CN206236644U - Discharge lamp - Google Patents

Abstract

The utility model provides a kind of discharge lamp that can suppress poor starting.The discharge lamp of implementation method radiates ultraviolet, and the Discharging lamps and lanternses are standby：There is the sealing that a pair of electrodes is embedded with mode opposite each other, and the gas-tight container that inside is airtightly sealed by the sealing at two ends；Enclose the mercury and rare gas in the inside of the gas-tight container；It is arranged at the lead of the side opposite with the gas-tight container of the pair of electrode；The conducting film for being arranged at the outer surface of the sealing and being connected with the lead.

Description

Discharge lamp

Technical field

Implementation method of the present utility model is related to a kind of discharge lamp.

Background technology

For example, disclose one kind being used as in field of liquid crystal panel manufacture or print field to shone thing irradiation ultraviolet radiation The discharge lamp of the light source to be exposed, solidify, dry etc..

Patent document 1：Japanese Unexamined Patent Publication 2009-259790 publications

It is well known that discharge lamp does not have and is produced because of the excitation of natural light in the case where long-time is positioned over dark place Raw initiating electron, thus time untill reaching dielectric breakdown can poor starting elongated or that lamp can be produced, i.e., it is so-called black Dark starting characteristic deteriorates.In order to improve dark starting characteristic, can using first lighted before lamp is lighted secondary light source or The method of the relatively low emitter material of work function is coated with the electrode coil portion of lamp.But, so may exist lack for The problem in the space of setting secondary light source, or, emitter material splashes and causes to sew with luminous tube reaction, or and emitter stage Between reacting part turn into high temperature and cause luminous tube melanism.

The content of the invention

Implementation method of the present utility model provides a kind of discharge lamp for suppressing poor starting.

The discharge lamp of implementation method of the present utility model radiates ultraviolet, and the Discharging lamps and lanternses are standby：Have with that at two ends This opposed mode is embedded with the sealing of a pair of electrodes, and the gas-tight container that inside is airtightly sealed by the sealing；Envelope Enter the mercury and rare gas of the inside of the gas-tight container；It is arranged at the opposite with the gas-tight container of the pair of electrode The lead of side；The conducting film for being arranged at the outer surface of the sealing and being connected with the lead.

According to implementation method of the present utility model, using the teaching of the invention it is possible to provide a kind of discharge lamp of suppression poor starting.

Brief description of the drawings

Fig. 1 is illustrative for the schematic diagram of the discharge lamp involved by the 1st implementation method.

Fig. 2 is the enlarged diagram of the sealing 16 of the discharge lamp 1 involved by the 1st implementation method.

Fig. 3 (a), Fig. 3 (b) and Fig. 3 (c) are for illustrating that the discharge lamp 1 involved by the 1st implementation method suppresses to start not The schematic diagram of good situation.

Fig. 4 is illustrative for the schematic diagram of the variation of the discharge lamp 1 involved by the 1st implementation method.

Fig. 5 be represent discharge lamp 1 involved by the 1st implementation method with conducting film 60 when and without conducting film 60 When, the figure of the result of the difference of the startup voltage (V) of conducting film 60 and lead 28 when being connected and when not connected.

In figure：1- discharge lamps, 10- gas-tight containers, 12- discharge spaces, 14- mercury, 16- sealings, 20- electrodes, 22- axles Material, 24- coils, 26- paillon foils, 28- leads, 30- pedestals, 40- wirning harnesses, 60- conducting films, 70- metallic conductors.

Specific embodiment

Discharge lamp involved by embodiments described below radiates ultraviolet, and the Discharging lamps and lanternses are standby：Have at two ends The sealing of a pair of electrodes, and the gas-tight container that inside is airtightly sealed by sealing are embedded with mode opposite each other；Envelope Enter the mercury and rare gas of the inside of gas-tight container；It is arranged at the lead of the side opposite with gas-tight container of a pair of electrodes； The conducting film for being arranged at the outer surface of sealing and being connected with lead.

According to present embodiment, poor starting can be suppressed.

Also, in the discharge lamp involved by embodiments described below, conducting film connects via metallic conductor and lead Connect.

According to present embodiment, can more reliably suppress poor starting.

Also, in the discharge lamp involved by embodiments described below, conducting film extends to lead.

According to present embodiment, can more reliably suppress poor starting.

Hereinafter, with reference to the accompanying drawings of the various embodiments of the utility model.

(the 1st implementation method)

Below, the discharge lamp 1 with reference to involved by Fig. 1 illustrates the 1st implementation method.Discharge lamp 1 is shown in Fig. 1.

As shown in figure 1, the discharge lamp 1 involved by present embodiment has：Gas-tight container 10, a pair of discharge electrodes 20,20.

In the present embodiment, exemplified with the implementation method that high pressure mercury arc lamp has been used as discharge lamp 1.

Gas-tight container 10 is formed as straight tube-like, has discharge space 12 in the inside of gas-tight container 10.Also, by gas The two ends of close container 10 form sealing 16,16, discharge space 12 are remained airtight.Gas-tight container 10 is by through ultraviolet Material is made, for example, be made up of quartz glass.The external diameter of gas-tight container is 25mm, and total length is 1260mm.

By applying electric power from a pair of discharge electrodes 20,20 to discharge space 12, make inclosure in the mercury 14 of discharge space 12 It is (not shown) with rare gas luminous.Discharge space 12 is configured to internal diameter for example, 22mm, length of illumination (sparking electrode 20,20 The distance between) it is, for example, 1100mm.

Mercury 14 is enclosed in discharge space 12, and by the outside electric power for applying from discharge lamp 1, is radiated for example The ultraviolet of 254nm, 365nm.Also, when electric power is applied with from the outside of discharge lamp 1, mercury 14 helps to maintain to discharge. When not being fed with electric power on discharge lamp 1, mercury 16 in gas-tight container 10 most of existing in liquid form and a part with gas Body form is present.The enclosed volume of mercury is, for example, 0.5~3.0 (mg/cm³)。

Rare gas helps lend some impetus to electric discharge when discharge lamp 1 starts, and contributes to maintain to discharge after electric discharge starts. The inclosure pressure of rare gas is, for example, 1~10 (kPa) under conditions of 25 DEG C.In addition, rare gas can be xenon, argon Any one gas in gas, neon, or can also be two or more mixed gas.

Sealing 16,16 is formed at the two ends of discharge space 12.Sealing 16,16 is by quartzy with the identical of gas-tight container 10 Glass is made.After sparking electrode 20,20 to be arranged at desired position, by using gas (not shown) under a reduced pressure The so-called collapsed seal that the melting plants such as body burner are melted and sealed forms sealing 16,16.In addition, sealing 16th, 16 can also be made up of quartz glass different from gas-tight container 10 etc..Also, can also be by based on pliers (not shown) Sealing 16,16 is formed Deng the so-called pinch seal of shaped device.The length of sealing 16,16 is, for example, 75mm.In sealing The outer surface in portion 16,16 is formed with conducting film 60.In addition, describing conducting film 60 in detail below.

A pair of discharge electrodes 20,20 will imported into discharge space 12 from the outside electric power for applying to come of discharge lamp 1, so that Arc discharge is produced in discharge space 12.A pair of discharge electrodes 20,20 is arranged to a part and is embedded in sealing 16,16, and And the both ends of discharge space 12 are arranged in mode opposite each other.A pair of discharge electrodes 20,20 has：Axial wood 22,22；Line Circle 24,24；Paillon foil 26,26, lead 28,28.

Axial wood 22,22 is used to apply electric power to discharge space 12.One end of axial wood 22,22 is prominent to discharge space 12, separately One end is embedded in sealing 16,16.Also, it is provided with coil on one end prominent to the side of discharge space 12 of axial wood 22,22 24、24.In addition, the other end of axial wood 22,22 is connected by welding with paillon foil 26,26.Axial wood 22,22 is for example made up of tungsten.

Coil 24,24 is arranged at a side of axial wood 22,22, and coil 24,24 is put from the front end of the axial wood 22,22 in electric discharge Temperature is penetrated, so that the temperature for suppressing axial wood 22,22 rises.One end of coil 24,24 is arranged at a side of axial wood 22,22 (i.e., The side of discharge space 12), the other end is arranged at the another side of axial wood 22,22.Coil 24,24 is for example made up of tungsten.

Paillon foil 26,26 is embedded in sealing 16,16 and is sealed by sealing 16,16, so as to gas-tight container 10 be remained It is airtight.The other end welding of one end and axial wood 22,22 of paillon foil 26,26, the other end of paillon foil 26,26 and the one of lead 28,28 End welding, and paillon foil 26,26 is embedded in sealing 16,16.Paillon foil 26,26 is for example made up of molybdenum.

A part for lead 28,28 is embedded in sealing 16,16, and lead 28,28 electrically connects the interior of gas-tight container 10 Portion and wirning harness 40,40.One end of lead 28,28 and paillon foil 26,26 are welded, and the other end is connected with wirning harness 40,40.Lead 28th, 28 for example it is made up of molybdenum.

Pedestal 30,30 be arranged at gas-tight container 10 sealing 16,16, lead 28,28 and wirning harness 40,40 it is outer Week, for preventing the connecting portion between lead 28,28 and wirning harness 40,40 from exposing.Pedestal 30,30 is for example made up of ceramics. In addition, in order that the chimeric of pedestal 30,30 and gas-tight container 10 more firmly, can for example use adhesive in pedestal 30,30 A part for fixed pedestal 30,30 and sealing 16,16.

Wirning harness 40,40 is used to be electrically connected to power circuit (not shown) the inside of gas-tight container 10.Wirning harness 40,40 One end be connected with the other end of lead 28,28, the other end of wirning harness 40,40 and power circuit etc. are connected.Wirning harness 40,40 For example it is made up of annealed copper wire.In addition, in order to easily connect wirning harness 40,40 and power circuit, in the other end of wirning harness 40,40 Terminal (not shown) can be set.

The discharge lamp 1 of said structure is for example with so-called air cooling mode, i.e. obtain power supply and point in discharge lamp 1 The cooling wind that is conveyed using pressure fan (not shown) etc. when bright and cooled down.In addition, discharge lamp 1 can also use so-called Water-cooling pattern, i.e. the water collar (not shown) set using the mode for surrounding discharge lamp 1 covers discharge lamp 1, and using stream The liquid (specifically water) crossed inside water collar is cooled down.

Here, being described in more details to conducting film 60 with reference to Fig. 2.Fig. 2 is electrode 20, sealing 16 and lead 28 Enlarged diagram.In addition, in fig. 2, for the position of clear and definite electrode 20, depict only a part for conducting film 60.

One end of conducting film 60 is arranged near the position opposed with the axial wood 22 of electrode 20 of gas-tight container 10.Also, The other end of conducting film 60 is throughout whole sealing 16.In addition, the other end of conducting film 60 is preferably electrically connected with lead 28.Pass through Conducting film 60 is electrically connected with lead 28, the poor starting caused by dark starting characteristic can be suppressed.Conducting film 60 is for example Make its drying and formed by being coated with after tin oxide (SnO).In addition, conducting film 60 can also be played as so-called insulation film Effect, i.e. conducting film 60 is incubated to the two ends of gas-tight container 10, so that may enter into sealing 16,16 and Mercury solution body in the minim gap produced between electrode 20 etc. heats up, and it is again returned to discharge space 12.In addition, conducting film 60 are not limited to tin oxide (S nO).Conducting film 60 for example can be comprising tin oxide (SnO), platinum (Pt), golden (Au), cesium oxide (CsO), in zinc oxide (ZnO), magnesia (MgO) any one or it is various.

Here, suppressing poor starting by setting conducting film 60 with reference to Fig. 3 (a), Fig. 3 (b) and Fig. 3 (c) explanation Mechanism.Fig. 3 (a), Fig. 3 (b) and Fig. 3 (c) are the schematic diagrames for illustrating the situation for suppressing poor starting.In addition, in Fig. 3 In (a), Fig. 3 (b) and Fig. 3 (c), for the mechanism clearly discharged, a part for conducting film 60 is depict only.

If electric power is supplied to discharge lamp 1 from power circuit (not shown), such as Fig. 3 (a) is shown, at a time electrode 20 Axial wood 22 and the positively charged simultaneously of coil 24, and the also positively charged of conducting film 60.Due to the positively charged of conducting film 60, thus as schemed Shown in 3 (b), the internal polarization of discharge vessel 10 and it is negatively charged.Now, in discharge vessel 10, due to the electricity that there is positively charged Pole 20 and electronegative discharge vessel 10, thus electric discharge is produced between electrode 20 and discharge vessel 10, the electric discharge is held in electric discharge Transmitted in device 10 and reach another electrode 20, ultimately form the electric discharge from an electrode 20 to another electrode 20.Therefore, it is excellent The outer surface for being selected in the sealing 16 of discharge lamp 1 has the conducting film 60 being connected with lead.

As described above, can provide a kind of discharge lamp according to present embodiment, the discharge lamp is due to the sealing in discharge lamp 1 The outer surface in portion 16 has the conducting film 60 being connected with lead 28, thus is easily produced from an electrode when discharge lamp 1 starts 20 arrive another 20 electric discharge such that it is able to suppress poor starting.

Also, lead 28 in the above-described embodiment, is extended to due to being arranged at the conducting film 60 of discharge lamp 1, therefore is put Polarization based on conducting film 60 when electric light 1 starts and be more prone to produce between an electrode 20 and another electrode 20 Electric discharge, it is thus possible to suppress poor starting.

(variation of first embodiment)

The variation of the 1st implementation method is shown in Fig. 4.Fig. 4 is the schematic diagram of the variation for representing the 1st implementation method.

Figure 4 illustrates the example that conducting film 60 is connected via metallic conductor 70 with lead 28.Metallic conductor 70 is electrically connected Connect conducting film 60 and lead 28.Metallic conductor 70 is for example made up of nickel or molybdenum.With the situation phase that conducting film 60 extends to lead 28 Than, conducting film 60 and lead 28 being connected by with metallic conductor 70, can more reliably be electrically connected.

As described above, providing a kind of discharge lamp according to present embodiment, the discharge lamp is due to the sealing 16 in discharge lamp 1 Outer surface be provided with the conducting film 60 being connected with lead 28 via metallic conductor 70, therefore easily produced when discharge lamp 1 starts The raw electric discharge from an electrode 20 to another electrode 20, so as to suppress poor starting.

Also, in the above-described embodiment, by make to be arranged at the conducting film 60 of discharge lamp 1 via metallic conductor 70 with draw Line 28 is connected such that it is able to is ensured relatively reliable electrical connection, thus can be provided a kind of electric discharge that can suppress poor starting Lamp.

Here, to discharge lamp 1 when with conducting film 60 and without conducting film 60 when, conducting film 60 is connected with lead 28 When and it is not connected when the difference of startup voltage (V) studied.Appreciation condition is as follows.In addition, it is by inciting somebody to action to start voltage (V) Lamp is positioned over dark place 1 day, and the high voltage power supply HSX-3R5 manufactured using pinidine Micronics Inc. determining dielectric breakdown voltage and Evaluate.

Discharge lamp 1 (general)：Internal diameter=23mm, the length=1100mm of discharge space, discharge lamp 1 entire length= 1260mm, lamp start voltage=600V, lamp current=10A, lamp power=16kW.

Conducting film 60 (comparative example 2, embodiment 1, embodiment 2)：Tin oxide (SnO).

Embodiment 1：Conducting film 60 extends to lead 28 and is connected with lead 28.

Embodiment 2：Metallic conductor 70 is set so that conducting film 60 and lead 28 are connected.

Compare lamp number：Each 10.

The results are shown in Fig. 5.Be clear that by Fig. 5, compared with comparative example 1,2, embodiment 1,2 startup voltage it is average Value reduces 200V.That is, compared with comparative example 1,2, voltage (V) reduction 200V can be started in embodiment 1,2, therefore, Compared with comparative example 1,2, embodiment 1,2 can more suppress poor starting.

In addition, in the above-described embodiment, discharge lamp 1 is the structure of so-called high pressure mercury arc lamp, however, it can be and removes The so-called metal halide lamp of metal halide is also sealed with outside mercury and rare gas.

More than, some implementation methods of the present utility model are illustrated, but these implementation methods are merely illustrative, The intention of utility model scope is not limited.These new implementation methods can be implemented in other various modes, not depart from In the range of the utility model objective, various omissions, displacement, change etc. can be carried out.These implementation methods or its deformation are belonged to In scope of the present utility model or objective, and it is also contained in the utility model described in technical scheme and its equivalent scope It is interior.

Claims (3)

1. a kind of discharge lamp, it radiates ultraviolet, and the discharge lamp is characterised by possessing：

Have at two ends and the sealing of a pair of electrodes be embedded with mode opposite each other, and inside by the sealing airtightly The gas-tight container of sealing；

Enclose the mercury and rare gas in the inside of the gas-tight container；

It is arranged at the lead of the side opposite with the gas-tight container of the pair of electrode；

The conducting film for being arranged at the outer surface of the sealing and being connected with the lead.

2. discharge lamp according to claim 1, it is characterised in that

The conducting film extends to the lead.

3. discharge lamp according to claim 1, it is characterised in that

The conducting film is connected via metallic conductor with the lead.