KR20100075621A

KR20100075621A - High-pressure discharge lamp

Info

Publication number: KR20100075621A
Application number: KR1020107010255A
Authority: KR
Inventors: 헤닝 레흔; 위르겐 뮐러
Original assignee: 오스람 게젤샤프트 미트 베쉬랭크터 하프퉁
Priority date: 2007-10-09
Filing date: 2007-10-09
Publication date: 2010-07-02
Also published as: TW200926894A; WO2009049661A1; KR101084465B1; CN101821832B; CN101821832A

Abstract

The present invention relates to a high-pressure discharge lamp having a burner, wherein the burner is installed on a ceramic and includes electrodes connected to power lines, in which case a contact plate is connected to one of the power lines. The contact plate surrounds a lit auxiliary bubble disposed in the burner and acts as a lit auxiliary device.

Description

High Pressure Discharge Lamp {HIGH-PRESSURE DISCHARGE LAMP}

The present invention relates to a high-pressure discharge lamp according to claim 1.

Such high-pressure discharge lamps such as metal halide lamps and mercury ultrahigh voltage lamps have been supplied by OSRAM GmbH under the family lamp designation VIP ^® & P-VIP and used in the area of multimedia data projection and video projection, for example. do. The corresponding lamp structure is also described in DE 10 2005 017 505 A1. Known such high pressure discharge lamps include a burner having a discharge tube, which is formed with two shafts arranged opposite to each other in opposite directions. Two electrodes are disposed in the discharge tube, and the electrodes are connected to power supply lines through sealing thin films sealed in the shafts. An auxiliary firing device may be provided to improve the lighting operation, wherein a lighting auxiliary bubble is wound as a wire filament in the shaft region, whereby the lighting assistance device is configured to have the shaft region having the lighting auxiliary bubble. By surrounding and interacting with one of the electrodes, a lighting process is supported when a potential difference is applied. The burner is installed in the ceramic by a binder referred to below as cement.

The lighting assist device may be arranged on the front shaft of the burner provided in the light emitting direction or on the rear shaft on the ceramic side. The advantage of the latter-mentioned alternative is that the light efficiency is slightly increased compared to the lighting aid arranged in the front area of the burner. The lighting aid is wound into the burner area as a wire filament.

Disadvantages of this type of discharge lamps are the high complexity of manufacturing and assembly costs due to the complexity of the manufacture and installation of lighting aids in the form of wire filaments.

An object of the present invention is to provide a lighting assistance device which is inexpensive in terms of cost and simple in installation.

The problem is achieved by a high-pressure discharge lamp including a burner, the burner having a discharge tube having shafts arranged oppositely in the discharge tube, in which the two electrodes are placed facing each other and spaced apart from each other, the electrodes Connected to the power lines through a sealed thin film sealed in the field, in which case the lighting assist device surrounds the area of the shaft with the lighting aid bubble and interacts with one of the electrodes as lighting aid, in this case a burner Is installed in the ceramic, and the lighting auxiliary part is formed of a contact plate. The contact plate fulfills the same function as the wire filament as a lighting aid in the prior art (see DE 10 2005 017 505 A1), but the contact plate is realized as a stamping part, for example, due to the high assembly cost Winding prior to installation in the lamp, the contact angles of the wire filaments for contacting can be made much more economically than wire filaments which are complexly arranged in a high-pressure discharge lamp. By being realized as a plate, the contact plate can also be installed in a high pressure discharge lamp much more simply than a wire filament. In addition, the contact plate may improve lighting of the high-pressure discharge lamp compared to the wire filament. In addition, the contact filaments have a higher strength than the wire filaments such that the contact plates are much more robust to, for example, external force influences, such as impact.

Particularly preferred embodiments are presented in the dependent claims.

Preferably the lit auxiliary bubble is arranged in the region of the ceramic, whereby the contact plate can also be arranged in the ceramic region and can be simply fixed. In addition, the lighting aid does not cause shading in this arrangement during operation of the high-pressure discharge lamp.

The contact plate may comprise a contact nose, the contact nose being used as a fixed area for connecting with the ballast or ballast, in which case the connector of the ballast may be connected on the contact nose, or Can be welded or soldered to the ballast by means of connection elements.

In one preferred embodiment the contact plate is realized flat or flat. Thereby the contact plate can be manufactured particularly simply and inexpensively.

The contact plate may for example be arranged between the ceramic and the reflector and held fixed in a form-fitting manner by these constituent members. In this case the contact plate can be placed on the circular segment regions of the ceramic, extending in the radial direction and actually matched in the support plane of the inner circumferential shape of the ceramic, thereby being fixed in all directions. .

