The supporting structure of compact-type high-pressure sodium vapor lamp
Technical field
The utility model relates to the major part in high-pressure sodium lamp, particularly power below 200W, and overall dimensions are little, the supporting structure of the compact-type high-pressure sodium vapor lamp of single-ended use.
Background technology
In the illumination application of some special high-intensity gas discharge lamps, in flood light, spotlight, gardens use lamp etc. and required localized lighting place, for with light fixture and reflector is fine coordinates, need be to the bulb of bulb, relative standard's type, its diameter and length will be done dwindling by a relatively large margin, carry out miniaturization processing.As 46 millimeters of the high light effect sodium lamp to 150W, standard-type lamps bulb diameters, 210 millimeters of length, and the diameter of compact bulb is less than 25 millimeters, length is less than 140 millimeters.
Under bulb model and the certain prerequisite of power, the heat producing when bulb work is substantially constant, now require the size of bulb to reduce, for guaranteeing the useful life of bulb and realizing better illuminating effect, except need are selected the better material of heat resistance, also need the structure of compact-type high-pressure sodium vapor lamp to make improvements.
Number of patent application 201110384088.8 " a kind of high light effect sodium lamp with integral support ", only disclosing a kind of large and small support is integrated support, thereby reduced pad, increased the reliability of work, but it also needs to install additional elasticity connection bracket and reduces blasted pipe phenomenon.
Summary of the invention
Technical problem to be solved in the utility model is: the supporting structure that a kind of compact-type high-pressure sodium vapor lamp is provided, this supporting structure is installed in high-pressure sodium lamp, its volume is significantly dwindled, and luminous element reaches accurate location dimension and can at higher temperature, work, can avoid again between each part affecting the problem of quality because sealing-off, bombing occur too greatly the temperature difference, there is better illuminating effect, improved the reliability of work.
The technical scheme in the invention for solving the above technical problem is: the supporting structure of compact-type high-pressure sodium vapor lamp, comprise main support, assistant support in cell-shell, the lower end of main support, assistant support is connected with lamp holder, one side of described main support upper end is bent, and the inwall tight fit of upper end and cell-shell, the upper end of described electric arc tube is connected on main support, and uses nickel strap niobium pipe, the main support of described electric arc tube upper end are welded into the entirety flexibly connecting; There is subframe bending on the top of described assistant support, and assistant support inserts in the niobium pipe of electric arc tube lower end, with lower nickel strap, niobium pipe, assistant support is welded into the entirety flexibly connecting.
Compared with prior art, the utility model has the advantage of: this support is installed in high-pressure sodium lamp, is made its volume-diminished be compact miniaturization, the condition of high temperature can bear and overcome bulb work time.There is downward bending the end of major and minor support and the cooperation place of cell-shell and niobium pipe that form bulb rack, avoid scratching the inwall of cell-shell, niobium pipe, also adopt upper and lower nickel strap bundling type to be wrapped in the welding manner flexibly connecting on niobium pipe and major and minor support, utilize the good welds performance between nickel strap and niobium pipe, molybdenum rod, just guarantee the reliability of bulb welding, rigid connection between each part and inconsistent because of the coefficient of expansion are avoided, the cold and hot temperature difference is too large, cause welding position sealing-off or bombing, make bulb early failure, quality problems occur.The upper and lower end of this electric arc tube is connected into entirety by niobium pipe and major and minor support, guarantee that electric arc tube and cell-shell are on same center line, avoided again the monolateral work of electric arc tube cause cell-shell be heated inhomogeneous and occur blasted pipe phenomenon, because of its miniaturization, greatly expand the scope of application of high-pressure sodium lamp, and improve stability, the reliability of work, the useful life of improving product.
Accompanying drawing explanation
Fig. 1, use state cutaway view of the present utility model.
Fig. 2, structural representation of the present utility model.
The structural representation of Fig. 3, assistant support.
Fig. 4, electric arc tube, niobium tubular construction schematic diagram.
The structural representation of Fig. 5, main support.
The vertical view of Fig. 6, Fig. 5.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
There is symmetrical niobium pipe 71 at electric arc tube 7 two ends.
The width of main support 6 upper ends and the internal diameter tight fit of cell-shell 8, mainly play supporting and location effect, main support can not rocked in cell-shell, upper end one side has downward bent 61, for the cutting burr that prevents molybdenum rod end scratches quartz glass, have in the middle of upper end arc bend recessed 62, its diameter is consistent with niobium pipe 71 to match.
Assistant support 2 adopts the molybdenum filament quarter bend that is less than niobium pipe 71 internal diameters 1/2 to be converted into, can not adopt the excessive molybdenum rod of diameter, because its one end also needs to be compressed in the middle of cell-shell, otherwise easily make quartz glass explosion, the niobium pipe of wishing again in addition electric arc tube lower end is fixing reliable, guarantee again electric arc tube and cell-shell coaxial line, top has downward subframe bending 21 to be convenient to connect, but will guarantee there is free gap between the curved molybdenum filament of horizontal stroke of niobium pipe 71 ends and assistant support 2.
Insert in the niobium pipe 71 of electric arc tube 7 lower ends the upper end of assistant support 2, tie on assistant support 2 and niobium pipe 71 by lower nickel strap 3, and spot welding is in aggregates, with flexibly connecting between lower nickel strap 3 maintenances and electric arc tube 7, lower end is connected in the molybdenum sheet 9 of conductive seal, then is connected with lamp holder 1 by the outer molybdenum sheet 10 connecting on it.
The niobium pipe 71 of electric arc tube 7 upper ends inserts in the arc bend recessed 62 on main support 6, and use nickel strap 4 and tie on electric arc tube 7 and main support 6, and point is welded into entirety, use flexibly connecting between nickel strap 4 maintenances and electric arc tube 7, its lower end is connected in another molybdenum sheet 9 of conductive seal, is connected with lamp holder 1 by the outer molybdenum sheet 10 connecting on it.
Getter sheet 5 is weldingly fixed on main support 6, when bulb work, absorbs the pernicious gas of emitting in cell-shell 8, guarantees the vacuum degree in cell-shell.
Supporting structure includes main support 6, assistant support 2 and coupled flexibly connects upper and lower nickel strap 4,3.
Above-mentioned supporting structure is arranged on to volume-diminished in the high-pressure sodium lamp of compact, it is the miniaturization of compact-type high-pressure sodium vapor lamp relative standard type sodium vapor lamp, in it, each part required temperature of bearing in the time that bulb is worked is higher, therefore the anti-ability of expanding with heat and contract with cold of each part is stronger, avoided because of the coefficient of expansion of each part inconsistent, the cold and hot temperature difference causes too greatly the sealing-off of welding position, makes bulb early failure generation quality problems.
The temperature-resistant material that this compact sodium vapor lamp adopts, adopt resistant to elevated temperatures molybdenum rod to make support, rather than stainless steel wire, adopt the higher quartz glass of softening temperature to make Lamp bulb case, rather than conventional borosilicate glass, adopt nickel strap flexibility to tie up the welding between form and niobium pipe, molybdenum rod, guaranteed the reliability of welding.
Use this supporting structure, make compact-type high-pressure sodium vapor lamp, high-pressure sodium lamp reaches miniaturization, meets user's different demands, has expanded the scope of application.