CN208753265U - Discharge lamp and ultraviolet lamp - Google Patents
Discharge lamp and ultraviolet lamp Download PDFInfo
- Publication number
- CN208753265U CN208753265U CN201821455035.4U CN201821455035U CN208753265U CN 208753265 U CN208753265 U CN 208753265U CN 201821455035 U CN201821455035 U CN 201821455035U CN 208753265 U CN208753265 U CN 208753265U
- Authority
- CN
- China
- Prior art keywords
- discharge lamp
- electrode
- lamp
- discharge
- electrode axis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Discharge Lamps And Accessories Thereof (AREA)
- Physical Water Treatments (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Discharge Lamp (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
Abstract
The utility model provides the discharge lamp and ultraviolet lamp of a kind of stability that can be improved electric discharge.Discharging lamps and lanterns preparation light pipe and a pair of electrodes involved in embodiment.A pair of electrodes includes electrode axis, and the inside of luminous tube is arranged in one end；Coil is arranged in a manner of the one end for being wrapped in electrode axis.Also, in the case where discharge lamp obtains power supply to produce electric discharge between a pair of electrodes, current density meets 1.91A/mm2Above and 3.67A/mm2Below, wherein current density indicates the ratio between electric current and the sectional area of electrode axis.
Description
Technical field
The embodiments of the present invention is related to a kind of discharge lamp and ultraviolet lamp.
Background technique
In the past, such as the sterilization it has been known that there is a kind of discharge lamp of high voltage as the ballast water treatment in large ship is used
Light source.
Patent document 1: Japanese Unexamined Patent Publication 2009-259790 bulletin
In recent years, the investment electric power of discharge lamp is in increase trend.If putting into the increase of electric power, the temperature of electrode can be risen
Height, thus the melanism of luminous tube is promoted, and will lead to the decline of ultraviolet light illumination, it is possible to can be unable to satisfy the required lamp longevity
Life.Also, if electrode (specifically overstriking electrode axis) is increased to reduce electrode temperature, the formation of arc spot becomes unstable
It is fixed, it is possible to flashing can be generated.Moreover, in the case where high frequency lights discharge lamp, the movement of the arc spot on electrode surface
It becomes easy.In this way, in terms of improving ultraviolet light illumination sustainment rate and improving discharge stability, there are improved spaces.
Summary of the invention
Problem to be solved in the utility model, which is to provide, a kind of can be improved the steady of ultraviolet light illumination sustainment rate and electric discharge
Qualitative discharge lamp and ultraviolet lamp.
Discharging lamps and lanterns preparation light pipe and electrode involved in embodiment.The electrode is arranged in the luminous tube
Portion.The electrode includes electrode axis, and the inside of luminous tube is arranged in one end；Coil, to be wrapped in the one end of electrode axis
Mode be arranged.In the case where discharge lamp obtains power supply, the current density (section of current density expression electric current and the electrode axis
The ratio between product) meet 1.91A/mm2Above and 3.67A/mm2Below.
According to the utility model, the stability of ultraviolet light illumination sustainment rate and electric discharge can be improved.
Detailed description of the invention
Fig. 1 is the figure for indicating discharge lamp involved in embodiment.
Fig. 2 is indicate electrode shaft diameter, electrode axis sectional area involved in embodiment, electric current and discharge lamp various
The figure of relationship between characteristic.
Fig. 3 is the figure for indicating illumination sustainment rate and the relationship between lighting time involved in embodiment.
In figure: 1- discharge lamp, 2- luminous tube, 2a- sealing, 3- electrode, 4- Lighthead assembly, 5- lead, 6- conducting wire, 7- gold
Belong to foil, 31- electrode axis, 32- coil, 100- ignition device.
Specific embodiment
Discharge lamp 1 involved in embodiments described below has luminous tube 2 and a pair of electrodes 3.A pair of electrodes 3 is arranged
In the inside of luminous tube 2.Electrode 3 includes electrode axis 31 and coil 32.The inside of luminous tube 2 is arranged in one end of electrode axis 31.