Preferably the contact plate comprises two free cuts, usually wedge shaped, in the region inside the circular segment regions, the circular segment regions being arranged in the region of the free cut portions of the ceramic, in which case the contact The nose may be formed inside such a free cutting portion of the contact plate, thereby providing a connection position with an accessible ballast. In addition, heat dissipation may be improved by the pre-cutting part when the high-pressure discharge lamp is operated.

The free cutting portion having a contact nose formed therein is limited by the plate region, which is disposed on the circular segment regions of the ceramic outside the support region of the contact plate. This allows the plate area to be easily accessible from both sides, ie from the top and bottom surfaces of the contact plate, so that the connection with the power line can be welded very simply, for example.

Preferably the contact plate has one opening in the center, and the burner can extend through the opening.

In a further preferred embodiment the contact plate abuts in section (area) the inner circumferential wall of the through opening of the ceramic. For this reason, the contact plates may be arranged at the smallest interval in the lighting auxiliary bubble direction. In this case the contact plate is preferably bent approximately in the shape of a bow in the center area, in which case a pointed arc shape can also be realized in the center area. The end regions are usually bent outward at right angles, in which case the end regions face each other and are bent once more. Because of this, the end regions can be easily accessed for contacting one of the electrodes and the ballast.

In a further preferred embodiment the contact plate has a plate rim around the opening, the plate rim protruding from the side of the contact plate, the side of the contact plate facing a support area above the circular segment regions of the ceramic. . This may improve the lighting of the high-pressure discharge lamp compared to embodiments without a plate rim.

Power lines assigned to shafts external to the ceramic can penetrate the reflector along the burner towards the contact plate, which is very economical to manufacture.

Power lines assigned to shafts external to the ceramic may also penetrate the bore of the reflector sealed at the side.

The power supply line is made of, for example, NiCr 2 Mg-alloy, so that a high current can be conducted when the electrical losses and resistance are very low, for example, a lamp output significantly higher than 200W can be achieved. In addition, the NiCrMg-alloy can withstand high temperatures.

The invention is described in detail below with reference to embodiments.
1 is a schematic longitudinal cross-sectional view of a high-pressure discharge lamp according to a first embodiment of the present invention,
2 is a perspective view of a ceramic of the high-pressure discharge lamp according to the first embodiment,
3 is a perspective view of a ceramic including a contact plate of a high-pressure discharge lamp,
4 is a plan view of a contact plate according to the first embodiment,
5 is a schematic longitudinal cross-sectional view of a high-pressure discharge lamp according to a second embodiment of the present invention,
6 is a perspective view of a ceramic including a contact plate of a high-pressure discharge lamp according to a second embodiment;
7 is a plan view of a contact plate according to a second embodiment,
8 is a schematic longitudinal cross-sectional view of a high-pressure discharge lamp according to a third embodiment of the present invention,
9 is a perspective view of a ceramic including a contact plate of a high-pressure discharge lamp according to a third embodiment.

1 shows a schematic longitudinal sectional view of an embodiment of a high-pressure discharge lamp 1. The high-pressure discharge lamp is realized as a reflector lamp and includes a burner 2, which is inserted into the ceramic 6 together with the reflector 4. The reflector 4 is for example made of glass and comprises a reflective coating. A front wafer or front cover can be inserted in the front flange edge 8 arranged in the lamp emitting direction. The burner 2 is composed of a discharge tube 10 arranged substantially in the center, in which the two shafts 12, 14 are arranged, which are arranged in the axis of the reflector 4. In the discharge tube 10 are disposed two electrodes 16, 18 facing each other and spaced apart, for example, tungsten, which electrodes are sealed in the shafts 12, 14. Contacts the power lines 24, 26 via, 22. In the illustrated embodiment, the power line 24 assigned to the front shaft 12 penetrates the ceramic 6 along the burner 2 (in the region of the ceramic 6 the power line 24 is shown in broken lines). ). The power supply line 26 assigned to the rear shaft 14 extends through the ceramic 6 in the axial direction. Basically, the front power supply line 24 may also penetrate the sealed bore of the reflector 4 from the side.

In the high-pressure discharge lamp, the discharge tube 10 may be filled with a filler having components consisting of a mixture of mercury, metal halides, rare earth oxides, and inert gas, so that the discharge arc is discharged from both electrodes (at atmospheric pressure and high pressure of halogen and mercury vapor). 16, 18) in between. Mercury ultra-high pressure lamps may also be the case.

