CN101872711B - Discharge lamp and light source device - Google Patents

Abstract

The present invention provides a discharge lamp and a light source device having the discharge lamp. In a discharge lamp having an IC tag on which various information for safely lighting the lamp is recorded, excessive load is not applied to the power supply line or the luminous tube, and it can be used in Attach the IC tag to the lighting device with the IC tag arranged at the desired position. The discharge lamp of the present invention has: a luminous tube (11); a pair of electrodes arranged opposite to each other in the luminous tube (11); a power supply line (21) used to supply power to the electrodes and a power supply line integrally fixed on the power supply line The power supply mechanism (20) formed by the power supply terminal (22) at the front end of (21); the IC tag (40); and the holder (30) made of insulating material that accommodates the IC tag (40), characterized in that: The holder (30) is provided on the power supply mechanism (20) so as to be rotatable around its power supply line (21) or power supply terminal (22) as a rotation axis.

Description

Discharge lamp and light source device

technical field

The present invention relates to a discharge lamp and a light source device. More specifically, the present invention relates to a discharge lamp provided with an IC tag storing various information on the discharge lamp, and a light source device provided with the discharge lamp.

Background technique

A short-arc discharge lamp is used as a light source of an exposure device, a projector, a projector, and the like for patterning a semiconductor, a liquid crystal substrate, a printed circuit board, and the like. As a short-arc discharge lamp used as a light source of an exposure device, a lamp in which mercury and various rare gases are sealed inside a luminous tube is known. On the other hand, as a short-arc discharge lamp used in a projector or projector, There is known a lamp in which a rare gas such as xenon gas is sealed in an arc tube.

In the discharge lamp as described above, if a large impact is accidentally caused when it is transported or installed in a lighting device, the discharge lamp may be damaged or malfunctioned. In addition, even if the discharge lamp does not become damaged or malfunctioned, if the discharge lamp is subjected to a slight damage or crack due to impact, it may cause the discharge lamp to break during lighting. Then, when the discharge lamp breaks during its lighting, since the pressure inside the arc tube is extremely high, fragments of the arc tube are violently scattered around the discharge lamp, which is extremely dangerous.

In addition, when the discharge lamp is stored at a very high temperature, since the protective member of the arc tube sticks to the surface of the arc tube, after the protective member is removed from the arc tube, fragments of the protective member adhere to the surface of the arc tube. On the other hand, when the discharge lamp is stored at a very low temperature, water vapor in the air condenses or freezes on the surface of the luminous tube, so tiny water droplets adhere to the luminous tube. As mentioned above, when the discharge lamp is turned on with fragments of the protective member or tiny water droplets attached to the surface of the arc tube, the portion of the arc tube where the fragments of the protective member or water droplets adhere becomes locally high temperature, causing discharge. Risk of lamp rupture.

For the reasons described above, it is necessary to manage information such as history information in the discharge lamp, and a discharge lamp has been proposed in which various information related to transportation, storage, etc. are recorded in an IC tag held on the power supply line of the discharge lamp. IC label of the lamp information.

Fig. 7 is an explanatory view showing the configuration of an example of a conventional discharge lamp provided with an IC tag. This discharge lamp 60 has an arc tube 70 in which a sealing portion 72 is formed at both ends of a substantially spherical light emitting portion 71 and a high-pressure gas is sealed inside, and a metal cap 73 is provided on the sealing portion 72 of the arc tube 70 , These are electrically connected to a pair of electrodes (not shown) arranged to face each other in the light emitting unit 71 . The metal cover 73 is composed of a bottomed cylindrical metal cover main body 74 inserted into the sealing portion 72 of the arc tube 70 , and a protruding portion 75 protruding outward from the bottom of the metal cover main body 74 . A power supply line 76 is drawn out, and a power supply terminal 77 constituted by a so-called crimp terminal is provided at the tip of the power supply line 76 . Next, an insulating heat-shrinkable tube 78 is fixed near the power supply terminal 77 of the power supply line 76, an IC tag 80 is housed in the heat-shrinkable tube 78, and a shielding portion 79 is formed around the IC tag 80. Damage to the IC tag 80 during lighting can be prevented, and information can be read and written to the IC tag 80 .