Coil 32 is arranged in a manner of being wrapped in the one end of electrode axis 31.In power supply to discharge lamp 1 in a pair of electrodes 3,3
Between produce electric discharge in the case where, current density the ratio between the sectional area of electric current and electrode axis 31 (current density expression) satisfaction
1.91A/mm2Above and 3.67A/mm2Below.
Also, in the discharge lamp 1 involved in embodiments described below, the maximum temperature of electrode 3 based on electric discharge
For 2500K or more and 3600K or less.
Also, the point modulation frequency of discharge lamp 1 involved in embodiments described below be 1kHz or more and 200kHz with
Under.
Also, ultraviolet lamp described below has discharge lamp 1 and ignition device 100.Ignition device 100 is to putting
Electric light 1 is powered.
Hereinafter, being illustrated referring to attached drawing to discharge lamp involved in embodiment and ultraviolet lamp.Implementing
In mode, identical symbol is marked to same position, and omit repeated explanation.
(embodiment)
Firstly, being illustrated referring to Fig.1 to the structural example of discharge lamp 1 involved in embodiment.Fig. 1 is embodiment institute
The cross-sectional view for the discharge lamp 1 being related to.
Discharge lamp 1 shown in FIG. 1 is used for example as the sterilization light source of the ballast water treatment of large ship etc..In addition, putting
Electric light 1 is not only limited in the sterilization light source of ballast water treatment, such as is also possible to solid in semiconductor exposure process, ultraviolet light
The drying process of change type ink or ultraviolet curing coating, curing process of ultraviolet curing resin etc. need to pass through ultraviolet light
Carry out light source used in photochemically reactive process.
Also, for example, so-called high-intensity gas discharge lamp such as mercury vapor lamp or metal halide lamp of discharge lamp 1 (HID:
High Intensity Discharge lamp).As shown in Figure 1, discharge lamp 1 involved in embodiment have luminous tube 2,
Electrode 3, Lighthead assembly 4 and lead 5.
Luminous tube 2 is formed as cylindric by the quartz glass with translucency, has space inside it, in the space
It is provided with one end of aftermentioned a pair of electrodes 3.The inert gases such as argon gas and xenon and mercury are sealed in the space.Also,
In the space other than being sealed with inert gas or mercury, the metal halides such as iron, tin, iodine can also be sealed with.
Also, columned sealing 2a is for example formed at the both ends of luminous tube 2.It buries and seals in sealing 2a
There are a part of the other end of electrode 3 (electrode axis 31), a part of conducting wire 6 and metal foil 7.Conducting wire 6 is by aftermentioned lead 5
It is electrically connected with metal foil 7.Metal foil 7 is formed by molybdenum etc..
The both ends of luminous tube 2 are arranged in a pair of electrodes 3 in a manner of toward each other.Electrode 3 has electrode axis 31 and coil
32。
Electrode axis 31 is, for example, the metal parts containing tungsten, and one end of electrode axis 31 configures in the space of luminous tube 2, separately
One end connect with metal foil 7 and is embedded in sealing 2a.Also, it is cased in the other end of electrode axis 31 for keeping electrode
The holding pipe 8 of axis 31.
Coil 32 is wrapped in the one end of the electrode axis 31 in luminous tube 2.Also, coil 32 so that electrode axis 31 one end
Exposed state is wrapped in electrode axis 31.If powering as a result, to a pair of electrodes 3, between the end of electrode axis 31
Generate electric discharge.
Lighthead assembly 4 is bonded for example formed as bottomed cylindrical, also, for example by filling to the inside of Lighthead assembly 4
Component, so that Lighthead assembly 4 and the sealing 2a of luminous tube 2 be made to be bonded together.Lead 5 connect Lighthead assembly 4 outside and
It is internal.Specifically, the configuration of lead 5 the inside of Lighthead assembly 4 one end for example via by welding formed connection
Portion 4a is connect with conducting wire 6, and its other end is connect with ignition device 100.
Ignition device 100 is powered to discharge lamp 1, specifically, ignition device 100 is powered to a pair of electrodes 3.It is specific and
Speech, the alternating current that ignition device 100 connect with power supply (not shown), and the power supply is supplied supply extremely via lead 5
The electrode 3 of discharge lamp 1.
