JP2009043697A - Light source device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress volume of sound from a light source device at the beginning of ac lighting. <P>SOLUTION: In this light source device including an ac high-pressure mercury lamp composed of an almost spherical light-emitting part in which a pair of electrodes are disposed face to face and mercury of 0.15 mg/mm<SP>3</SP>or more and halogen within a range of 10<SP>-6</SP>to 10<SP>-2</SP>μmol/mm<SP>3</SP>are enclosed, cylindrical sealed portions extending from both ends of the light-emitting part, and external leads which protrude from the ends of the sealed portions and in which an ac is input, a reflecting mirror having a concave reflecting part disposed so as to surround the light-emitting part and a cylindrical neck part, a connected cylindrical base member, an adhesive filled between the base member and the sealed portions to fix them, and an electric supply line connected to the external leads, when the length filled with the adhesive in the extending direction of the sealed portions is expressed by L1(mm), and the diameter of the sealed position is expressed by R(mm), L1/R≥0.5 is satisfied. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a light source device for use in a projector. In particular, the present invention relates to a light source device in which the light source is AC-lit.

  Examples of the projector device include a liquid crystal projector device and a DLP (trademark of Texas Instruments) projector device. A high-pressure mercury lamp is used as a projection light source used in these projector apparatuses. A combination of a high-pressure mercury lamp and a reflecting mirror is a light source device, and this light source device is used by being incorporated in a projector device.

FIG. 17 is a cross-sectional view taken along a pair of opposed electrodes 521 and 522 of the high-pressure mercury lamp 5 for explaining the conventional light source device 1 described in Patent Document 1.
The light source device 1 includes a reflecting mirror 2 having a concave reflecting surface 211 and a high-pressure mercury lamp 5 arranged so that the center between the electrodes 521 and 522 coincides with the first focal point of the reflecting surface 211.
The reflecting mirror 2 includes a reflecting portion 21 having a reflecting surface 211 and a cylindrical neck portion 22. The reflection portion 21 is provided with a through hole 23 for leading out the other power supply line 552 described later. The cylindrical base member 3 is in contact with the end portion of the neck portion 22 of the reflecting mirror 2, and the insertion port 31 of the base member 3 is arranged to be continuous with the insertion port 24 of the neck portion 22. The reflecting mirror 2 and the base member 3 are connected by an adhesive 62 or the like.
The light emitting plate 4 is disposed in the opening for emitting the reflected light from the reflecting surface 211 of the reflecting mirror 2.

The high pressure mercury lamp 5 includes a discharge tube 51 including a substantially spherical light emitting portion 511 and sealing portions 512 and 513 extending from both ends thereof, electrodes 521 and 522 sealed in the light emitting portion 511, and sealing portions 512 and 513. The external leads 541 and 542 projecting from the electrodes, the electrodes 521 and 522, and the external leads 541 and 542 are electrically connected and the foil 53 is embedded in the sealing portions 512 and 513.
Inside the arc tube 511, it arrange | positions so that the front-end | tip of a pair of electrodes 521 and 522 may oppose, and mercury is enclosed as a luminescent metal.
One sealing portion 512 of the high-pressure mercury lamp 5 is inserted into the continuous insertion openings 24 and 31 of the reflecting mirror 2 and the base member 3, and the adhesive 61 is filled and bonded between the base member 3. Thereby, the high-pressure mercury lamp 5 is fixed to the reflecting mirror 2, and the other sealing portion 513 is arranged so as to extend toward the light emitting plate 4. The other external lead 542 protrudes from the other sealing portion 513, and the other power supply line 552 connected to the other external lead 542 passes through the through-hole 23 of the reflective portion 21 to the outside of the reflective mirror 2. Derived.

JP 2007-066742 A

  In a light source device equipped with an AC lighting type high pressure mercury lamp, there has been a problem that sound is generated during use. In particular, sound from the light source device leaks to the outside of the projector within a few minutes after the start of projector operation, and is heard as an unpleasant sound by the projector user, which hinders the use of the projector.

  Therefore, an object of the present application is to suppress the volume of sound from the light source device in the initial stage of AC lighting.

In the light source device according to the first aspect of the present invention, a pair of electrodes are opposed to each other, and 0.15 mg / mm ³ or more of mercury and a halogen in the range of 10 ⁻⁶ μmol / mm ³ to 10 ⁻² μmol / mm ³ AC lighting-type high voltage comprising a substantially spherical light emitting part in which is enclosed, a cylindrical sealing part extending from both ends of the light emitting part, and an external lead protruding from the end of the sealing part and receiving an alternating current A mercury lamp, a reflecting mirror composed of a concave reflecting portion and a cylindrical neck disposed so as to surround the light emitting portion, a cylindrical base member connected to the cylindrical neck, and the base member In a light source device comprising an adhesive filled between the sealing portion and fixing them, and a power supply line connected to the external lead, the adhesive in the extending direction of the sealing portion is filled The length is L1 (mm) and the sealing If the diameter of the part was R (mm), characterized in that it is a L1 / R ≧ 0.5.

In the light source device according to the second invention, a pair of electrodes are opposed to each other, and 0.15 mg / mm ³ or more of mercury and halogen in the range of 10 ⁻⁶ μmol / mm ³ to 10 ⁻² μmol / mm ³ AC lighting-type high voltage comprising a substantially spherical light emitting part in which is enclosed, a cylindrical sealing part extending from both ends of the light emitting part, and an external lead protruding from the end of the sealing part and receiving an alternating current A mercury lamp, a reflecting mirror composed of a concave reflecting portion and a cylindrical neck portion arranged so as to surround the light emitting portion, and an adhesive filled between the neck portion and the sealing portion to fix them. In a light source device comprising an agent and a power supply line connected to the external lead, the length filled with the adhesive in the extending direction of the sealing portion is L1 (mm), and the diameter of the sealing portion is In the case of R (mm), L1 / R ≧ 0. And characterized in that.

  A light source device according to a third invention is the light source device according to the first or second invention, wherein a through hole is provided in the reflecting portion of the reflecting mirror, the feeding line is led out from the through hole, and the through hole is formed in the through hole. It is characterized by being filled with an adhesive.

  A light source device according to a fourth invention is the light source device according to the first or second invention, wherein a through hole is provided in the reflecting portion of the reflecting mirror, the feeding line is led out from the through hole, and the through hole A flexible tube is interposed between the feeder line and the feeder line.

  A light source device according to a fifth invention is characterized in that, in the light source device according to the fourth invention, a metal tube is provided between the through hole and the flexible tube.

  The light source device which concerns on 1st invention can suppress the volume from the light source device of an alternating current lighting initial stage by the said characteristic.

  The light source device according to the second aspect of the present invention can suppress the sound volume from the light source device in the initial stage of AC lighting due to the above characteristics.

  The light source device according to the third aspect of the present invention can prevent the generation of sound due to the sliding contact between the power supply line and the reflecting mirror during AC lighting due to the above characteristics.

  The light source device according to the fourth aspect of the present invention can prevent the generation of sound due to the sliding contact between the power supply line and the reflecting mirror during AC lighting due to the above characteristics.

  The light source device according to the fifth aspect of the present invention can prevent the generation of sound due to the sliding contact between the power supply line and the reflecting mirror during AC lighting due to the above characteristics. Furthermore, it is possible to prevent the generation of sound due to the sliding contact between the feeder line and the metal pipe.

  A first embodiment of a light source device 1 according to the present invention will be described with reference to FIG.

  FIG. 1 is an explanatory diagram of a light source device 1 according to the present invention. 1A is a cross-sectional view taken along a pair of electrodes 521 and 522 of the high-pressure mercury lamp 5, and FIG. 1B is a cross-sectional view perpendicular to the central axis direction of one sealing portion 512 of FIG. It is (AA sectional drawing). In FIG. 1, the same components as those shown in FIG.

  The light source device 1 according to the present invention includes a reflecting mirror 2 having a concave reflecting surface 211 and a high-pressure mercury lamp 5 disposed so that the light emitting unit 511 is surrounded by the concave reflecting surface 211.

The reflecting mirror 2 includes a reflecting portion 21 having a concave reflecting surface 211 and a cylindrical neck portion 22, and is formed of a heat-resistant glass material such as borosilicate glass or a metal material such as aluminum or copper. Is done. The reflecting mirror 2 is formed in a funnel shape by cutting out from a metal material so that the reflecting portion 21 and the neck portion 22 are integrated. The reflecting mirror 2 is provided with an insertion port 24 into which the high-pressure mercury lamp 5 is inserted so as to penetrate the reflecting portion 21 from the cylindrical neck portion 22.
In the reflecting mirror 2, the reflecting portion 21 and the neck portion 22 may be separate, and may be physically integrated by welding or the like.

The concave reflecting surface 211 of the reflecting portion 21 is formed with a dielectric multilayer film formed by laminating a metal vapor deposition film such as aluminum or rhodium, or silica (SiO ₂ ) and titania (TiO ₂ ).
When the reflecting mirror 2 is formed of a metal material that can reflect desired light and has a reflecting surface 211 made of metallic luster, a metal vapor deposition film or a dielectric multilayer film may not be provided.
The reflecting portion 21 is provided with a through hole 23 for leading the other feeder line 552 of the high-pressure mercury lamp 5 to be described later from the concave reflecting surface 211 to the outside.
When the reflecting mirror 2 is formed of a metal material, the through hole 23 of the reflecting portion 21 is provided with an insulating tube (not shown) made of alumina (Al ₂ O ₃ ), for example. Thereby, it can prevent that the reflective mirror 2 and the other electric power feeding terminal 552 conduct | electrically_connect.

