CN101107563A - Light-source unit, light-source apparatus, and projection-type display apparatus - Google Patents

Light-source unit, light-source apparatus, and projection-type display apparatus Download PDF

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Publication number
CN101107563A
CN101107563A CNA2006800028388A CN200680002838A CN101107563A CN 101107563 A CN101107563 A CN 101107563A CN A2006800028388 A CNA2006800028388 A CN A2006800028388A CN 200680002838 A CN200680002838 A CN 200680002838A CN 101107563 A CN101107563 A CN 101107563A
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CN
China
Prior art keywords
light source
discharge lamp
reflecting member
absorber
filling material
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.)
Pending
Application number
CNA2006800028388A
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Chinese (zh)
Inventor
小浜亮造
一番濑刚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of CN101107563A publication Critical patent/CN101107563A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/17—Discharge light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/42—Forced cooling
    • F21S45/43—Forced cooling using gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V25/00—Safety devices structurally associated with lighting devices
    • F21V25/02—Safety devices structurally associated with lighting devices coming into action when lighting device is disturbed, dismounted, or broken
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
    • F21V29/67—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V31/00—Gas-tight or water-tight arrangements
    • F21V31/03—Gas-tight or water-tight arrangements with provision for venting
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/16—Cooling; Preventing overheating
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2026—Gas discharge type light sources, e.g. arcs
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2086—Security or safety means in lamp houses

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Projection Apparatus (AREA)

Abstract

A light-source unit includes: a discharge lamp (3) that has a discharge space (13) containing mercury as a filling; and a housing (5), where the discharge lamp (3) is provided inside the housing (5). The housing (5) includes a reflecting member (7) and a lens member (9). The housing (5) includes a cutting (7e) and a through hole (43a) which enable the inside and outside of the housing (5) to communicate with each other. A cutting absorber (45a) is attached to the cutting (7e), and a through hole absorber (45b) is attached to the through hole (43a). The cutting absorber (45a) and the through hole absorber (45b) contain activated charcoal that absorbs mercury.

Description

Light source cell, light source and proj ection-type display apparatus
Technical field
The present invention relates to a kind of discharge lamp that contains filling material that comprises and set the light source cell of housing wherein, a kind of light source, and a kind of proj ection-type display apparatus with the discharge lamp that contains filling material with the discharge lamp that contains filling material.
Background technology
For example the high-pressure discharge lamp of metal halid lamp is widely used in the head lamp and the analogue of proj ection-type display apparatus, vehicle.High-pressure discharge lamp is embedded in the housing of light source cell, and housing forms by reflecting member and lens component, and wherein reflecting element comprises recessed reflecting surface, and the opening of lens member closes reflecting member.High-pressure discharge lamp has the discharge vessel of the filling material that comprises luminescent material for example and buffering material.
By the way, high-pressure discharge lamp has the trend in the simultaneous temperature increase of its illumination, and consistent with it, and the pressure in the discharge vessel increases.This trend is particularly remarkable when high-pressure discharge lamp is used for light source cell.This is that high-pressure discharge lamp is embedded in the housing of sealing because in this case, and the heat of therefrom emission is retained in the housing temperature of increase lamp.
When the pressure in high-pressure discharge lamp or housing became too high, the parts of close light source cell or member can damage owing to the fragment that disperses.
One of technology that proposes as the countermeasure of described problem is a kind of light source cell, and its middle shell has and is used for the throw light on air of heating of high-pressure discharge lamp is discharged to outside air hole (seeing for example Japanese kokai publication hei patented claim NO.10-254061).Even air hole is configured to can prevent that also fragment is ejected into the outside via air hole when high-pressure discharge lamp is broken.For this reason, air hole for example is provided with metal grill.
But as the high-pressure discharge lamp of conventional light source unit when broken, this traditional structure can not prevent that the filling material in the discharge space of high-pressure discharge lamp from flowing out to outside.
Particularly, if mercury is included in the filling material and mercury vapour escapes into the light source cell outside, the parts of ambient light source unit setting or member are owing to mercury corrodes.When having in the display device of light source cell under the circumstances in inside, for example the vitals of control module can not be arranged near the light source cell.This causes limitation for the position of arrangements of components, has perhaps increased the size of entire equipment.