Therefore, ultraviolet lamp (not shown) includes: discharge lamp 1, the ignition device for powering to discharge lamp
100。
By supplying the AC power to come from ignition device 100, the polarity of the electrode 3 of discharge lamp 1 is according to some cycles
Conversion.That is, becoming the point modulation frequency of discharge lamp 1 from the frequency that ignition device 100 is supplied to the AC power of discharge lamp 1.For example,
The point modulation frequency of discharge lamp 1 is 1kHz or more and 200kHz or less.
However, in recent years, the investment electric power of discharge lamp is in increase trend.If putting into electric power to increase, the temperature of electrode axis
It can increase, thus the melanism of luminous tube is promoted, and will lead to the decline of ultraviolet light illumination, it is possible to can be unable to satisfy required lamp
Service life.
In particular, the replacement frequency of discharge lamp depends on the maintenance opportunity of ship in ship etc., therefore it is required that long-term guarantee
The quality of discharge lamp.Moreover, the formation of arc spot becomes unstable, and having can if overstriking electrode axis is to reduce electrode temperature
It can generate flashing.Moreover, being based on kelvin effect, the current density meeting of electrode surface in the case where high frequency lights discharge lamp
Increase with the increasing for modulation frequency of point of discharge lamp, therefore the temperature of electrode surface can increase, the electric arc spot on electrode surface
The movement of point becomes easy.In this way, in terms of improving ultraviolet light illumination sustainment rate and improving discharge stability, there are improved skies
Between.
In this regard, in the discharge lamp 1 involved in embodiment, so that (current density indicates electric current and electrode to current density
The ratio between the sectional area of axis 31) meet 1.91A/mm2Above and 3.67A/mm2Mode below designs electrode 3.Hereinafter, referring to Fig. 2
And discharge lamp 1 is described in detail in Fig. 3.
Firstly, referring to (a) in Fig. 2 and (b), in the combination of electrode shaft diameter, electrode axis sectional area and various electric currents
The melanism of discharge lamp 1 and the experimental result of flashing are illustrated.
(a) indicates electrode shaft diameter, electrode axis sectional area involved in embodiment, electric current and discharge lamp in Fig. 2
The figure of relationship between melanism.(b) is to indicate electrode shaft diameter, electrode axis sectional area, electric current involved in embodiment in Fig. 2
And the figure of the relationship between the flashing generated in discharge lamp.In addition, electrode axis sectional area here refer to electrode axis 31 and its
The area in the section in the vertical plane of extending direction, if electrode axis sectional area is set as S and is set as the radius of electrode axis 31
R, then S=π r2.Also, melanism refers to: temperature caused by with discharging increases, and the substance (predominantly tungsten) for constituting electrode 31 flies
The phenomenon that dissipating and being attached to luminous tube 2.
(a), which is shown, in Fig. 2 is evaluated with melanism state of the three grades to the discharge lamp 1 after lighting 5000 hours
As a result.The state that "○" indicates almost without melanism, " △ " indicate that the state of a part of melanism, "×" indicate the shape of significant melanism
State.
Also, (b) shows the result evaluated with flashing state of the three grades to discharge lamp 1 in Fig. 2."○" table
Show that " △ " indicates to generate the state flashed a little, and "×" indicates the shape for frequently generating flashing almost without the state of flashing is generated
State.Also, current density described below can pass through electric current (A)/electrode axis sectional area (mm2) calculate.
In Fig. 2 (a) and (b) shown in, when electrode shaft diameter is 1.5mm and electrode axis sectional area is 1.77mm2When, in electricity
In the range of stream is 3A~9A, discharge lamp 1 is obtained and has not generated melanism and the good result without generating flashing.In addition, this
When current density become 1.70~5.09.
Also, when electrode shaft diameter is 2.0mm and electrode axis sectional area is 3.14mm2When, in the model that electric current is 6A~12A
In enclosing, discharge lamp 1 is obtained and has not generated melanism and the good result without generating flashing.In addition, current density at this time at
It is 1.91~3.82.
Also, when electrode shaft diameter is 2.5mm and electrode axis sectional area is 4.91mm2When, in the model that electric current is 9A~18A
In enclosing, discharge lamp 1 is obtained and has not generated melanism and the good result without generating flashing.In addition, current density at this time at
It is 1.83~3.67.