The cylindrical base member 3 is disposed at the end of the neck 22 of the reflecting mirror so that the insertion port 31 of the cylindrical base member 3 and the insertion port 24 of the reflecting mirror 2 are continuous. The cylindrical base member 3 is formed of a heat-resistant material such as a ceramic material, and is connected to the reflecting mirror 2 by an adhesive 61 or the like.
One sealing portion 512 of a high-pressure mercury lamp 5 described later is disposed in the insertion port 31 of the cylindrical base member 3, and an adhesive 61 having heat resistance is provided between the one sealing portion 512 and the base member 3. For example, an inorganic adhesive is filled.

The high-pressure mercury lamp 5 includes a discharge tube 51 composed of a substantially spherical light emitting part 511 and cylindrical sealing parts 512 and 513 extending at both ends thereof, and a pair of electrodes 521 and 522 arranged opposite to each other inside the light emitting part 511. Embedded in the light emitting portion 511, 0.15 mg / mm ³ or more of mercury enclosed in the light emitting portion 511, external leads 541 and 542 protruding from the end portions of the sealing portions 512 and 513, and the sealing portions 512 and 513. Foil 53.

The discharge tube 51 is made of, for example, quartz glass. Inside the light emitting portion 511 of the discharge tube 51, for example, bromine and a rare gas as a halogen gas in the range of 10 ⁻⁶ μmol / mm ³ to 10 ⁻² μmol / mm ³ together with 0.15 mg / mm ³ or more of mercury. For example, argon gas of 13 KPa is enclosed. Inside the light emitting unit 511, a pair of electrodes 521 and 522 made of, for example, tungsten are arranged so that the distance between both ends is opposed to 2 mm or less.
The sealing portions 512 and 513 of the discharge tube 51 are formed in a cylindrical shape by heating and melting the inside of a quartz glass pipe body extending from both ends of the light emitting portion 511 in a reduced pressure state, that is, by a shrink seal method. It is formed. Inside the sealing portions 512 and 513, a metal foil 53 made of, for example, molybdenum is provided so that the electrodes and the external leads 541 and 542 protruding from the end portions of the sealing portions 512 and 513 are electrically connected. Buried.

One sealing portion 512 of the high-pressure mercury lamp 5 is disposed in the insertion port 31 of the base member 3, and as shown in FIG. 1B, the radial outer periphery and the cylindrical shape of the cylindrical sealing portions 512 and 513. The adhesive 61 is filled between the inner periphery of the base member 3. Thereby, the high-pressure mercury lamp 5 is fixed to the base member 3 and is fixed to the reflecting mirror 2 via the base member 3. The high-pressure mercury lamp 5 fixed to the reflecting mirror 2 is arranged so that the other sealing portion 513 extends toward the light output plate 4 described later.
As the adhesive 61, for example, an inorganic adhesive having heat resistance is preferably used.
The other power supply line 552 connected to the other external lead 542 protruding from the other sealing portion 513 of the high-pressure mercury lamp 5 passes through the through hole 23 of the reflecting mirror 2 and has a concave reflecting surface 211 of the reflecting mirror 2. Is derived from
Feed lines 551 and 552 connected to the high-pressure mercury lamp 5 are connected to a power source (not shown).

The concave reflecting surface 211 of the reflecting mirror 2 has, for example, a surface shape in which a rotation ellipse is halved at the minor axis portion, and the center between the electrodes 521 and 522 of the high-pressure mercury lamp 5 at the first focal point close to the neck portion 22. Are arranged to match. The reflecting portion 21 of the reflecting mirror 2 has an opening in the direction toward the second focus with respect to the first focus, and the disk-shaped light emitting plate 4 that emits desired light of the light source device 1 is the opening of the reflecting portion 21. Arranged to cover.
The concave reflecting surface 211 of the reflecting mirror 2 may be a parabolic shape. When the reflecting surface 211 is in a parabolic shape, the center between the electrodes 521 and 522 of the high-pressure mercury lamp 5 is arranged to coincide with the focal point of the rotating parabolic reflecting surface 211.

The light emitting plate 4 is made of, for example, borosilicate glass. The light emitting plate 4 functions as explosion-proof when the high-pressure mercury lamp 5 that has become high pressure due to mercury evaporated when the lamp 5 is lit breaks.
When the projector (not shown) using the light source device 1 has an explosion-proof function, the light emitting plate 4 may not be provided.

  As shown in FIG. 1A, in the direction (center axis direction) in which the sealing portions 512 and 513 extend, between the outer periphery of one sealing portion 512 of the high-pressure mercury lamp 5 and the inner periphery of the base member 3. The length of the filled adhesive 61 is L1. Further, as shown in FIG. 1B, the diameter of one sealing portion 512 of the high-pressure mercury lamp 5 is R. The light source device 1 according to the present embodiment has L1 / R ≧ 0.5.

In the initial stage of lighting of the lamp 5, a direct current is inputted to the external leads 541 and 542 of the high-pressure mercury lamp 5 from a power source (not shown) for 5 seconds, and discharge occurs between the electrodes 521 and 522. An AC current is input after the DC current is input, and the discharge between the electrodes 521 and 522 is continued. Light is emitted from the light emitting portion 511 of the high-pressure mercury lamp 5 due to the discharge between the electrodes 521 and 522, and a part thereof is directed to the light emitting plate 4. The light that does not go to the light output plate 4 is directed to the reflection surface 211, reflected by the reflection surface 211, and directed to the light output plate 4. As a result, the light from the high-pressure mercury lamp 5 is irradiated through the light emitting plate 4.
For example, one electrode 521 is the starting point of discharge when a direct current is input, whereas one electrode 521 and the other electrode 522 are alternately the starting points of discharge when an alternating current is input. As a result, it is considered that when the alternating current is input, the temperature of the pair of electrodes 521 and 522 is repeatedly increased and decreased to cause a pressure fluctuation and the high-pressure mercury lamp 5 vibrates. In particular, in the light emitting portion 511 at the initial stage of alternating current lighting, since mercury is completely evaporated, the pressure fluctuation is large. For this reason, it is considered that the vibration of the high-pressure mercury lamp 5 in the initial stage of AC lighting is particularly large. An oscillating high-pressure mercury lamp 5 is fixed via an adhesive 61 to a reflecting mirror 2 fixed to a projector (not shown). For this reason, it is considered that the sound at the time of AC lighting is generated from the vicinity of the adhesive 61. In the light source device 1 according to the present embodiment, the relationship between the diameter R of one sealing portion 551 of the high-pressure mercury lamp 5 and the length L1 of the adhesive 61 disposed on the outer periphery thereof is L1 / R ≧ 0.5. As a result, as shown in an experiment described later, it is possible to suppress the sound volume due to vibration of the light source device 1 in the initial stage of AC lighting.

In the light source device 1 according to the present embodiment, a pair of electrodes 521 and 522 are disposed to face each other, and 0.15 mg / mm ³ or more mercury and 10 ⁻⁶ μmol / mm ³ to 10 ⁻² μmol / mm ³ . A substantially spherical light emitting part 511 encapsulated with halogen in a range, cylindrical sealing parts 512 and 513 extending from both ends of the light emitting part 511, and protruding from the ends of the sealing parts 512 and 513 and an alternating current is input AC lighting type high-pressure mercury lamp 5 composed of external leads 541 and 542, a reflecting mirror 2 composed of a concave reflecting portion 21 and a tubular neck portion 22 disposed so as to surround the light emitting portion 511, a cylindrical shape A cylindrical base member 3 connected to the neck portion 22, an adhesive 61 filling and fixing between the base member 3 and the sealing portions 512 and 513, and external leads 541 and 542 are connected. Power supply In the light source device 1 composed of 551 and 552, the length in which the adhesive 61 is filled in the extending direction of the sealing portions 512 and 513 is L1 (mm), and the diameter of the sealing portion 61 is R (mm). In this case, the volume of the light source device 1 in the initial stage of alternating current lighting can be suppressed by setting L1 / R ≧ 0.5.

The human audible range is generally said to be between 20 Hz and 20 KHz. The projector (not shown) in which the light source device 1 according to the present embodiment is used is equipped with various devices such as a cooling fan. When a projector (not shown) is in operation, these devices emit an operating sound. At this time, since the operation sound of a device other than the light source device 1 has a loud volume with a frequency other than 8 KHz to 12 KHz, the light source device 1 has a high sound volume with a frequency of 8 KHz to 12 KHz when the lamp 5 is turned on. The operation sound 1 may be recognized by a projector user (not shown). The recognized sound having a frequency of 8 KHz to 12 KHz was a harsh sound for humans as shown in an experimental example described later.
For this reason, in the extending direction (center axis direction) of the sealing portions 512 and 513, the adhesion filled between the outer periphery of one sealing portion 512 and the inner periphery of the base member 4 from the center between the electrodes 521 and 522. By setting the distance to the light emitting portion 511 side end surface 611 of the agent 61 to L2 and L2 ≦ 16 mm or L2 ≧ 20 mm, the peak frequency when the lamp 5 of the light source device 1 is turned on is 12 KHz as shown in the experimental example described later It can be above or below 8 KHz. Thereby, the operation sound of the light source device 1 can be set to a frequency that is not harsh to the user of the projector (not shown). Furthermore, since the operating sound of the light source device 1 has the same frequency as the operating sound of other devices, it can be prevented from being recognized by a projector user (not shown).
In particular, in the direction of the pair of electrodes 521 and 522, the peak frequency can be set to 20 KHz or more by setting the distance L2 from the center between the electrodes 521 and 522 to the adhesive 61 to L2 ≦ 14 mm. Since the frequency 20 KHz is outside the human audible range, the sound can be made unrecognizable by a user of a projector (not shown).