According to wherein contained filling material, described problem also can come across to have and contain for example discharge lamp of some type of the discharge space of the filling material of luminescent material.This is because what worried is that broken and its filling material of discharge lamp escapes into the outside.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of filling material of restraining in the discharge lamp to escape into outside light source cell, light source and proj ection-type display apparatus.
Described purpose realizes that by following light source cell this light source cell comprises: the discharge lamp with the discharge space that contains filling material; And the housing that holds discharge lamp, its middle shell has the passage that the inboard of causing housing and the outside are interconnected, and absorber is connected on the passage so that absorb the filling material of escaping from discharge lamp.
Adopt described structure, if for example discharge lamp fragmentation and filling material are escaped from discharge space, before filling material escaped into hull outside, filling material absorbed by the absorber that is connected on the passage.
Therefore, if for example discharge lamp fragmentation and filling material are escaped from discharge space, before filling material escaped into hull outside, filling material absorbed by the absorber that is connected on the passage.Therefore, described structure is restrained the outside that filling material escapes into light source cell.
In described light source cell, housing can comprise reflecting member and translucent components, and reflecting member has recessed reflecting surface, the opening of the closed reflecting member of translucent components, and reflecting member and/or translucent components comprise passage.
Adopt described structure, if for example discharge lamp fragmentation and filling material during throwing light on escaped from discharge space, escape at filling material before the outside of light source cell, filling material absorbs by the absorber that is connected on the passage that is included in reflecting member and/or the translucent components.
In described light source cell, discharge lamp can be to contain the high-pressure discharge lamp of mercury as filling material.
Here should be noted that term " mercury " refers to the mercury of every kind of form here, comprise the mercury of liquid form, and the mercury of steam form.
In described light source cell, absorber can comprise acticarbon.
Adopt described structure, absorber can be realized easily.
Described purpose realizes by following light source that also this light source comprises: the reflecting member with recessed reflecting surface; The translucent components of the opening of closed reflecting member; And have the discharge space that contains filling material and be contained in discharge lamp in the space that surrounds by reflecting member and translucent components, wherein reflecting member and/or translucent components comprise the passage that causes this space and extraneous air to be interconnected, and absorber is connected on the passage so that absorb the filling material of escaping from discharge space.
Adopt described structure, if for example discharge lamp fragmentation and filling material during throwing light on escaped from discharge space, before filling material escaped into hull outside, filling material absorbed by the absorber that is connected on the passage.Therefore, described structure is restrained the outside that filling material escapes into light source.
In described light source, discharge lamp and reflecting member form a unit, make discharge lamp be embedded in the reflecting member, and reflecting member and translucent components can interconnect and dismantle.
Adopt described structure, discharge lamp can change easily as required.
Described purpose realizes by proj ection-type display apparatus that also this display device comprises the light source that is defined as above.
The filling material of described structure supression discharge lamp escapes into the outside of light source.
Described purpose realizes by proj ection-type display apparatus that also this display device comprises: the discharge lamp that wherein has the discharge space that contains filling material is contained in by in the space that forms near the aperture arrangement translucent components with reflecting member of recessed reflecting surface; The air distribution unit of cooling light source; And the container that contains light source and air distribution unit, wherein absorb the absorber of escaping and be arranged on the air path of distributing by air distribution unit in the downstream position of discharge lamp from discharge space.
Adopt described structure, if filling material is escaped from discharge lamp, the filling material of escape moves along the airflow that causes by air distribution unit, and absorbs by the absorber that is arranged in the air path of distributing by air distribution unit.Therefore, described structure is restrained the outside that filling material escapes into proj ection-type display apparatus.
In described proj ection-type display apparatus, reflecting member and/or translucent components can comprise the passage that causes space and extraneous air to be interconnected, and absorber is connected on the passage.
Adopt described structure, if for example discharge lamp fragmentation and filling material during throwing light on escaped from discharge space, before filling material escaped into the proj ection-type display apparatus outside, filling material absorbed by the absorber that is connected on the passage that is included in reflecting member and/or the translucent components.
