CN2487107Y

CN2487107Y - Compact fluorescent lamp with radiator

Info

Publication number: CN2487107Y
Application number: CN01230611U
Authority: CN
Inventors: 马文浩
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-07-09
Filing date: 2001-07-09
Publication date: 2002-04-17
Anticipated expiration: 2011-07-09

Abstract

The utility model which relates to an illuminating apparatus with linear light source, in particular to an energy-saving lamp with a radiation device comprises a lamp tube, a fixing upper cover plate of a lamp tube, a ballast, a shell, and a lamp holder. Wherein, the upper cover plate is a metal plate with a good thermal conductivity, and a heat insulation plate is arranged on the upper cover plate, and a heat radiation space is kept between the heat insulation plate and the upper covering plate, and an infrared ray reflection layer is arranged on the heating insulation plate surface facing the upper cover plate. Because the upper cover plate is a metal plate with a good thermal conductivity and a good heat radiation performance, the upper cover plate can not only fix the lamp tube, but also conduct and radiate heat, and the luminous efficiency can be improved, and the problem of shell aging and yellowed can be solved. The arrangement of the heat insulation plate, the heat radiation space and the infrared ray reflection layer is beneficial for the hot air discharging, the infrared ray thermal radiation reflection and the thermal conductivity resistance, and the thermal influence to electronic elements caused by lamp tube heat can be reduced, and the reliability can be improved, and the electricity conducting safety can be guaranteed.

Description

The compact fluorescent lamp that has heat abstractor

(1), technical field

The utility model relates to a kind of lighting device that uses linear light source, particularly a kind of electricity-saving lamp that has heat abstractor.

(2), background technology

Existing band light transmission outer cover shell (to call outer cover in the following text) electricity-saving lamp and in, high-power naked pipe electricity-saving lamp, owing to fluorescent tube and too high light efficiency and the quality stability that has reduced whole lamp of peripheral temperature.The reliability of electronic energy-saving lamp was not ideal enough always in the past, wherein Yin Wendu and influence whole lamp behaviour and light efficiency occupies larger proportion.Feedack from the market, early, nearly half is that Yin Wendu is too high and damage in the mid-term electronic energy-saving lamp that damages.It seems that some be fluorescent tube blackhead and filament breaking problem, but in fact also be that electronic device temperature influence and element electrical quantity change, and makes the output current characteristic variation and damage fluorescent tube.For example: the electrolytic capacitor in the electric ballast, because of including dielectric,, be generally 3000～8000h so the life-span is limited, this life-span also can the significantly increase and decrease with variation of temperature.When electrolytic capacitor was worked under excessive temperature, capacitance easily diminished, and it is big that the electric current crest factor becomes, and quickened the blackening of tube cathode district.Simultaneously, temperature also has considerable influence to light efficiency, for example, a kind of conventional electricity-saving lamp at work, light efficiency was 58Lm/w when fluorescent tube was exposed, and after adding outer cover, its light efficiency is 43.5Lm/w, and-7% interception of frosted bulb outer cover is arranged here, and the main lamp hole temperature that is sealed in the outer cover raises, uitraviolet intensity descends in the fluorescent tube, makes light efficiency descend 18%.

The existing bigger improvement of present electronic energy-saving lamp, except device, circuit quality improved, the shell of part electricity-saving lamp was offered air vent hole and is reduced temperature of electronic component in the shell, but existed dust to enter the interior defective of shell simultaneously again.In some, high-power energy-saving lamp adopts the way of layered thermal insulation, but to having the electricity-saving lamp of outer cover, it is bigger that it improves difficulty.In order to keep higher light efficiency, the lamp of under excessive temperature, working, the cold junction that normally adopts amalgam to replace pure mercury or adopt glass-tube to protrude, but these methods can not reduce the heat conduction of fluorescent tube and the adverse effect that thermal radiation causes electronic component.

(3), summary of the invention

The purpose of this utility model is to provide a kind of both can reduce the surface of the light tube local temperature, can reduce the thermal impact of fluorescent tube heat to electronic component again, the compact fluorescent lamp that has heat abstractor that its light efficiency and reliability are high.

The upper cover plate that the utility model is used by fluorescent tube, fixed lamp tube, ballast, shell and lamp holder are formed.Wherein the upper cover plate used of fixed lamp tube is a thermal conductivity good metal plate, and the partiting thermal insulation plate is set above upper cover plate, between partiting thermal insulation plate and the loam cake heat-dissipating space is arranged, and the partiting thermal insulation plate is provided with the reflected infrared ray material layer towards the one side top layer of upper cover plate.Fluorescent tube can add the printing opacity cover body.

The compact fluorescent lamp of band heat abstractor, because upper cover plate is to be made by the materials such as metallic aluminium of thermal conductive resin and thermal diffusivity, local temperature that can fine reduction surface of the light tube, a cold junction that is equivalent to surface of the light tube, make the too high mercury vapour of temperature condense in place, the lower part of this temperature, reduce mercury vapour and press liter, keep high light efficiency.Because there is a best mercury vapor pressure in the low pressure fluorescent lamp, under this air pressure, the ultraviolet ray that the Ar+Hg discharge is sent is the strongest, and the too high or too low light efficiency to lamp of mercury vapor pressure all is disadvantageous.Common one tens watts power saving fluorescent lamps mercury content is (by the requirement of environmental protection standard) below 3mg, and condensing of Trace Mercury steam is pressed with profit to keeping the required best mercury vapour of discharge.The metal top cover plate also can solve housing flavescence problem of aging, be provided with close cover in the outer outlet body effect more outstanding, the part heat in the cover body can be given out outside the shell, and adopt amalgam and cold junction just not to have the effect of this respect.About conductive security, because of the isolated insulation plate is arranged, meet the requirements fully through test, in, use in the high-power energy-saving lamp, the metal top cover plate is higher than upper plastic cover plate reliability, plastics aged deterioration easily under excessive temperature and stronger ultraviolet ray.

Another characteristics of the utility model are can be provided with 1～6mm heat-dissipating space between partiting thermal insulation plate and the upper cover plate, can make inside and outside gaseous exchange, and hot gas is discharged outside the shell, stop the fluorescent tube heat directly to conduct.This partiting thermal insulation plate single face is coated with the reflected infrared ray material layer simultaneously, can reflect 90% infrared heat radiation, reduces the thermal impact of fluorescent tube heat to electronic devices and components, can prevent that again dust, small worm from entering in the lamp housing.

(4), description of drawings

Fig. 1 is the utility model structural representation.

(5), embodiment

Embodiment: see Fig. 1, the utility model comprises lamp holder 1, plastic casing 2, electric ballast 3, the partiting thermal insulation plate 4 that is coated with the reflected infrared ray material layer, heat-dissipating space 5, metal top cover plate 6, fluorescent tube 7 and light transmission outer cover body 8.The lamp head of power saving fluorescent lamps 7 contacts clamping with metal top cover plate 6 and is adhesively fixed, lamp tube wire is connected with electric ballast 3 by partiting thermal insulation plate 4, ballast 3 is assemblied in the plastic casing 2, and ballast 3 lead-out wires and lamp holder 1 join, and lamp holder 1 is pressed together on the upper port of plastic casing 2.Shell 2, partiting thermal insulation plate 4 and upper cover plate 6 fit together, and the part surface of upper cover plate is exposed to the external space.A heat-dissipating space 5 is arranged between partiting thermal insulation plate 4 and metal top cover plate 6,, can add light transmission outer cover body 8 if need.Wherein heat-dissipating space 5 spacings are that distance between upper cover plate 6 and the partiting thermal insulation plate 4 can be made as 1～6mm, heat supply gas gives out outside the lamp body, partiting thermal insulation plate 4 is made by flame retardant plastics, interior thickness is 0.5～3mm, be conductive security and the convection current of prevention hot gas, the one side of facing heat-dissipating space 5 is coated with the reflected infrared ray material layer, can reflect most thermal radiation, and the reflected infrared ray material layer can be that aluminium and indium oxide ooze materials such as assorted tin.Metal top cover plate 6 is generally made by materials such as aluminium alloys, both but the usefulness of fixed lamp tube 7 was again good heating panel, the conduction of power saving fluorescent lamps regional area heat can be dispersed into outside the lamp body, a cold junction quite is set on fluorescent tube, and the control mercury vapor pressure rises to stablize the light efficiency of lamp.

Claims

1, the compact fluorescent lamp that has heat abstractor, comprise upper cover plate, ballast, shell and lamp holder that fluorescent tube, fixed lamp tube are used, it is characterized in that the upper cover plate that said fixed lamp tube is used is a heat conductivility good metal plate, the partiting thermal insulation plate is set above upper cover plate, is provided with heat-dissipating space between partiting thermal insulation plate and the upper cover plate.

2, the compact fluorescent lamp that has heat abstractor as claimed in claim 1 is characterized in that the partiting thermal insulation plate is provided with the reflected infrared ray material layer towards the one side top layer of upper cover plate.

3, the compact fluorescent lamp that has heat abstractor as claimed in claim 1 is characterized in that fluorescent tube adds the printing opacity cover body.

4, the compact fluorescent lamp that has heat abstractor as claimed in claim 1, the part surface exposure that it is characterized in that upper cover plate is in the external space.

5, the compact fluorescent lamp that has heat abstractor as claimed in claim 1 is characterized in that the distance between upper cover plate and the partiting thermal insulation plate is 1～6mm.