Another embodiment of the first embodiment of the light source device 1 according to the present invention will be described with reference to FIG.
FIG. 2 is an explanatory diagram of the light source device 1 according to the present invention. 2A is a sectional view taken along a pair of electrodes 521 and 522 of the high-pressure mercury lamp 5, and FIG. 2B is a sectional view perpendicular to the central axis direction of one sealing portion 512 of FIG. It is a figure (BB sectional drawing). In FIG. 2, the same components as those shown in FIG. 1 are denoted by the same reference numerals.

  The light source device 1 shown in FIG. 2 is different from FIG. 1 in that the light emitting plate 4 is not provided and the through hole 23 is not provided in the reflecting portion 21. As an explanation of FIG. 2, differences from FIG. 1 will be described.

  By fixing one sealing portion 512 of the high-pressure mercury lamp 5 to the base member 3, the other sealing portion 513 is arranged to extend toward the opening of the reflecting portion 21. The other power supply line 552 is electrically connected to the other external lead 542 protruding from the other sealing portion 513. The other feed line 552 is led out from the opening of the reflecting portion 21. The other feed line 552 led out of the reflector 21 is connected to a power source (not shown).

  Also in the light source device 1 according to the present embodiment, the diameter R of one sealing portion 512 of the high-pressure mercury lamp 5 and the length L1 of the adhesive 61 disposed on the outer periphery thereof, as in the light source device 1 of FIG. When L1 / R ≧ 0.5, the same effect as the light source device 1 of FIG. 1 can be obtained.

Further, an adhesive filled between the outer periphery of one sealing portion 512 and the inner periphery of the base member 4 from the center between the electrodes 521 and 522 in the extending direction (center axis direction) of the sealing portions 512 and 513. In the light source device 1 according to the present embodiment in which the distance L2 to the light emitting portion 511 side end surface 611 of L61 is set to L2 ≦ 16 mm or L2 ≧ 20 mm, the same effect as the light source device 1 of FIG. 1 can be obtained.
Further, in the direction of the pair of electrodes 521 and 522, from the center between the electrodes 521 and 522 to the light emitting portion 511 side end surface 611 of the adhesive 61 filled between the outer periphery of one sealing portion 512 and the base member 4. Also in the light source device 1 according to the present embodiment in which the distance L2 is set to L2 ≦ 14 mm, the same effect as that of the light source device 1 in FIG. 1 can be obtained.

A second embodiment of the light source device 1 according to the present invention will be described with reference to FIG.
FIG. 3 is an explanatory diagram of the light source device 1 according to the present invention. 3A is a cross-sectional view taken along a pair of electrodes 521 and 522 of the high-pressure mercury lamp 5, and FIG. 3B is a cross-section perpendicular to the central axis direction of one sealing portion 512 in FIG. It is a figure (CC sectional drawing). 3, the same components as those shown in FIG. 1 are denoted by the same reference numerals.

  The light source device 1 shown in FIG. 3 is different from FIG. 1 in that the cylindrical base member 3 is not provided and that one sealing portion 512 of the high-pressure mercury lamp 5 is fixed to the neck portion 22 of the reflecting mirror 2. . As an explanation of FIG. 3, differences from FIG. 1 will be described.

  One sealing portion 512 of the high-pressure mercury lamp 5 is inserted into the insertion port 24 of the reflecting mirror 2 and is disposed inside the cylindrical neck portion 22 of the reflecting mirror 2. The high-pressure mercury lamp 5 is fixed to the reflecting mirror 2 by filling an adhesive 61 between the outer periphery of one cylindrical sealing portion 512 and the inner periphery of the neck portion 22 of the reflecting mirror 2.

In the light source device 1 according to the present embodiment, the outer periphery of one sealing portion 512 of the high-pressure mercury lamp 5 and the inner periphery of the cylindrical neck portion 22 in the extending direction (center axis direction) of the sealing portions 512 and 513. Let L1 be the length of the adhesive filled in between.
Further, in the extending direction (center axis direction) of the sealing portions 512 and 513, filling is performed between the outer periphery of one sealing portion 512 and the inner periphery of the neck portion 21 of the reflecting mirror 2 from the center between the electrodes 521 and 522. The distance from the adhesive 61 to the light emitting portion 511 side end surface 611 is L2.

In the light source device 1 according to the present embodiment, a pair of electrodes 521 and 522 are disposed to face each other, and 0.15 mg / mm ³ or more mercury and 10 ⁻⁶ μmol / mm ³ to 10 ⁻² μmol / mm ³ . A substantially spherical light-emitting portion 511 encapsulated with halogen in a range, cylindrical sealing portions 512 and 513 extending from both ends of the light-emitting portion 511, and protruding from the end portions of the sealing portions 512 and 513, and an alternating current is input AC lighting type high-pressure mercury lamp 5 composed of external leads 541, 542, reflecting mirror 2 composed of a concave reflecting portion 21 and a cylindrical neck portion 22 arranged so as to surround the light emitting portion 511, In the light source device 1 including the adhesive 61 filled between the sealing portions 512 and 513 and fixing them, and the power supply lines 551 and 552 connected to the external leads 541 and 542, the sealing portion 5 When the length of the adhesive 61 in the extending direction of 2,513 is L1 (mm) and the diameter of the sealing portions 512, 513 is R (mm), L1 / R ≧ 0.5 The volume from the light source device 1 in the initial stage of AC lighting can be suppressed.

Further, in the extending direction (center axis direction) of the sealing portions 512 and 513, filling is performed between the outer periphery of one sealing portion 512 and the inner periphery of the neck portion 21 of the reflecting mirror 2 from the center between the electrodes 521 and 522. In the light source device 1 according to the present embodiment in which the distance L2 of the adhesive 61 to the light emitting portion 511 side end surface 611 is set to L2 ≦ 16 mm or L2 ≧ 20 mm, the same effect as the light source device 1 of FIG. 1 can be obtained. it can.
Further, in the extending direction (center axis direction) of the sealing portions 512 and 513, filling is performed between the outer periphery of one sealing portion 512 and the inner periphery of the neck portion 21 of the reflecting mirror 2 from the center between the electrodes 521 and 522. In the light source device 1 according to the present embodiment in which the distance L2 of the adhesive 61 to the light emitting portion 511 side end surface 611 is set to L2 ≦ 14 mm, the same effect as that of the light source device 1 in FIG. 1 can be obtained.

  In the present embodiment, the same effect as that of the light source device of FIG. 3 can be obtained without providing a through hole in the reflecting portion 21 and further providing a light emitting plate as in the light source device 1 shown in FIG. It is done.

A third embodiment of the light source device 1 according to the present invention will be described with reference to FIG.
FIG. 4 is an explanatory view of the light source device 1 according to the present invention, and is a cross-sectional view taken along a pair of electrodes 521 and 522 of the high-pressure mercury lamp 5. 4, the same components as those shown in FIG. 1 are denoted by the same reference numerals.

  The light source device 1 shown in FIG. 4 is different from FIG. 1 in that the adhesive 63 is filled in the through hole 23. As an explanation of FIG. 4, differences from FIG. 1 will be described.

In the light source device 1 in the present embodiment, one sealing portion 512 of the high-pressure mercury lamp 5 is directly fixed to the reflecting mirror 2, whereas the other sealing portion 513 passes through one sealing portion 512. It is indirectly fixed to the reflecting mirror 2. For this reason, when the high-pressure mercury lamp 5 vibrates during AC lighting, the one sealing portion 512 is directly fixed to the reflecting mirror 2 so that vibration is suppressed and vibration is small. On the other hand, since the other sealing portion 513 is indirectly fixed to the reflecting mirror 2, the vibration is large because the vibration is hardly suppressed. When the vibration of the other sealing portion 513 is large, the other feeder 552 connected to the other external lead 542 protruding from the other sealing portion 513 is vibrated greatly, and the reflecting mirror 2 around the through hole 23 and the other The power supply line 552 may come into sliding contact and generate noise.
For this reason, the other feeder line 552 is directly fixed to the reflecting mirror 2 by filling the through hole 23 with an inorganic adhesive as the heat-resistant adhesive 63. Thereby, it can prevent that the other electric power feeding line 552 is slidably contacted with the reflective mirror 2, and the noise from the light source device 1 can be prevented.

  The light source device 1 according to the present embodiment is characterized in that a through hole 23 is provided in the reflecting portion 21 of the reflecting mirror 2, a power supply line 552 is led out from the through hole 23, and the adhesive 63 is filled in the through hole 23. By doing so, it is possible to prevent the generation of sound due to the sliding contact between the other feeder line 552 and the reflecting mirror 2 during AC lighting.