Description of drawings
Fig. 1 is the skeleton view of the light source cell of embodiment 1;
Fig. 2 is the front view of light source cell, and wherein for simple and clear purpose, lens component is therefrom dismantled;
Fig. 3 is the sectional view along the light source cell with the lens component that is installed on it of the line X-X intercepting of Fig. 2;
Fig. 4 represents grooving (cutting) absorber;
Fig. 5 represents the discharge lamp and on every side in the light source of embodiment 2;
Fig. 6 is the sectional perspective view of the liquid crystal projection apparatus of embodiment 3;
Fig. 7 is the skeleton view of back-proj ection type image display apparatus of the modification of embodiment 3;
Fig. 8 is light source cell and a zoomed-in view on every side thereof in the back-proj ection type image display apparatus.
Embodiment
Embodiment 1
Below with reference to accompanying drawing, the light source cell of first embodiment of the invention is described.
1. the structure of light source cell
Fig. 1 is the skeleton view of the light source cell of embodiment 1.
Light source cell 1 shown in Figure 1 comprises discharge lamp 3 and housing 5, and wherein discharge lamp 3 is arranged in the housing 5.Housing 5 comprises reflecting member 7 and lens component 9 (corresponding with " translucent components " in the claim).
Fig. 2 is the front view of light source cell, and wherein lens component is therefrom removed so that simple and clear.Fig. 3 is the sectional view along the light source cell with the lens component 9 that is installed on it of the line X-X intercepting of Fig. 2.
Discharge lamp 3 is known high-pressure discharge lamps.As shown in Figure 3, discharge lamp 3 comprises discharge capsule 23 and electrode assemblie 25a and 25b.Discharge capsule 23 comprises the person in charge's part 15 that wherein has discharge space 13 and is arranged on two thin tube part 17 and 19 on the opposite side of being responsible for part 15.Electrode assemblie 25a and 25b make to have certain distance between the two by the relatively most advanced and sophisticated of electrode separately by thin tube part 17 and 19 gas-tight seals in discharge space 13.
Electrode assemblie 25a comprises in the following order electrode part 27a, molybdenum foil 29a and the outer lead 33a that interconnects (for example fixing by welding).Similarly, electrode assemblie 25b comprises in the following order electrode part 27b, molybdenum foil 29b and the outer lead 33b that interconnects (for example fixing by welding).Electrode part 25a is made by tungsten, and comprise electrode stem 35a and the electrode coil 37a that reels around electrode stem 35a at its most advanced and sophisticated place, and electrode part 25b is made by tungsten, and comprises electrode stem 35b and the electrode coil 37b that reels around electrode stem 35b at its most advanced and sophisticated place.
Outer lead 33a and 33b are made and extend to from the outer end of 17 19 of thin tube part respectively the outside of discharge capsule 23 by molybdenum.Outer lead 33b passes the through hole 41 that is formed in the reflecting member 7, and extends to the outside of housing 5, as illustrated in fig. 1 and 2.
Electrode part 27a and 27b are arranged to roughly aim on straight line, so that face mutually in discharge space 13.Under the situation that is used for the high-pressure discharge lamp of proj ection-type display apparatus (for example so-called " short electric arc "), distance between electrode part 27a and the 27b (being anode-cathode distance) is arranged to the scope from 0.5mm-2.0mm, the feasible light source points of proximity light source that is arranged between electrode part 27a and the 27b.
Be responsible for part 15 fillings and comprise for example iodate dysprosium (DyI 3), iodate thulium (TmI 3), Holmium triiodide (HoI 3) and/or the halid luminescent material of thallium iodide (T1I), comprise the padded coaming (buffer gas) of mercury and comprise that the help of argon starts material (for example rare gas) and analog.In current example of the present invention, filling material comprises luminescent material, padded coaming and rare gas.
Base 37 is fixed on the outer end of thin tube part 17 via bond 39, and outer lead 33a is connected on the base 37.Here should be understood that base is fixed on any one outer end of thin tube part.
As Figure 1-3, housing 5 comprises reflecting member 7 and lens component 9.Reflecting member 7 comprises the reflecting surface 7b as recessed surface, and the opening 7a of lens component 9 closed reflecting members 7.Lens component 9 for example combines by silicon-based adhesive and reflecting member 7.
Reflecting member 7 for example is that its inside surface is the catoptron of reflecting surface 7b, for example dichroic reflector.Reflecting member 7 is gone up the light that reflection comes from person in charge's part 15 of discharge lamp 3 at predetermined direction (towards lens component 9).Reflecting member 7 is funnel shapeds.As shown in Figure 3, through hole 7d is formed in the part of opening diameter less than the other parts of reflecting member 7 (after this becomes " base portion ").Thin tube part 17 parts of discharge lamp 3 are inserted through hole 7d.
As lens component 9, the light that glass lens is used for reflecting in a predetermined direction by reflecting surface 7b converts parallel beam to, perhaps optically focused.
As shown in Figure 3, discharge lamp 3 is fixed on the housing 5 by for example bond 43, and thin tube part 17 parts that have been fixed with base 37 are inserted the through hole 7d of the base portion 7c of reflecting member 7.
Housing 5 is provided with and causes the housing 5 inboard passages that are communicated with the outside.Passage setting absorbs for example absorber of the filling material of mercury.
More especially, passage comprises the grooving 7e (see figure 1) that essentially rectangular and the inner surface by the cutting reflecting member 7 from opening 7a to base part 7c form, and is included between the thin tube part 17 of the base portion 7c of reflecting member 7 and discharge lamp 3 the through hole 43a that forms along the thin tube part 17 of discharge lamp 3.
Absorber (after this becoming " grooving absorber ") 45a is connected on the grooving 7e.Grooving absorber 45a is the shape of thin case, so that match with the shape of grooving 7e.Here should be noted that the size of grooving 7e on the thickness direction of reflecting member 17 changes gradually, and grooving absorber 45a is installed in removably in the outmost part of largest portion of grooving 7e.
Equally, absorber (after this being called " through hole absorber ") 45b is connected on the through hole 43a.Through hole absorber 45b is a rod-shape, so as with the form fit of through hole 43a.Through hole absorber 45b is connected on the reflecting member 7 and (in fact is connected on the bond 43), and it inserts through hole 43a simultaneously.
Fig. 4 represents the grooving absorber.
As shown in Figure 4, grooving absorber 45a comprises active carbon particle 47, is used to hold the grid bag 49 of active carbon particle 47 and is used to hold grid bag 49 and active carbon particle 47 makes its container that can change 51.Container 51 for example forms by two container member 51a and the 51b that places as non-covered container, makes the opening of container member 51a and 51b face mutually, therefore is formed for holding therein the space of active carbon particle.The sidewall of container member 51a and 51b is provided with passage (for example stria 53) separately, causes air to flow on the thickness direction of container 51.
Here should be noted that the grooving absorber 45a that is connected on the reflecting member 7 does not need and can dismantle.For example, one of container member of grooving absorber 45a (for example container member 51b) can be fixed on the reflecting member 7 by bond or analog.In this case, this is to container member 51a and 51b can be configured to open and closure, makes acticarbon 47 to change, and container member 51b is fixed on the reflecting member 7 simultaneously.
Equally, container member 51a and 51b can interfix.In this case, the acticarbon 47 that inserts wherein can not be changed.
Here should be noted that as grooving absorber 45a, through hole absorber 45b comprises acticarbon, bag and container.Container is a hollow cylindrical shape, makes container can fill acticarbon.The roof and the diapire of hydrostatic column are provided with through hole, make air pass through hydrostatic column.
2. action
The light source cell 1 of structure shown in having has makes the inboard of housing 5 and the structure that the outside is interconnected via grooving 7e and through hole 43a.Being connected to absorber 45a on grooving 7e and the through hole 43a and 45b makes air pass through they itself.Adopt this structure, the heat that produces during discharge lamp 3 illuminations can be discharged into housing 5 outsides via grooving 7e and through hole 43a.Therefore this structure prevents that discharge lamp 3 from increasing at the simultaneous temperature of its illumination.This prevents that discharge lamp 3 has short life (comprising the short life that causes owing to broken).
Filling material broken and for example mercury is under the situation of discharge space 13 escapes when discharge lamp 3 is throwing light on, and filling material will escape into housing 5 outsides via grooving 7e and through hole 43a.But because absorber 45a and 45b are connected on grooving 7e and the through hole 43a, the mercury that flows out to housing 5 outsides via grooving 7e and through hole 43a absorbs by absorber 45a and 45b.In this way, this structure prevents that mercury from escaping into the outside of housing 5, prevents that mercury from leaking from light source cell 1.
Embodiment 2
Below with reference to accompanying drawing, the light source as second embodiment of the invention is described.
Light source uses the discharge lamp as light source.
Fig. 5 represents in the light source discharge lamp and on every side.
As shown in Figure 5, light source comprises the light source shell unit 102 of tube shape.In 102 inboards, light source shell unit, light source also comprises reflecting member 105 and translucent lens member 107.Reflecting member 105 comprises the reflecting surface as recessed surface, and the opening of lens component 107 closed reflecting members 105.Discharge lamp is contained in the space that surrounds by reflecting member 105 and lens component 107.
Reflecting member 105, lens component 107 and discharge lamp that embodiment 2 describes have and embodiment 1 described reflecting member 7, lens component 9 and discharge lamp 3 identical construction.
In current embodiment, lens component 107 is in the front side of light source shell unit 102 is fixed on the opening 102a of wall 102f.Discharge lamp is embedded in the reflecting member 105 as a unit.The assembly of discharge lamp and reflecting member 105 (this assembly becomes " lamp unit ") is forced to forward, make the edge 105a of reflecting member 105 be connected on the lens component 107, and the lamp unit is fixed on the inboard of light source shell unit 102.In this case, need to change whole lamp unit so that change discharge lamp.
When opening (by the opening of edge 105a encirclement) scioptics member 107 closures of lamp unit, the space that scioptics member 107 and reflecting member 105 surround is formed in the lamp unit.With this space, also formed the passage that causes this space and extraneous air to be interconnected.As the situation of embodiment 1, passage is included in lens component 107 sides and is formed on grooving 105b in the reflecting member 105, and is included in base portion 105c side and is formed on through hole in the reflecting member 105.
Light source shell unit 102 is tube shapes, and has at the passage that is formed near the channel position place of lamp unit in its wall.Each passage setting of light source shell unit 102 comprises the absorber of acticarbon.
More especially, intercommunicating pore 102c is being formed in the wall 102b near the position of grooving 105b, and absorber 109 is arranged to cover the intercommunicating pore 102c on the outside surface of light source shell unit 102.Equally, intercommunicating pore 102e is being formed in the wall 102d near the position that is formed on the through hole of the reflecting member 105 on the base portion 105c side, and absorber 110 is arranged to cover the intercommunicating pore 102e on the outside surface of light source shell unit 102.
Here the inboard and the outside that should be noted that light source shell unit 102 can only be interconnected via the intercommunicating pore 102c and the 102e that are respectively formed in wall 102b and the 102d.
Situation as embodiment 1, the light source of embodiment 2 also is configured such that at discharge lamp fragmentation and mercury or mercury vapour in illumination and escapes into the outside, space that surrounds by reflecting member 105 and lens component 107, because mercury or mercury vapour absorb by absorber 109 and 110, mercury or mercury vapour can not escape into the outside of light source shell unit 102.
In the described light source of embodiment 2, lens component 107 is arranged in the light source shell unit 102, and the lamp unit is connected on the light source shell unit 102 with removably.But, be not limited to this structure, for example the assembly of lens component and reflecting member can be arranged in the light source shell unit, and discharge lamp is connected on the reflecting member removably.
Embodiment 3
Below with reference to accompanying drawing, the anterior projection-type image display (after this being called " liquid crystal grenade instrumentation ") as third embodiment of the invention is described.
Fig. 6 is the sectional perspective view of the liquid crystal grenade instrumentation of embodiment 3.
As shown in Figure 6, liquid crystal grenade instrumentation 200 comprises the light source cell 201 that wherein has discharge lamp; The power cell 202 that comprises the electric ballast that is used to light discharge lamp; Control module 204; Wherein be equipped with the lens unit 206 of convergent lens, translucent color LCD board and CD-ROM drive motor; Fan unit 208 that is used to cool off and the shell 210 that holds these parts.Here should be noted that lens unit 206 is configured to make its parts to extend to the outside of shell 210.
Power cell 202 produces predetermined direct current voltage from the 100V AC power, and the DC voltage that is produced is fed to electric ballast, control module 204 and analog.Power cell 202 comprises the plate 212 that is arranged on the lens unit 206; And be installed in a plurality of electronic/electric 214 on the plate 212.
Control module 204 drives color LCD board, so that according to the image information display coloured image from outside input.Control module 204 is also controlled the CD-ROM drive motor in the lens unit 206, so that carry out focusing operation and zoom operations.
Convergent lens in light source cell 201 emitted light beams scioptics unit 206 is assembled, and by being arranged in the color LCD board on the light path.Adopt this operation, the image that is formed on the color LCD board projects on the screen (not shown) via lens 216 and analog.
In the liquid crystal grenade instrumentation 200 of structure shown in having, passage 210a and 210b are arranged in the antetheca and sidewall of shell 210, make air in shell 210 particularly ambient light source unit 201 flow so that during throwing light on cooling discharge lamp (light source cell 201).In addition, fan apparatus 208 is arranged to from shell 210 interior powerful vent the air overboards.The air path A (after this being called " air flow circuit ") that the arrow indication of Fig. 6 is flowed out from shell 210 by fan apparatus 208.Arrow is arranged to help to understand air and how is flowed out, and in fact, air also can otherwise flow.
As the situation of embodiment 1, light source cell 201 comprises discharge lamp, reflecting member and lens component.Discharge lamp is embedded in the housing that comprises reflecting member and lens component.Light source cell 201 is arranged in the air flow circuit A.
As the situation of embodiment 1, passage is arranged in the light source cell 201, so that cause the housing inboard and the outside to be interconnected.Be different from embodiment 1, do not have absorber (45a and 45b) to be connected on the passage.
Fan apparatus 208 is connected on the passage 210b in downstream of light source cell 201 on the air flow circuit.Equally, be used to prevent that the filtrator (not shown) that dust enters shell 210 is arranged in the passage 210a.On the other hand, passage 210b is provided with the absorber 220 that uses acticarbon.Here should be understood that absorber 220 also has prevents that staff and analog from entering the function of shell 210, particularly enters in the fan of fan apparatus 208.
As the situation of other embodiment, the liquid crystal grenade instrumentation 200 of embodiment 3 is configured such that also mercury absorbed by the absorber 220 that is connected on the shell 210 when discharge lamp fragmentation in light source cell 201 and mercury escaped into the outside.This reduces particularly to have the parts of those parts of power cell 202 of electronic/electric 214 and member and member owing to mercury corrodes.This for example makes that the power cell 202 with electronic/electric 214 is arranged in the position (in the upstream of air flow circuit internal fan equipment 208) near light source cell 201.
In embodiment 3, anterior projection-type image display is as the image display that comprises lamp of the present invention.But, being not limited to this, the present invention is applicable to for example back-proj ection type image display apparatus.
Fig. 7 is the skeleton view of back-proj ection type image display apparatus.Fig. 8 is light source cell and zoomed-in view on every side thereof.
Back-proj ection type image display apparatus 230 comprises cabinet 232; Be arranged on the front surface of cabinet 232 and the screen 234 of display image or analog; And the light source cell 236 that is arranged in cabinet 232 inboards.Here should be noted that light source cell 236 has the identical structure of describing with embodiment 1 of light source cell, and absorber 238 is connected on the reflecting member 237.
As shown in Figure 8, passage 233a is arranged on the rear wall 232a of cabinet 232 in the position near light source cell 236.Equally, as shown in Figure 7, passage 233b is arranged in the sidewall 232b of cabinet 232 in the position near light source cell 236.
Absorber 242 is connected on the inside surface of sidewall 232b of cabinet 232 so that cover passage 233b.Equally, fan apparatus 240 is arranged between absorber 242 and the light source cell 236 so that the feasible air that heats by light source cell 236 illuminations flows out to the outside of cabinet 232 via passage 233b.
Up to now, by embodiment the present invention has been described.But the present invention is not limited to these embodiment, but can adjust in many ways.The example of these modification is provided below.
(1) discharge lamp
In each described embodiment, be used for the high-pressure discharge lamp of liquid crystal display, the short arc type metal halide lamp that promptly has short anode-cathode distance is as discharge lamp.But the present invention also lacks arc type high-tension mercury lamp by use (a) or (b) has the metal halide lamp or the high-pressure sodium lamp of long anode-cathode distance.Equally, this metal halide lamp or high-pressure sodium lamp can be monofocal or double-end type.Equally, Halogen lamp LED can be used as discharge lamp.
Discharge lamp preferably of the present invention is as comprising the lamp of mercury, or the lamp that increases when illumination of the mercury-vapor pressure in the electric arc tube wherein, if wherein mercury is escaped from discharge lamp, can corrode near other material the lamp.
Here should be understood that absorbing mercury helps to protect environment, this is because mercury vapour has the performance of other material of corrosion.From then on viewpoint is set out, and the present invention is applicable to the low-pressure mercury discharge lamp that uses mercury, for example fluorescent light, light-bulb-type fluorescent lamp or analog.
(2) passage
In embodiment 1, passage is as realizing by the grooving that forms at open side cutting reflecting member.But, being not limited to this, passage can other form realize, for example as the through hole that passes reflecting member or as the combination of grooving and through hole.
Passage can be arranged in translucent components and the reflecting member.The passage that is arranged in the translucent components is not limited to specific shape or form.Passage can separately be arranged in translucent components and the reflecting member.Equally, passage can be arranged in bridge joint on translucent components and the reflecting member.
In embodiment 1, two passages are arranged in the reflecting member; And in embodiment 2, two passages are arranged in the light source shell unit.But number of channels of the present invention is not limited to two, but can be one or three or more.Preferably considering under the situation of ventilation, two or more passages are being set.
(3) filling material
In described embodiment, absorber is used for absorbing mercury.But the present invention is applicable to other material of filling in the absorption modulation.For example, if metal halide lamp is used as discharge lamp, the luminescent material of filling in the electric arc tube can comprise for example iodate dysprosium (DyI 3), iodate thulium (TmI 3), Holmium triiodide (HoI 3) and/or the halogenide of thallium iodide (T1I).
(4) absorber
In described embodiment, active carbon particle is as the material that absorbs mercury.But, being not limited to this, activated carbon fiber or activated charcoal paper can be used as the material that absorbs mercury.Equally, can be used as the material that absorbs mercury by tearing the absorber material particle that activated carbon fiber or activated charcoal paper obtain.
In addition, active carbon particle or absorber material particle can distribute and be mixed in activated carbon fiber or the activated charcoal paper so that use.Adopt this method, the absorber area increases, and improves the advantageous effects that absorbs mercury.Equally, the potpourri of any type of particle, fiber and paper can be used to absorb mercury.
When using activated carbon fiber, it can be contained in the sack as described embodiment, and perhaps the cloth of being made by activated carbon fiber can directly be contained in the container.
In addition, fiber can be made by metal material (Al, Ti, Mn, Fe, Ni, Cu, Zn, Nb, Mo, Ag, W, Pt and/or Au) and/or glass material (quartz and/or soda silicate), and fiber can be used in the absorber (for example form of the cloth of being made by fiber).In this case, can only use one type fiber, perhaps can use the combination of polytype fiber.
(5) position of absorber
In embodiment 1, light source cell is provided with absorber; In embodiment 2, light source shell unit (not being light source cell) is provided with absorber; And in embodiment 3, absorber holds in the enclosure, and wherein the light source cell of display device does not hold absorber.But absorber of the present invention is not limited to ad-hoc location, as long as absorber can absorb the material of escaping from discharge lamp when discharge lamp is broken.
(6) reflecting member and translucent components
Reflecting member among the described embodiment can be implemented as (i) formed and had the reflecting surface of a plurality of dielectric layers of deposition or aluminium by borosilicate glass or quartz glass catoptron, perhaps (ii) form and have the catoptron of the reflecting surface of a plurality of dielectric layers of deposition or aluminium, perhaps analog by the metal of for example aluminium.
In described embodiment, translucent components is embodied as the light that in a predetermined direction reflecting surface is reflected and converts the glass lens of parallel beam or the glass lens of converging light to.But translucent components can only form transmission member, for example is the glass plate of the light of Transflective surface reflection.Equally, translucent components can be embodied as the reflecting plate of the light fixture that is equipped with fluorescent light or analog.
(7) light source
In the light source of embodiment 2, discharge lamp and reflecting member form a unit, make discharge lamp be embedded in the reflecting member.These assemblies are connected on the translucent components (light source shell unit) that constitutes light source.
But light source of the present invention is not limited to described structure, but can have any structure, as long as it comprises discharge lamp, reflecting member and translucent components at least.For example, discharge lamp and reflecting member can divide and be arranged, and translucent being connected on the translucent components that constitutes light source.
Light source described herein can be used for the plurality of devices beyond the display device.For example, light source of the present invention can be used for the head lamp of vehicle.In this case, if discharge lamp fragmentation and mercury vapour are escaped choosing from the discharge capsule, mercury vapour absorbs by absorber.The catoptron of the head lamp that therefore this structure reduces to be fabricated from iron or vehicle part are because the possibility of mercury corrosion.
(8) other
In described embodiment, fragmentation when supposing that discharge lamp temperature during throwing light on raises.But, in transportation, light source cell, light source or proj ection-type display apparatus can be subjected to load and broken thus, and perhaps when discharge lamp reaches end-of-life (this situation is also contained in the damaged condition), crackle can appear between electrode assemblie and the discharge capsule.This in this case, light source cell of the present invention, light source and proj ection-type display apparatus can prevent that the filling material in the discharge lamp from flowing out to its outside.
Industrial applicibility
The present invention is applicable to and can restrains filler escapes into the outside from discharge space light source list Unit, light source and display device.

Claims (11)

1. light source cell comprises:
Discharge lamp with the discharge space that contains filling material; And
The housing that holds discharge lamp;
Its middle shell has the passage that the inboard of causing housing and the outside are interconnected, and absorber is connected on the passage so that absorb the filling material of escaping from discharge lamp.
2. light source cell as claimed in claim 1 is characterized in that:
Housing comprises reflecting member and translucent components, and reflecting member has recessed reflecting surface, the opening of the closed reflecting member of translucent components, and reflecting member and/or translucent components comprise passage.
3. light source cell as claimed in claim 2 is characterized in that:
Discharge lamp is the high-pressure discharge lamp that contains as the mercury of filling material.
4. light source cell as claimed in claim 1 is characterized in that:
Discharge lamp is the high-pressure discharge lamp that contains as the mercury of filling material.
5. light source cell as claimed in claim 1 is characterized in that:
Absorber comprises acticarbon.
6. light source cell as claimed in claim 4 is characterized in that:
Absorber comprises acticarbon.
7. light source comprises:
Reflecting member with recessed reflecting surface;
The translucent components of the opening of closed reflecting member; And
Have the discharge space that contains filling material and be contained in discharge lamp in the space that surrounds by reflecting member and translucent components,
Wherein reflecting member and/or translucent components comprise passage, cause this space and extraneous air to be interconnected, and absorber is connected on the passage so that absorb the filling material of escaping from discharge space.
8. light source as claimed in claim 7 is characterized in that:
Discharge lamp and reflecting member form a unit, make discharge lamp be embedded in the reflecting member, and reflecting member and translucent components can interconnect and dismantle.
9. one kind comprises the proj ection-type display apparatus as claim 7 or 8 described light sources.
10. proj ection-type display apparatus comprises:
Light source, the discharge lamp that wherein has the discharge space that contains filling material is contained in by in the space that the close opening with reflecting member of recessed reflecting surface of translucent components is formed;
The air distribution unit of cooling light source; And
The container that comprises light source and air distribution unit,
The absorber that wherein absorbs the filling material of escaping from discharge space is arranged on the air path of distributing by air distribution unit in the discharge lamp location downstream.
11. proj ection-type display apparatus as claimed in claim 10 is characterized in that:
Reflecting member and/or translucent components comprise the passage that causes this space and extraneous air to be interconnected, and absorber is connected on the passage.
CNA2006800028388A 2005-01-21 2006-01-19 Light-source unit, light-source apparatus, and projection-type display apparatus Pending CN101107563A (en)

Applications Claiming Priority (2)

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JP2005014814 2005-01-21

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JP4259571B2 (en) 2006-11-22 2009-04-30 船井電機株式会社 projector
US7806072B2 (en) 2008-12-01 2010-10-05 International Business Machines Corporation Mercury release alerting

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DE1119549B (en) * 1957-06-06 1961-12-14 Bauer Eugen Gmbh Lighting device for projector
US3457399A (en) * 1966-02-25 1969-07-22 Gen Electric Luminaire
US3695009A (en) * 1970-03-30 1972-10-03 Mitchell M Osteen Air filter device
US7052147B2 (en) * 2003-02-20 2006-05-30 Seiko Epson Corporation Light source, and projector provided with the light source

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