CN1136706A - Double glass shell halogen tungsten lamp - Google Patents

Abstract

The present invention relates to an electro-optic light source for lighting equipment. The invented halogen tungsten lamp uses a double glass shell structure, and said two glass shells are not indirectly melt-joined, so that this structure not only reduces the thermoconductive loss of the tube wall of its internal tube, but also can ensure that when using said halogen tungsten lamp, the temp. of tube wall of its internal tube can attain the required temp. for halogen tungsten circulation under the conditions of low environment temp., directly contacting with water and water-cooling lamp tube so as to make said light source work under the normal condition. It is simple in manufacturing process and low in cost.

Description

The tungsten halogen lamp of two glass bulbs

The present invention relates to a kind of electric light source in the lighting apparatus.

Tungsten halogen lamp is a kind of electric light source with extensive use.It should be used for illumination requirement height, color rendering better or require the place of light modulation, as gymnasium, the great hall, banquet hall etc.Its colour temperature is particularly useful for the studio lights of color TV.It is compared with incandescent lamp, efficient height, little, the power concentration of volume, thereby the light fixture size is dwindled, be convenient to the control of light.

Tungsten halogen lamp is to make after it is found that the principle of halogen tungsten circulation nineteen fifty-nine.Its principle charges into a certain amount of halogen exactly in bulb, at a certain temperature, generally need 250 ℃ to 700 ℃, and the tungsten atom that tungsten filament is evaporated on the glass shell in halogen and the bulb is combined to tungsten halide gas.And in lamp, carrying out gaseous exchange, tungsten halide is diffused near the tungsten filament again.Yin Wendu is higher near tungsten filament, and tungsten halide resolves into halogen and tungsten atom, and tungsten atom is just got back on the filament, halogen get back to again the cell-shell place again with the other tungsten atom chemical combination of evaporation in its place, reciprocation cycle is endlessly.This just is called the halogen tungsten circulation.Incandescent lamp does not have halogen tungsten circulation, and lamp is opened the vaporized tungsten atom in back just on the inwall attached to bulb, and glass shell is turned black, and has reduced the light transmission rate at cell-shell place, influences lighting effect; Filament comparatively fast fuses simultaneously, has shortened the burning-point life-span.

Because necessarily requiring the halogen tungsten circulation during tungsten halogen lamp work can normally carry out, one of its condition is exactly that the temperature of guaranteeing bulb shell or lamp tube wall can reach 250 ℃～700 ℃, can guarantee that just halogen tungsten circulation normally carries out, therefore in illustrating with maintenance, the use of tungsten halogen lamp generally all points out, do not allow to adopt any artificial cooling provision, as electric fan blow, water pouring etc.Tungsten halogen lamp because the architectural feature of this patent is that light fixture can be intake, utilizes water directly to contact with light source and reaches cooling purpose as the light source of the lamp under water of Chinese patent ZL94213484.2 the time.At this moment, because the tungsten halogen lamp tube wall directly contacts with water, water temperature is lower usually, water is again heat carrier, will make the temperature at tube wall place not reach the required temperature (250 ℃～700 ℃) of halogen tungsten circulation, thereby destroyed the halogen tungsten circulation, the tungsten that is deposited on the tube inner wall place can not be turned back on the filament by the halogen tungsten circulation again.Like this, turn black because of the deposition of tungsten in the tube wall place of tungsten halogen lamp, and tungsten filament attenuates, and has both influenced illumination, has shortened the life-span of lamp again.

The drawback that occurs when being used as underwater lighting at above-mentioned tungsten halogen lamp, the objective of the invention is, solve when working under the environment that fluorescent tube is lower in temperature, thermal conductivity is good again, halogen tungsten circulation can ruined problem, thereby designs the halogen tungsten light source that a kind of novel underwater lighting that can be used for above-mentioned patent is used.

Fig. 1,2,3 shows three kinds of structure diagrams of the tubular tungsten halogen lamp of illumination use usually.Fig. 1 is a folder formula electrode.Fig. 2 is a top formula electrode, its structure of only drawing among the figure near the electrode place, and all the other are with the structure of folder formula electrode among Fig. 1.Fig. 3 is the pins type electrode.In these three figure, parts [1] are quartz glass tube, and parts [2] are tungsten filament, and parts [3] are molybdenum sheet, and parts [4] are electrode, and parts [5] are molybdenum filament, i.e. seal wire.The operation principle of these three kinds of tungsten halogen lamps is identical, just face shaping with (or) electrode form is different.