A fourth embodiment of the light source device 1 according to the present invention will be described with reference to FIG.
FIG. 5 is an explanatory diagram of the light source device 1 according to the present invention, and is a cross-sectional view taken along a pair of electrodes 521 and 522 of the high-pressure mercury lamp 5. In FIG. 5, the same components as those shown in FIG. 1 are denoted by the same reference numerals.

  The light source device 1 shown in FIG. 5 is different from FIG. 1 in that a flexible tube 64 is arranged on the other power supply line 552 so that the reflecting mirror 2 and the other power supply line 552 are not in contact with each other. As an explanation of FIG. 5, differences from FIG. 1 will be described.

A tube 64 that is more flexible than the reflector 21 and the other power supply line 552 is provided on the other power supply line 552 surrounded by the reflecting mirror 2 around the through hole 23. The flexible tube 64 provided on the other power supply line 552 heat-shrinks the heat-shrinkable tube into which the other power supply line 552 is inserted at a position between the through hole 23 and the other power supply line 552. Can be provided. In addition, a flexible tube 64 may be provided by covering the other power supply line 552 by applying and drying an adhesive so as to be interposed between the through hole 23 and the other power supply line 552. it can.
Further, the flexible tube 64 is wound around a position where the film-like member covers the other power supply line 552 at a position between the through hole 23 and the other power supply line 552. It may be formed in a tube shape and provided by fixing both ends thereof with an adhesive or the like.

  By interposing a flexible tube 64 between the through hole 23 and the other power supply line 552, the flexible tube 64 is in contact with the reflecting mirror 2 during AC lighting. Even when the vibration of the other sealing portion 513 of the high-pressure mercury lamp 5 is transmitted to the other power supply line 552 during AC lighting, the tube 64 has flexibility so that the vibration is absorbed and the vibration is suppressed from being transmitted to the reflecting mirror. it can. As the material of the flexible tube 64, a material having heat resistance that can withstand irradiation heat from the high-pressure mercury lamp 5 is suitably used. Specifically, for example, a fluororesin, a silicon resin, a polyimide resin, or an epoxy resin can be used as a flexible tube member.

As shown in FIG. 5, even if there is a gap between the reflecting mirror 2 and the flexible tube 64 and the reflecting mirror 2 and the flexible tube 64 are in sliding contact, the flexible tube 64 is, for example, If the material has a small friction coefficient such as the tube 64 made of fluororesin, the friction between the reflecting mirror 2 and the flexible tube 64 is reduced, and the generation of noise can be further prevented.
The reflector 2 is filled with a flexible tube 64 between the other feed line 552 and the reflecting mirror 2 in the radial direction so that the reflector 2 and the other feed line 552 are not in sliding contact with each other. Even when the flexible tube 64 is in close contact, the vibration of the other sealing portion 552 of the high-pressure mercury lamp 5 can be absorbed by the flexibility of the tube 64.

  In the light source device 1 according to the fourth embodiment, a through hole 23 is provided in the reflecting portion 21 of the reflecting mirror 2, the power supply line 552 is led out from the through hole 23, and flexibility is provided between the through hole 23 and the power supply line 552. It is possible to prevent the feeding line 552 and the reflecting mirror 2 from being slidably contacted at the time of AC lighting.

A fifth embodiment of the light source device 1 according to the present invention will be described with reference to FIG.
FIG. 6 is an explanatory diagram of the light source device 1 according to the present invention. FIG. 6A is a cross-sectional view taken along a pair of electrodes 521 and 522 of the high-pressure mercury lamp 5. 6B is an enlarged view in which the periphery of the through hole 23 of the light source device 1 in FIG. 6A is enlarged (an enlarged view of a portion surrounded by a dotted circle around the through hole 23 in FIG. 6A). ).
In FIG. 6, the same components as those shown in FIG.

  The light source device 1 shown in FIG. 6 is different from FIG. 5 in that a metal terminal 73 is provided on the base member 3 and a flexible tube 64 is provided on the entire length of the other power supply line 522. As an explanation of FIG. 6, differences from FIG. 5 will be described.

Some light source devices 1 achieve electrical connection by caulking the other power supply line 552 and a power supply line 8 extending from a power source (not shown) with a metal terminal 73.
In the light source device 1 according to the fifth embodiment shown in FIG. 6, the metal terminal 73 is fixed to the base member 3 with, for example, an adhesive (not shown). The metal terminal 73 is provided with a hole (not shown) before caulking, and the other power supply line 552 extending from the other external lead 542 of the high-pressure mercury lamp 5 is inserted into the hole so that a power supply (not shown) is connected. An extending feeder line 8 is also inserted. The metal terminal 73 is caulked in a state where the other power supply line 552 extending from the external lead 542 and the power supply line 8 extending from the power source (not shown) are inserted, and as shown in FIG. 6, the other external lead 542 and the power source (not shown) Are electrically connected.

  The other power supply line 552 is inserted into the flexible tube 64, so that the flexible tube 64 is provided over substantially the entire length thereof. The other power supply line 552 covered with the flexible tube 64 is inserted into the metal terminal 73 through the through hole 23 of the reflecting mirror 2. In the other power supply line 552, the portion inserted into the metal terminal 73 is not covered with the flexible tube 64 and is therefore exposed. Therefore, the other power supply line 552 and the power supply line 8 extending from the power source are electrically connected directly or via the metal terminal 73 by caulking the metal terminal 73.

  The flexible tube 64 is provided over the entire length of the other power supply line 552, so that the other power supply line 552 is connected to the other power supply line 552 even if the tube 64 is not fixed to the other power supply line 552. The movement of the external lead 542 and the metal terminal 73 is restricted. For this reason, as shown in FIG. 6B, by providing a tube 64 having flexibility over substantially the entire length extending from the other external lead 542 to the metal terminal 73 in the other feeder 552, the through hole 23 and the other A flexible tube 64 can always be interposed between the feeder line 552 and the feeder line 552.

Moreover, even when the metal terminal 73 is provided on the base member 3 as in the light source device 1 according to the fifth embodiment, as described in the light source device 1 according to the fourth embodiment, the through hole is provided. A flexible tube 64 can be formed by providing a heat-shrinkable tube or an adhesive so as to be interposed between the power supply line 23 and the other power supply line 552.
Furthermore, the flexible tube 64 is wound around a position where the film-like member covers the other power supply line 552 at a position interposed between the through hole 23 and the other power supply line 552. It can also be formed by forming in a tube shape and fixing both ends with an adhesive or the like.

  By interposing a flexible tube 64 between the through hole 23 and the other power supply line 552, the flexible tube 64 is in contact with the reflecting mirror 2 during AC lighting. Even when the vibration of the other sealing portion 513 of the high-pressure mercury lamp 5 is transmitted to the other power supply line 552 during AC lighting, the tube 64 has flexibility so that the vibration is absorbed and the vibration is transmitted to the reflecting mirror 2. Can be suppressed. As the material of the flexible tube 64, a material having heat resistance that can withstand irradiation heat from the high-pressure mercury lamp 5 is suitably used. Specifically, for example, a fluorine resin, a silicon resin, a polyimide resin, or an epoxy resin can be used as a member of the tube 64 having flexibility.

As shown in FIG. 6B, even if there is a gap between the reflecting mirror 2 and the flexible tube 64 so that the reflecting mirror 2 and the flexible tube 64 are in sliding contact, the flexible tube. If 64 is a material having a small friction coefficient, such as a tube 64 made of, for example, a fluororesin, the friction between the reflecting mirror 2 and the flexible tube 64 is reduced, and noise can be further prevented. .
The reflector 2 is filled with a flexible tube 64 between the other feed line 552 and the reflecting mirror 2 in the radial direction so that the reflector 2 and the other feed line 552 are not in sliding contact with each other. Even when the flexible tube 64 is in close contact, the vibration of the other sealing portion 552 of the high-pressure mercury lamp 5 can be absorbed by the flexibility of the tube 64.

  In the light source device 1 according to the fifth embodiment, the through hole 23 is provided in the reflecting portion 21 of the reflecting mirror 2, the power supply line 552 is led out from the through hole 23, and the flexibility is provided between the through hole 23 and the power supply line 552. It is possible to prevent the feeding line 552 and the reflecting mirror 2 from being slidably contacted at the time of AC lighting.

A sixth embodiment of the light source device 1 according to the present invention will be described with reference to FIGS.
7 and 8 are explanatory views of the light source device 1 according to the present invention. FIG. 7 is a cross-sectional view taken along a pair of electrodes 521 and 522 of the high-pressure mercury lamp 5. FIG. 8A is an enlarged view in which the periphery of the through hole 23 of the light source device 1 in FIG. 7 is enlarged (enlarged view of a portion surrounded by a dotted circle around the through hole 23 in FIG. 7). FIG. 8B is an explanatory view of an assembling means for assembling a metal tube 71 with a collar (so-called eyelet) 71 and a metal terminal 73 provided in the through hole 23 of the light source device 1 of FIG. It is an enlarged view of the periphery of the through hole 23 in a state where the so-called eyelet 71 and the metal terminal 73 are disassembled from the through hole 23. In FIG. 8B, the other feeder line 552 is not shown.
7 and 8, the same components as those shown in FIG. 6 are denoted by the same reference numerals.