In the discharge lamp 60 as described above, the history information when it is subjected to a large impact during transportation, the history information when it is stored at a very high or low temperature, or the history information when the package box is opened, etc. are transported and stored. Related history information is recorded on the IC tag 80 . Next, the history information and the like recorded on the IC tag 80 are read by the reader/writer 85 provided in the lighting device (not shown), and the read information is referred to determine whether the discharge lamp 60 can be turned on or not.

According to this discharge lamp 60, the unique information of each discharge lamp 60 can be managed during the entire process from the manufacturing stage to the use after the discharge lamp 60 is stored, transported, or turned on. The lamp 60 is always safely lit.

Patent Document 1 Japanese Patent Laid-Open No. 2008-269976

Patent Document 2 Japanese Patent Laid-Open No. 2008-269977

However, the above-mentioned discharge lamp 60 has the following problems.

In order to read information from the IC tag 80 by the reader/writer 85, the IC tag 80 and the reader/writer 85 must be arranged facing each other, and the distance between them is about tens of millimeters. However, when the discharge lamp 60 is mounted on the lighting device in a state where the IC tag 80 is arranged opposite to the reader/writer 85 at a predetermined distance, the heat shrinkable tube 78 for accommodating the IC tag 80 is fixed to the power supply line 76. It is necessary to align the IC tag 80 and the reader 85 by twisting the power supply wire 76. Therefore, as a result of applying an excessive load to the luminous tube 70 of the discharge lamp 60, the luminous tube 70 may be damaged, or the power supply line may be damaged. There is a problem that the discharge lamp 60 is turned on with the twisted state 76 and the power supply line 76 is heated.

Contents of the invention

The present invention is based on the circumstances shown above, and its object is to provide a discharge lamp and a light source device having the discharge lamp. In a discharge lamp having an IC tag on which various information for safely placing the lamp is recorded, no power supply is required. It is possible to attach the IC tag to the lighting device with an excessive load applied to the wire or the luminous tube, and the IC tag is arranged at the desired position.

The discharge lamp of the present invention has: a luminous tube; a pair of electrodes disposed opposite to each other in the luminous tube; a power supply mechanism composed of a power supply line for supplying power to the electrodes and a power supply terminal integrally fixed at the front end of the power supply line ; an IC tag; and a holder made of an insulating material for accommodating the IC tag, wherein the holder is provided on the power supply mechanism so as to be rotatable with its power supply line or power supply terminal as a rotation axis.

In the discharge lamp according to the present invention, it is preferable that the holder is arranged so as to rotatably surround the feeder line at the feeder terminal or in the vicinity of the feeder terminal.

In the discharge lamp as described above, it is preferable that the holder has a cylindrical portion surrounding the power supply terminal or the power supply line, and a convex portion protruding radially outward from the cylindrical portion. Preferably, an IC tag is accommodated in the convex portion.

The light source device of the present invention is composed of the above-mentioned discharge lamp and a lighting device for lighting the discharge lamp. The mounting part is provided with a reader/writer that communicates with the IC tag in a state where the holder is mounted.

The effect of the invention

According to the discharge lamp of the present invention, the holder accommodating the IC tag can be installed on the power supply mechanism so that the power supply wire or the power supply terminal can be rotated as a rotation axis, so when the IC tag is aligned with the reader/writer, the holder is relatively The power supply wire or power supply terminal can be rotated without twisting the power supply wire, so it is possible to avoid excessive load on the luminous tube or power supply wire, and the discharge lamp can be installed with the IC label arranged at the desired position. In the lighting device.

