CN1881522A - High-voltage gas discharge lamp with assistant reflection device - Google Patents
High-voltage gas discharge lamp with assistant reflection device Download PDFInfo
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- CN1881522A CN1881522A CNA2005100770515A CN200510077051A CN1881522A CN 1881522 A CN1881522 A CN 1881522A CN A2005100770515 A CNA2005100770515 A CN A2005100770515A CN 200510077051 A CN200510077051 A CN 200510077051A CN 1881522 A CN1881522 A CN 1881522A
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- discharge lamp
- light
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- reflector
- auxiliary mirror
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Abstract
The invention relates to a high-pressure gas discharging lamp with auxiliary reflector, which comprises a reflective cover, a discharging tube, an auxiliary reflective mirror and a cooling device, wherein the discharging tube is inserted into the neck of reflective cover, while its discharge field is at the inner side of reflective cover; the auxiliary reflective mirror has one auxiliary reflective surface and one through hole, while the auxiliary reflective mirror is sheathed on the discharge tube; the auxiliary reflective surface is toward to the discharge field and the inner side of reflective cover; the auxiliary reflective surface reflects to the ineffective light of discharge field to the reflective cover, to form useful effective light, to improve the density of high-pressure gas discharge lamp; and the cooling device can generate one cooling airflow, to cool the discharge tube and the auxiliary reflective mirror, to keep their temperature under the up limit of working temperature, to prolong the service life.
Description
Technical field
The present invention relates to high-voltage gas discharging light, particularly relate to a kind of assistant reflection device of high-voltage gas discharging light, in order to the reflecting effect of reinforcing reflex cover, to improve effect of light strength.
Background technology
Please refer to shown in Figure 1ly, high-voltage gas discharging light is broadly divided into three parts: reflector 1, discharge lamp 2 and headlight door glass 3.The inboard of reflector 1 forms an ellipsoid or paraboloidal reflecting surface 1a, and discharge lamp 2 then is fixed on the axis of reflector, and the region of discharge 2a of spherical shell shape is positioned on the focus of reflecting surface 1a.3 in headlight door glass is positioned over reflector 1 the place ahead, and invisible spectrums such as filtering infrared light and ultraviolet light only pass through for visible light.
Discharge lamp 2 is given out light by region of discharge 2a, and therefore its light need utilize reflector 1 further reflection ray towards not specific direction projection, makes light change direction of advance, concentrates and throws towards the place ahead.But, passes through the front side wall of reflector 1 for light because being required to be open state, so light that first half sent of region of discharge 2a, and can't drop on the reflecting surface 1a, make the divergence of beam that this is a part of, can't throw towards predetermined direction, form unserviceable invalid smooth A, the light that makes discharge lamp 2 produce can't need be applied to the occasion of directive property light source fully, the ratio of this invalid light, tend to reach 20% to 30% of the discharge lamp 2 integral body amounts of giving out light, influence the service efficiency of discharge lamp 2.
With the required light source of projector is example, in fact the light that produced of discharge lamp 2, it is to disperse in projector inside that the part ratio is arranged, and can't be projeced on the optical lens, and in order to improve the brightness of high-voltage gas discharging light, strengthen the brightness and the contrast effect of projection, have only the discharge lamp 2 of raising to give out light intensity one on the way.Yet, improve the intensity of giving out light and representing the working temperature that must improve discharge lamp 2, still improve working temperature and produce two problems:
One: discharge lamp 2 itself has a working temperature upper limit, can't improve working temperature without restriction, quartz glass with making discharge lamp 2 shells is an example, its safe handling temperature is below 1050 ℃, and the tungsten filament electrode softening point in the region of discharge 2a is about 3400 ℃, in the process of giving out light, skin temperature is maintained below the safe handling temperature of quartz glass, and the temperature of electrode also must maintain below the softening point;
Its two: improve working temperature except the working life that influences discharge lamp 2, also can impact reflector 1, reflector 1 itself can because thermal stress or thermal shock effect and cracked, the reflection coatings on the reflecting surface 1a is also come off by temperatures involved easily, makes reflecting effect; Improve the temperature that reflector 1 and reflection coatings can bear, often must expend the great number cost, yet the benefit that it produced (ratio that the intensity of giving out light improves) but far below the increase of cost, does not meet economic benefit.