  The light source device 1 shown in FIGS. 7 and 8 is different from FIG. 6 in that a metal terminal 73 is provided in the through hole 23 of the reflecting mirror 2 using a metal tube 71 with a collar (so-called eyelet) 71. As an explanation of FIGS. 7 and 8, differences from FIG. 6 will be described.

In the light source device 1, when the reflecting mirror 2 is formed of a heat-resistant glass material such as borosilicate glass, the metal terminal 73 is fixed to the reflecting mirror 2 by a flanged metal tube (so-called eyelet) 71 and a washer 72. There is something to be done.
As shown in FIG. 8A, a metal tube 71 with a collar is provided in the through hole 23 of the reflecting mirror 2. The flanged metal tube 71 is provided at one end of the cylindrical tube portion 712 provided in the through-hole 23 of the reflecting mirror 2 and the cylindrical tube portion 712 and has a larger diameter than the outer peripheral diameter of the cylindrical tube portion 712. And a flange portion 711 having an outer peripheral surface. The collared metal tube 71 has a through hole 713 extending to the central axis of the cylindrical portion 642. This collard metal tube 71 is a member commonly called eyelet.
The collar portion 711 of the metal tube 71 with a collar comes into contact with the reflecting surface 211 of the reflecting mirror 2. The other end (the end opposite to the side where the collar portion 711 is provided) of the cylindrical portion 712 of the collared metal tube 71 is inserted into the central hole portion 732 of the ring-shaped fixing portion 731 extending from the metal terminal 73, A hole 721 of the washer 72 is provided. Since the collared metal tube 71 and the washer 72 are fixed, the fixing portion 731 extending from the metal terminal 73 is sandwiched between the reflecting mirror 2 and the washer 72.
A not-shown hole (hole 733 shown in FIG. 8B) of the metal terminal 73 fixed to the reflecting mirror 2 penetrates the collared metal tube 71 provided in the through-hole 23 of the reflecting mirror 2. The other power supply line 552 passing through the hole 713 is inserted, and the power supply line 8 extending from a power source (not shown) is also inserted and crimped. Thereby, in the metal terminal 73, the other power supply line 552 extending from the other external lead 542 and the power supply line 8 extending from a power source (not shown) are fixed and electrically connected.

  The assembly of the metal tube 71 with a collar, the metal terminal 73, and the washer 72 will be described with reference to FIG. The cylindrical portion 712 of the metal tube 71 with a collar is inserted from the reflecting surface 211 side of the reflecting mirror 2 toward the through hole 23. After the insertion, the collar portion 711 of the metal tube 71 with the collar comes into contact with the reflecting surface 211 of the reflecting mirror 2. From the through hole 23 of the reflecting mirror 2, one end of the tube portion 712 of the collared metal tube 71 (an end portion opposite to the collar portion 711) protrudes. The protruding portion of the cylindrical portion 712 is inserted into the hole portion 732 of the fixing portion 731 extending from the metal terminal 73, and further inserted into the hole portion 721 of the washer 72. The inserted washer 72 is fixed to the collared metal tube 71 by being crushed by a dedicated jig. Accordingly, the fixing portion 731 of the metal terminal 73 is sandwiched between the washer 72 and the collared metal tube 71.

  The other power supply line 552 extending from the other external lead 542 is inserted into the metal terminal 73 sandwiched between the flanged metal tubes 71. The other power supply line 552 is inserted into the flexible tube 64, so that the flexible tube 64 is provided over substantially the entire length thereof. The other power supply line 552 covered with the flexible tube 64 is inserted into the metal terminal 73 through the through hole 23 of the reflecting mirror 2. In the other power supply line 552, the portion inserted into the metal terminal 73 is not covered with the flexible tube 64 and is therefore exposed. Therefore, the other power supply line 552 and the power supply line 8 extending from the power source are electrically connected directly or via the metal terminal 73 by caulking the metal terminal 73.

  The flexible tube 64 is provided over the entire length of the other power supply line 552, so that the other power supply line 552 is connected to the other power supply line 552 even if the tube 64 is not fixed to the other power supply line 552. The movement is regulated by the external lead and the 542 metal terminal 73. For this reason, as shown in FIG. 7, by providing a tube 64 having flexibility over substantially the entire length extending from the other external lead 542 to the metal terminal 73 in the other power supply line 552, the through hole 23 ( Specifically, a flexible tube 64 can always be interposed between the through-hole 713) of the metal pipe 71 with a collar and the other power supply line 552.

Further, even when the metal member 73 is provided on the base member 3 as in the light source device 1 according to the sixth embodiment, as described in the light source device 1 according to the fourth embodiment, the through hole is provided. A flexible tube 64 can be formed by providing a heat-shrinkable tube or an adhesive so as to be interposed between the power supply line 23 and the other power supply line 552.
Furthermore, the flexible tube 64 is wound around a position where the film-like member covers the other power supply line 552 at a position interposed between the through hole 23 and the other power supply line 552. It can also be formed by forming in a tube shape and fixing both ends with an adhesive or the like.

  By interposing a flexible tube 64 between the through hole 23 and the other power supply line 552, the flexible tube 64 is in contact with the reflecting mirror 2 during AC lighting. Even when the vibration of the other sealing portion 513 of the high-pressure mercury lamp 5 is transmitted to the other power supply line 552 during AC lighting, the tube 64 has flexibility so that the vibration is absorbed and the vibration is transmitted to the reflecting mirror 2. Can be suppressed. As the material of the flexible tube 64, a material having heat resistance that can withstand irradiation heat from the high-pressure mercury lamp 5 is suitably used. Specifically, for example, a fluorine resin, a silicon resin, a polyimide resin, or an epoxy resin can be used as a member of the tube 64 having flexibility.

As shown in FIG. 8A, even if there is a gap between the reflecting mirror 2 and the flexible tube 64 and the reflecting mirror 2 and the flexible tube 64 are in sliding contact, the flexible tube. If 64 is a material having a small friction coefficient, such as a tube 64 made of, for example, a fluororesin, the friction between the reflecting mirror 2 and the flexible tube 64 is reduced, and noise can be further prevented. .
The reflector 2 is filled with a flexible tube 64 between the other feed line 552 and the reflecting mirror 2 in the radial direction so that the reflector 2 and the other feed line 552 are not in sliding contact with each other. Even when the flexible tube 64 is in close contact, the vibration of the other sealing portion 552 of the high-pressure mercury lamp 5 can be absorbed by the flexibility of the tube 64.

  In the light source device 1 according to the sixth embodiment, the through hole 23 is provided in the reflecting portion 21 of the reflecting mirror 2, the power supply line 552 is led out from the through hole 23, and the flexibility is provided between the through hole 23 and the power supply line 552. A metal pipe 71 is provided between the through-hole 23 and the flexible tube 64. Thereby, the light source device 1 according to the sixth embodiment can prevent the power supply line 552 and the reflecting mirror 2 from being in sliding contact with each other during AC lighting. Furthermore, it is possible to prevent the generation of sound due to the sliding contact between the power supply line 552 and the metal pipe 71.

A seventh embodiment of the light source device 1 according to the present invention will be described with reference to FIGS.
9 and 10 are explanatory views of the light source device 1 according to the present invention. FIGS. 9A and 10A are cross-sectional views taken along a pair of electrodes 521 and 522 of the high-pressure mercury lamp 5. 9B is an enlarged view in which the periphery of the through hole 23 of the light source device 1 in FIG. 9A is enlarged (an enlarged view of a portion surrounded by a dotted circle around the through hole 23 in FIG. 9A). ). 10B is an enlarged view in which the periphery of the through hole 23 of the light source device 1 in FIG. 10A is enlarged (an enlarged view of a portion surrounded by a dotted circle around the through hole 23 in FIG. 10A). ).

The light source device 1 shown in FIG. 9 is different from FIGS. 7 and 8 in that the other feeder lead 552 is bent at the other external lead 542 side with respect to the through hole 713 of the flanged metal tube 71. .
The light source device 1 shown in FIG. 10 is different from FIGS. 7 and 8 in that the flexible feeding tube 64 and the other feed line 552 covered with the tube 64 are bent.
As an explanation of FIGS. 9 and 10, differences from FIGS. 7 and 8 will be described.

As shown in FIG. 7, when a flexible tube 64 is provided in a portion surrounded by the reflection surface 211 in the other power supply line 552, the irradiation light from the high-pressure mercury lamp 5 and the reflection light from the reflection surface 211 are shielded. become. For this reason, in the other feeder 552, flexibility is provided in a portion located between the through hole 23 of the reflector 2 (specifically, the through hole 713 of the collared metal tube 71) and the other feeder 552. It is preferable to provide the tube 64 which has.
As this means, it is effective to provide the flexible tube 64 at a desired position by means using the above-described heat-shrinkable tube or means using an adhesive. Further, it is also effective to provide a flexible tube 64 by means of winding a film-like member in a desired position at a desired position and fixing it at both ends with an adhesive or the like.

  As described above, the flexible tube 64 has a bonding function, so that the through hole 23 of the reflecting mirror 2 (specifically, the through hole 713 of the collared metal tube 71) and the other feeder line 552 are provided. It is provided in the part located between. As a means for providing the tube 64 having flexibility at a desired position even if it does not have an adhesive function, a seventh embodiment using FIGS. 9 and 10 can be cited.