Furthermore, according to the light source device of the present invention, the lighting device is provided with a mounting portion for accommodating the holder of the discharge lamp, and the mounting portion is provided with a reader/writer. Therefore, by mounting the holder on the mounting portion of the lighting device, the The alignment of the IC tag relative to the reader, so the alignment of the IC tag relative to the reader is extremely easy.

Description of drawings

Fig. 1 is an explanatory diagram showing a schematic configuration of main parts of an example of a light source device having a discharge lamp of the present invention.

Fig. 2 is an enlarged explanatory cross-sectional view showing a power feeding mechanism and a holder in the discharge lamp shown in Fig. 1 .

It is explanatory drawing which shows the holder member which comprises a holder, (a) is a side view, (b) is a front view.

4 is an explanatory cross-sectional view showing a mounting portion of a holder in the lighting device.

5 is an explanatory cross-sectional view showing a state where the holder is attached to the attachment portion of the lighting device.

It is explanatory drawing which shows the modification of a power supply mechanism and a holder together with the attachment part of a lighting device, (a) is a side view, (b) is a top cross-sectional view.

Fig. 7 is an explanatory diagram showing the configuration of an example of a conventional discharge lamp having an IC tag.

Detailed ways

Embodiments of the present invention will be described in detail below.

Fig. 1 is an explanatory diagram showing a schematic configuration of main parts of an example of a light source device having a discharge lamp of the present invention.

The discharge lamp 10 in this light source device has a quartz glass arc tube 11 in which sealed tube portions 13 are formed at both ends of a substantially spherical light emitting portion 12, and a pair of electrodes ( (not shown) are disposed along the tube axis direction facing each other. In addition, rare gases such as mercury and xenon gas are sealed in the light emitting portion 12 of the light emitting tube 11 .

Cylindrical metal caps 14 are respectively provided on the sealing tube portions 13 of the arc tubes 11 . In addition, in the discharge lamp 10 of this example, one of the arc tubes 11 is sealed with the tube portion 13 , and the condensing reflector 16 having an ellipsoidal surface is provided so as to surround the light emitting portion 12 .

The side of the metal cover 14 is provided with a power supply line 21 for supplying power to the electrodes. At the front end of the power supply line 21, as shown in Figure 2, a cylindrical power supply terminal 22 made of metal is integrally fixed. 21 and the power supply terminal 22 constitute the power supply mechanism 20 . The power supply terminal 22 has a partition wall 23 formed at the center of the tube hole, and through the partition wall 23, one tube hole 24 in which the power supply line 21 is installed and the other tube hole into which the connection terminal of the lighting device can be inserted are formed. Section 25. In the illustrated example, the front end portion of the power supply line 21 is inserted into one of the cylindrical holes 24 of the power supply terminal 22 and crimped, whereby the power supply terminal 22 is fixed to the front end portion of the power supply line 21 . In addition, a groove portion 26 is formed along the circumferential direction of the power supply terminal 22 at the center of the outer peripheral surface of the power supply terminal 22 .

A holder 30 is disposed on the power supply terminal 22 so as to be rotatable surrounding the power supply terminal 22 as a rotation axis. Specifically, the holder 30 has a cylindrical portion 31 having an inner diameter larger than the outer diameter of the power supply terminal 22 and surrounding the outer circumference of the power supply terminal 22, and at the center of the inner peripheral surface of the cylindrical portion 31, along the cylindrical portion The circumferential direction of 31 forms a protrusion 32 that fits in the groove 26 of the power supply terminal 22 , and the protrusion 32 is arranged to surround the power supply terminal 22 in a state where the protrusion 32 is located in the groove 26 of the power supply terminal 22 .

In addition, in the holder 30, a convex portion 35 protruding radially outward from the cylindrical portion 31 is formed along the axial direction of the cylindrical portion 31, and a housing space 36 is formed inside the convex portion 35. The IC tag 40 is accommodated in this accommodation space 36 .

