CN2665911Y

CN2665911Y - Black preventing apparatus for energy saving tube

Info

Publication number: CN2665911Y
Application number: CN 03277918
Authority: CN
Inventors: 曹建元
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-08-19
Filing date: 2003-08-19
Publication date: 2004-12-22
Anticipated expiration: 2013-08-19

Abstract

The utility model discloses an anti-blackening device for energy-saving lamp tube to overcome the disadvantage that a cathode end tube of the prior energy-saving lamp tube is easy to be blackened. The anti-blackening device for energy-saving lamp tube is provided with a metal plate and an anti-blackening protective ring plate. One end of the metal plate is fixed to a glass core column of the cathode end and the other end of the metal plate is fixedly connected with the anti-blackening protective ring plate, thus leading the cathode to be accommodated inside the anti-blackening protective ring plate without being contacted with the internal surface of the anti-blackening protective ring plate. As the cathode end is provided with the anti-blackening protective ring plate, the cathode electron powder directly goes into the anti-blackening protective ring instead of the fluorescent powder layer in the energy-saving lamp tube, which avoids damages to the fluorescent powder layer and blackness at the two ends of the lamp tube and meanwhile strengthens lighting and prolongs the service life of lamp tube.

Description

Black preventing apparatus for energy saving tube

Affiliated technical field

The utility model relates to a kind of black preventing apparatus for energy saving tube, and especially a kind of glass lamp diameter is the anti-black devices in 18 to 22 millimeters 2C, 2D type power saving fluorescent lamps two ends.

Background technology

2C, its cathode terminal fluorescent tube of 2D type power saving fluorescent lamps (being lamp tube ends) used after a period of time (about 500 hours) will blackening, and one influences the luminous intensity of fluorescent tube like this, its two useful life that has shortened fluorescent tube, its three influence attractive in appearance.

Summary of the invention

The deficiency of blackening takes place easily in order to overcome existing 2C, its cathode terminal fluorescent tube of 2D type power saving fluorescent lamps; The utility model provides a kind of black preventing apparatus for energy saving tube for this reason, and this anti-device of deceiving can make 2C, 2D type power saving fluorescent lamps lamp tube ends after blackening phenomena, i.e. long-time use can not take place its cathode terminal fluorescent tube after long-time the use yet blackening can not take place.

The utility model for the technical scheme that solves its technical problem and adopt is: this black preventing apparatus for energy saving tube; be provided with a sheet metal and anti-black guard circle sheet; sheet metal one end is fixed on the glass stem of cathode terminal; the sheet metal other end and anti-black guard circle sheet are affixed; make negative electrode place anti-black guard circle sheet and do not contact with anti-black guard circle plate inner surface; can directly not splash when the electronic powder on the negative electrode is launched like this above the phosphor powder layer in the fluorescent tube, can not destroy phosphor powder layer in the fluorescent tube.

Sheet metal and anti-black guard circle sheet are made with resistant to elevated temperatures metal material.

The beneficial effects of the utility model are: owing to be provided with anti-black guard circle sheet at cathode terminal; can directly not beat when the cathode electronics powder is launched like this above the fluorescent material in fluorescent tube; but beat at anti-black guard circle sheet inner face; so just can not destroy phosphor powder layer in the fluorescent tube; lamp tube ends just can not turned black, and has strengthened luminous intensity simultaneously, prolonged useful life relatively yet.

Description of drawings

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the right view of the anti-black guard circle sheet shown in Fig. 1.

Embodiment

Embodiment: referring to Fig. 1, Fig. 2, a kind of black preventing apparatus for energy saving tube, be provided with a sheet metal 1 and an anti-black guard circle sheet 2, sheet metal 1 one ends are fixed on the glass stem 4 of negative electrode 3, sheet metal 1 other end and anti-black guard circle sheet 2 are affixed, make negative electrode 3 place anti-black guard circle sheet 2 and do not contact with anti-black guard circle sheet 2 inner surfaces, with anticreep, can directly not splash during the emission of the electronic powder on the negative electrode 3 like this above the phosphor powder layer in the fluorescent tube, can not destroy the interior phosphor powder layer of fluorescent tube; Sheet metal 1 and the anti-black resistant to elevated temperatures metal material of guard circle sheet 2 usefulness are made again.

After the utility model is used for 2C, 2D type electricity-saving lamp, can effectively prevent the blackening of 2C, 2D type electricity-saving lamp two ends fluorescent tube, strengthen luminous intensity, increase the service life.

Claims

1. black preventing apparatus for energy saving tube; it is characterized in that: be provided with a sheet metal and anti-black guard circle sheet; sheet metal one end is fixed on the glass stem of cathode terminal; the sheet metal other end and anti-black guard circle sheet are affixed, make negative electrode place anti-black guard circle sheet and do not contact with anti-black guard circle plate inner surface.

2. black preventing apparatus for energy saving tube according to claim 1 is characterized in that: sheet metal and anti-black guard circle sheet are made with resistant to elevated temperatures metal material.