Next, being illustrated referring to (c) in Fig. 2 to the maximum temperature of electrode axis involved in embodiment.In Fig. 2
(c) be indicate electrode shaft diameter, electrode axis sectional area involved in embodiment, electric current optimum range, current density range and
The figure of relationship between maximum temperature.
The range for the electric current that electric current optimum range is in Fig. 2 when in (a) and result (b) being "○".Current density
Range is the range of the current density in electric current optimum range.Maximum temperature is with thermal infrared imager (thermotracer) (system
Make quotient: InfraTec, model: ImageIR 8300, emissivity: 0.3 (metal)) electrode 3 of the discharge lamp 1 of measurement when lighting
Temperature (maximum temperature point: arc spot).
It in electrode shaft diameter is 1.5mm and electrode axis sectional area is 1.77mm in Fig. 2 shown in (c)2When, if stream has electricity
Flow optimum range 3A~9A in electric current, then current density range become 1.70~5.09, maximum temperature become 2300K~
3900K。
It also, is 2.0mm in electrode shaft diameter and electrode axis sectional area is 3.14mm2When, if stream has electric current optimum range
Electric current in 6A~12A, then current density range becomes 1.91~3.82, and maximum temperature becomes 2500K~3700K.
It also, is 2.5mm in electrode shaft diameter and electrode axis sectional area is 4.91mm2When, if stream has electric current optimum range
Electric current in 9A~18A, then current density range becomes 1.83~3.67, and maximum temperature becomes 2400K~3600K.
Moreover, in the case where discharge lamp 1 to be used as to the sterilization light source of above-mentioned ballast water treatment, if maximum temperature is low
In 2500K, then it may result in sterilization and be not enough, if temperature is more than 3600K, may result in the decline of lamp service life.
That is, the current density of electrode axis 31 preferably falls in 1.91~3.67 in the discharge lamp 1 involved in embodiment
In range.Therefore, discharge lamp 1 according to involved in embodiment can prevent melanism caused by discharging and flashing, so as to
Improve the stability of electric discharge.
Moreover, by the way that the maximum temperature of discharge lamp 1 involved in embodiment is set as 2500K or more and 3600K hereinafter,
The sterilization of discharge lamp 1 can be prevented to be not enough, while being able to extend service life.
Next, being illustrated referring to Fig. 3 to the illumination sustainment rate of discharge lamp 1 and the relationship between lighting time.Fig. 3 is
Indicate the figure of illumination sustainment rate and the relationship between lighting time involved in embodiment.
In Fig. 3, the longitudinal axis indicates that the illumination sustainment rate of 254nm wavelength, horizontal axis indicate the lighting time of discharge lamp 1.In Fig. 3
In, discharge lamp 1 is electrode shaft diameter is 2.0mm, electrode axis sectional area is 3.14mm2, electric current 10A, current density be
3.18A/mm2In the state of discharge.
Also, the discharge lamp of previous example is also shown in Fig. 3 electrode shaft diameter is 1.5mm, electrode axis sectional area is
1.77mm2, electric current 10A, current density 5.65A/mm2In the state of the result discharged as comparison other.That is, Fig. 3
Shown in " embodiment " meet 1.91~3.67 current density range, the electric current that " previous example " is then unsatisfactory for 1.91~3.67 is close
Spend range.
As shown in figure 3, in " previous example ", after lighting 5000 hours, 254nm illumination sustainment rate decline 65%.That is,
In " previous example ", after lighting 5000 hours, it is not able to satisfy the required lamp service life.
On the other hand, in " embodiment ", after lighting 5000 hours, 254nm illumination sustainment rate maintains 80% or more.
That is, after lighting 5000 hours, can satisfy the required lamp service life in " embodiment ".
In this way, in the discharge lamp 1 involved in embodiment, since the current density of electrode axis 31 meets 1.91~3.67
Range, therefore can be realized lighting time is 5000 hours or more lamp service life.
As described above, discharge lamp 1 involved in embodiment has luminous tube 2 and electrode axis 31.Electrode axis 31 is shining
It discharges in pipe 2.Also, in the case where the electric current of specified value is supplied to electrode axis 31, (current density indicates current density
The ratio between the sectional area of electric current and electrode axis 31) meet 1.91A/mm2Above and 3.67A/mm2Below.Thereby, it is possible to improve electric discharge
The stability of the electric discharge of lamp 1.