A lit auxiliary bubble 28 in the sealed thin film region is formed in the rear shaft 14 facing the ceramic 6 and discharged through the lit auxiliary bubble in a manner known per se (see DE 10 2005 017 505 A1). The lighting operation of the lamp 1 can be improved. In the region of the lit auxiliary bubble 28 a planar contact plate 30 is inserted into the ceramic 6, which is arranged at right angles to the projection plane, for example in the view according to FIG. 1, the contact plate being the outer circumference of the shaft 14. Surrounds. The contact plate 30 is connected to the power line 24 of the front shaft 12, so that the contact plate 30 is contacted with the same potential as the front electrode 16.

In this case, the potential difference between the two electrodes 16, 18 is almost equal between the contact plate 30 and the sealing thin film 22 (the sealing thin film is assigned to the rear electrode 18 and penetrates the bubble 28). The same potential difference is generated.

When the lamp is turned on by a conventional electronic ballast (EVG), the lit auxiliary bubble 28 shows a corresponding discharge along with the corresponding light emission, and as a result, the bubble 28 acts as a lit auxiliary part.

In FIG. 1, a base 32 is provided in the right end region of the shaft 14, and the power supply line 26 extends out of the base.

The structure of the ceramic 6 is described with reference to FIG. 2. FIG. 2 shows a three-dimensional view of the ceramic 6, in which a contact plate 30 (see FIG. 1) is inserted. The ceramic 6 shown is a standard component that can also be used for conventional discharge lamps in which the contact plate 30 is not provided. Since the basic structure is known in nature, only a few major members of the ceramic 6 are described. The ceramic has two circular segment regions 36, 38 lying above with respect to FIG. 2, the circular segment regions being radiated by one cylinder jacket surface region 40, 42 each forming a reflector receiver. Direction, the cylinder jacket surface area protrudes axially parallel in the direction of the reflector 4 in the view according to FIG. 1. One centering cam 44 is formed in each of the transition regions between the cylindrical jacket surface areas 40, 42 and the circular segment areas 36, 38, the centering shoulders 46 of which are according to FIG. 1. Abut the outer circumference of the reflector neck 48. A toggle diameter diaphragm 50 is formed above the back of the ceramic 6, which lies below in FIG. 2 and faces the viewer, the maximum outer diameter of the protrusion being the cylinder jacket surface areas 40, 42. Is smaller than the outer diameter of). When the high-pressure discharge lamp 1 is installed, a shield (not shown) is disposed on the diameter protrusion 50, and the rear power line 26 extends radially out of the shield. The ceramic 6 is freely cut into wedge-shaped free cuts 56, 58 between two circular segment regions 36, 38. The circular segment regions may not be visible because they extend above and below the projection plane in the view according to FIG. 1.

3 shows a contact plate 30 arranged in a ceramic 6 in a perspective view. The contact plate 30 lies generally flat on the surfaces of the circular segment regions 36, 38 (see FIG. 2), in which case the outer periphery of the contact plate is defined by the circular segment regions 36, 38. Matched to the inner contour pattern of the ceramic 6 in a plane, the torsion is prevented by extending along the inner surfaces of the cylinder jacket surface regions 40, 42 and the centering shoulder 46 of the centering cam 44, The result is a fixation in the plane. In the region of the wedge-shaped free cuts 56 and 58 of the ceramic 6 (see FIG. 2), the contact plate 30 is likewise freely cut by the free cuts 60 and 62, in this case viewed from the area side. The free cuts 60, 62 are then smaller than the free cuts 56, 58 of the ceramic 6, and the contact plate 30 is over the circular segment regions 36, 38. The power line is welded to the plate region 63 so that it can be easily reached from the top and bottom surfaces, exposing the contact plate 30 and the plate region 63 used for contacting the power line. In the region of the free cutting portion 62, a contact nose 64 in the contact plate 30 is formed in the form of a protrusion, which is connected with a ballast or ballast (not shown), for example, by a contact connector or welding. . In addition, the outermost circumferential line 65 of the contact plate 30 runs in a circular line. In the interior region the contact plate 30 comprises an opening 66 which lies approximately coplanar with the through opening 67 (see FIG. 2) of the ceramic 6, and the burner 2 (see FIG. 1) is said opening. Extends through;

4 shows a contact plate 30 in a plan view. In this case a circular circumference line 65 of the contact plate is shown. In addition to the pre-cutting portions 60, 62, the contact plate 30 comprises two receptacles 68, 70, which correspond to the circumferential shape of the centering shoulder 46 of the centering cam 44 ( 3, the centering shoulders enter the receptacles 68, 70, thereby fixing the position of the contact plate 30. The plate region 63 for contacting the electrode or power line is shown in broken lines.