Under the prerequisite that does not improve the intensity of giving out light, a reflection unit can be set in discharge lamp the place ahead, on invalid smooth reflected back reflector, make the invalid light that originally can't use form effective light, and directly improve the intensity of giving out light.
At present the method that adopts is that leading portion at discharge lamp installs small mirrors additional, utilize the parabola or the ellipsoid of small mirrors invalid light can be reflected back into reflector, invalid light also can be advanced towards predetermined direction by the reflection of reflector form effective light, need not improve the intensity of giving out light of discharge lamp, just can improve the brightness of high-voltage gas discharging light.The high temperature that is produced when yet discharge lamp is given out light still can exert an influence to small mirrors, and particularly small mirrors is positioned at reflector inside, and very near (or even directly contact) discharge lamp, the heating that directly is subjected to discharge lamp produces high temperature.At high temperature small mirrors deforms easily, makes the focus shift of reflecting surface, invalid light can't be reflexed to correct direction.And since by auxiliary reflector institute beam reflected must be again arc of lighting position by the raw-gas discharge lamp, gaseous discharge lamp must additionally increase once light beam strongly and pass through the temperature rise that caused, great damage is arranged for life-span of gaseous discharge lamp.Existing in addition reflection coatings can only be born usually and is lower than 400 ℃ high temperature, surpasses this high temperature and then reflects phenomenons such as going bad, come off will appear in coatings and speculum material, and lose reflecting effect.If auxiliary reflector uses the bright flooring of metal to make, also can produce distortion, lose burnt negative results because of heat.Therefore in order to improve the working life of small mirrors and gaseous discharge lamp, must expend on the contrary expensive, the shortage economic benefit.Therefore be light harvesting, the receipts optical efficiency of increase discharge lamp group, just must solve the cooling effectiveness of each assembly in design, arrangement and the lamp of assisting reflector simultaneously, the present invention is an effective method.
Summary of the invention
The method of existing raising high-voltage gas discharging light brightness is based on raising discharge lamp working temperature, yet improves the discharge lamp working temperature, the high-voltage gas discharging light manufacturing cost is improved, and its working life also can significantly reduce.And installing the mode that small mirrors reflects invalid light additional, small mirrors must be born the high temperature that is produced when discharge lamp is given out light, and distortion very easily occurs and causes focus shift, or reflect problems such as coatings goes bad, comes off.
Therefore, technical problem to be solved by this invention is to provide a kind of high-voltage gas discharging light with assistant reflection device, and utilize a cooling device to cool off high-voltage gas discharging light inside, prolong the working life of the auxiliary mirror be used to reflect invalid light, can be under the condition of give out light intensity and the working temperature that do not change discharge lamp, change invalid light into effective light, improve the brightness of high-voltage gas discharging light.
To achieve these goals, the invention provides a kind of assistant reflection device of high-voltage gas discharging light, include reflector, discharge lamp, auxiliary mirror and cooling device, utilize cooling device that reflector inside is directly cooled off, the temperature maintenance that makes this auxiliary mirror will can not be projected to the invalid light of reflector originally effectively, reflexes on the reflector under the working temperature upper limit, to form effective light, advance towards predetermined direction.Wherein: the medial surface of reflector has one and presents ellipsoid or paraboloidal main reflecting surface, and in addition, the reflector outside has one along the outwards outstanding neck of axis, and neck central authorities offer a perforating.Discharge lamp has a region of discharge, in order to emit beam, the rear end of this discharge lamp is inserted in this perforating, make the front end of region of discharge and discharge lamp be positioned at the reflector inboard, and this region of discharge is positioned at the focus of main reflecting surface, in addition, and between perforating and the discharge lamp, form an air-flow channel, but cooling but air-flow by passing through between perforating inwall and the discharge lamp.Auxiliary mirror has a boosting reflector and a perforation, this auxiliary mirror is sheathed on the leading portion of this discharge lamp with this perforation, simultaneously boosting reflector is reached this main reflecting surface towards this region of discharge, the invalid light that makes this boosting reflector region of discharge can be sent reflexes to this main reflecting surface, again by the place ahead projection of reflection orientating reflex cover, form available effective light, improve the brightness of high-voltage gas discharging light.This cooling device then includes diversion member and air flow-producing device, diversion member forms one and is arranged with portion, in order to diversion member is covered in the neck of reflector, the side of diversion member is provided with an air vent hole, be communicated with the diversion member outside and be arranged with portion, utilize air flow-producing device that air vent hole is blown or bled, can drive a cooling blast by air vent hole and air-flow channel, reflector inside is cooled off, the temperature maintenance that makes gaseous discharge lamp surface temperature and auxiliary mirror is under its working temperature upper limit, the unlikely softening transform that occurs, cause the phenomenon of focus shift, or the rotten problem that comes off of reflecting surface coatings, prolong working life, effectively performance improves the effect of strengthening brightness.
