CN104938035B - The ignition device and display device of discharge lamp - Google Patents
The ignition device and display device of discharge lamp Download PDFInfo
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- CN104938035B CN104938035B CN201380070967.0A CN201380070967A CN104938035B CN 104938035 B CN104938035 B CN 104938035B CN 201380070967 A CN201380070967 A CN 201380070967A CN 104938035 B CN104938035 B CN 104938035B
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- discharge lamp
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- capacitor
- sectional area
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
- H05B41/288—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
- H05B41/292—Arrangements for protecting lamps or circuits against abnormal operating conditions
- H05B41/2921—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
- H05B41/2926—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against internal abnormal circuit conditions
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Projection Apparatus (AREA)
Abstract
A kind of ignition device of the discharge lamp suppressed by deterioration of capacitor that can be to reducing for noise is provided.Resettlement section (120) houses discharge lamp (115).Lighting starts portion (110) and discharge lamp is applied predetermined voltage to start the lighting of discharge lamp.Power supply unit (105) starts portion supply electric power to discharge lamp and lighting via cable.Capacitor (125) is arranged on outside above-mentioned resettlement section and between above-mentioned cable and reference potential portion.
Description
Technical field
The present invention relates to the ignition device and display device of discharge lamp.
Background technology
Once-through type discharge lamp be by receiving the supply of electric current, make the discharge medium that is sealing in fluorescent tube that electric discharge to occur and
By the lamp (referenced patent document 1) of lighting.When such once-through type discharge lamp lighting is made, generally, using trigger to direct current
Type discharge lamp applies high voltage pulse, but there is the situation that noise is produced because of the high voltage pulse.Also, drawn by the noise
, there is the risk for making peripheral circuit and ancillary equipment etc. cause misoperation in the electromagnetic wave influence peripheral circuit for rising and ancillary equipment.
Therefore, it is important to reduce electromagnetic wave noise.
Method as electromagnetic wave noise is reduced, there are as below methods described in patent document 2：The electricity that one end is grounded
The other end of container is connected on the path for producing noise.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 10-283997 publication
Patent document 2：Japanese Unexamined Patent Publication 2004-226786 publications
The content of the invention
Invention technical task to be solved
However, wanting the technology that patent document 2 is recorded is applied to light supply apparatus to reduce being applied to directly because of trigger
In the case of noise produced by the high voltage pulse of flow pattern discharge lamp, capacitor is connected the vicinity of once-through type discharge lamp.
Therefore, because the impact of the ultraviolet and heat of once-through type discharge lamp generation, has that capacitor deterioration is such.
It is an object of the invention to provide the discharge lamp suppressed by the deterioration of capacitor that can be to reducing for noise
Ignition device and display device.
Means for solving the problems
Based on the ignition device of the discharge lamp of the present invention, have：
Resettlement section, houses discharge lamp；
Lighting starts portion, and above-mentioned discharge lamp is applied predetermined voltage to start the lighting of above-mentioned discharge lamp；
Power supply unit, starts portion supply electric power to above-mentioned discharge lamp and above-mentioned lighting via cable；And
Capacitor, is arranged between above-mentioned cable and reference potential portion in the outside of above-mentioned resettlement section.
Based on the display device of the present invention, possess：Discharge lamp；Make the ignition device of above-mentioned discharge lamp lighting；And pass through
The display part for carrying out display image is modulated to the light that above-mentioned discharge lamp is projected,
Above-mentioned ignition device has：
Resettlement section, houses above-mentioned discharge lamp；
Lighting starts portion, and above-mentioned discharge lamp is applied predetermined voltage to start the lighting of above-mentioned discharge lamp；
Power supply unit, starts portion supply electric power to above-mentioned discharge lamp and above-mentioned lighting via cable；And
Capacitor, is arranged between above-mentioned cable and reference potential portion in the outside of above-mentioned resettlement section.
The effect of invention
The deterioration of the capacitor for noise reduction can be suppressed according to the present invention.
Description of the drawings
Fig. 1 is the block diagram of the structure of the light supply apparatus for representing that an embodiment of the invention is related to.