In particular, as shown in FIG. 1, in the installation of the high-pressure discharge lamp 1, the contact plate 30 is defined by circular segment regions 36, 38 and cylinder jacket regions 40, 42 (see FIG. 2). Formed into the reflector receiver of ceramic 6. The neck 48 of the reflector 4 is then inserted into the reflector receiving portion and connected to the ceramic 6 by the high heat resistant cement 72. In the subsequent working process, the burner 2 is inserted into the reflector 4 such that the rear shaft 14 passes through the opening 66 of the contact plate so that the reflector neck 48 and the through opening 67 of the ceramic 6 ( 2) and the contact plate 30 housed therein, with the result that the base 32 terminates in the region of the diameter protrusion 50. As shown in FIG. After the orientation with respect to the reflector 4 the burner 2 is likewise fixed in the ceramic 6 and by the cement 76 in relation to the reflector 4, as a result of which maximum light efficiency is ensured. As a result, the contact plate 30 is embedded and fixed between the front surface 78 of the reflector neck 48 and the reflector receiving portion of the ceramic 6. However, basically the contact plate 30 can additionally be fixed by suitable measures, such as cement or the like.

In operation of the high-pressure discharge lamp, only the power line 24 extending along the burner 2 causes shading.

The manufacture of the contact plate 30 and the installation into the high-pressure discharge lamp 1 are much cheaper and simpler than in the case of wire filaments (DE 10 2005 017 505 A1), since the contact plate 30 is stamped parts It is because it is manufactured.

5 is a second embodiment of the high-pressure discharge lamp 1 shown in outlined longitudinal section. The difference from the first embodiment is that the curved contact plate 82 is used instead of the flat contact plate 30 (see FIG. 3) as the lighting assistance device. The curved contact plate is inserted into a region of the through opening 67 of the ceramic 6 in the ceramic 6, in which case the auxiliary light of the burner 2 is turned on in the region where the high-pressure discharge lamp 1 is installed. 28 is arrange | positioned.

FIG. 6 shows in perspective view a ceramic 6 comprising an inserted contact plate 82, in which case a portion of the ceramic 6 is shown in partial sections in order to facilitate an overview of the contact plate 82. . The center region 84 of the contact plate 82 is bowed and fixed in position by contacting the circular inner wall regions 86, 88 (see FIG. 2) of the ceramic through opening 67 in sections. The two end regions 90, 92 of the contact plate 82 constrain the arc shape and bend at right angles in the direction of the walls 94, 96 of the right free cut 58 with respect to FIG. 6. The end regions 90, 92 of the contact plate 82 face each other in the center region and bend at a right angle once more. The contact plate 82 is supported at the head fronts 100, 102 of the radial protrusion 50 in the axial direction with respect to the ceramic through opening 67 by two end regions 90, 92. The end region 92 serves as a contact nose 104 that is connected to a ballast or ballast (not shown), for example by contact connector or gluing, and the other end region 90 is used for welding of the power line.

In FIG. 7 a contact plate 82 is shown in plan view, in which case a double bend of the end regions 90, 92 and a predetermined circular perimeter shape of the center region 84 can be seen.

In order to install the high-pressure discharge lamp according to the second embodiment shown in FIG. 5, the contact plate 82 is set in the ceramic through opening 67, and then the neck 48 of the reflector 4 is the reflector receiving portion. It is set inside, and is connected to the ceramic 6 by a high heat resistant cement 72. In a further work process the burner 2 is inserted into the reflector 4, with the result that the base 32 terminates in the region of the diameter protrusion 50. After the orientation with respect to the reflector 4 the burner 2 is likewise fixed in position in the ceramic 6 and by the cement 76 in relation to the reflector 4. The contact plate 82 is fixed in all directions between the front face 78 of the reflector neck 48 and the head front faces 86 and 88 of the radial protrusion 50 (see FIG. 2). However, basically the contact plate 82 may additionally be fixed by suitable measures, for example cement.

8 shows a third embodiment of the high-pressure discharge lamp 1 in longitudinal section. Different from the first embodiment shown in FIG. 1, the contact plate 30 additionally includes a plate rim 106 which protrudes around the opening 66, which plate rim along the burner 2. In parallel and distally from the ceramic 6 in sections and around the lit auxiliary bubble 28. In this case, the fact that the plate rim can extend in the ceramic 6 direction can be taken into account and can even be carried out.