In FIG. 9, a bent portion 553 is provided in which the other external lead 542 side and the metal terminal 73 side are bent with respect to the through hole 713 of the flanged metal tube 71 in the other power supply line 552. The flexible tube 64 interposed between the metal tube 71 with a collar and the other power supply line 552 is sandwiched between the bent portions 553, so that the movement is restricted between the bent portions 553. Accordingly, the flexible tube 64 can be provided so as to be always interposed between the metal pipe 71 with a collar and the other power supply line 552.
Further, the other power supply line 552 is made of a metal wire such as nickel (Ni) and can be bent easily, so that the flexible tube 64 can be disposed at a desired position. For this reason, the light source device 1 shown in FIG. 9 can prevent the irradiation light from the high-pressure mercury lamp 5 and the reflected light from the reflection surface from being blocked by the flexible tube 64.

  The other power supply line 552 is made of a metal wire such as nickel (Ni), and can be bent easily. On the other hand, the flexible tube 64 is made of a tube such as a fluororesin, a silicon resin, a polyimide resin, or an epoxy resin, and these members have flexibility. For this reason, as shown in FIG. 10, the flexible tube 64 can be bent together with the other power supply line 552. Accordingly, the flexible tube 64 can be provided so as to be always interposed between the metal pipe 71 with a collar and the other power supply line 552. Furthermore, since the flexible tube 64 can be disposed at a desired position, the light source device 1 shown in FIG. 10 has flexibility to irradiate light from the high pressure mercury lamp 5 and reflected light from the reflecting surface 211. It is possible to prevent light from being blocked by the tube 64.

An eighth embodiment of the light source device 1 according to the present invention will be described with reference to FIGS.
FIG.11 and FIG.12 is explanatory drawing of the light source device 1 which concerns on this invention. FIG. 11 is a cross-sectional view taken along a pair of electrodes 521 and 522 of the high-pressure mercury lamp 5. FIG. 12A is an enlarged view in which the periphery of the through hole 23 of the light source device 1 in FIG. 11 is enlarged (enlarged view of a portion surrounded by a dotted circle around the through hole 23 in FIG. 12A). . FIG. 12B is an enlarged view of the flexible tube 64 shown in FIG.

  The light source device 1 shown in FIGS. 11 and 12 is different from FIGS. 7 and 8 in that a flexible tube 64 is provided on the metal tube 71 (so-called eyelet) 71 side with a collar. As an explanation of FIGS. 11 and 12, differences from FIGS. 7 and 8 will be described.

  The flexible tube 64 provided in the light source device 1 according to the eighth embodiment is formed of a cylindrical member provided with a collar portion 641 at one end, as shown in FIG. As shown in FIG. 12A, the flexible tube 64 is provided such that the cylindrical tube portion 642 comes into contact with the inner peripheral surface of the through hole 713 of the metal tube 71 with a collar.

  As shown in FIG. 12B, the cylindrical tube portion 642 is provided with a small hole portion 644 into which the other power supply line 552 is inserted. The small hole portion 644 is provided on the side opposite to the reflecting surface 211 side of the reflecting mirror 2 in the cylindrical portion 642 passing through the through hole 713 of the collared metal tube 71. As a result, the other power supply line 552 extending from the other external lead 542 passes through the hole 643 penetrating the central axis of the flexible tube 64 and then passes through the small hole 644 provided in the cylinder 642. The metal terminal 73 is inserted. A power supply line 8 extending from a power source (not shown) is inserted into the metal terminal 73 and caulked so that the other power supply line 552 and the power supply line 8 extending from the power supply are electrically connected directly or via the metal terminal 73. Is done.

  By inserting the other power supply line 552 into the small hole portion 644 provided in the cylindrical portion 642 of the flexible tube 64, the flexible tube 64 moves in the other power supply line 552 whose movement has passed through the small hole portion 644. Regulated by For this reason, as shown to Fig.12 (a), the tube 64 which has a softness | flexibility can always be interposed between the through-hole 713 of the metal pipe 71 with a collar, and the other electric power feeding line 552. FIG.

  By interposing a flexible tube 64 between the through hole 23 and the other power supply line 552, the flexible tube 64 is in contact with the reflecting mirror 2 during AC lighting. Even when the vibration of the other sealing portion 513 of the high-pressure mercury lamp 5 is transmitted to the other power supply line 552 during AC lighting, the tube 64 has flexibility so that the vibration is absorbed and the vibration is transmitted to the reflecting mirror 2. Can be suppressed. As the material of the flexible tube 64, a material having heat resistance that can withstand irradiation heat from the high-pressure mercury lamp 5 is suitably used. Specifically, for example, a fluorine resin, a silicon resin, a polyimide resin, or an epoxy resin can be used as a member of the tube 64 having flexibility.

As shown in FIG. 12A, even if there is a gap between the reflecting mirror 2 and the flexible tube 64 and the reflecting mirror 2 and the flexible tube 64 are in sliding contact, the flexible tube. If 64 is a material having a small friction coefficient, such as a tube 64 made of, for example, a fluororesin, the friction between the reflecting mirror 2 and the flexible tube 64 is reduced, and noise can be further prevented. .
The reflector 2 is filled with a flexible tube 64 between the other feed line 552 and the reflecting mirror 2 in the radial direction so that the reflector 2 and the other feed line 552 are not in sliding contact with each other. Even when the flexible tube 64 is in close contact, the vibration of the other sealing portion 552 of the high-pressure mercury lamp 5 can be absorbed by the flexibility of the tube 64.

  Moreover, when the flexible tube 64 is inserted into the through-hole 713 of the metal tube 71 with a collar by providing the collar portion 641 on the flexible tube 64, the cylindrical portion 642 is the reflecting surface of the reflecting mirror 2. It can be prevented from passing through the reflecting surface 211 side from the side opposite to the side 211 and falling and can be easily assembled. Furthermore, by providing the collar portion 641 on the opposite side of the reflecting surface 211 of the reflecting mirror 2, the light shielding of the reflecting surface 211 by the collar portion 641 can be prevented.

  In the light source device 1 according to the eighth embodiment, the through hole 23 is provided in the reflecting portion 21 of the reflecting mirror 2, the power supply line 552 is led out from the through hole 23, and the flexibility is provided between the through hole 23 and the power supply line 552. A metal pipe 71 is provided between the through-hole 23 and the flexible tube 64. Thereby, the light source device 1 according to the eighth embodiment can prevent the power supply line 552 and the reflecting mirror 2 from being in sliding contact with each other during AC lighting. Furthermore, it is possible to prevent the generation of sound due to the sliding contact between the power supply line 552 and the metal pipe 71.

  As a means for providing a flexible tube 64 on the through hole 23 side of the reflecting mirror 2 (specifically, the through hole 713 of the collared metal tube 71), an adhesive is applied to the through hole 713 of the collared metal tube 71. Drying may be provided.

The light source device 1 shown in FIGS. 7 to 12 may be incorporated in a projector device (not shown) in a state where the other power supply line 552 and the power supply wire 8 extending from a power source (not shown) are caulked with a metal terminal 73. is there. At this time, the feeder 8 extending from a power source (not shown) crimped to the metal terminal 73 may be pulled, and the metal terminal 73 and the fixing portion 731 extending from the metal terminal 73 may be rotated with respect to the reflecting mirror 2. In addition, with this rotation, the metal tube 71 with a collar (so-called eyelet) 71 and the washer 72 that sandwich the fixing portion 731 of the metal terminal 73 may also rotate.
In order to prevent this rotation, the washer 72 shown in FIGS. 7 to 12 is a so-called star washer (also called a lock washer or a toothed washer) provided with a plurality of projections directed to the surface of the metal terminal 73 on the fixing portion 731 side. ), The fixing portion 731 of the metal terminal 73 can be pressed toward the reflecting mirror 2, and the friction coefficient with the fixing portion 731 of the metal terminal 73 can be increased by the plurality of projections provided. The rotation of the fixing portion 731 of the metal terminal 73 can be prevented. Furthermore, since the metal pipe 71 with a collar and the washer 72 which clamp the fixing | fixed part 731 of the metal terminal 73 are also pressed, these rotations can also be prevented.
Further, in addition to the washer 72 being a star washer, the collar portion 711 (specifically, the surface of the collar portion 711 on the reflecting mirror 2 side) and the reflecting mirror 2 (specifically, the reflecting mirror 2 of the reflecting mirror 2). An anti-rotation washer for the purpose of preventing rotation may be provided between the reflecting surface 211) (not shown in FIGS. 7 to 12). As the anti-rotation washer, the above-mentioned star washer can be used. Further, the washer has a substantially C shape with a hole in the center, and is a spring washer twisted in the direction of the central axis of the hole (also called a spring washer). Also, it is a ring-shaped washer with a hole in the center and a spring property that can be pressed toward the center axis of the hole, such as a wave washer that is slightly deformed in the direction of the center of the hole (also called a wave washer) Can be used. In the spring washer and the corrugated washer, the tube portion 712 of the collared metal tube 71 is inserted into the hole, and the collar portion 711 of the collared metal tube 71 (specifically, the surface of the collar portion 711 on the reflecting mirror 2 side) and the reflecting mirror. 2 (specifically, the reflecting surface 211 of the reflecting mirror 2), the collar portion 711 of the collared metal tube 71 and the reflecting mirror 2 are connected in the direction of the central axis of the cylindrical portion 712 of the collared metal tube 71. Thus, the rotation of the flanged metal tube 71 can be suitably prevented. Furthermore, rotation of the washer 72 fixed to the end portion of the tube portion 712 of the metal pipe 71 with a collar and the fixing portion 731 of the metal terminal 73 in contact with the washer 72 can be suitably prevented.