Fig. 2 is the block diagram of the variation of the structure for representing the light supply apparatus being related in an embodiment of the invention.
Fig. 3 is the block diagram of the configuration example of the projecting apparatus for representing the light supply apparatus for having used Fig. 1.
Specific embodiment
Hereinafter, it is described with reference to the accompanying drawings with regard to embodiments of the present invention.Additionally, in this specification and accompanying drawing,
By identical label being given to the structural element with identical function omit repeat specification.
Fig. 1 is the block diagram of the structure for representing the light supply apparatus 100 being related in an embodiment of the invention.Shown in Fig. 1
Light supply apparatus 100 be the ignition device for making once-through type discharge lamp lighting, with lamp power supply 105, trigger 110, discharge lamp
115th, lampshade 120 and capacitor 125.Lamp power supply 105 and trigger 110, trigger 110 and discharge lamp 115 and discharge lamp
115 and lamp power supply 105 connected by power supply cable 130 respectively.
Lamp power supply 105 is the electricity via power supply cable 130 to 115 supply electric power of trigger 110 and discharge lamp
Source portion.
Trigger 110 is to produce predetermined pulse voltage from the direct current power supplied by lamp power supply 105 and be applied to electric discharge
Lamp 115 starts portion come the lighting for starting the lighting of discharge lamp 115.
Discharge lamp 115 is carrying out the once-through type discharge lamp of lighting using the direct current power supplied from lamp power supply 105.Specifically
Ground says, discharge medium that discharge lamp 115 passes through to make to be enclosed in fluorescent tube (such as rare gas such as neon, xenon, argon, krypton, mercury, sodium,
The metal vapors of scandium etc., or their mixed gas) in electric discharge carrying out lighting.Discharge lamp 115 is applied high pressure by trigger 110
Pulse voltage starting lighting.
Lampshade 120 is the resettlement section for housing discharge lamp 115.In addition, lampshade 120 is by can be to produced by discharge lamp 115
Ultraviolet and photothermal at least one material blocked formed.Additionally, lampshade 120 is with can with discharge lamp 115
The lamp socket of dismounting and the light sent by discharge lamp 115 is injected to the exit wound of bullet (not shown) of predetermined direction.
Capacitor 125 is with the 1st terminal electrode being connected with power supply cable 130 and the 2nd terminal being grounded
Electrode.Specifically, the 1st terminal electrode of capacitor 125 and power supply in cable 130, lamp power supply 105 and discharge lamp
Part connection between 115.2nd terminal electrode of capacitor 125 is connected with reference potential portion (ground potential).By so connection
Noise is carried out path that Low ESR be connected with trigger 110 and lamp power supply 105 via the earth by capacitor 125, formation.In addition,
Capacitor 125 is configured in the outside of lampshade 120.
Additionally, the 2nd terminal electrode of capacitor 125 is for example connected with the framework of the electric conductivity for accommodating light supply apparatus 100.Should
Framework is for example formed by metal, and the current potential of framework is reference potential (ground potential).For example, throwing is accommodated in light supply apparatus 100
In the case of shadow instrument inside, the 2nd terminal electrode is connected with the framework of projecting apparatus.
Additionally, power supply the 1st terminal electrode of the sectional area of cable 130 and capacitor 125, the 2nd terminal electrode
Sectional area is compared all fully big.Specifically, 1st terminal electrode of the power supply with the sectional area specific capacitance device 125 of cable 130
Sectional area it is big more than 20 times.
Here, discharge lamp 115 produces hyperpyrexia, the heat is delivered to capacitor 125 via power supply cable 130.So
And, due to the power supply of mains side it is also big than the sectional area of the 1st terminal electrode with the sectional area of cable 130 therefore most of
Heat be not delivered to capacitor 125, but be delivered to the power supply cable 130 of mains side.Thereby, it is possible to suppress electric capacity
The temperature of device 125 rises.Thus, the power supply of mains side is operated as radiator with cable 130, therefore, it is possible to press down
The temperature of capacitor processed 125 rises.