Effect of the present invention is, auxiliary mirror can reflex to the invalid light that originally can't use on the reflector once again, form effective light, throw towards predetermined direction, can or else change under the situation of the intensity of giving out light of discharge lamp, the brightness that just can effectively improve high-voltage gas discharging light need not improve the working temperature of discharge lamp, make the working life of discharge lamp and reflector unaffected, and reduce and improve the required cost that expends of brightness.And cooling device can directly be cooled off auxiliary mirror by the outside cooling blast that imports of reflector, and the high temperature that the protection auxiliary mirror is not produced by discharge lamp destroys, and can keep the life-span of auxiliary mirror, keeps the effect that improves brightness.
Detailed features of the present invention and advantage, its content is enough to make any correlation technique person of haveing the knack of to understand technology contents of the present invention and implements according to this, and advantage any and of the present invention and purpose can be easily from the disclosed content of present disclosure, claim and graphic understanding.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1 is the generalized section of the high-voltage gas discharging light of prior art;
Fig. 2 is the section decomposing schematic representation of preferred embodiment of the present invention;
Fig. 3 is an application schematic diagram of the present invention;
Fig. 4 and Fig. 5 are the generalized section of preferred embodiment of the present invention; And
Fig. 6 and Fig. 7 are the generalized section of another preferred embodiment of the present invention.
Wherein, Reference numeral:
1 reflector
The 1a reflecting surface
2 discharge lamps
The 2a region of discharge
3 headlight door glass
10 reflectors
11 main reflectings surface
12 necks
13 perforatings
14 air gaps
20 headlight door glass
30 discharge lamps
31 region of discharges
40 auxiliary mirrors
41 boosting reflectors
42 fixed parts
43 perforation
44 ceramic paste or ceramic cement
50 cooling devices
51 diversion members
511 are arranged with portion
512 air vent holes
52 air flow-producing devices
60 cooling devices
61 diversion members
612 air vent holes
613 conduits
62 air flow-producing devices
The invalid light of A
The effective light of B
Embodiment
See also Fig. 2 and shown in Figure 3, be a kind of high-voltage gas discharging light that a preferred embodiment of the present invention provided, the invalid light that discharge lamp produces can be reflected, change its projected path with assistant reflection device, and form effective light, to improve the illuminating effect of high-voltage gas discharging light group.
The high-voltage gas discharging light that the present invention has assistant reflection device includes: reflector 10, headlight door glass 20, discharge lamp 30, auxiliary mirror 40 and cooling device 50.
Wherein the medial surface of reflector 10 forms a main reflecting surface 11, and this main reflecting surface 11 presents parabola or ellipsoid form usually.And the lateral surface of reflector 10 forms an outwards outstanding neck 12 (Neck) corresponding to axial location, and the central axis of neck 12 then has a perforating 13.20 in headlight door glass is covered in reflector 10 front sides, in order to invisible spectrums such as filtering infrared light and ultraviolet lights, only passes through for visible light.And reflector 10 front sides and headlight door glass 20 junctions have minim gap, form air gap 14 (Air Gap), and this air gap also can be the hole that leave reflector 10 front sides, but supplied gas pass through, inside and outside the reflector 10 that ventilates.