Also can keep good halogen tungsten circulation under the environment that temperature is lower in order to maintain, heat conduction is good again, the present invention is packaged in normally used tungsten halogen lamp in another quartz glass shell, be outside bulb shell [6], whole interior pipe [1] all is enclosed in the outside bulb shell [6], sees shown in Figure 4.From Fig. 4 as seen, the present invention is the seal wire that picks out from molybdenum sheet [3] of tungsten halogen lamp molybdenum filament [5] and outside bulb shell [6] sealing-in, electrode [4] is made in the end of outside bulb shell [6].Like this, only make supportive connector [7] between interior pipe [1] and the outside bulb shell [6], do not have the coupling part of directly making material between interior pipe [1] and the outside bulb shell [6] with glass with molybdenum filament [5].Some makes U-shaped or S shape supportive connector [7], and purpose is to make it to become temperature difference compensation device [8], and is not different or cause squeeze crack because of the temperature difference because of hot coefficient of dilatation to guarantee interior pipe [1] and outside bulb shell [6].Between outside bulb shell and interior pipe, be evacuated, or be evacuated and charge into a certain amount of inert gas, guarantee normally carrying out of halogen tungsten circulation to reduce heat conduction loss.The architectural feature of Here it is tungsten halogen lamp of the present invention.

Because the present invention has adopted the halogen tungsten light-source structure of two glass bulbs, therefore when this light source being done the underwater lighting use, light source directly contacts with water also can operate as normal.Has been pumped into certain vacuum degree again because of having between outside bulb shell, outside bulb shell and interior pipe, or has been evacuated and charges into a certain amount of inert gas, reduced heat conducting loss, guaranteed that light source opens inner tubal wall place, back temperature and halogen tungsten is circulated normally carry out.

Though shown in Fig. 4 is the structure that realizes the tungsten halogen lamp of of the present invention pair of glass bulb when being example with the tubular tungsten halogen lamp of folder formula electrode, the tungsten halogen lamp of all the other forms also just adds an outside bulb shell [6] again.And being material with the molybdenum filament, outside bulb shell [6] makes it to join with interior pipe [1] by the supportive connector [7] of the temperature difference compensation device [8] of S shape or U-shaped structure.The structure of the halogen tungsten lamp with double-layer glass bulb of top formula electrode, pins type electrode and structure shown in Figure 4 are identical, just the electrode form difference.Tungsten halogen lamp (see figure 3) for common pins type electrode, when adding outside bulb shell [6], its supportive connector [7] and temperature difference compensation device [8] thereof, must make identical shaped and size two, with really reach be strutting piece be again the temperature difference compensation device, otherwise can cause because of expanding or shrinking and manage the tiltedly askew of [1] position in inconsistent the appearance.And for tubular tungsten halogen lamp (seeing Fig. 1,2), the supportive connector [7] between outside bulb shell [6] and the interior pipe [1] only needs an end to have the temperature difference compensation device [8] of a U-shaped or S shape to get final product, and the other end only need be made the linearity (see figure 4), with simplified processing process.Because strong thermal shock when the cell-shell of tungsten halogen lamp is wanted to bear higher temperature and switch is so their most adopting quartz glass or dioxide-containing silica are at (the Bai Ke-Vycor) glass making of the high silica more than 96%.Also there is the part tungsten halogen lamp to make with hard glass.The amount high and low and the adding inert gas of degree of being evacuated depends on the pressure of external environment and the quality of heat conduction between outside bulb shell [6] and the interior pipe [1].Principle is to guarantee normally carrying out of light source halogen tungsten circulation, guarantees that again outside bulb shell [6] can not crushed by external environment pressure.Concerning the electric bulbs factory that produces the tungsten halogen lamp ability was generally arranged, the tungsten halogen lamp of processing this structure was easily to realize.

The advantage of this invention is, adopts the two glass bulb lamps of this kind to do the lamp source, just can solve the problem of current nuclear power station underwater illuminating device more preferably in conjunction with Chinese patent ZL94213484.4.And, because the connection between the inner and outer pipes of the present invention is not direct welding between glass, but adopt the supportive connector [7] that has U-shaped or S shape compensator [8] to connect, simplified processing technology.Because the operation of the direct welding of inner and outer pipes is difficult to grasp: welding at high temperature, service speed are slow excessively, can make the molybdenum sheet oxidation and cause molybdenum sheet cracked; Service speed is too fast, often causes welding incomplete, thereby when causing the tungsten halogen lamp of this pair of glass bulb to put into water to throw light on, bursts at incomplete weld easily.

October nineteen ninety-five, test through Changshu City radiotechnology Application and Development research institute: (1) is as utilizing the fitting structure of Chinese patent ZL94213484.4, adopt the tubulose tungsten halogen lamp of single glass bulb to do the lamp source, open less than 12 hours in water, the deposition of a large amount of tungsten just appears in tube inner wall; (2) but if utilize the tungsten halogen lamp of two glass bulbs, any deposition of tube inner wall tungsten does not appear in test under these conditions; (3) test shows fully, because the method that adopts the present invention to propose, interior pipe (luminous element) [1] is suspended within the outside bulb shell (muff) [6] fully, the drawback of having avoided interior pipe [1] and outside bulb shell [6] directly to adopt glass sealing easily to cause welding not exclusively to cause weld to burst by seal wire (molybdenum filament [5]).

Till at the bottom of October 18 to nineteen ninety-five nineteen ninety-five, three kinds of 6 of specifications utilize aforementioned implementation method to implement halogen tungsten lamp with double-layer glass bulb of the present invention (2 1000 watts of iodine-tungsten lamps, 2 2000 watts of iodine-tungsten lamps, 2 1000 watts of bromine tungsten filament lamps), the light fixture (Chinese patent ZL94213484.4) that utilizes fluorescent tube and water directly to contact, put into the Chinese seat of honour voluntarily the Qinshan nuclear power plant of design-build do underwater lighting and use.Use is the result show: good brightness has been clear that with this lamp and the distortion and the numbering of fuel assembly of the blackout of burning to the important function of having reloaded of nuclear fuel, has played facilitation to fulfiling charging ahead of schedule.

Usually following three kinds of methods are adopted in the elevated-temperature seal of solution used in nuclear power station Under water lamp: (1) adopts a plurality of low wattage light sources to alleviate the problem of elevated-temperature seal, and as the incandescent lamp of the low wattage (below 500 watts) of Japan's employing, shortcoming is that luminous concentrated, illumination reduces; (2) adopt large volume lamp chamber, reduce the temperature at lamp outer casing sealing surface place, as the lamp of Switzerland Sulzer company, shortcoming is the light fixture heaviness, has strengthened the idle space in expensive nuclear power station pond; (3) adopt the method for giving lamp device under the hot water, alleviate the strong thermal shock in sealing surface place when lamp is opened under water, as the Chinese Daya Bay nuclear power plant lamp under water of French technology, just alleviate elevated-temperature seal with this method, shortcoming is because of need gave heat 4 hours, and lamp can not be with driveing with the pass, to using very inconvenience.Seat surplus the nuclear-power reactor that is moving in the world at present has 500.If every nuclear power station all uses the halogen tungsten lamp as light source of of the present invention pair of glass bulb, in conjunction with the fitting structure of Chinese patent ZL94213484.4, just can solve the difficult problem of current its light fixture elevated-temperature seal of nuclear power station underwater illuminating device preferably again.

Because it is the tungsten halogen lamp volume is little more than the incandescent lamp with wattage, general less than the latter's 10.When therefore adopting tungsten halogen lamp to make the underwater lighting light source, the light fixture volume is very little, and this helps processing and uses.In sum, the present invention only uses in the nuclear industry field and just has very wide prospect.

Tungsten halogen lamp provided by the invention, both can directly put into water works, also can be used for using in ambient temperature is low, heat conduction condition the is good place, use as freezer or cold place, also can use the place of local exhaust cooling light fixture to use in the air-conditioning place in order to reduce refrigeration duty, be particularly useful for doing the portable lamp of high-power illumination under water that directly contacts and use with water.

Claims (3)

1. the tungsten halogen lamp of two glass bulbs is made up of with seal wire (being molybdenum filament [5]) and electrode [4] with tungsten matter support, molybdenum sheet [3] fluorescent tube, the tungsten filament [2] of quartz glass or vagcor or hard glass system.The fluorescent tube that it is characterized in that above-mentioned glass is double-deck, promptly interior pipe [1] and outside bulb shell [6]; Whole in the pipe [1] all by sealing-in in outside bulb shell [6], not the direct meltbility connection between glass between interior pipe [1] and the outside bulb shell [6], but connect by the supportive connector [7] of the temperature difference compensation device [8] that has U-shaped or S shape, this strutting piece [7] just seal wire is suspended within the outside bulb shell [6] interior pipe [1] fully.

2. press the tungsten halogen lamp of described pair of glass bulb of claim 1, as tubular tungsten halogen lamp, it is characterized in that the supportive connector [7] between outside bulb shell [6] and the interior pipe [1] only needs an end have the temperature difference compensation device [8] of a U-shaped or S shape to get final product, the other end only need be made linearity; As the tungsten halogen lamp of common pins type electrode, it is characterized in that supportive connector [7] between outside bulb shell [6] and the interior pipe [1] and temperature difference compensation device [8] thereof must be forming shape and measure-alike two.

3. by the tungsten halogen lamp of described pair of glass bulb of claim 1, it is characterized in that being pumped into certain vacuum degree between interior pipe [1] and the outside bulb shell [6], or charge into a certain amount of inert gas again after being pumped into certain vacuum degree.

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