The holder 30 of the illustrated example is actually formed by stacking mutually symmetrical holder members 30A and 30B as shown in FIG. 3 . Specifically, the holder members 30A, 30B are composed of groove-shaped portions 31A, 31B for forming the cylindrical portion 31 and convex piece portions 35A, 35B for forming the convex portion 35, respectively. The inner surfaces of each of the 31B are formed with protruding strips 32A, 32B for forming the protruding strips 32, and recesses 36A, 36A, 36B. Next, the holder members 30A, 30B are superimposed on each other in a state where the power supply terminal 22 is disposed between the groove portions 31A, 31B, and the screw holes 37A, 37A, and 37B is inserted and fixed with a screw, whereby the holder 30 is arranged so that the cylindrical portion 31 can rotatably surround the power supply terminal 22 as a rotation axis.

As a material of the holder 30 , metal oxides such as alumina having high insulating properties, or resin materials such as polybutylene terephthalate resin are preferably used.

The holder 30 is formed of the material as described above, and a large current is supplied to the power supply line 21 by the lighting device, so that when noise occurs around the power supply line 21, the noise is also shielded by the holder 30, so that it can be prevented. The IC tag 40 malfunctions.

Lamp information, transport and storage information, lighting history information, and the like of the discharge lamp 10 are recorded on the IC tag 40 accommodated in the housing space 36 of the convex portion 35 of the holder 30 .

Here, the lamp information includes, for example, a lamp model number, a factory serial number, a rated lamp voltage, a rated lamp current, and a rated power.

The transportation and storage information includes, for example, shipping place, transportation time, transportation method, storage temperature history, impact information on the lamp, and the like.

As the lighting history information, there are, for example, accumulated lighting time, the number of times of lighting, a lighting device number, and the like.

In the discharge lamp 10 described above, the metal cover 14 is mounted on the fixing plate 50 in the lighting device of the light source device, and the holder 30 is mounted on the mounting portion 51 provided on the fixing plate 50 . In addition, the lighting device is provided with a reader/writer 55 that communicates with the IC tag 40 and reads and writes information here, and the holder 30 is mounted on the mounting portion 51 so that the IC tag 40 and the reader/writer 55 are opposed to each other. way to configure.

Specifically, as shown in FIG. 4 , the mounting portion 51 has a bottomed cylindrical shape provided with a cylindrical hole 51H adapted to the shape of the end surface of the holder 30 , and at the bottom of the mounting portion 51 , along the axial direction of the mounting portion 51 A connection terminal 52 having a front end portion 53 fitted in the other cylindrical hole portion 25 of the power supply terminal 22 is arranged. In addition, a reader/writer 55 is provided at a position facing the IC tag 40 in the state where the holder 30 is mounted on the outer peripheral surface of the mounting portion 51 .

Next, as shown in FIG. 5 , the holder 30 is accommodated in the mounting portion 51 and mounted, whereby the IC tag 40 is disposed in a manner facing the reader/writer 55 , and the IC tag 40 is placed on the other side of the tube hole portion of the power supply terminal 22 . 25 is inserted into the connection terminal 52, thereby achieving electrical connection between the discharge lamp 10 and the lighting device.

According to the above-mentioned discharge lamp 10, the holder 30 accommodating the IC tag 40 is rotatably provided on the power supply terminal 22 in the power supply mechanism 20 around the power supply terminal 22 as a rotation axis, so when the IC tag 40 is inserted into the reader/writer 55, When aligning, it is enough to rotate the holder 30 relative to the power supply terminal 22 without twisting the power supply wire 21, so it can avoid applying excessive load to the light emitting tube 11 or the power supply wire 21, and at the same time, the IC tag 40 can be arranged on the The discharge lamp 10 is attached to the lighting device in a desired position.

Furthermore, according to the light source device described above, the lighting device is provided with the mounting portion 51 for accommodating the holder 30 of the discharge lamp 10, and the mounting portion 51 is provided with the reader/writer 55. Therefore, by mounting the holder 30 on the lighting device, 51, to achieve the alignment of the IC tag 40 relative to the reader-writer 55, so the alignment of the IC tag 40 relative to the reader-writer 55 is extremely easy.