And discharge lamp 30 can generally be divided into leading portion, stage casing and back segment, wherein 30 stage casings of discharge lamp form one spherical or elliptoid region of discharge 31, the electrode of discharge lamp 30 then is positioned at this region of discharge 31, by electronic type control circuit exciting electrode and region of discharge 31 inner filling components, formation electric arc is given out light, and the light of dispersing towards specific direction not.The back segment of discharge lamp 30 then is positioned in the perforating 13 of reflector 10, the internal diameter of perforating 13 is slightly larger than the external diameter of discharge lamp 30, make and form an air-flow channel between perforating 13 and the discharge lamp 30, discharge lamp 30 is fixed with fixing means such as ceramic paste or ceramic cements, the coating of heatproof ceramic cement or ceramic paste need meet the principle of cooling blast design, and reserves but air communication mistake of certain hole cooling.The leading portion of discharge lamp 30 and region of discharge 31 be corresponding to main reflecting surface 11, and region of discharge 31 is positioned at the focus of main reflecting surface 11, with light that region of discharge 31 is emitted by reflection after, the place ahead projection of orientating reflex cover 10.
In the process of assembling auxiliary mirror 40, coat the ceramic paste or the ceramic cement 44 of discharge lamp 30 earlier in advance in the leading portion precalculated position of discharge lamp 30, again auxiliary mirror 40 is put, make fixed part 42 be positioned at ceramic paste or ceramic cement 44, utilize ceramic paste or ceramic cement 44 auxiliary mirror 40 to be fixed on the leading portion of discharge lamp 30, again headlight door glass 20 is installed in reflector 10 the place aheads afterwards, can finishes the assembling of auxiliary mirror 40 and the assembling of high-voltage gas discharging light.This ceramic paste or ceramic cement 44 can be brought into play effect of heat insulation, avoid auxiliary mirror 40 directly to contact with discharge lamp 30, high temperature when avoiding discharge lamp 30 work damages auxiliary mirror 40, form the stress buffer effect simultaneously, excessive when avoiding high temperature because of discharge lamp 30 and auxiliary mirror 40 expansion coefficient differences, and extruding produces cracked mutually.
50 of cooling devices can further produce a cooling blast, enter reflector 10 inside, directly cool off at region of discharge 31 and auxiliary mirror 40.Cooling device 50 includes diversion member 51 and air-flow cooling device 51, and wherein diversion member 51 includes depressed part 511, and in order to diversion member 51 is covered in the neck 12 of reflector 10, the side of diversion member 51 is provided with air vent hole 52.52 of air flow-producing devices are blown or are bled corresponding to air vent hole 52 in diversion member 51 outsides, in order to produce cooling blast by air vent hole 52, so that cooling blast enters reflector inside, region of discharge 31 and auxiliary mirror 40 are cooled off.
The present invention utilizes the main reflecting surface 11 of the invalid smooth A of auxiliary mirror 40 reflections to reflector 10, by the invalid smooth A of main reflecting surface 11 reflections, it is throwed towards the place ahead again, changes effective light B into.When discharge lamp 30 is given out light, the light that region of discharge 31 first halfs are sent can not project main reflecting surface 11, therefore this a part of light can't change directions of advance by main reflecting surface 11 reflections, but disperses the invalid smooth A of formation towards specific direction not, can't be as the usefulness of centralized lighting.And the present invention is provided with auxiliary mirror 40 in region of discharge 31 the place aheads, this invalid smooth A can throw on the boosting reflector 41 earlier, utilize boosting reflector 41 invalid smooth A to be reflexed on the main reflecting surface 11 of reflector 10, reflect these invalid smooth A and change the light progress path by main reflecting surface 11 then, make originally can't centralized lighting invalid smooth A also can advance towards predetermined direction, change effective light B into, and strengthen the brightness of high-voltage gas discharging light, do not need to improve again the intensity of giving out light of discharge lamp 30.In high-voltage gas discharging light, the working temperature of discharge lamp 30 can improve along with the intensity of giving out light, make the life-span of reflector 10 and discharge lamp 30 reduce, and in the present invention, auxiliary mirror 40 can change original invalid smooth A into effective light B, gives out light under the prerequisite of intensity the brightness that directly improves high-voltage gas discharging light not changing discharge lamp 30, make discharge lamp 30 can keep lower working temperature, prolong the life-span of discharge lamp 30 and reflector 10.