<Experimental example 1>
In order to show the effect of the light source device 1 according to the present invention, the following experiment was conducted. The configuration of the light source device 1 used in the experiment is the same as that shown in FIG.
Reflecting mirror 2 used for the experiment is made of borosilicate glass, silica is provided with a (SiO ₂₎ and titania dielectric multilayer film consisting of (TiO ₂₎ and a reflecting surface 211. A base member 3 made of ceramic is disposed at the end of the neck 22 of the reflecting mirror 2.
Eight kinds of high-pressure mercury lamps 5 used for the experiment were prepared. In these lamps 5, the discharge tube 51 is made of quartz glass, electrodes 521 and 522 made of tungsten are sealed inside the light emitting portion 511 of the discharge tube 51, and the sealing portions 512 and 513 of the discharge tube 51 are made of molybdenum. The outer lead 541 and 542 made of molybdenum project from the end portions of the sealing portions 512 and 513 of the discharge tube 51. Further, the feed lines 551 and 552 electrically connected to the external leads 541 and 542 are formed of nickel.
The common specification of the eight types of lamps 5 prepared is that the inner volume of the light emitting unit 511 is 80 mm ³ , the distance between the electrodes 521 and 522 of the electrodes 521 and 522 enclosed in the light emitting unit 511 is 1.2 mm, and light emission amount of mercury sealed in the part 511 at 280 mg / mm ^3, the argon gas is 13 kPa. The rated voltage is 80V and the rated power is 270W.
For the eight types of lamps prepared, the same reflector and the same base member were used. At this time, each lamp 5 is located between the outer periphery of one sealing portion 512 and the inner periphery of the base member 4 from the center between the electrodes 521 and 522 in the extending direction (center axis direction) of the sealing portions 512 and 513. The adhesive 61 filled in is disposed so that the distance L2 to the light emitting portion 511 side end surface 611 of the adhesive 61 is 20 mm, and is fixed to the base member 3 by the inorganic adhesive 61.
Of the eight types of high-pressure mercury lamps 5 prepared, there are five types of lamps having a sealing portion 512 with a diameter R of φ10 mm. The light source device 1 including these five types of high-pressure mercury lamps 5 is denoted by A to E, and each specification of the light source device 1 of A to E will be described. The light source device 1 of A is formed so that the length L1 filled with the adhesive 61 is 3 mm. Therefore, L1 / R of the light source device 1 of A is 0.3. The light source device 1 for B is formed so that the length L1 filled with the adhesive 61 is 4 mm. Therefore, L1 / R of the light source device for B is 0.4. The light source device 1 of C is formed so that the length L1 filled with the adhesive 61 is 5 mm, and thus L1 / R of the light source device 1 of C is 0.5. The light source device 1 of D is formed so that the length L1 filled with the adhesive 61 is 6 mm. Therefore, L1 / R of the light source device of D is 0.6. The light source device 1 of E is formed so that the length L1 filled with the adhesive 61 is 8.7 mm, and therefore L1 / R of the light source device 1 of E is 0.87.
Of the eight types of high-pressure mercury lamps 5 prepared, the light source device 1 having three types of lamps excluding the above-described five types of high-pressure mercury lamps 5 is F to H, and each specification of the light source device 1 of F to H is explain. The light source device 1 of F is formed so that the diameter R of one sealing portion 512 is φ5.8 mm and the length L1 filled with the adhesive 61 is 4.1 mm. R is 0.7. The G light source device 1 is formed such that the diameter R of one sealing portion 512 is φ5.8 mm and the length L1 filled with the adhesive 61 is 5.8 mm. R is 1. The H light source device 1 is formed so that the diameter R of one sealing portion 512 is φ6.4 mm and the length L1 filled with the adhesive 61 is 8.3 mm. R is 1.3.
When the lamp 5 was lit, an alternating current with a frequency of 370 Hz was input.
In the experiment, a sound measurement microphone is installed in the vicinity of the reflecting mirror 2, and when 20 seconds have elapsed, 60 seconds have elapsed, 120 seconds have elapsed, and 180 seconds have elapsed since the respective lamps A to H of the light source device 1 are turned on. The noise level (dB) at the time of passage of seconds and 240 seconds was measured.
The measurement result of the light source device 1 of A to E is shown in FIG. In FIG. 13, the horizontal axis represents the lighting elapsed time (s), and the vertical axis represents the noise level (dB). In FIG. 13, the noise level (dB) in each elapsed time (s) of the light source devices 1 of A to E is plotted, and the plots in the light source devices 1 are connected by a broken line. As shown in FIG. 13, the light source device 1 of C to E having L1 / R of 0.5 or more indicates the noise level from the start of lighting until the elapse of 180 seconds. It was possible to make it 15 dB smaller than the light source device of B.
Furthermore, the measurement result of the light source device 1 of GH is shown in FIG. FIG. 14 also shows the measurement results of A to C in which the diameter R of one sealing portion 512 is different from the light source device 1 of GH. In FIG. 14, the horizontal axis represents the lighting elapsed time (s), and the vertical axis represents the noise level (dB). In FIG. 14, the noise level (dB) in each elapsed time (s) of the light source devices 1 of A to C and G to H is plotted, and the plots in the light source devices 1 are connected by a broken line. As shown in FIG. 14, the C and G to H light source devices 1 having L1 / R of 0.5 or more have noise levels from the start of lighting until 18 seconds have elapsed, and L1 / R is less than 0.5. It was possible to make it 15 dB smaller than the light source devices of A and B.
Based on the measurement results of FIGS. 13 and 14 described above, by setting L1 / R of the light source device 1 to 0.5 or more, the sound volume from the light source device 1 in the initial lighting can be effectively suppressed.

<Experimental example 2>
Further, the light emission of the adhesive 61 filled between the outer periphery of one sealing portion 512 and the inner periphery of the base member 4 from the center between the electrodes 521 and 522 of the high-pressure mercury lamp 5 of the light source device 1 according to the present invention. In order to confirm the effect of defining the distance L2 to the end surface 611 on the part 511 side, the following experiment was performed. The configuration of the light source device 1 used in the experiment is the same as that shown in FIG.
Reflecting mirror 2 used for the experiment is made of borosilicate glass, silica is provided with a (SiO ₂₎ and titania dielectric multilayer film consisting of (TiO ₂₎ and a reflecting surface 211. A base member 3 made of ceramic is disposed at the end of the neck 22 of the reflecting mirror 2.
Eight kinds of high-pressure mercury lamps 5 used for the experiment were prepared. In these lamps 5, the discharge tube 51 is made of quartz glass, electrodes 521 and 522 made of tungsten are sealed inside the light emitting portion 511 of the discharge tube 51, and the sealing portions 512 and 513 of the discharge tube 51 are made of molybdenum. The outer lead 541 and 542 made of molybdenum project from the end portions of the sealing portions 512 and 513 of the discharge tube 51. Further, the feed lines 551 and 552 electrically connected to the external leads 541 and 542 are formed of nickel.
The common specification of the eight types of lamps 5 prepared is that the inner volume of the light emitting unit 511 is 80 mm ³ , the distance between the electrodes 521 and 522 of the electrodes 521 and 522 enclosed in the light emitting unit 511 is 1.2 mm, and light emission amount of mercury sealed in the part 511 at 280 mg / mm ^3, the argon gas is 13 kPa. The rated voltage is 80V and the rated power is 270W.
For the eight types of lamps 5 prepared, the same reflecting mirror 2 and the same base member 3 were used. At this time, each lamp 5 is fixed to the base member 3 with an inorganic adhesive 61.
The light source device 1 provided with the eight types of prepared high-pressure mercury lamps 5 is designated as I to P, and each specification of the light source device 1 of I to P will be described.
In the light source devices 1 of I to M, the length L1 of the adhesive 61 filled between the outer periphery of one sealing portion 512 and the inner periphery of the base member 3 is 7 mm. In the light source device 1 of I, the diameter R of one sealing portion 512 is φ5.8 mm, and the length L2 from the center between the electrodes 521 and 522 to the light emitting portion 511 side end surface 611 of the adhesive 61 is 14 mm. In the light source device 1 of J, one sealing portion 512 has a diameter R of φ5.8 mm, and a length L2 from the center between the electrodes 521 and 522 to the light emitting portion 511 end surface 611 of the adhesive 61 is 16 mm. In the light source device 1 of K, the diameter R of one sealing part 512 is φ5.8 mm, and the length L2 from the center between the electrodes 521 and 522 to the light emitting part 511 end surface 611 of the adhesive 61 is 17 mm. In the light source device 1 of L, the diameter R of one sealing part 512 is 5.8 mm, and the length L2 from the center between the electrodes 521 and 522 to the light emitting part 511 end surface 611 of the adhesive 61 is 18 mm. In the light source device 1 of M, the diameter R of one sealing part 512 is φ5.8 mm, and the length L2 from the center between the electrodes 521 and 522 to the light emitting part 511 end surface 611 of the adhesive 61 is 20 mm.
The light source device 1 of N has a length L1 filled with an adhesive 61 of 9 mm, a diameter R of one sealing portion 512 of φ10 mm, and the end surface of the light emitting portion 511 of the adhesive 61 from the center between the electrodes 521 and 522 The length L2 up to 611 is 16 mm. The light source device 1 of O has a length L1 filled with an adhesive 61 of 13 mm, a diameter R of one sealing portion 512 of 6.4 mm, and a light emitting portion of the adhesive 61 from the center between the electrodes 521 and 522. The length L2 to 511 end surface 611 is 18 mm. The light source device 1 of P has a length L1 filled with an adhesive 61 of 5 mm, a diameter R of one sealing portion 512 of 10 mm, and an end surface of the light emitting portion 511 of the adhesive 61 from the center between the electrodes 521 and 522. The length L2 up to 611 is 20 mm.
When the lamp 5 was lit, an alternating current with a frequency of 370 Hz was input.
In the experiment, a sound measurement microphone was installed in the vicinity of the reflecting mirror 2, and the peak frequency after 20 seconds from the start of lighting of the respective lamps I to P of the light source device 1 was measured.
The measurement results of the light source devices 1 of I to P are shown in FIG. In FIG. 15, the horizontal axis is the distance from the center between the electrodes 521 and 522 to the side surface 611 on the light emitting unit 511 side of the adhesive 61 filled between the outer periphery of one sealing portion 512 and the inner periphery of the base member 4. In L2 (mm), the vertical axis represents the frequency (KHz). In FIG. 15, the peak frequency at the time of the measurement of the light source device 1 of I to P is plotted. In FIG. 15, an approximate curve is drawn from the measurement results of the light source devices 1 of I to M in which the length L1 filled with the adhesive 61 is 7 mm.
As a result of confirming the sound with a frequency of 8 to 12 KHz by 10 experimental collaborators, 10 people felt that the sound was annoying. On the other hand, as shown in FIG. 15, the peak frequency of J and N of the light source device 1 having a length L2 from the center between the electrodes 521 and 522 to the adhesive 61 of 16 mm is about 14 KHz, and between the electrodes 521 and 522. The peak frequency of L and O of the light source device 1 having a length L2 from the center to the adhesive 61 of 20 mm was about 7 to 8 KHz. As a result of confirming the sound of these peak frequencies by 10 experimental collaborators, 9 persons did not feel that the sound was annoying. In particular, as shown in FIG. 15, the light source device 1 having a length L2 of 14 mm from the center between the electrodes 521 and 522 to the adhesive 61 has a peak frequency of about 20 KHz. As a result of the confirmation, 10 people did not feel that the sound was annoying. This frequency of 20 KHz is said to be a frequency that is difficult for humans to detect.
From the above, by setting the distance L2 from the center between the electrodes 521 and 522 to the adhesive 61 in the direction of the pair of electrodes 521 and 522 so that L2 ≦ 16 mm or L2 ≧ 20 mm, the sound from the light source device 1 is heard by humans. It turns out that it can be made hard to feel as an harsh sound. In particular, the distance L2 from the center between the electrodes 521 and 522 to the adhesive 61 in the extending direction (center axis direction) of the sealing portions 512 and 513 is outside the human audible range by setting L2 ≦ 14 mm. I found out that

