
the second inclined section is provided on the one end portion of the terminal, and a cross sectional dimension of the second inclined section gradually decreases toward an outside direction of the terminal.

4. The discharge lamp according to claim 3 , wherein an opening dimension of the second inclined section on the first inclined section side is equal to an opening dimension of the hole section provided in the insulating section on the end face side.

5. The discharge lamp according to claim 1 , wherein one end portion of the lead wire is provided on an inside of a hole provided in the end face of the terminal.

6. The discharge lamp according to claim 1 , wherein the terminal contains metal.

7. The discharge lamp according to claim 1 , wherein the insulating section contains polyphenylene sulfide.

8. The discharge lamp according to claim 1 , wherein the lead wire is of a linear shape and contains molybdenum.

Assignees

• Toshiba Lighting & Technology

Inventors

• Shirakawa Osamu

Classifications

• H01K1/46

  supported by a separate part, e.g. base, cap · CPC title

• H01J5/54 Primary

  supported by a separate part, e.g. base · CPC title

• H01R13/405

  Securing in non-demountable manner, e.g. moulding, riveting · CPC title

• H01J5/62

  Connection of wires protruding from the vessel to connectors carried by the separate part · CPC title

• H01J9/36

  Joining connectors to internal electrode system · CPC title