Please consult Fig. 4 and shown in Figure 5 again, air flow-producing device 52 can take to blow or air-breathing mode turns round, make cooling blast enter diversion member 51 by air vent hole 512, by the perforating 13 that is positioned at neck 12, region of discharge 31 and auxiliary reflection 40 are cooled off, and the hot-air after the heat absorption is left by air gap 14; Or by air gap 14 cooling blast is sucked, the hot-air after the heat absorption enters diversion member 50 by the perforating 13 of neck 12, is left by air vent hole 512 then.This cooling blast can flow through an ancient piece of jade, round, flat and with a hole in its centre, discharge lamp 30 and auxiliary mirror 40 in the reflector 10, the performance cooling effect, make reflector 10, discharge lamp 30 and auxiliary mirror 40 all can maintain within its operating temperature range, avoid because high temperature is impaired, produce again under the situation of high brightness and prolong its working life simultaneously.
Figure 6 and Figure 7 is the cooling device 60 of another kind of kenel, is installed in the neck 12 of reflector 10.Wherein the outside of diversion member 61 is provided with an outstanding conduit 613 and connects air vent hole 612, and air flow-producing device 62 then is installed on the end of conduit 613, to strengthen the air blowing or the inspiratory effects of air flow-producing device 62.In addition, the fixedly ceramic paste of discharge lamp 30 or ceramic cement 15, be filled in the Lower Half of discharge lamp 30 and perforating 13, cooling blast can only be passed through by the first half, form guide hole kenel on, make cooling effect, only concentrate on the first half for region of discharge 31, and can not cause the mercuryvapour condensation to the Lower Half sub-cooled.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of claim of the present invention.
Claims (4)
1, a kind of high-voltage gas discharging light with assistant reflection device is characterized in that, includes:
One reflector, its inboard are formed with a main reflecting surface, and its outside is formed with a neck, and this neck has a perforating;
One discharge lamp, its stage casing has a region of discharge, in order to send a light, the back segment of this discharge lamp is placed through this perforating, and the aperture of this perforating is greater than the diameter of this discharge lamp, make to form an air-flow channel between the hole wall of this perforating and discharge lamp, this region of discharge is then corresponding to this main reflecting surface;
One auxiliary mirror, have a boosting reflector and a perforation, this auxiliary mirror is placed on the leading portion of this discharge lamp with this perforation, and this boosting reflector is towards this region of discharge and this main reflecting surface, the light that this boosting reflector can send region of discharge reflexes to this main reflecting surface, again by the place ahead projection of reflection orientating reflex cover; And
One cooling device, comprise a diversion member and an air flow-producing device, this diversion member has an air vent hole and a depressed part, one end of this discharge lamp places this depressed part, this air vent hole communicates with this depressed part, and this air flow-producing device is in order to produce a cooling blast by this air vent hole, after this discharge lamp and auxiliary mirror formation heat exchange, and heat stream is discharged.
2, the high-voltage gas discharging light with assistant reflection device according to claim 1 is characterized in that, this discharge lamp is coated with a ceramic paste or ceramic cement, in order to fix this auxiliary mirror.
3, the high-voltage gas discharging light with assistant reflection device according to claim 1 is characterized in that, the outside of this auxiliary mirror forms an outstanding fixed part, and this perforation runs through this fixed part, and this fixed part is sheathed on this discharge lamp.
4, the high-voltage gas discharging light with assistant reflection device according to claim 1 is characterized in that, this discharge lamp is fixed in this perforating with ceramic paste or ceramic cement, and reserves but air communication mistake of a hole cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100770515A CN1881522A (en) | 2005-06-15 | 2005-06-15 | High-voltage gas discharge lamp with assistant reflection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100770515A CN1881522A (en) | 2005-06-15 | 2005-06-15 | High-voltage gas discharge lamp with assistant reflection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1881522A true CN1881522A (en) | 2006-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005100770515A Pending CN1881522A (en) | 2005-06-15 | 2005-06-15 | High-voltage gas discharge lamp with assistant reflection device |
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| Country | Link |
|---|---|
| CN (1) | CN1881522A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110249267A (en) * | 2017-02-02 | 2019-09-17 | 株式会社V技术 | High-pressure discharge lamp |
-
2005
- 2005-06-15 CN CNA2005100770515A patent/CN1881522A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110249267A (en) * | 2017-02-02 | 2019-09-17 | 株式会社V技术 | High-pressure discharge lamp |
| TWI765960B (en) * | 2017-02-02 | 2022-06-01 | 日商鳳凰電機股份有限公司 | High pressure discharge lamp |
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