Hereinafter, a discharge lamp according to an embodiment of the present invention will be described with reference to the drawings.
1 is a schematic external view of a light source device 1 according to an embodiment of the present invention. The light source device 1 is an apparatus for supplying ultraviolet light in UV curing or the like for curing a photosensitive resin from a monomer to a polymer by photo-curing. 1 is a perspective view of the light source device 1 when viewed from the rear surface 10a side of the housing 10; An exit port through which light from the lamp unit 100 is emitted is provided on a front surface (not shown in Fig. 1) facing the back surface 10a. An optical fiber bundle (not shown) is connected to the exit port, and the light from the lamp unit 100 is guided to the predetermined work by the optical fiber bundle. A power supply device (not shown) for supplying power to the lamp unit 100 and a light control device for adjusting the light amount of the lamp unit 100 (Not shown). On the side surface of the housing 10, a lamp replacement door 200 is provided. The one end side (front side) of the lamp exchange door 200 is pivotally supported on the housing 10 so as to be rotatable and pulls the other end side (back side 10a side) toward the outside of the housing 10, The side face of the housing 10 is opened. The lamp unit 100 is an approximately rectangular parallelepiped unit (part) having a discharge lamp 500 (to be described later) provided therein and emitting light from the discharge lamp 500. The lamp unit 100 has a lamp- And is screwed to the inner surface of the door 200.
Therefore, when the door 200 for lamp replacement is opened, the lamp unit 100 and the door 200 for lamp exchange are integrally rotated about the one end side of the lamp exchange door 200, and the lamp unit 100 Is exposed to the outside of the housing 10. As described above, in this embodiment, since the lamp unit 100 can be exposed from the housing 10 only by opening the door 200 for lamp replacement, The access is facilitated and the discharge lamp 500 can be exchanged more quickly.
The back panel 101 of the lamp unit 100 is a rectangular plate-like member made of metal and the lamp holder 300 is attached to the back panel 101. [ 6, the discharge lamp 500 is inserted into the lamp unit 100 from the lamp holder 300 when the discharge lamp 500 is mounted on the lamp unit 100, as will be described later. A front panel (not shown in Fig. 1) is provided at a position opposite to the back panel 101 in the case (lamp case) of the lamp unit 100, . Details of the configuration and functions of the lamp unit 100 will be described later.
Here, as shown in Fig. 1, when the lamp replacement door 200 is opened to define the ridgeline directions of the lamp unit 100 as X-axis, Y-axis, and Z-axis in a state in which the lamp unit 100 is exposed do. That is, in the present embodiment, the plane parallel to the back panel 101 is defined as the XY plane, and the X axis and the Y axis are defined in the horizontal direction and the vertical direction of the back panel 101, respectively. Further, a Z-axis orthogonal to the XY plane and defining a direction from the rear panel 101 of the lamp unit 100 toward the front panel is defined. Hereinafter, in the case of referring to other drawings, it is assumed that the X axis, the Y axis, and the Z axis are defined as described above.
2 is a view for explaining a structure of a lamp unit 100 provided in a light source device 1 according to an embodiment of the present invention. 2 (a) is a front view when the lamp unit 100 is viewed from the back panel 101 side. 2B is a top view for explaining the internal configuration of the lamp unit 100 and the configuration of the lamp holder 300. The top panel of the lamp unit 100 is omitted for convenience of explanation. The back panel 101 is fixed to the back surface of the lamp unit 100 by a panel fixing screw 102. Fig. 3 is a diagram showing a state in which the lever 301 at the position shown in Fig. 2 (a) is rotated about the lever axis 302 and the direction of the lever 301 is reversed.
4 is a perspective view for explaining a configuration of a discharge lamp 500 accommodated in a lamp unit 100 of a light source device 1 according to an embodiment of the present invention. 4 (a) is an exploded perspective view of the discharge lamp 500, and Fig. 4 (b) is a perspective view of the discharge lamp 500 after assembly. In this specification, the central axis (the axis orthogonal to the XY plane and parallel to the Z axis) of the discharge lamp 500 is BZ.