9 shows in perspective view a ceramic 6 having a contact plate 30 comprising a plate rim 106. The plate rim 106 is formed around the opening 66 and has a Z-shaped structure. The height of the plate rim 106 is chosen such that the plate rim substantially surrounds the lit auxiliary bubble 28 (see FIG. 8). By the plate rim 106, the lighting of the high-pressure discharge lamp 1 can be further improved. The manufacture of the plate rim 106 is made inexpensively, for example by bent-stemping.

The present invention has been described with reference to a high pressure discharge lamp, and basically the concept of the present invention can be used in other lamp types with a lighting aid.

The lifetime or burning time of the high-pressure discharge lamp according to the first or second embodiment is, for example, at least 3000 hours, in which case the luminous flux after this time continues to reach 50% of the new high-pressure discharge lamp luminous flux.

A high-pressure discharge lamp 1 including a burner 2 is described, which includes electrodes 16, 18 installed in the ceramic 6 and connected to power lines 24, 26. In this case, contact plates 30 and 82 are connected to one of the power lines 24 of the power lines, and the contact plate surrounds the lighting assist bubble 28 disposed in the burner 2 to assist lighting. It acts as a device.

Claims

A high pressure discharge lamp provided with a burner 2,
The burner comprises a discharge vessel, the discharge vessel having shafts 12, 14 arranged oppositely on its own, and within the discharge vessel there are two electrodes 16, 18 facing each other and spaced apart. The electrodes are connected to the power lines 24 and 26 through sealing thin films 20 and 22 sealed in the shafts 12 and 14, and the lighting assist device is turned on the lighting assist bubble 28. Surrounds a region of one shaft 12, 14 with) and interacts with one of the electrodes 16, 18 as a lighting aid, the burner 2 is mounted on a ceramic 6,
The lighting auxiliary portion is formed as the contact plates 30 and 82,
High pressure discharge lamp.

The method according to claim 1, wherein the lit auxiliary bubble 28 is disposed in the region of the ceramic 6,
High pressure discharge lamp.

3. The contact plate (30) of claim 1 or 2, wherein the contact plates (30, 82) have contact noses (64), the contact noses being assigned to the shaft (12) outside the ceramic (6). Connected to the power supply line 24,
High pressure discharge lamp.

The method according to claim 1, wherein the contact plate 30 is flat,
High pressure discharge lamp.

5. The contact plate (30) according to claim 4, wherein the contact plate (30) is arranged between the ceramic (6) and the reflector (4), whereby it is fixed in a form-fitting manner.
High pressure discharge lamp.

6. The inner circumference of the ceramic (6) according to claim 4, wherein the contact plate (30) lies on circular segment regions (36, 38) of the ceramic (6) extending radially. Substantially matched within this support plane of shape,
High pressure discharge lamp.

7. The two free cuts (60, 62) of claim 4, wherein said contact plate (30) is substantially wedge shaped outside the support area above said circular segment areas (36, 38). And a contact nose 64 is formed inside the pre-cutting portion 62 having the above-described shape,
High pressure discharge lamp.

8. The method of claim 7, wherein at least one plate region (63) above the circular segment regions (36, 38) of the ceramic is defined by the contact nose (64) to limit the pre-cutting portion (62) on one side. Disposed outside the support area,
High pressure discharge lamp.

8. The burner 2 according to claim 4, wherein the contact plate 30 has an opening 66 at the center, and the burner 2 extends through the opening.
High pressure discharge lamp.

The perimeter region of the contact plate 82 is in contact with the inner perimeter wall of the through opening 67 of the ceramic 6 per region, according to claim 1.
High pressure discharge lamp.

11. The end region 90 according to claim 10, wherein the contact plate 82 is bowed in the center region 84 while the end regions 90 and 92 are bent outward at right angles, the end regions being different from each other. 92) with additional deflection in the direction,
High pressure discharge lamp.

10. The contact plate 30 according to claim 1, wherein the contact plate 30 has a plate rim 106 around the opening 66, the plate rim protruding from one side of the contact plate 30. And the side of the contact plate faces a support area above the circular segment areas 36, 38 of the ceramic,
High pressure discharge lamp.

13. The power supply line (24) assigned to the shaft (12) outside of the ceramic (6) is directed along the burner (2) in the direction of the contact plates (30, 82). Penetrating the reflector 4 into
High pressure discharge lamp.

The power supply line 24 assigned to the shaft 12 outside of the ceramic 6 penetrates the sealed bore of the reflector 4 from the side.
High pressure discharge lamp.

The power supply lines (24, 26) of any of the preceding claims, wherein the power supply lines (24, 26) are made of NiCr2Mg-alloy.
High pressure discharge lamp.