Additionally, here, with regard to lamp power supply 105 and trigger 110, trigger 110 and discharge lamp 115 and discharge lamp
115 and the power supply that is attached respectively of lamp power supply 105 said with the sectional area identical example of the whole of cable 130
It is bright, but the invention is not restricted to the example.
Fig. 2 is the block diagram for representing the version in light supply apparatus of the present embodiment 100.There is such as lower unit：
Trigger 110 and lamp power supply 105 are connected with Low ESR by making the sectional area of power supply cable 130 come more greatly, so as to drop
Low noise.But, if making all thicker of power supply cable 130, the manufacturing cost of light supply apparatus 100 is improved.Therefore,
As shown in Fig. 2 by making between position in power supply cable 130, being connected with capacitor 125 and discharge lamp 115
The sectional area of part 130a is bigger than the sectional area of other parts, can suppress the rising of the manufacturing cost of light supply apparatus 100.More
Say body, the part 130a's between position in power supply cable 130, being connected with capacitor 125 and discharge lamp 115
The sectional area of the 1st terminal electrode of sectional area specific capacitance device 125 is big more than 20 times, and the sectional area of other parts is less than capacitor
20 times of the sectional area of 125 the 1st terminal electrode.
Fig. 3 is the block diagram of the configuration example of the projecting apparatus for representing the light supply apparatus 100 for having used Fig. 1.
Projecting apparatus illustrated in fig. 3 10 is the use of an example of the display device of the light supply apparatus 100 shown in Fig. 1,
With light supply apparatus 100, display part 200 and control unit 300.
Light supply apparatus 100 projects light from the exit wound of bullet of light lampshade 120.
Display part 200 is modulated to render to screen according to the signal of video signal being transfused to the light that light supply apparatus 100 is projected
Curtain 50, so as to show image corresponding with signal of video signal on screen 50.Display part 200 has：Colour wheel, which is filled to such as light source
The light for putting 100 injections carries out time division to project multiple coloured light；Display element, its output are adjusted to the coloured light that colour wheel is projected
The image light of system；Drive circuit, which drives display element according to the signal of video signal being transfused to；And throw in lens group, its to
Screen 50 expands the image light for throwing in that display element is exported.
Control unit 300 indicates the action of light supply apparatus 100 and display part 200 according to the signal of video signal of input.Control unit
300 is, for example, the arithmetic processing apparatus such as CPU (Central Processing Unit, CPU), indicates light supply apparatus
Lighting and turn off the light, control display part 200 colour wheel rotation.In addition, signal of video signal output is arrived display part by control unit 300
200 drive circuit.
Specifically, control unit 300 makes the lamp power supply 105 of light supply apparatus 100 be initially supplied direct current power, makes trigger
110 apply pulse voltage to discharge lamp 115 in predetermined timing.Thus, discharge lamp 115 is by enclosing the lamp of discharge medium
Carry out electric discharge to start lighting in pipe.
Thus, projecting apparatus 10 can project image corresponding with signal of video signal using the light that light supply apparatus 100 is projected.
It is as described above, according to present embodiment, with the terminal electrode and quilt that are connected with power supply cable 130
The capacitor 125 reduced for noise of the terminal electrode of ground connection is configured in the outer of the lampshade 120 for having housed discharge lamp 115
Portion.Thus, lampshade 120 can block heat of the radiation of discharge lamp 115 etc. to capacitor 125, and can suppress to drop for noise
The deterioration of low capacitor 125.
In addition, according to present embodiment, lampshade 120 is blocked in the ultraviolet and heat of the generation of discharge lamp 115 at least
One.Thereby, it is possible to be reliably suppressed the deterioration of the capacitor 125 of the outside for being configured in lampshade 120.
In addition, according to present embodiment, the power supply terminal electrode of the sectional area specific capacitance device 125 of cable 130
Sectional area is big more than 20 times.When the distance between capacitor 125 and discharge lamp 115 increase, because from capacitor 125 and putting
The possibility increase of the wiring radiated noise connected between electric light 115, so generally the noise reduction of capacitor 125 becomes
It is low.However, by using sectional area big power supply with cable 130 suppressing from connection capacitor 125 and discharge lamp 115
The radiation of the noise of circuit, can play the noise drop equal with capacitor 125 to be configured situation in the vicinity of discharge lamp 115
Poorly efficient fruit.
In addition, can be matched somebody with somebody in the distance left from discharge lamp 115 by using the big power supply cable 130 of sectional area
Capacitor 125 is put, by capacitor 125 is configured in the distance that have left discharge lamp 115, table of the power supply with cable 130
Area increases, and power supply cable 130 is operated as radiator.Therefore, the heat that discharge lamp 115 is produced is supplied along electric power
To being conducted with cable 130, can suppress to make the temperature of capacitor 125 to rise, and being capable of more reliably suppression capacitor 125
Deterioration.
It is in addition, according to present embodiment, in power supply cable 130, the position of capacitor 125 will be connected with and put
The sectional area of the part 130a that electric light 115 is attached is bigger than the sectional area of other parts.When making power supply cable 130
Sectional area it is big when, the manufacturing cost of light supply apparatus 100 rises, but sectional area is become big part shall be limited only to the extent necessary position
Put such that it is able to suppress the rising of manufacturing cost.
It is in addition, according to present embodiment, in power supply cable 130, the position of capacitor 125 will be connected with and put
The sectional area of the terminal electrode of the sectional area specific capacitance device 125 of the part 130a that electric light 115 is attached is big more than 20 times, other
Part sectional area less than 20 times of sectional area of terminal electrode.Thus, in noise from power supply with cable 130 as electricity
The high part of the possibility of electromagnetic wave radiation, can suppress noise as electromagenetic wave radiation, and can more reliably suppress noise
The reduction of reducing effect.
Additionally, be configured with the light supply apparatus of capacitor in the vicinity of discharge lamp, as the deterioration for suppression capacitor
Method, it is contemplated that with panel beating covering capacitor itself, using cooling capacitor cooling fan method.With regard to this
The advantage of the light supply apparatus 100 that method compares is illustrated.
In the case where discharge lamp 115 is housed in lampshade 120, can not only prevent from being configured in the electricity outside lampshade 120
Container 125 is subject to the ultraviolet and heat of the generation of discharge lamp 115, additionally it is possible to prevent each several part of light supply apparatus 100 from being put
Ultraviolet and heat that electric light 115 is produced.In addition, because need not with the covering capacitors such as panel beating 125 itself, it is possible to
Guarantee the easness of dismounting when changing capacitor 125.
In addition, blocking ultraviolet by lampshade 120 and heat, power supply cable 130 is used as radiator and carries out work
Make, it is not necessary to which cooling fan is set.Therefore, it is to avoid the power consumption that produces in the case where fan is configured with, motion and sound with
And the man-hour that the increase of framework size, the maintenance of cooling fan spend.
More than, reference implementation mode describes the present invention, but the invention is not restricted to above-mentioned embodiment.To this
Bright structure and detailed content carry out within the scope of the invention can than skilled artisans appreciate that it is various
Change.
For example, in the above-described embodiment, as an example of the equipment comprising the light supply apparatus for having used discharge lamp
Display device is enumerated, but has been not limited to example involved in the present invention.Equipment comprising light supply apparatus can also for example be illumination
Equipment, lamp bracket, the light-emitting device of flash lamp, camera head of built-in flash etc. are commonly referred to as Taking Photographic etc..
In addition, in the above-described embodiment, projecting apparatus 10 is illustrated as an example of display device, but the present invention is not
It is limited to the example.As long as device of the display device with the light supply apparatus comprising discharge lamp.
In addition, in the above-described embodiment, light source is shown as an example of the ignition device for making discharge lamp lighting
Device 100.But, discharge lamp 115 because removable loaded on lampshade 120, in the light supply apparatus of the state for pulling down discharge lamp 115
100 ignition devices that may also be referred to as discharge lamp.