The lamp body 520 is a commercially available lamp having an arc tube formed using quartz glass or the like having excellent ultraviolet light transmittance and heat resistance. At both ends of the lamp body 520 are provided a base end stop 525 protruding a screw portion 523 and a tip end stop 526 protruding from the screw portion 527. A part of the lamp body 520 is formed with an elliptic sphere-shaped valve 521 whose inner diameter in the XY plane is larger than the other part of the lamp body 520. In the manufacturing process of the lamp body 520, a tip portion 522 is formed on the surface of the valve 521 in order to seal and seal the discharge medium made of mercury or rare gas or the like from the valve body 521 into the lamp body 520 . The positive electrode side detent 530 is attached to the front end side (the Z axis positive side with respect to the lamp body 520) of the lamp body 520 and the negative (Fixing nest) 510 is attached.
5 is a schematic external view of the cathode 510 on the cathode side of the discharge lamp 500 according to the present embodiment. 5 (a) is a front view of the detent 510, FIG. 5 (b) is a right side view of the detent 510, and FIG. 5 (c) is a rear view of the detent 510. The detent 510 is a substantially cylindrical member made of metal such as brass. A flange 513 protrudes from the outer peripheral surface of the detent 510. A flange 513 is fitted to the flange 513 and a first body 515 is provided on the distal end side (Z axis positive side) A portion 511 is formed.
The first moving body portion 515 is a portion inserted into the lamp unit 100 from an opening 311 (FIG. 2) of a lamp holder 300 described later. The first moving body portion 515 has a cylindrical shape, and the outer peripheral surface of the tip end of the first moving body portion 515 is chamfered in a tapered shape. A part of the outer circumferential surface (first area) is formed on the right side surface and the left side surface (not shown in Fig. 5) of the first moving body part 515 in two YZ planes having the same distance from the central axis BZ And a pair of cut surfaces 516 (second areas) that are D-cut. Further, in a separate embodiment, the cut surface 516 may be formed only on the right side surface of the first moving body portion 515. [
The second moving body part 511 is formed in a cylindrical shape with the same outer diameter as the first moving body part 515. [ On the outer circumferential surface of the second moving body part 511, there is provided an engaging pin 512 protruding vertically upward (Y-axis normal direction). The engaging pin 512 functions as an engaging portion with the engaging grooves 602 and 603 of the lamp exchange jig 600 (Fig. 9).
The flange 513 protrudes in a disc shape from the outer circumferential surface of the detent 510 and fixes the discharge lamp 500 to the lamp holder 300 when the flange 513 is attached to the lamp holder 300. 5A to 5C, the flange 513 has an upper end portion (the Y-axis positive side with respect to the central axis BZ) and a lower end portion (the Y-axis side portion with respect to the central axis BZ) And has a D-cut (planar portion) in a plane parallel to the plane. The circumferential shape (elongated portion) of the arc portion in the XY plane of the flange 513 coincides with the arc of the circle centered on the central axis BZ. Further, a receiving portion 514 is formed at one corner of the flange 513. The receiving portion 514 is formed to be engaged with the parallel pin 308 (Fig. 2 (a)) when the discharge lamp 500 is mounted on the lamp holder 300, as described later.
The flange 513 is formed in a non-point-symmetrical shape about the center axis BZ in the XY plane. Concretely, the upper end of the flange 513 coincides with the outer periphery of the first moving body 515 and the second moving body 511 in the XY plane, and the lower end of the flange 513 coincides with the outer periphery of the first moving body 515 and the outer periphery of the second moving body 511 by an interval d. 5 (b), the flange 513 is formed such that the length (first length) of the water line descending from the central axis BZ to the upper end face 513a of the flange 513 is La, the center axis BZ La = d, where Lb is the length (second length) of the water line descending from the lower surface 513b of the flange 513 to the lower surface 513b of the flange 513. [ As described later, in this embodiment, the flat portion 518 on the base end side (Z-axis side) of the flange 513 is configured to abut the reference surface R (Fig. 7) The position of the arc spot of the discharge lamp 500 coincides with the position of the first focal point of the elliptical mirror 103 (described later) in the lamp unit 100 when the lamp holder 300 is mounted on the lamp holder 300. 5 (c), the flange 513 is engaged with the left flange engaging portion 309 and the right flange engaging portion 309 on the front end side (Z-axis positive side) of the flange 513, And a countersink portion 517 into which the plunger 315 (Fig. 7) is fitted when the fitting portion 310 is received in the fitting portion 310 is formed.
As shown in Figs. 4A, 4B, 5A, 5B, and 5C, in the interior of the detent 510, a lamp insertion hole An engaging hole 528 for engaging with the base end stop 525 of the lamp body 520 and a thread portion insertion hole 536 through which the screw portion 523 of the base end stop 525 is inserted, And a nut insertion hole 534 into which a nut 524a screwed to the threaded portion 523 is inserted are formed along the central axis BZ. The inner diameter of the threaded portion insertion hole 536 is smaller than the inner diameter of the engagement hole 528 (that is, a step is formed), and the tip end side of the threaded portion insertion hole 536 A lamp abutment surface 529 abutting the base end stop 525 of the discharge lamp 500 is formed. The inner diameter of the threaded portion insertion hole 536 is smaller than the inner diameter of the nut insertion hole 534 (that is, a step is formed) and is slightly larger than the outer diameter of the threaded portion 523. A fixing surface 532 to which a nut 524a or the like is fixed is formed in the periphery of the opening on the base end side (the nut insertion hole 534 side) of the thread portion insertion hole 536. [
Next, a method of assembling the discharge lamp 500 will be described. First, bonding of the cathode 510 and the lamp body 520 constructed as described above will be described. When the base end stop 525 of the lamp body 520 is inserted into the first body 515 (i.e., the lamp insertion hole 533), the base end stop 525 comes into contact with the lamp abutment surface 529, The threaded portion 523 is inserted into the threaded portion inserting hole 536 and exposed to the nut inserting hole 534 side (i.e., the nut contacting face 532 side). When the discharge lamp 500 is turned on in this state, the luminescent spot generated in the vicinity of the cathode (not shown) of the discharge lamp 500 coincides with the first focal point of the elliptical mirror 103 (Fig. 6) And adjusts the relative positional relationship between the detent 510 and the lamp body 520. More specifically, the position in the XY plane is adjusted by using the clearance between the threaded portion 523 and the threaded portion insertion hole 536, and the position between the base end stop 525 and the lamp- (For example, a washer, a shim or the like) is inserted to adjust the position in the Z-axis direction. When the discharge lamp 500 is attached to the lamp unit 100, the center of the lamp body 520 is adjusted so that the tip portion 522 of the discharge lamp 500 is positioned lower than the height of the central axis BZ. And is rotated around the axis BZ to adjust the position in the rotational direction. The flat washer 524c, the spring washer 524b and the nut 524a are attached in order to the threaded portion 523 after the relative positional relationship between the detents 510 and the lamp body 520 is adjusted. 524a are tightened and fixed and an adhesive is poured between the proximal end of the lamp body 520 and the detents 510 (that is, in the lamp inserting hole 533) to fix them together. As a result, the connection between the cathode 510 and the lamp body 520 is completed.
Next, a description will be given of the joining of the positive electrode side bobbin 530 and the lamp body 520. Fig. As shown in Figs. 4 (a) and 4 (b), the positive electrode side nib 530 is a bottomed cylindrical member made of a metal such as brass. As described later, the retaining member 530 is electrically connected to the positive electrode connecting portion 104 of the lamp unit 100 when the discharge lamp 500 is mounted on the lamp unit 100 (Fig. 6). An insertion hole 531 for inserting the tip end engaging portion 526 of the lamp body 520 is formed in the detent 530. The tip end side of the insertion hole 531 is reduced in diameter and formed with a screw hole (not shown) that is screwed with the screw portion 527 provided on the leading end stopper 526 of the lamp body 520. The front end seam 526 of the lamp body 520 is inserted into the insertion hole 531 of the retaining member 530 and the threaded portion 527 is inserted into the insertion hole 531 of the retaining member 530. [ And screwed into the screw hole in the hole 531. As a result, the bonding of the anode 5 side and the lamp body 520 is completed.
Thus, the cathode 510, the lamp body 520, and the cathode 530 are integrally joined together along the central axis BZ to form a discharge lamp (not shown) 500) is completed.
Next, the configuration of the lamp holder 300 will be described with reference to Figs. 2 (a) and 2 (b). A lamp holder 300 for supporting the discharge lamp 500 is attached to the rear panel 101 of the lamp unit 100. The lamp holder 300 has a lever 301, a lever shaft 302, a lever bearing 303, and a holder base 305. Each constituent member of the lamp holder 300 is formed of a metal such as brass or stainless steel. A clamp 306 is formed on the front surface (Z-axis side) of the holder base 305.
The clamp 306 is a member having a function as an insertion port of the discharge lamp 500 and a function of positioning the discharge lamp 500 on the reference surface R by fixing the nib 510 of the discharge lamp 500. Details of insertion and positioning of the discharge lamp 500 will be described later. As shown in Figs. 2 (a) and 2 (b), the clamp 306 has a circular opening 311 for inserting the discharge lamp 500 therethrough. Here, the axis AZ passing through the center of the opening 311 of the clamp 306 and perpendicular to the XY plane and parallel to the Z axis is defined. In this embodiment, the inner diameter of the opening portion 311 is substantially equal to the maximum outer diameter of the first moving body portion 515 of the detent 510.
A left flange engaging portion 309 and a right flange engaging portion 309 for accommodating the flange 513 provided at the flange 510 of the discharge lamp 500 are provided at both left and right ends of the clamp 306, (Not shown). The left flange engaging portion 309 and the right flange engaging portion 310 are formed so as to extend from the front face 306a of the clamp 306 such that the cross section in the XZ plane is substantially L- The flange 513 is received in the gap formed between the front face 306a and the left flange engaging portion 309 and the right flange engaging portion 310 (details will be described later). The discharge lamp 500 is inserted into the opening 311 of the clamp 306 and the flange 513 of the cathode 510 is brought into contact with the front face 306a of the clamp 306 The flange 513 slides on the front face 306a and is received in the left flange engaging portion 309 and the right flange engaging portion 310 by rotating the detents 510 in the clockwise direction in the XY plane . The inside (i.e., the side of the axis AZ) of the left flange engaging portion 309 and the right flange engaging portion 310 is linearly cut in a plane parallel to the YZ plane, and the flat portions 309a and 309b 310a are formed.
Let Ll be the length of the water line that descends from the axis AZ to the flat portion 309a of the left flange engaging portion 309 and the distance from the axis AZ to the flat portion 310a of the right flange engaging portion 310, Lr < Lr < Lr. Specifically, in the present embodiment, Ll is set to be substantially equal to or longer than the length La of the flange 513 and shorter than La + d (FIG. 5). Lr is set to be substantially equal to the length Lb of the flange 513 or slightly longer than Lb. The upper end surface 513a and the lower end surface 513b of the flange 513 face the flat portions 309a and 310a so as to face the flat portion 309a And 310a so that the flange 513 abuts the front face 306a of the clamp 306 (details will be described later). In addition, Ll and Lr may be configured so that one of them is longer than the other (i.e., asymmetrically), and in another embodiment, Ll and Lr may be configured to be Ll > Lr.
2 (a), a parallel pin 308 which is a rod-shaped member protruding from the front surface of the clamp 306 toward the Z axis is provided on the upper left side of the left flange engaging portion 309 have. The clamp 306 is fixed to the holder base 305 by a clamp fixing screw (not shown). The holder base 305 has an opening (not shown) similar to the opening 311 of the clamp 306 and the opening (not shown) of the back panel 101 so as to allow the discharge lamp 500 to pass therethrough The wing is a disc-shaped member. The holder base 305 is fixed to the back panel 101 by a holder base fixing screw 307.