<Experimental example 3>
About the effect of noise suppression by filling the adhesive 61 between the through hole 23 and the other power supply line 552 using the H light source device 1 shown in Experiment 1 or by providing a flexible tube 64. confirmed.
In the light source device 1 of H shown in Experiment 1, as shown in FIG. 4, the light source device 1 in which the inorganic adhesive 61 is filled between the through hole 23 and the other feeder 552 is designated as H1, and FIG. As shown, the light source device 1 in which a flexible tube 64 made of fluororesin is provided on the other power supply line 552 to prevent sliding contact between the other power supply line 552 and the reflecting mirror 2 is denoted by H2.
When the lamp 5 was lit, alternating current with a frequency of 370 Hz was input.
In the experiment, a sound measurement microphone is installed in the vicinity of the reflecting mirror 2, and when H, H1, and H2 of the light source device 1 are turned on for 20 seconds, 60 seconds, 120 seconds, 180 The sound volume was measured when the seconds passed and when 240 seconds passed.
The measurement results of the light source device 1 of H, H1, and H2 are shown in FIG. In FIG. 16, the horizontal axis represents the lighting elapsed time (s), and the vertical axis represents the noise level (dB). In FIG. 16, the noise level (dB) in each elapsed time (s) of the light source device 1 of H, H1, and H2 is plotted, and the plot in each light source device 1 is connected by a broken line. As shown in FIG. 16, after 120 seconds from the start of lamp 5 lighting, the sound from H1 and H2 of the light source device 1 was able to be 20 dB smaller than the sound from the H light source device 1. In particular, the volume of the light source device 1 of H2 could be further suppressed immediately after the start of AC lighting.

It is explanatory drawing of the light source device which concerns on this invention. It is explanatory drawing of the light source device which concerns on this invention. It is explanatory drawing of the light source device which concerns on this invention. It is explanatory drawing of the light source device which concerns on this invention. It is explanatory drawing of the light source device which concerns on this invention. It is explanatory drawing of the light source device which concerns on this invention. It is explanatory drawing of the light source device which concerns on this invention. It is explanatory drawing of the light source device which concerns on this invention. It is explanatory drawing of the light source device which concerns on this invention. It is explanatory drawing of the light source device which concerns on this invention. It is explanatory drawing of the light source device which concerns on this invention. It is explanatory drawing of the light source device which concerns on this invention. It is explanatory drawing of the experimental result of the light source device which concerns on this invention. It is explanatory drawing of the experimental result of the light source device which concerns on this invention. It is explanatory drawing of the experimental result of the light source device which concerns on this invention. It is explanatory drawing of the experimental result of the light source device which concerns on this invention. It is explanatory drawing of the experimental result of the light source device which concerns on the past.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Light source device 2 Reflecting mirror 21 Reflecting part 211 Reflecting surface 22 Neck part 23 Through-hole 24 Insertion port 3 Base member 31 Insertion port 4 Light emission plate 5 High pressure mercury lamp 51 Discharge tube 511 Light emission part 512 One sealing part 513 The other sealing Stop part 521 One electrode 522 The other electrode 53 Foil 541 One external lead 542 The other external lead 551 One power supply line 552 The other power supply line 553 Bending part 61 Adhesive 611 Adhesive light emitting part side end face 62 Adhesive 63 Adhesive 64 Flexible tube 641 Collar portion 642 Tube portion 643 Hole portion 644 Small hole portion 645 Bent portion 71 Collared metal tube (eyelet)
711 collar portion 712 tube portion 713 through hole 72 washer 721 hole portion 73 metal terminal 731 fixing portion 732 fixing portion hole 733 metal terminal hole portion 8 power supply line L1 from power source adhesive length L2 from center between electrodes Distance L3 to the adhesive Between the through hole of the reflecting mirror and the power supply line L4 Between the through hole of the metal tube with the collar and the power supply line R Outer diameter of the sealing portion

Claims (5)

A substantially spherical light-emitting portion in which a pair of electrodes are arranged opposite to each other and 0.15 mg / mm ³ or more of mercury and halogen are enclosed in a range of 10 ⁻⁶ μmol / mm ³ to 10 ⁻² μmol / mm ³ ; AC lighting type high-pressure mercury lamp comprising a cylindrical sealing part extending from both ends of the light emitting part and an external lead protruding from the end of the sealing part and receiving an alternating current;
A reflecting mirror composed of a concave reflecting portion and a cylindrical neck portion arranged so as to surround the light emitting portion;
A cylindrical base member connected to the cylindrical neck,
An adhesive filled between the base member and the sealing portion to fix them;
A power supply line connected to the external lead;
A light source device comprising:
L1 / R ≧ 0.5 when L1 (mm) is the length filled with the adhesive in the extending direction of the sealing portion and R (mm) is the diameter of the sealing portion. A light source device. A substantially spherical light-emitting portion in which a pair of electrodes are arranged opposite to each other and 0.15 mg / mm ³ or more of mercury and halogen are enclosed in a range of 10 ⁻⁶ μmol / mm ³ to 10 ⁻² μmol / mm ³ ; AC lighting type high-pressure mercury lamp comprising a cylindrical sealing part extending from both ends of the light emitting part and an external lead protruding from the end of the sealing part and receiving an alternating current;
A reflecting mirror composed of a concave reflecting portion and a cylindrical neck portion arranged so as to surround the light emitting portion;
An adhesive that is filled between the neck and the sealing portion to fix them;
A power supply line connected to the external lead;
A light source device comprising:
L1 / R ≧ 0.5 when L1 (mm) is the length filled with the adhesive in the extending direction of the sealing portion and R (mm) is the diameter of the sealing portion. A light source device. Providing a through hole in the reflecting portion of the reflecting mirror;
Deriving the feeder from the through hole,
The light source device according to claim 1, wherein the through hole is filled with an adhesive. Providing a through hole in the reflecting portion of the reflecting mirror;
Deriving the feeder from the through hole,
The light source device according to claim 1, wherein a flexible tube is interposed between the through hole and the power supply line. The light source device according to claim 4, wherein a metal tube is provided between the through hole and the flexible tube.

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