As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, Various changes can be added.

6 is an explanatory diagram showing a modified example of a power feeding mechanism and a holder together with a mounting portion of a lighting device, (a) being a side view and (b) being a plan sectional view.

The power supply mechanism 20 of this example is constituted by a so-called crimp terminal in which a through hole 21H is formed in the center of a metal disk-shaped center of a power supply terminal 22 integrally fixed to the front end of a power supply line 21 . A holder 30 is disposed around the power supply terminal 22 of the power supply line 21 so as to be rotatable around the power supply line 21 as a rotation axis. Specifically, the holder 30 has a cylindrical portion 31 with an inner diameter larger than the outer diameter of the power supply line 21 and surrounding the outer circumference of the power supply line 21 , and forms a radial direction from the cylindrical portion 31 along the axial direction of the cylindrical portion 31 . The convex portion 35 protruding outward has a storage space 36 formed inside the convex portion 35 , and the IC tag 40 is stored in the storage space 36 .

The mounting part 51 in the lighting device has a cylindrical mounting part main body 56 having a cylindrical hole 56H adapted to the shape of the end surface of the holder 30, and a plate-shaped terminal holding part for fixing and holding the power supply terminal 22 is provided at the front end of the mounting part main body 56. 57. In addition, on the outer peripheral surface of the mounting part main body 56 , the reader/writer 55 is provided at a position facing the IC tag 40 in a state where the holder 30 is mounted.

Next, the holder 30 is accommodated in the mounting part main body 56 and mounted, thereby placing the IC tag 40 in a manner facing the reader/writer 55, and the power supply terminal 22 is arranged on the terminal holding part 57 and fixed with screws 58. .

According to the structure shown above, the holder 30 that accommodates the IC tag 40 can be set on the power supply line 21 of the power supply mechanism 20 so that the power supply line 21 can be rotated as a rotation axis, so when the IC tag 40 is aligned with the reader/writer, When in position, it is sufficient to rotate the holder 30 relative to the power supply wire 21 without twisting the power supply wire 21, so it is possible to avoid applying excessive load to the luminous tube or power supply wire of the discharge lamp, and at the same time, the IC tag 40 can be arranged on the Install the discharge lamp on the lighting device in the desired position.

In addition, since the mounting part 51 for accommodating the holder 30 of the discharge lamp 10 is provided on the lighting device, and the reader/writer 55 is provided on the mounting part 51, by mounting the holder 30 on the mounting part 51 of the lighting device, IC The position alignment of the tag 40 relative to the reader-writer 55 is therefore extremely easy to perform the position alignment of the IC tag 40 relative to the reader-writer 55 .

Claims (5)

1. A discharge lamp comprising: a luminous tube; a pair of electrodes arranged opposite to each other in the luminous tube; a power supply composed of a power supply line for supplying power to the electrodes and a power supply terminal integrally fixed at the front end of the power supply line; A mechanism; an IC tag; and a holder made of an insulating material for accommodating the IC tag, characterized in that: The holder is provided on the power supply mechanism so as to be rotatable around a power supply line or a power supply terminal of the power supply mechanism as a rotation axis. 2. The discharge lamp according to claim 1, wherein the holder is arranged so as to rotatably surround the power supply line at the power supply terminal or in the vicinity of the power supply terminal. 3. The discharge lamp according to claim 2, wherein the holder has a cylindrical portion surrounding the power supply terminal or the power supply line, and a convex portion protruding radially outward from the cylindrical portion. 4. The discharge lamp according to claim 3, wherein an IC tag is accommodated in the convex portion. 5. A light source device, characterized in that it is composed of the discharge lamp according to claim 3 or 4, and a lighting device for lighting the discharge lamp, The lighting device has a mounting portion for accommodating the holder of the discharge lamp and adapted to an end surface shape of the holder, and a reader/writer for communicating with the IC tag while the holder is mounted is provided on the mounting portion.