CN208819831U

CN208819831U - A kind of high colour developing high-pressure sodium lamp

Info

Publication number: CN208819831U
Application number: CN201821676592.9U
Authority: CN
Inventors: 嵇春来; 钟宇新
Original assignee: HIGH AND NEW JINGWEI ELECTRIC CO Ltd NANJING
Current assignee: HIGH AND NEW JINGWEI ELECTRIC CO Ltd NANJING
Priority date: 2018-10-16
Filing date: 2018-10-16
Publication date: 2019-05-03
Anticipated expiration: 2028-10-16

Abstract

The utility model proposes a kind of high colour developing high-pressure sodium lamps, including ceramic inner pipe and it is sintered two porcelain plugs at ceramic inner pipe both ends, run through in the middle part of the porcelain plug and is sealed with niobium pipe, one end that the niobium pipe is located in ceramic inner pipe is welded with electrode, the end face of the porcelain plug being located inside ceramic inner pipe is provided with shrinkage pool, and the bottom surface of the shrinkage pool of the porcelain plug and side hot melt are attached with sodium amalgam surface layer.The utility model is attached to sodium amalgam hot melt in the higher shrinkage pool of temperature by the porcelain plug of setting spill, is conducive to sodium amalgam evaporation；Simultaneously far from high temperature electrode, long service life at the sealing-in of porcelain plug and niobium pipe；And the sintering area of ceramic inner pipe and porcelain plug becomes larger, and connects stronger.

Description

A kind of high colour developing high-pressure sodium lamp

Technical field

The utility model relates to technical field of electricity, concretely relate to a kind of high colour developing high-pressure sodium lamp.

Background technique

High-pressure sodium lamp has many advantages, such as that luminous efficiency height, little power consumption, the service life is long, mist transmitting performance is strong and does not lure worm, but its Colour rendering is poor, poor to the reproducibility of object color itself, is unfavorable for carrying out depth judgement to surrounding enviroment.It is aobvious for high-pressure sodium lamp This poor major defect of color, on the basis of ordinary high pressure sodium vapor lamp, improving sodium vapor pressure and increasing inner tube diameter can change The color developing of kind sodium vapor lamp produces high colour developing high-pressure sodium lamp.The high colour developing high-pressure sodium lamp of the prior art is as shown in Fig. 2, include pottery Porcelain inner tube 10 and sintering 10 both ends of ceramic inner pipe two porcelain plugs 20, through being sealed with niobium pipe 30, institute in the middle part of the porcelain plug 20 It states one end that niobium pipe 30 is located in ceramic inner pipe 10 and is welded with electrode 40, one end hot melt of the ceramic inner pipe is attached with sodium amalgam Surface layer 50.After height colour developing high-pressure sodium lamp starting, electric arc is generated between 10 two end electrodes 40 of ceramic inner pipe, the high temperature action of electric arc makes The heated evaporation of sodium amalgam becomes mercury vapour and sodium vapor, and the electronic impact sodium atom of emission of cathode, which generates energy, keeps light bulb shinny. Since sodium amalgam surface layer 50 is in 10 end region temperature lower position of ceramic inner pipe, when 10 caliber of ceramic inner pipe is larger, sodium amalgam face Layer 50 cannot sufficiently evaporate.It, need to be by electrode 40 toward 10 end of ceramic inner pipe to make the sufficiently evaporation of sodium amalgam surface layer 50 improve vapour pressure Portion is mobile, and the high temperature action of electric arc is also acted on while sodium amalgam surface layer 50 at the sealing-in of niobium pipe 30 and porcelain plug 20, when long Between high temperature easily make at sealing-in rupture, then lamp is made to fail.Therefore, the service life of high colour developing high-pressure sodium lamp is significantly shorter than common at present High-pressure sodium lamp.

Utility model content

To solve the above problems, improving colour rendering the utility model proposes a kind of high colour developing high-pressure sodium lamp, using simultaneously Service life is long.

Technical solution: the utility model proposes a kind of high colour developing high-pressure sodium lamps, including ceramic inner pipe and sintering are in ceramics Two porcelain plugs at pipe both ends, the porcelain plug middle part are located at the welding of one end in ceramic inner pipe through niobium pipe, the niobium pipe is sealed with There is electrode, the end face of the porcelain plug being located inside ceramic inner pipe is provided with shrinkage pool, the bottom surface and side of the shrinkage pool of the porcelain plug Hot melt is attached with sodium amalgam surface layer.