More than, several embodiments of the utility model are illustrated, but these embodiments are merely illustrative,
There is no the intentions for limiting utility model range.These embodiments can be implemented in a manner of various other, not depart from this reality
In the range of novel objective, various omissions, displacement, change etc. can be carried out.These embodiments or its deformation belong to this reality
With in novel range or objective, and it is also contained in the utility model recorded in technical solution and its equivalent range.
Claims (4)
1. a kind of discharge lamp, has:
Luminous tube；
The inside of the luminous tube is arranged in a pair of electrodes,
The discharge lamp is characterized in that,
The electrode includes electrode axis, and the inside of the luminous tube is arranged in one end；Coil, to be wrapped in the electrode
The mode of the one end of axis is arranged,
In the case where the discharge lamp obtains power supply to produce electric discharge between the pair of electrode, current density meets
1.91A/mm2Above and 3.67A/mm2Below, wherein the ratio between the sectional area of current density expression electric current and the electrode axis.
2. discharge lamp according to claim 1, which is characterized in that
The maximum temperature of the electrode based on the electric discharge is 2500K or more and 3600K or less.
3. discharge lamp according to claim 1 or 2, which is characterized in that
The point modulation frequency of the discharge lamp is 1kHz or more and 200kHz or less.
4. a kind of ultraviolet lamp, which is characterized in that have:
Discharge lamp described in any one in claims 1 to 3；
Ignition device is powered to the discharge lamp.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018047974A JP2019160682A (en) | 2018-03-15 | 2018-03-15 | Discharge lamp and black light |
| JP2018-047974 | 2018-03-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208753265U true CN208753265U (en) | 2019-04-16 |
Family
ID=66083021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821455035.4U Active CN208753265U (en) | 2018-03-15 | 2018-09-06 | Discharge lamp and ultraviolet lamp |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2019160682A (en) |
| CN (1) | CN208753265U (en) |
-
2018
- 2018-03-15 JP JP2018047974A patent/JP2019160682A/en active Pending
- 2018-09-06 CN CN201821455035.4U patent/CN208753265U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2019160682A (en) | 2019-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1916699A3 (en) | Compact fluorescent lamp and method for manufacturing | |
| JP4750550B2 (en) | Metal halide lamp | |
| JP2008084817A (en) | Compact self-ballasted fluorescent lamp and luminaire | |
| CN208753265U (en) | Discharge lamp and ultraviolet lamp | |
| JP4431174B2 (en) | High pressure gas discharge lamp | |
| KR200170646Y1 (en) | High-pressure discharge lamp and associated illuminating system | |
| TWI344320B (en) | Short arc type discharge lamp operating apparatus, ultraviolet irradiation apparatus and method of ultraviolet irradiating | |
| JP4407474B2 (en) | Excimer lamp | |
| JP4273951B2 (en) | Metal halide lamp and lighting device using the same | |
| JP2005142138A (en) | Metal halide lamp and illuminating apparatus | |
| JP2020047558A (en) | Discharge lamp and ultraviolet irradiation device | |
| JP2006286384A (en) | Discharge lamp for automobile | |
| CN109119325A (en) | A kind of included ballast and can thermal starting xenon lamp | |
| JP4596258B2 (en) | Fluorescent lamp device and lighting device | |
| JP6904111B2 (en) | Discharge lamp | |
| CN201877402U (en) | Electrode configuration | |
| JP5263065B2 (en) | Super high pressure mercury lamp | |
| JPS58145054A (en) | High pressure electric discharge lamp | |
| NL8200077A (en) | HIGH PRESSURE LAMP. | |
| RU169964U1 (en) | High pressure sodium lamp | |
| JP2016181381A (en) | Discharge lamp | |
| JP6733310B2 (en) | Discharge lamp for automobile headlight | |
| JP5278235B2 (en) | Short arc type discharge lamp | |
| JP2008300241A (en) | Fluorescent light | |
| JP2007500419A (en) | Fluorescent lamp with auxiliary discharge and method for manufacturing the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |