CN1497637A - Lamp with mirror and image projector - Google Patents
Lamp with mirror and image projector Download PDFInfo
- Publication number
- CN1497637A CN1497637A CNA2003101002881A CN200310100288A CN1497637A CN 1497637 A CN1497637 A CN 1497637A CN A2003101002881 A CNA2003101002881 A CN A2003101002881A CN 200310100288 A CN200310100288 A CN 200310100288A CN 1497637 A CN1497637 A CN 1497637A
- Authority
- CN
- China
- Prior art keywords
- lamp
- speculum
- air vent
- luminous tube
- pressure discharge
- 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
Links
Images
Landscapes
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
A reflecting-mirror-equipped lamp 100 including a high pressure discharge lamp 10 and a reflecting mirror 20. An opening 24 of the reflecting mirror 20 is provided with a front glass 22 and two air holes (31 and 32) are formed through the reflecting mirror 20. The air holes (31 and 32) are provided on a cross section (44) including a luminous bulb 11. If the cross section 44 is divided into regions (I through IV) consisting of first, second, third and fourth quadrants with respect to the luminous bulb 11, the air holes (31 and 32) are respectively provided in two quadrants diagonal to each other, i.e., in the first and third quadrants, respectively, or in the second and fourth quadrants, respectively.
Description
Technical field
The present invention relates to a kind of lamp that has speculum and image projection device with high-pressure discharge lamp and speculum.Particularly, relate to as the light source of image projection devices such as liquid crystal projection apparatus light source or digital micromirror device (DigitalMicromirror Device:DMD) projecting apparatus and the lamp that has speculum of usefulness.
Background technology
In recent years, as the system that realizes big picture image, use the image projection devices such as projecting apparatus of liquid crystal projection apparatus or DMD to be widely used.The light source of such image projection device generally is widely used in the lamp that has speculum that facetted mirrors constitutes on the high-pressure discharge lamp with high brightness.
In having the lamp of speculum, in order to prevent to heat in the course of work, majority is to form air vent hole near the speculum front glass, and designs cooling fan (for example the spy opens the 2000-82322 communique) near having the lamp of speculum.
In Figure 10 and Figure 11, the spy is shown opens the disclosed lamp that has speculum in the 2000-82322 communique.Figure 10 is the discharge lamp that has speculum (light source cell) of discharge lamp 10 that has concave mirror 120 and be fixed on the stem of concave mirror 120, Figure 11 (a) and (b) light source is shown and is arranged on state in the outer container 102.Figure 11 (a) is the cross-sectional view of outer container 102, and Figure 11 (b) is the upper section figure that the X-X ' from Figure 11 (a) sees downwards.
In light source cell 1000 shown in Figure 10, discharge lamp 110 approximate horizontal are arranged in the pressure reduction flow path system.The stem of concave mirror 120 is provided with cooling, air discharging hole 129, is provided with translucent glass 122 in the front openings of concave mirror 120.And, be provided with inner and the cooling wind pushing hole 130 of relative concave mirror near the front openings of concave mirror 120 with directive property.
As Figure 11 (a) with (b), light source cell 1000 is configured in the outer container 102 with suction fan 103 and ventilating fan 104.Be formed with dividing wall 105 in the outer container 102, ambient light source unit 1000 is that the boundary line is separated into the space A of the wind pushing hole 130 that comprises suction fan 103 and light source cell 1000 and comprises ventilating fan 104 and the space B of light source cell 1000 with dividing wall 105 in the outer container 102.
Open the record of 2000-82322 communique according to the spy, flow into the cooling air of outer container 102 inside by the pressure differential between space A and the space B from suction fan 103, can flow into the inside of light source cell 1000, therefore has directive property owing to wind pushing hole 130, well the illuminating part of cooling discharge lamp and sealing and entire emission mirror minute surface.
The problem that invention will solve
It is disclosed to open the 2000-82322 communique as the spy, the lamp that has speculum is normally to use cooling fan to be precondition, as shown in figure 11, the ratio that cooling fan (suction fan 103 and ventilating fan 104) occupies in the outer container 102 is bigger,, if can remove cooling fan, can make image projection device miniaturization more.Certainly, if can remove cooling fan, can also realize low cost.
, owing to require the relation of the image projection device of high brightness, use the very high high-pressure discharge lamp of power now,, then will be difficult to make the image projection device steady operation if the result does not have cooling fan.
Summary of the invention
The present invention finishes in view of the above problems, and its main purpose provides a kind of lamp that has speculum, can realize the miniaturization of image projection device.
Solve the technological means of problem
The light fixture that has speculum of the present invention has: high-pressure discharge lamp, this high-pressure discharge lamp have the inner luminous tube of luminescent substance and the sealing that extends from the two ends of above-mentioned luminous tube enclosed; Reflection of light mirror with the above-mentioned high-pressure discharge lamp emission of reflection, above-mentioned speculum has peristome in exit direction the place ahead, and be provided with front glass at above-mentioned peristome place, be formed with two air vent holes on the above-mentioned speculum, above-mentioned two air vent holes are arranged in as the cross section of above-mentioned speculum with cross section above-mentioned sealing bearing of trend approximate vertical and comprise on the cross section of above-mentioned luminous tube, to state luminous tube is the center, with above-mentioned cross section as by first, second, during field that third and fourth quadrant constitutes, above-mentioned two air vent holes be combined to form for image position in first and third quadrant or second and four-quadrant be positioned at diagonal quadrant like that.
The imaginary line that connects the central portion separately of above-mentioned two air vent holes and form preferably also contacts by last top with the ratio central authorities of above-mentioned luminous tube.Wherein the ratio central authorities of so-called luminous tube also are meant the first half of luminous tube vertical direction by last top.
The light fixture that other have speculum of the present invention has high-pressure discharge lamp and the above-mentioned high-pressure discharge lamp of reflection to send the reflection of light mirror, this high-pressure discharge lamp has the inner luminous tube of luminescent substance and the sealing that extends in general horizontal direction from the two ends of above-mentioned luminous tube enclosed, above-mentioned speculum has peristome in exit direction the place ahead, be formed with two air vent holes on the above-mentioned speculum, above-mentioned two air vent holes dispose with respect to seeing to divide right and left from above-mentioned peristome by the roughly vertical straight line of above-mentioned luminous tube central authorities, an air vent hole in above-mentioned two air vent holes is positioned at the oblique upper of above-mentioned luminous tube, another air vent hole relative with an above-mentioned air vent hole is positioned at the oblique below of above-mentioned luminous tube, and the central portion that connects an above-mentioned air vent hole also contacts by last top by central horizontal line with the ratio of above-mentioned luminous tube with the imaginary line of the central portion of above-mentioned another air vent hole.
In a suitable execution mode, above-mentioned high-pressure discharge lamp has the inner luminous tube of luminescent substance and a pair of sealing that extends from the two ends of above-mentioned luminous tube enclosed, above-mentioned speculum has wide peristome that is arranged in exit direction the place ahead and the narrow opening portion that inserts a sealing of above-mentioned a pair of sealing, and the wide peristome place of above-mentioned speculum is equipped with transparent member.
Of the present invention another has the speculum light fixture has high-pressure discharge lamp and the above-mentioned high-pressure discharge lamp of reflection to send the reflection of light mirror, this high-pressure discharge lamp has the inner luminous tube of luminescent substance and the sealing that extends from the two ends of above-mentioned luminous tube enclosed, above-mentioned speculum has peristome in exit direction the place ahead, and above-mentioned peristome place is provided with front glass, form two air vent holes on the above-mentioned speculum, above-mentioned two air vent holes are arranged in as the cross section of the cross section and the bearing of trend approximate vertical above-mentioned sealing of above-mentioned speculum and comprise on the cross section of above-mentioned luminous tube, to state luminous tube is the center, with above-mentioned cross section as by first, second, during field that third and fourth quadrant constitutes, above-mentioned two air vent holes be combined to form for image position in first and third quadrant or second and four-quadrant be positioned at diagonal quadrant like that, air vent hole and another air vent hole when above-mentioned high-pressure discharge lamp is luminous in above-mentioned two air vent holes play air intake and outlet respectively, and air vent hole in above-mentioned two air vent holes and another air vent hole are configured in that the air that enters from above-mentioned inlet contacts the top of above-mentioned luminous tube and from such position that above-mentioned outlet is gone out under above-mentioned natural convection air situation.
In a suitable execution mode, the air vent hole that flows that above-mentioned speculum does not form that air that upset enters from above-mentioned inlet contacts with the top of above-mentioned luminous tube and goes out from above-mentioned outlet.
In a suitable execution mode, in above-mentioned two air vent holes any one all be not arranged on above-mentioned luminous tube directly over.
In a suitable execution mode, above-mentioned high-pressure discharge lamp is to enclose amount of mercury at 150mg/cm
3Above high-pressure mercury-vapor lamp.
In a suitable execution mode, above-mentioned high-pressure discharge lamp is the above lamp of 80W.
Image projection device of the present invention is to have above-mentionedly to have the lamp of speculum and be the image projection device of the optical system of light source with the above-mentioned lamp that has speculum.
In a suitable execution mode, the above-mentioned cooling fan that has the lamp of speculum of cooling is not set in the above-mentioned image projection device.
The invention effect
According to the present invention, two air vent holes are arranged in as the cross section and cross section sealing bearing of trend approximate vertical of speculum and comprise on the cross section of luminous tube 11, these two air vent holes are combined to form to being positioned at diagonal quadrant, therefore can utilize the free convection that forms because of the heat that produces in the lamp luminescence process, cool off luminous tube 11 effectively by the air that enters from an air vent hole, as a result, a kind of lamp that has speculum can be provided, the image projection device miniaturization can be realized.
Implement suitable mode of the present invention
The size of image projection device (projecting apparatus) has diminished in recent years, and the present inventor begins to develop the image projection device that does not have the cooling fan type in order to realize further miniaturization.
Considering does not have a reason of cooling fan to be, be accompanied by the miniaturization year by year of image projection device body dimension, the heat radiation that has the lamp (light source cell) of speculum becomes more and more difficult, this also is the reason that needs the stronger cooling fan of cooling capacity (draft capacity), therefore can not ignore the noise problem of cooling fan.And in the image projection device body of miniaturization, the space that cooling fan is set is more and more littler, if can remove cooling fan, perhaps can use cooling capacity is not so big and the little cooling fan of size, just can increased design freedom.Therefore,,, also can obtain sufficient natural cooling effect, just can realize the miniaturization of image projection device, and can prevent that cooling fan from producing noise even do not use the big cooling fan of cooling capacity if can develop a kind of lamp that has speculum.
Perforate on the speculum of the lamp that has speculum, the area of speculum reduces, and the outgoing light quantity reduces, and therefore avoids this kind method usually.Therefore, for the stem (neck) that reduces owing to speculum is provided with the light quantity minimizing that air vent hole causes, (near the front glass) is provided with air vent hole (opening the 2000-82322 communique referring to the spy) near the wide peristome of opening of speculum., such mode is to be the method for prerequisite there to be cooling fan, under the situation that will utilize free convection, does not almost have what usefulness.
The inventor painstakingly researchs and develops a kind of lamp that has speculum, even do not use the big cooling fan of cooling capacity also to have cooling effect, finishes such lamp that has speculum, realizes the present invention.
Below, with reference to the description of drawings embodiments of the present invention.In the accompanying drawing below, for the purpose of simplifying the description, the composed component that has identical function in fact uses identical symbolic representation.And, the invention is not restricted to following execution mode.
Description of drawings
Fig. 1 (a) is the figure of structure that briefly shows the lamp that has speculum of present embodiment; Figure (b) is the sectional view in the cross section of the IB-IB ' line of expression in Fig. 1 (a).
Fig. 2 (a) is the end view of cross-sectional configuration that the lamp that has speculum of embodiment of the present invention is shown; Figure (b) is its rear view, and figure (c) is the simulation drawing that the lamp internal air stream that has speculum is shown.
Fig. 3 is the figure of cross-sectional configuration that briefly shows the lamp that has speculum of embodiment of the present invention.
Fig. 4 is the figure that briefly shows the lamp cross-sectional configuration that has speculum as a comparative example.
Fig. 5 is the figure that briefly shows the lamp cross-sectional configuration that has speculum as a comparative example.
Fig. 6 is the figure that briefly shows the lamp cross-sectional configuration that has speculum as a comparative example.
Fig. 7 (a) is the stereogram that the cross-sectional configuration of the lamp that has speculum as a comparative example is shown; Figure (b) is the stereogram at its back side, and figure (c) is the simulation drawing that the lamp internal air stream that has speculum is shown.
Fig. 8 (a) is the stereogram that the cross-sectional configuration of the lamp that has speculum as a comparative example is shown; Figure (b) is the stereogram that its back view is shown, and figure (c) is the simulation drawing that the lamp internal air stream that has speculum is shown.
Fig. 9 (a) is the figure that the air vent hole of circular is shown, and figure (b) illustrates the figure of the air vent hole of a plurality of through holes formations, and figure (c) is the figure that the air vent hole that is provided with screen cloth is shown.
Figure 10 is the sectional view that briefly shows the structure that has the lamp 1000 that has speculum now.
Figure 11 (a) and (b) briefly show and be configured in the sectional view of structure that existing in the outer container has the lamp 1000 of speculum.
Figure 12 is the skeleton diagram of the lamp that will have speculum of embodiments of the present invention as the image projection device of light source.
Symbol description: 10 high-pressure discharge lamps; 11 luminous tubes; 12 sealings; 13 metal formings (molybdenum foil); 15 electrodes (electrode bar); 16 coils; 17 exterior guiding lines; 18 lamp sockets; 19 adhesive; 20 speculums; 22 front glass; 24 wide peristomes; 25 narrow opening portions; 26 stems (neck); 30 natural winds (cooling air); 31 air vent holes (inlet); 32 air vent holes (outlet); 33 through holes; 34 screen clothes; 40 lamp center lines (optical axis), 41 horizontal lines; 42 vertical lines; 90 optical systems; 1000 have the lamp of speculum.
Embodiment
With reference to Fig. 1 embodiments of the present invention are described.Fig. 1 (a) briefly shows the cross-sectional configuration of the lamp that has speculum 100 of present embodiment; Fig. 1 (b) is the sectional view that the IB-IB ' line in Fig. 1 (a) is cut open.
Shown in Fig. 1 (a), the speculum 20 that the light fixture that has speculum of present embodiment has high-pressure discharge lamp 10 and the light that sends from high-pressure discharge lamp 10 is reflected.High-pressure discharge lamp 10 has the inner luminous tube 11 that luminescent substance is arranged of enclosing, and a pair of sealing 12 extends from the two ends general horizontal direction of luminous tube 11.
Shown in Fig. 1 (b), be formed with two air vent holes (31,32) on the speculum 20, approximate vertical line 42 with respect to the central authorities that pass through luminous tube 11, wide peristome 24 1 sides from speculum 20, two air vent holes (31,32) setting of dividing right and left, an air vent hole 32 is positioned at the oblique upper of luminous tube 11, and another air vent hole 31 is positioned at the oblique below of luminous tube 11.Vertical line 42 is the straight lines with the bearing of trend approximate vertical (being typically the right angle) of sealing 12.Wherein, the central portion that preferably connects air vent hole 31 also leans on last top (11a) to contact with the ratio of luminous tube 11 by its central horizontal line 41 with the formed imaginary line 35 of the central portion of air vent hole 32.This can cool off luminous tube 11 most effectively because if 11a place ingress of air flows above luminous tube 11.
A pair of sealing 12 extended along horizontal direction when the lamp that has speculum of present embodiment was arranged to use.Therefore, the top 11a of the luminous tube 11 of so-called preferred imaginary line 35 contacts is meant the first half (episphere part) of vertical direction when using.In Fig. 1 (b), the central portion of the air vent hole (31,32) by connecting inner face one side be positioned at speculum 20 respectively forms imaginary line 35, and the upper portion 11a of luminous tube 11 and imaginary line 35 intersections are represented with symbol 36 then.The central portion of air vent hole 31,32 is for the resistance minimum of air stream, so the flow velocity maximum of air, can cool off luminous tube 11 most effectively.
Speculum 20 has the wide peristome 24 that is positioned at exit direction the place ahead, the narrow opening portion 25 that inserts the sealing 12 of high-pressure discharge lamp 10.The wide peristome 24 of speculum 20 is equipped with transparent member (for example front glass) 22.Narrow opening portion 25 is arranged in the stem (neck) 26 of speculum 20, and the sealing 12 that inserts in the narrow opening portion 25 is fixed on stem 26 by mineral-type adhesive (for example adhesive).
Be relatively set with pair of electrodes 15 in the luminous tube 11 of high-pressure discharge lamp 10, an end of each electrode 15 is electrically connected with metal forming (molybdenum foil) 13 in being arranged on sealing 12.The front end of the electrode 15 that exposes in the luminous tube 11 preferably is wound with coil 16.One end of metal forming 13 is electrically connected with exterior guiding line 17.The exterior guiding line 17 that extends from the end face of the sealing 12 that is positioned at narrow opening portion 25 1 sides is electrically connected with lamp socket 18.On the one hand, the exterior guiding line 17 that extends from the end face of the sealing 12 that is positioned at wide peristome 24 1 sides (exit direction one side) is electrically connected with exterior guiding line lead-out wire (not shown), and this exterior guiding line lead-out wire is electrically connected with external circuit.The high-pressure discharge lamp 10 of present embodiment is so-called double ended type discharge lamp, and the central shaft 40 of lamp roughly is installed on the speculum 20 in horizontal direction.
If further specify the formation of present embodiment, speculum 20 for example is paraboloidal mirror or off-axis paraboloids and ellipsoids mirrors, in order not reduce the optical property of lamp, with very high accuracy Design and processing.The wide peristome 24 that is positioned at exit direction the place ahead of the lamp 100 that has speculum is equipped with front glass 22, does not therefore consider air vent hole (31,32) part, constitutes closed structure in fact.Therefore, when the contingency lamp damages, can play the effect that prevents that lamp from dispersing effectively.
Two air vent holes (31,32) that are formed with on the speculum 20 are formed on vertical in the field 44 that comprises cross section, luminous tube 11 place, and any one air vent hole (31,32) is not formed on directly over the vertical direction of luminous tube 11.Under equally, not being formed on yet.In other words, two air vent holes (31,32) are arranged on the cross section and cross section sealing 12 (perhaps electrode 15) bearing of trends (40) approximate vertical of speculum 20, are the cross sections (44) that comprises luminous tube 11.Therefore, cross section 44 is with following formation, be the center promptly with luminous tube 11 (perhaps electrode 15), by first, second, third and fourth quadrant constitute the field (during I～IV), two air vent holes be combined to form for image position in first and third quadrant or second and four-quadrant be positioned at diagonal quadrant like that.As mentioned above, preferably form air vent hole 31 and 32 on speculum 20, the imaginary line 35 that the central portion of central portion by connecting air vent hole 31 and air vent hole 32 is formed also contacts by last top 11a with the ratio central authorities of luminous tube 11.
Under the situation that designs air vent hole (31,32) on the speculum 20, send into natural wind like this, then, contact, then, come out from the air vent hole (vent) 32 that is positioned at upside with the top 11a of luminous tube 11 from the air vent hole (wind pushing hole) 31 that is positioned at downside.That is,,,, air 31 is entered from entering the mouth, contact, then, come out from exporting 32 with the top 11a of luminous tube 11 by free convection even do not use the convection current of cooling fan generation of forced if constitute structure shown in Figure 1.According to the inventor's research, reach 992.5 ℃ in the temperature of the top 11a that does not have luminous tube 11 under the air vent hole situation, under the situation of design air vent hole 31,32, drop to 985.3 ℃, even without cooling fan, also can descend about 7 ℃.
With reference to Fig. 2, further specify the structure of present embodiment.Fig. 2 (a) briefly shows the end view of cross-sectional configuration of the lamp that has speculum of present embodiment, and Fig. 2 (b) is the back view that arrow 45 directions in Fig. 2 (a) are seen, Fig. 2 (c) is the simulation drawing that air flows in the lamp that has speculum is shown.
Shown in Fig. 2 (b), air vent hole 31,32 be arranged on lamp 10 be the center diagonal quadrant (first quartile and third quadrant or second and four-quadrant in), be formed on as on the upper/lower positions, promptly under air nature mobility status, the air that enters from air vent hole 31 (inlet) contacts with the top 11a of luminous tube 11 and from air vent hole (outlet) 32 outflows.Shown in Fig. 1 (b), air vent hole 31 is formed on the speculum 20 with the mode that the top 11a of luminous tube 11 contacts with 32 the two line 35 according to the central portion formation that is connected air vent hole 31 central portions and air vent hole 32.And air vent hole 31,32 is positioned at the cross section that comprises field, luminous tube 11 place.
Shown in Fig. 2 (c), have under the situation of the lamp that has speculum of the speculum 20 that is formed with air vent hole 31,32, also confirm to make the free convection air that produces because of heating in the lamp work to contact by analog result with the top 11a of luminous tube 11.
For natural wind is contacted with the top 11a of luminous tube 11, consideration is being provided with air vent hole, the air vent hole more than 3 is being set directly over the luminous tube 11, but the inventor has studied the result that the air vent hole more than tens kinds is provided with form, finds successful example except the present embodiment structure shown in Figure 2.At first, in the hermetic type speculum of front glass is installed, only be provided with in the structure of an air vent hole,, have only free convection can not cool off the top 11a of luminous tube 11 owing to there is not natural wind to blow over.
In structure shown in Figure 3, in two air vent holes 31,32 any one be not arranged on yet luminous tube 11 directly in the field, an air vent hole 132 shown in Figure 4 be arranged on luminous tube 11 directly over, air vent hole 131 be arranged on luminous tube 11 under example.Think top 11a by luminous tube 11 directly over be provided with air vent hole 132, natural wind can cool off the top 11a of luminous tube 11, but inventor's result of study finds that natural wind 30 by near the side of luminous tube 11, does not contact with the top 11a of luminous tube 11.Therefore, in structure shown in Figure 4, can not cool off the top 11a of luminous tube 11.
Fig. 5 illustrates the example that is provided with 4 air vent holes.Air vent hole 141-144 is that the center lays respectively in first to fourth quadrant with luminous tube 11.Consider to compare with the structure of two air vent holes of shown in Figure 3 design, the structure of four air vent holes of design can be utilized the top 11a of natural wind cooling luminous tube 11., inventor's result of study is that natural wind 30 passes through not contact the top 11a of luminous tube 11 near the side of luminous tube 11.Therefore, even structure shown in Figure 5 can not be cooled off the top 11a of luminous tube 11.
Fig. 6 illustrates the example of three air vent holes of design, even still design the structure of three air vent holes (151 to 153), natural wind 30 can not contact the top 11a of luminous tube 11, promptly can not cool off the top 11a of luminous tube 11.Therefore, though in structure shown in Figure 3, can form following flowing: from entering the mouth the top 11a of the 31 air contact luminous tubes 11 that enter and flow out from exporting 32, in the structure of Fig. 4 to Fig. 6 in addition, so mobile confusion.That is, do not have in the structure shown in Figure 3 to form and make this chaotic air vent hole that flows.
And the lamp that has speculum of present embodiment does not design air vent hole around the stem 26 of speculum 20.Consideration is at the reflecting surface design air vent hole of speculum 20, also the stem 26 at speculum 20 designs air vent holes, the top 11a of the enough natural air cooled but luminous tubes 11 of energy, if but the inventor's result of study is found also to design air vent hole around the stem 26 of speculum 20, on the contrary, chaotic and die down towards the air of the top of luminous tube 11 11a stream.
Fig. 7 (a) is schematically shown in the sectional stereogram that the upper and lower that is positioned near the speculum the front glass and the horizontal two ends design of the stem of inserting lamp have the structure of air vent hole.Fig. 7 (b) is the back view (having only half) that structure shown in Fig. 7 (a) is shown.Fig. 7 (c) is the simulation drawing that this structure hollow air-flow is shown.
In structure shown in Figure 7, though in front side design four air vent holes altogether up and down and about the level of stem 26, the analog result shown in Fig. 7 (c) is than result's decline of the present embodiment shown in Fig. 2 (c).With Fig. 2 (c) comparison diagram 7 (c) situation is the top 11a that natural wind (cooling air) can not contact (even contact, wind is also weak) luminous tube 11 effectively, therefore can see, in the structure shown in Fig. 7 (c), can not effectively cool off the top 11a of luminous tube 11.
If utilize structure shown in Figure 7, for example consider to flow out the top 11a that can cool off luminous tube 11 from air vent hole 155 or 157, have only free convection power to be difficult to make cooling air effectively by stem (lamp insertion section) side but result of study demonstrates from the air that air vent hole 156 enters.Result of study according to the inventor, in structure shown in Figure 7, temperature is not that the temperature of top 11a of 992.5 ℃ luminous tube 11 drops to 990.6 ℃ when design air vent hole 155 grades when having air vent hole, although find to design four air vent holes, descends and approximately has only 2 ℃ yet.
Shown in Fig. 8 (a) to (c) in the structure, be that design has the air vent hole that is tilted at the air vent hole that connects on the incline direction directly over the luminous tube with at the horizontal left and right directions of stem 26 three air vent holes altogether.Analog result shown in Fig. 8 (c) is identical with the analog result shown in Fig. 7 (c), than result's decline of the present embodiment shown in Fig. 2 (c).That is, under the situation of Fig. 8 (c), natural wind (cooling air) can not contact the top 11a (even contact, wind is also weak) of luminous tube 11 effectively, can not cool off the top 11a of luminous tube 11 effectively.In structure shown in Figure 8, temperature is not that the temperature of top 11a of 992.5 ℃ luminous tube 11 only drops to 991.7 ℃ when design air vent hole 161 grades when having air vent hole, descends and approximately has only 0.8 ℃.
Though the inventor has also studied the situation of other various forms air vent hole combinations, but any situation all shows 1 ℃ of level of decline or less than 1 degree (even structure shown in Figure 7 also only descends 2 ℃), lets alone 7 ℃ of these distinguished point that descend in the present embodiment structure.
Though the air vent hole 31 shown in the present embodiment and 32 is a rectangle shown in Fig. 2 (b), shown in Fig. 9 (a), also can be roughly rounded (for example circular, oval, Long Circle).And any one in two air vent holes 31 and 32 or two are made of also passable shown in Fig. 9 (b) a plurality of through holes.Though do not utilize 1 through hole but utilize a plurality of through holes to constitute air vent hole 31 or 32 and have the shortcoming that increases by the contact resistance of air, but because the size of through hole is little one by one, just in case lamp when damaging, can obtain further to reduce the fly out special result of possibility of flying.And, obtaining under such special result situation, shown in Fig. 9 (c), also can design the screen cloth 34 that (perhaps more than two) cover through hole.
Below, the most suitable condition of exemplary illustration present embodiment structure.The luminous tube 11 of high-pressure discharge lamp 10 is roughly spherical in shape.Constitute by quartz glass.High-pressure discharge lamp 10 can use high-pressure mercury-vapor lamp, metal halide lamp (comprising no mercury metal halide lamp) etc.In the present embodiment, use the AC type high-pressure mercury-vapor lamp.And, for the high-pressure mercury-vapor lamp (particularly extra-high-pressure mercury vapour lamp) of realizing having good characteristics such as long-life, the quartz glass that constitutes luminous tube 11 preferably uses the high-purity quartz glass of alkali metal impurity level low (for example the quality of various alkali metal impurities is below 1ppm).And, certainly, also can use the quartz glass of common alkali metal impurity level.For example about 5mm-20mm, the thickness of glass of luminous tube 11 is for example about 1mm-5mm for the external diameter of luminous tube 11.Discharge space volume in the luminous tube 11 is (0.01-1cm about 0.01-1cc for example
3).The luminous tube 11 that uses in the present embodiment, external diameter are about 9mm, and internal diameter is about 4mm, and the volume of discharge space is about 0.06cc.
Be relatively set with pair of electrodes (electrode bar) 15 in the luminous tube 11.The front end of electrode bar 15 with 0.2-5mm about interval (arc length) D of (for example 0.6-1.0mm) be arranged in the luminous tube 11, pair of electrodes 15 is made of tungsten (W) respectively.In order to be implemented in the purpose that reduces the temperature of electrode front end when lamp is worked, the preferred winding around of the front end of electrode 15 (for example tungsten system coil).
Enclose mercury in the luminous tube 11 as luminescent substance.Under lamp 10 working conditions as extra-high-pressure mercury vapour lamp, for example enclose in the luminous tube 11 about 150mg/cc or the mercury of above (150-200mg/cc or more than) and the low density gas (for example argon gas) of 5-30kPa, also can enclose a small amount of halogen as required.
The halogen of enclosing in the luminous tube 11 works the halogen cycle effect that makes the W (tungsten) that evaporates from electrode 15 in the lamp work turn back to electrode 15 once more, for example is bromo element.The halogen of enclosing not only can be the simple substance form, also can be the form (compound form) of halogen precursor, is with CH in the present embodiment
2Br
2Form imports halogen in the luminous tube 11.And, in the present embodiment, CH
2Br
2Enclosed volume be about 0.0017-0.17mg/cc, be equivalent to about 0.1-1 μ mol/cc if be converted into the halogen atom density in lamp when work.And, the compressive resistance of lamp 10 (operating pressure) be 5-20MPa or more than.And rated power for example is more than the 80W, and under the remarkable situation of high-output power, preferably (load of tube wall is about as much as 130W/cm in this case at 150W
2) or more than.The tube wall load is for example at 130W/cm
2About more than, do not have special capping.Illustrate as an example, because the tube wall load is for example at 130W/cm
2About more than, can realize 300W/cm
2Left and right sides scope is interior (preferably at 130-200W/cm
2About) lamp.
The lamp that has speculum 100 of present embodiment is owing to a part of opening (air vent hole) at speculum 20, and the reflecting surface area of speculum 20 has reduced.So, generally do not adopt the structure of the area of such minimizing speculum 20, but in the present embodiment,, can utilize the cooling air cooling lamp 10 of free convection yet even in order not use cooling fan, therefore reduced the area of speculum 20., the speculum area reduces and has reduced light quantity to a certain extent, therefore, and the part that reduces in order to compensate, the preferred higher high-pressure discharge lamp 10 of output that uses.
The maximum gauge of the reflecting surface of speculum 20 is below 45mm, in order further to satisfy the requirement of miniaturization, preferred 40mm or following.And, the wide peristome 24 of speculum 20 is equipped with front glass 22, constitute airtight in fact structure in the speculum 20, if but the air that not overslaugh enters from air vent hole 31 (inlet) contacts the top 11a of luminous tube 11 and comes out from air vent hole (outlet) 32, it is also passable to design through hole again outside air vent hole 31,32.Such air vent hole for example can be a through hole that the exterior guiding line lead-out wire that is electrically connected with the exterior guiding line 17 that is arranged in the exit direction side is drawn from speculum 20.The internal volume of the speculum 20 that is limited by the reflecting surface of front glass 22 and speculum 20 is for example at 200cm
3Below.If example illustrates speculum 20 and its focal spot size in the present embodiment, the diameter phi of wide peristome 24 is approximately 45mm, and the depth D of speculum 20 is approximately 33mm.The reflector shape of speculum 20 is circular under the situation about seeing from the front, and the shape of part that the speculum 20 of front glass 22 is installed can be rectangle or square.The volume of speculum 20 is approximately 40000mm
3, promptly be approximately 40cc.Speculum 20 is under the elliptical mirror situation, and the bosom of speculum 20 is respectively about 8mm and 64mm to the distance between focal point F 1, the F2.
Though the size of air vent hole 31 and 32 can suitably determine according to the size of the speculum 20 of the lamp 100 that has speculum and the ability of lamp 10, for example air vent hole 31 and 32 area separately are 26.5mm
2And air vent hole 31 and 32 area separately are preferably at 10mm
2Above 50mm
2Below.If at 10mm
2Below, the air capacity of free convection is insufficient, can not fully cool off, greater than 50mm
2Under the situation, the light quantity of reflection is few, is not suitable for as light source.And in structure shown in Fig. 1 (b), the formation position of air vent hole 31 is the center with lamp central shaft 40, from trunnion axis 41 in-75 ° of scopes for example at 45, on the one hand, the formation position of air vent hole 32 is the center with lamp central shaft 40, is for example becoming in 60 ° of-90 ° of scopes from vertical axis 42.And, for example can after finishing, on institute's allocation, pass through by speculum the drill bit opening, and utilize file to be modified into four jiaos of holes (in other words being roughly rectangular notch) then and make air vent hole 31 and 32.And, under circular port (circular notch) situation, can only make opening by drill bit.And the part of air vent hole 32 is reverberation not, so emergent light partly reduces deepening, thus optimizing breathing hole 32 be shaped as rectangle, lower than the degree of deepening under the circular situation.
Contact the top 11a of luminous tube 11 for the cooling air that makes free convection, preferably constituting the imaginary line 35 that the central portion of the central portion that connects air vent hole 31 and air vent hole 32 produces also leans on last top (11a) to contact with the ratio of luminous tube 11 by its central horizontal line 31, if but according to be positioned at first and third quadrant or second and four-quadrant mode make two air vent holes 31,32 are present in the diagonal quadrant, even be difficult to cool off effectively the top 11a of luminous tube 11, still more also can cool off the part (side etc.) of luminous tube 11 effectively with the structure (for example Fig. 4 to Fig. 8) of not diagonal angle setting.At this moment, the interconnective imaginary line in top of air vent hole 31,32 preferably also contacts by last top with the ratio central part of luminous tube 11.
The lamp that has speculum 100 according to present embodiment, be arranged in as the roughly vertical cross section in the cross section of speculum 20 and comprise on the cross section (44) of luminous tube 11 at two air vent holes (31,32) with sealing 12 bearing of trends (40), these two air vent holes (31,32) form with combining form be present in the diagonal quadrant (promptly first and third quadrant or second and four-quadrant), therefore utilize the free convection of the thermosetting that produces in the lamp luminescence process, can utilize the air cooling luminous tube 11 that enters from an air vent hole 31.If connecting the central portion of air vent hole 31 also contacts by last top (11a) by central horizontal line 31 with the ratio of luminous tube 11 with the formed imaginary line 35 of the central portion of air vent hole 32, the cooling air 30 of the free convection that enters from air vent hole 31 is blowing to the top 11a that can cool off luminous tube 11 between the air vent hole 32, therefore can more effectively cool off high-pressure discharge lamp 10.Therefore,, also can cool off high-pressure discharge lamp 10, therefore can realize the miniaturization of image projection device even do not use cooling fan in the image projection device.In addition, the noise that cooling fan produces can be eliminated, the low cost of cooling fan element can be realized.And, even use cooling fan, also can use the low cooling fan of cooling capacity, so effect is very big.That is, the cooling fan relative size that cooling capacity is low is smaller, therefore can realize the miniaturization of image projection device.And the cooling fan noise that cooling capacity is low is little, and cost is low, can realize reducing noise, and, can realize low cost.And, using under the situation of cooling fan, in structure shown in Figure 11, use suction fan and ventilating fan the two, but also can adopt the structure of one of only using in the two, so also can realize the miniaturization of image projection device.
For the requirement of image projection device miniaturization nowadays, can guarantee that the design freedom meaning is very great.And, in order to realize miniaturization, do not use air vent hole 31,32, do not have cooling fan or use under the image projection device situation of the low cooling fan of cooling capacity making, this have speculum lamp life-span since the big calorimetric of the height output high-pressure discharge lamp generation of nowadays using shorten.Because the obtained progress of research and development in recent years, the life-span of the high-pressure discharge lamp that image projection device uses significantly improves, but the life-span under the state in being assembled into image projection device is short, just significantly reduces the technological value of this high-tension discharge lamp with long service life.According to the lamp that has speculum 100 of embodiment of the present invention, also has the technical meaning that prevents that the life-span like this from reducing.
The lamp that has speculum 100 of present embodiment can former state or is installed in the image projection device of the forms such as projecting apparatus of for example using liquid crystal projection apparatus or DMD with form that the lamp box of the lamp of supporting to have speculum is combined into the lamp unit, uses with light source as projecting apparatus.And (the optical system combination of DMD (digital micromirror device: Digital Micromirro Device) panel or liquid crystal panel etc.) can the composing images projection arrangement with comprising image component for such speculum lamp (perhaps lamp unit) that has.For example, can provide the projecting apparatus (DLP Digital Light Processing (DLP) projecting apparatus) or the liquid crystal projection apparatus that use DMD (to comprise and adopt LCOS (silicon liquid crystal: the reflection type projector of structure Liquid Crystal on Silicon)).
For example, the lamp that has speculum 100 of present embodiment as shown in figure 12, can be used as the light source use that the DLP projecting apparatus is used.Figure 12 briefly shows the structure of single format DLP projecting apparatus, and DLP projecting apparatus shown in Figure 12 has lamp 100 and the optical system 90 that has speculum.Optical system 90 comprises: be configured in the lamp 100 that has speculum exit direction 50 the place ahead colour wheel 70, will be through the DMD panel 80 (constituting) of light 54 reflection of colour wheel 70 by a plurality of DMD82, will be transformed to projection light 58 from the light 56 of DMD panel 80 projections and project to projecting lens 84 on the screen 86.
After carrying (for example R) of the same colour in the three primary colors (R, G, B) of the colour wheel 70 that light 51 that the lamp 100 of speculum penetrates for example changes by per second 120, project DMD panel 80, project to then on the screen 86 through collector lens (not shown).Under the situation of single format DLP projecting apparatus, DMD82 by DMD panel 80 opens and closes repeatedly with the rotating speed of per second several thousand to several ten thousand, R, G that will be by colour wheel 70, each color of B are instantaneous overlapping, utilize the people eyes the persistence of vision effect and piece image is projected on the screen 86.
And, the lamp that has speculum of present embodiment except using as the light source of image projection device, also can be used as ultraviolet exposure with light source or sports ground with the uses such as projector light source of the head lamp of light source, automobile with light source, illuminating road sign.Using under the light source operating position,, this moment, be not limited to the structure in these present embodiments under the approximate horizontal state though the central shaft 40 of lamp and trunnion axis 41 are roughly out-of-level as projector.
Above, by preferred forms of the present invention the present invention has been described, but has been not limited to above-mentioned situation, certainly carry out various improvement.
Claims (21)
1, a kind of lamp that has speculum has:
High-pressure discharge lamp, this high-pressure discharge lamp have inner enclose luminous tube that luminescent substance is arranged and the sealing that extends from the two ends of described luminous tube; With
Reflect the reflection of light mirror of described high-pressure discharge lamp emission, it is characterized in that:
Described speculum has peristome in exit direction the place ahead, and is provided with front glass at described peristome,
Be formed with two air vent holes on the described speculum,
Described two air vent holes are arranged in as the cross section of described speculum with cross section described sealing bearing of trend approximate vertical and comprise on the cross section of described luminous tube,
With described luminous tube is the center, with described cross section as by first, second, third and four-quadrant constitute the field time, described two air vent holes be combined to form for image position in first and third quadrant or second and four-quadrant be positioned at diagonal quadrant like that.
2, the lamp that has speculum according to claim 1 is characterized in that: connect the central portion separately of described two air vent holes and the imaginary line that forms also contacts by last top with the ratio central authorities of described luminous tube.
3, a kind of lamp that has speculum has:
High-pressure discharge lamp, described high-pressure discharge lamp have inner enclose luminous tube that luminescent substance is arranged and the sealing that extends in general horizontal direction from the two ends of described luminous tube; With
Reflect described high-pressure discharge lamp and send the reflection of light mirror, it is characterized in that:
Described speculum has peristome in exit direction the place ahead,
Be formed with two air vent holes on the described speculum,
Described two air vent holes are with respect to the roughly vertical straight line by described luminous tube central authorities, from described peristome see separate configuration about,
An air vent hole in described two air vent holes is positioned at the oblique upper of described luminous tube, and another air vent hole relative with a described air vent hole is positioned at the oblique below of described luminous tube,
The ratio that connects imaginary line that the central portion of a described air vent hole forms with the central portion of described another air vent hole and described luminous tube also contacts by last top by the horizontal line of central authorities.
4, the lamp that has speculum according to claim 3 is characterized in that:
Described high-pressure discharge lamp has inner enclose luminous tube that luminescent substance is arranged and a pair of sealing that extends from the two ends of described luminous tube,
Described speculum has wide peristome that is arranged in exit direction the place ahead and the narrow opening portion that inserts a sealing of described a pair of sealing,
The wide peristome of described speculum is equipped with transparent member.
5, a kind of speculum lamp that has has:
High-pressure discharge lamp, described high-pressure discharge lamp have inner enclose luminous tube that luminescent substance is arranged and the sealing that extends from the two ends of described luminous tube; With
Reflect the reflection of light mirror that described high-pressure discharge lamp sends, it is characterized in that:
Described speculum has peristome in exit direction the place ahead, and described wide peristome place is provided with front glass,
Be formed with two air vent holes on the described speculum,
Described two air vent holes are arranged in as the cross section of the cross section and the bearing of trend approximate vertical described sealing of described speculum and comprise on the cross section of described luminous tube,
With described luminous tube is the center, with described cross section as by first, second, third and four-quadrant constitute the field time, described two air vent holes be combined to form for image position in first and third quadrant or second and four-quadrant be positioned at diagonal quadrant like that,
An air vent hole and another air vent hole when described high-pressure discharge lamp is luminous in described two air vent holes play air intake and outlet respectively, and
Under described natural convection air situation, air vent hole in described two air vent holes and another air vent hole are configured in that the air that enters from described inlet contacts with the top of described luminous tube and from such position that described outlet is gone out.
6, the lamp that has speculum according to claim 5 is characterized in that: the air vent hole that flows that described speculum does not form that air that upset enters from described inlet contacts with the top of described luminous tube and goes out from described outlet.
7, the lamp that has speculum according to claim 1 is characterized in that: in described two air vent holes any one all be not arranged on described luminous tube directly over.
8, the lamp that has speculum according to claim 3 is characterized in that: in described two air vent holes any one all be not arranged on described luminous tube directly over.
9, the lamp that has speculum according to claim 5 is characterized in that: in described two air vent holes any one all be not arranged on described luminous tube directly over.
10, the lamp that has speculum according to claim 1 is characterized in that: described high-pressure discharge lamp is to enclose amount of mercury at 150mg/cm
3Above high-pressure mercury-vapor lamp.
11, the lamp that has speculum according to claim 3 is characterized in that: described high-pressure discharge lamp is to enclose amount of mercury at 150mg/cm
3Above high-pressure mercury-vapor lamp.
12, the lamp that has speculum according to claim 5 is characterized in that: described high-pressure discharge lamp is to enclose amount of mercury at 150mg/cm
3Above high-pressure mercury-vapor lamp.
13, the lamp that has speculum according to claim 1 is characterized in that: described high-pressure discharge lamp is the above lamp of 80W.
14, the lamp that has speculum according to claim 3 is characterized in that: described high-pressure discharge lamp is the above lamp of 80W.
15, the lamp that has speculum according to claim 5 is characterized in that: described high-pressure discharge lamp is the above lamp of 80W.
16, a kind of image projection device is characterized in that:
Have the described lamp that has a speculum of claim 1 and
With the described lamp that has speculum is the optical system of light source.
17, a kind of image projection device is characterized in that:
Have the described lamp that has a speculum of claim 3 and
With the described lamp that has speculum is the optical system of light source.
18, a kind of image projection device is characterized in that:
Have the described lamp that has a speculum of claim 5 and
With the described lamp that has speculum is the optical system of light source.
19, image projection device according to claim 16 is characterized in that: the described cooling fan that has the lamp of speculum of cooling is not set.
20, image projection device according to claim 17 is characterized in that: the described cooling fan that has the lamp of speculum of cooling is not set.
21, image projection device according to claim 18 is characterized in that: the described cooling fan that has the lamp of speculum of cooling is not set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101002881A CN1497637A (en) | 2002-10-18 | 2003-10-10 | Lamp with mirror and image projector |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002304217 | 2002-10-18 | ||
| CNA2003101002881A CN1497637A (en) | 2002-10-18 | 2003-10-10 | Lamp with mirror and image projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1497637A true CN1497637A (en) | 2004-05-19 |
Family
ID=34256218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2003101002881A Pending CN1497637A (en) | 2002-10-18 | 2003-10-10 | Lamp with mirror and image projector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1497637A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692795A (en) * | 2011-03-22 | 2012-09-26 | 精工爱普生株式会社 | Light source device and projector |
-
2003
- 2003-10-10 CN CNA2003101002881A patent/CN1497637A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692795A (en) * | 2011-03-22 | 2012-09-26 | 精工爱普生株式会社 | Light source device and projector |
| CN102692795B (en) * | 2011-03-22 | 2015-06-24 | 精工爱普生株式会社 | Light source device and projector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6981782B2 (en) | Lamp with reflecting mirror and image projecting apparatus | |
| CN100435024C (en) | Light source device and projector | |
| CN1707743A (en) | Light source device | |
| JP2010107574A (en) | Light source device and projector | |
| JP2005107470A (en) | Light source device | |
| CN1330389A (en) | Lamp/subassembly and image projector | |
| CN104661005B (en) | Color wheel device, and light source device as well as projection system thereof | |
| JP2002298639A (en) | Light source device and projection display device | |
| US20050073841A1 (en) | Light source apparatus | |
| TWI321260B (en) | Light source unit and projector apparatus | |
| CN1497637A (en) | Lamp with mirror and image projector | |
| JP2005173085A (en) | Light source device and projector using the same | |
| CN101487585A (en) | Light source apparatus, optical apparatus, and image projection apparatus | |
| JP4892938B2 (en) | Light source unit and projector device | |
| CN216561377U (en) | Novel projector | |
| JP5648294B2 (en) | Projector device | |
| CN1139967C (en) | Metal halide lamp | |
| JP2004158447A (en) | Lamp with reflection mirror, and image projection device | |
| JP2011209382A (en) | Light source device and projector | |
| JP3912407B2 (en) | Light source unit and projector device | |
| CN1316762A (en) | Discharge lamp and its lamp assembling unit | |
| JPH07281296A (en) | Light source device and projection type display device | |
| JP5930080B2 (en) | Light source device and projector | |
| JP5858066B2 (en) | Light source device and projector | |
| JP2015084119A (en) | Light source device and projector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |