Safety lampholder and method for avoiding accidental electric shock caused by lampholder

Abstract

A safety lampholder is disclosed, comprising an insulating housing; an insulating or electrically conductive lamp socket placed within one end of the housing; an electrically shockproof means fully integrated within another end of the housing, wherein the shockproof means comprises two electrical connectors electrically coupled to a power supply; two electrical contactors in direct contact with a lamp body engagable with the lamp socket; a spring member fixed into the shockproof means; and a switching member having a lower part, an upper part which protrudes beyond a horizontal surface where at least one of the electrical contactors is located, and at least one protrusion with at least one side surface in slidable contact with one of the electrical contactors; and wherein the electrical contactors, electrical connectors and switching member are disposed in a spaced manner. A method for avoiding accidental electric shock during use of a lampholder is also disclosed.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a sectional view of safety lampholder suitable for a screw bulb of a first preferred embodiment according to the invention.

FIG. 2 is a sectional view of safety lampholder suitable for a bayonet bulb of a second preferred embodiment according to the invention.

FIG. 3 is a sectional view of a variation of the safety lampholder of FIG. 1.

FIG. 4 is a sectional view of a variation of the safety lampholder of FIG. 2.

Claims

1. A safety lampholder comprising: an insulating housing;an insulating or electrically conductive lamp socket placed within one end of the housing;an electrically shockproof means fully integrated within another end of the housing;wherein the electrically shockproof means comprises two electrical connectors which are electrically coupled to a power supply; two electrical contactors which come into direct contact with a lamp body in engagement with the lamp socket, one contact at one end of at least one of the electrical contactors being movable resiliently and not directly electrically connected with the electrical connector corresponding thereto; a spring member fixed into a central portion of bottom of the electrically shockproof means; and a switching member having a lower part around which the spring member is fitted, an upper part which protrudes beyond a horizontal surface where at least one of the electrical contactors is located, and at least one protrusion with at least one side surface in slidable contact with one of the electrical contactors; andwherein the electrical contactors, the electrical connectors and the switching member are disposed in the electrically shockproof means in a spaced manner by use of a partition member.

2. The safety lampholder as claimed in claim 1, wherein the switching member is pushed by the lamp body engagable with the lamp socket to slidably push at least one of the electrical contactors by means of the side surface of the protrusion of the switching member in such a manner that the contact of the electrical contactor is electrically in contact with the electrical connector.

3. The safety lampholder as claimed in claim 1, wherein when the lamp body is removed from the lamp socket, the switching member is reset under action of the spring member; and the electrical contactors are separated from the electrical connectors under action of elasticity of the electrical contactors per se.

4. The safety lampholder as claimed in claim 1, wherein the end of the contactor having the contact extends obliquely within the electrically shockproof means.

5. The safety lampholder as claimed in claim 1, wherein one of the electrical contactors optionally comes into direct contact with one of the electrical connectors in the electrically shockproof means.

6. The safety lampholder as claimed in claim 5, wherein the end of the contactor having the contact optionally comes into direct contact with one of the electrical connectors in the electrically shockproof means.

7. The safety lampholder as claimed in claim 5, wherein one of the electrical contactors is in slidable contact with the switching member.

8. The safety lampholder as claimed in claim 6, wherein one of the electrical contactors is in slidable contact with the switching member.

9. The safety lampholder as claimed in claim 1, wherein the switching member comprises a pole having an upper part provided with one or more pinpoint portions; and two protrusions, each of which laterally extends from a respective side of the pole and comprises at least one side surface, said side surface being in contact with the contactor in a slidable manner.

10. The safety lampholder as claimed in claim 1, wherein the switching member is formed as a whole from insulating materials.

11. The safety lampholder as claimed in claim 1, wherein the switching member is formed as a whole or with a part from electrically conductive materials.

12. The safety lampholder as claimed in claim 11, wherein the switching member is used as an electrical contactor in direct contact with the lamp body.

13. The safety lampholder as claimed in claim 12, wherein the end of the switching member in direct contact with the lamp body is movable resiliently and is not directly electrically connected with the electrical connector corresponding thereto.

14. The safety lampholder as claimed in claim 1, wherein the electrical contactor is made of a material having elastic and conductive characteristics.

15. The safety lampholder as claimed in claim 1, wherein the electrical contactor is made of a material having good elastic characteristic and a material having good conductive characteristic.

16. The safety lampholder as claimed in claim 1, wherein the partition member comprises a first partition part for partitioning and securing the electrical contactors and the electrical connectors; and a second partition part for partitioning and securing the electrical contactors and the switching member.

17. The safety lampholder as claimed in claim 16, wherein the partition member further comprises a third partition part for partitioning and securing the electrical contactors and the electrical connectors.

18. The safety lampholder as claimed in claim 17, wherein the second partition part is made integrally with the third partition part.

19. The safety lampholder as claimed in claim 1, wherein the electrical contactor is a spring piece.

20. The safety lampholder as claimed in claim 1, wherein the spring member comprises a spring or other flexing elements and a holding member for supporting the spring or the flexing elements.

21. The safety lampholder as claimed in claim 1, wherein the switching member is movably mounted by use of the spring member in a compartment of the electrically shockproof means defined by the partition member.

22. The safety lampholder as claimed in claim 16, wherein the switching member is movably mounted by use of the spring member in a compartment of the electrically shockproof means defined by the first and second partition parts.

23. A method for avoiding accidental electric shock during exchanging a lamp body or utilizing a lampholder, comprising: providing an insulating housing for a lampholder;providing an insulating or electrically conductive lamp socket within one end of the housing for catering to a lamp body;providing an electrically shockproof means within another end of the housing with which end the electrically shockproof means is fully integrated, wherein the electrically shockproof means comprises two electrical connectors which are electrically coupled to a power supply; two electrical contactors which come into direct contact with a lamp body in engagement with the lamp socket, one contact at one end of at least one of the electrical contactors being movable resiliently and not directly electrically connected with the electrical connector corresponding thereto; a spring member fixed into a central portion of bottom of the electrically shockproof means; and a switching member having a lower part around which the spring member is fitted, an upper part which protrudes beyond a horizontal surface where at least one of the electrical contactors is located, and at least one protrusion with at least one side surface in slidable contact with one of the electrical contactors; anddisposing the electrical contactors, the electrical connectors and the switching member in the electrically shockproof means in a spaced manner by use of a partition member so that all accessible parts in the lampholder are not electriferous when the lampholder is electrically connected.

24. The method as claimed in claim 22, wherein the lampholder as claimed in claim 1 is used.