Label declaration
10 projecting apparatus (display device)
50 screens
100 light supply apparatuses (ignition device)
105 lamp power supplys (power supply unit)
110 triggers (lighting starts portion)
115 discharge lamps (once-through type discharge lamp)
120 lampshades (resettlement section)
125 capacitors
130 power supply are with cable (cable)
200 display parts
300 control units
Claims (6)
1. a kind of ignition device of discharge lamp, possesses：
Resettlement section, houses discharge lamp；
Lighting starts portion, and above-mentioned discharge lamp is applied predetermined voltage to start the lighting of above-mentioned discharge lamp；
Power supply unit, starts portion supply electric power to above-mentioned discharge lamp and above-mentioned lighting via cable；And
Capacitor, is arranged between above-mentioned cable and reference potential portion in the outside of above-mentioned resettlement section,
Wherein,
The sectional area of the part between the position for being connected with above-mentioned capacitor and above-mentioned discharge lamp in above-mentioned cable is than other
Partial sectional area is big.
2. the ignition device of discharge lamp according to claim 1, wherein,
The sectional area of above-mentioned cable is bigger than the sectional area of the terminal electrode of above-mentioned capacitor.
3. the ignition device of discharge lamp according to claim 1, wherein,
The sectional area of the part between the position for being connected with above-mentioned capacitor and above-mentioned discharge lamp in above-mentioned cable is than above-mentioned electricity
The sectional area of the terminal electrode of container is big more than 20 times.
4. the ignition device of the discharge lamp according to any one of claims 1 to 3, wherein,
At least one of ultraviolet that above-mentioned resettlement section is produced to above-mentioned discharge lamp and heat are blocked.
5. a kind of display device, possesses：Discharge lamp；Make the ignition device of above-mentioned discharge lamp lighting；And by above-mentioned electric discharge
The light that lamp is projected is modulated the display part for carrying out display image,
Above-mentioned ignition device possesses：
Resettlement section, houses above-mentioned discharge lamp；
Lighting starts portion, and above-mentioned discharge lamp is applied predetermined voltage to start the lighting of above-mentioned discharge lamp；
Power supply unit, starts portion supply electric power to above-mentioned discharge lamp and above-mentioned lighting via cable；And
Capacitor, is arranged between above-mentioned cable and reference potential portion in the outside of above-mentioned resettlement section,
The sectional area of the part between the position for being connected with above-mentioned capacitor and above-mentioned discharge lamp in above-mentioned cable is than other
Partial sectional area is big.
6. display device according to claim 5, wherein,
Also there is the framework for housing above-mentioned ignition device, said reference current potential portion is the framework.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2013/051074 WO2014112119A1 (en) | 2013-01-21 | 2013-01-21 | Discharge lamp lighting apparatus, and display apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104938035A CN104938035A (en) | 2015-09-23 |
| CN104938035B true CN104938035B (en) | 2017-04-05 |
Family
ID=51209238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380070967.0A Active CN104938035B (en) | 2013-01-21 | 2013-01-21 | The ignition device and display device of discharge lamp |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104938035B (en) |
| WO (1) | WO2014112119A1 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445832A (en) * | 2010-10-13 | 2012-05-09 | 三洋电机株式会社 | Lamp unit and video projector including lamp unit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH034699U (en) * | 1989-06-05 | 1991-01-17 | ||
| JP3613022B2 (en) * | 1998-08-24 | 2005-01-26 | 松下電工株式会社 | Electrodeless discharge lamp device |
-
2013
- 2013-01-21 CN CN201380070967.0A patent/CN104938035B/en active Active
- 2013-01-21 WO PCT/JP2013/051074 patent/WO2014112119A1/en active Application Filing
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445832A (en) * | 2010-10-13 | 2012-05-09 | 三洋电机株式会社 | Lamp unit and video projector including lamp unit |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014112119A1 (en) | 2014-07-24 |
| CN104938035A (en) | 2015-09-23 |
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Address after: Tokyo, Japan Patentee after: Sharp NEC display solutions Co.,Ltd. Address before: Tokyo, Japan Patentee before: NEC DISPLAY SOLUTIONS, Ltd. |