Further, the junction of the porcelain plug and niobium pipe is provided with weldering mud.

Further, the outer wall of the ceramic inner pipe is along the circumferential direction coated there are two wire coil；The ceramic inner pipe Outer wall is coated with a wires along axial.

Further, described two wire coils are arranged symmetrically along the axial center point of ceramic inner pipe.

The utility model has the advantages that porcelain plug of the utility model by setting spill, makes sodium amalgam hot melt be attached to temperature higher recessed In hole, be conducive to sodium amalgam evaporation；Simultaneously far from high temperature electrode, long service life at the sealing-in of porcelain plug and niobium pipe；And it makes pottery Porcelain inner tube and the sintering area of porcelain plug become larger, and connect stronger.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the structural schematic diagram of the prior art.

Specific embodiment

The utility model proposes a kind of high colour developing high-pressure sodium lamps, as shown in Figure 1, including ceramic inner pipe 1 and sintering in ceramics Two porcelain plugs 2 at 1 both ends of inner tube, through niobium pipe 3 is sealed in the middle part of the porcelain plug 2, the niobium pipe 3 is located in ceramic inner pipe 1 One end is welded with electrode 4, and the end face of the porcelain plug 2 being located inside ceramic inner pipe 1 is provided with shrinkage pool, the shrinkage pool of the porcelain plug 2 Bottom surface and side hot melt be attached with sodium amalgam surface layer 5.

At the inner wall of ceramic inner pipe 1 because with cool ambient air contact heat-exchanging, near zone temperature is relatively low, and is in Marginal position, electrode 4 are not easy to flow through fringe region in the thermal current process of circulation caused by radiating, therefore, the both ends of ceramic inner pipe 1 Temperature is relatively low at inner wall.The sodium amalgam surface layer 5 of the present embodiment heats the shrinkage pool for being attached to the porcelain plug 2 of 1 one end of ceramic inner pipe Interior, unlike the prior art, sodium amalgam surface layer 5 will not be close to the inner wall of ceramic inner pipe 1, and close to the axis of ceramic inner pipe 1 Line position, temperature is relatively high, is conducive to the evaporation of sodium amalgam surface layer 5.

Meanwhile the spill design of porcelain plug 2, so that using the longevity far from the electrode 4 of high temperature at the sealing-in of porcelain plug 2 and niobium pipe 3 Life length；And the outer wall of porcelain plug 2 is longer, and the sintering area of ceramic inner pipe 1 and porcelain plug 2 becomes larger, and connects stronger.

The junction of the porcelain plug 2 and niobium pipe 3 is provided with weldering mud 6, has good sealing performance.

The outer wall of the ceramic inner pipe 1 is along the circumferential direction coated there are two wire coil 7, described two 7 edges of wire coil The axial center point of ceramic inner pipe 1 is arranged symmetrically；The outer wall of the ceramic inner pipe is coated with a wires 8 along axial.Metal Coil 7 and metal wire 8 play the role of helping high colour developing high-pressure sodium lamp starting.

Claims

1. a kind of high colour developing high-pressure sodium lamp including ceramic inner pipe (1) and is sintered two porcelain plugs (2) at ceramic inner pipe (1) both ends, Through being sealed with niobium pipe (3) in the middle part of the porcelain plug (2), one end that the niobium pipe (3) is located in ceramic inner pipe (1) is welded with electrode (4), it is characterised in that: ceramic inner pipe (1) the internal end face that is located at of the porcelain plug (2) is provided with shrinkage pool, the porcelain plug (2) The bottom surface of shrinkage pool and side hot melt are attached with sodium amalgam surface layer (5).

2. high colour developing high-pressure sodium lamp according to claim 1, it is characterised in that: the connection of the porcelain plug (2) and niobium pipe (3) Place is provided with weldering mud (6).

3. high colour developing high-pressure sodium lamp according to claim 1 or 2, it is characterised in that: the outer wall edge of the ceramic inner pipe (1) There are two wire coil (7) for circumferencial direction coating；The outer wall of the ceramic inner pipe is coated with a wires (8) along axial.

4. high colour developing high-pressure sodium lamp according to claim 3, it is characterised in that: described two wire coils (7) are along ceramics The axial center point of inner tube (1) is arranged symmetrically.