On the upper surface of the clamp 306, a lever bearing 303 is fixed by a lever bearing fixing screw 304. The lever bearing 303 is a member formed with a screw hole 314 screwed into a screw groove (not shown) at the lower end of the lever shaft 302. The clamp 306 is provided with a through hole 313 penetrating to the opening 311 at a position facing the opening of the screw hole 314 of the lever bearing 303.
The lever 301 is a member that is operated to fix the nib 510 of the discharge lamp 500 inserted into the opening 311 to the lamp holder 300 or to release the fixing. The lever 301 has one end connected to the upper end of the lever shaft 302 and a helical screw groove formed to be screwed with the screw hole 314 of the lever bearing 303 is formed on the outer periphery of the lower end of the lever shaft 302 .
2 (a) and Fig. 3, when the lever 301 at the position shown in Fig. 2 (a) is turned around the lever shaft 302 and the direction of the lever 301 is reversed, The lower end of the shaft 302 moves in the threaded hole 314 of the lever bearing 303 and in the through hole 313 of the clamp 306 in accordance with the rotation of the lever 301 so that the opening of the clamp 306 311, the pressing portion 312, which is the tip of the lever shaft 302, is projected. The pressing portion 312 protrudes from the opening portion 311 so that the nib 510 of the discharge lamp 500 is fixed to the lamp holder 300.
6 is a view for explaining a state in which the discharge lamp 500 according to the present embodiment is attached to the lamp holder 300 and shows a configuration of a part of the lamp unit 100 according to the present embodiment, And is a top view showing the lamp 500. 6 (a) shows a state immediately before the discharge lamp 500 is inserted into the lamp holder 300, Fig. 6 (b) shows a state after the discharge lamp 500 is attached to the lamp holder 300 have. 6 (a) and 6 (b), the lamp unit 100 is provided with an elliptical mirror 103 and an anode connection portion 104. The elliptical mirror 103 is a reflecting member that reflects the emitted light of the discharge lamp 500 mounted and fixed to the lamp unit 100 by the lamp holder 300 to an exit port (not shown) of the light source device 1. When the discharge lamp 500 is mounted on the lamp unit 100, the positive electrode connection portion 104 is configured to be in contact with the positive electrode side holding portion 530 to be electrically connected. The positive electrode connection portion 104 has a pressing means (not shown) such as a spring and presses the tip of the discharge lamp 500 toward the lamp holder 300 with an appropriate pressure. As the pressing means, it is preferable to use a torsion spring, a coil spring, a spiral spring, a bolus spring, a disc spring, and a ring spring.
6 (a), when the discharge lamp 500 is mounted on the lamp unit 100, first, the nip 510 of the discharge lamp 500 is rotated in the XY plane so that the flange 513 (That is, to be fitted) between the left flange engaging portion 309 and the right flange engaging portion 310 of the lamp holder 300. [ 2 (a) and 5 (b), in the present embodiment, the number of turns of the discharge lamp 500 from the central axis BZ of the nip 510 to the lower end face 513b of the flange 513, The length Lb (= La + d) of the left flange engagement portion 309 is longer than the length Ll (< La + d) of the water line falling from the center axis AZ to the flat portion 309a of the left flange engagement portion 309 . The upper end face 513a of the flange 513 is opposed to the flat portion 310a of the right flange engaging portion 310 and the lower end face 513b of the flange 513 is engaged with the left flange engaging portion To insert the discharge lamps 500 into the openings 311 so as to face the flat portions 309a of the discharge lamps 309 (i.e., in a state in which the direction of the slots 510 is rotated by 180 degrees from the state shown in Fig. 6 (a) The flat surface portion 519 on the rear surface side (front end side) of the flange 513 comes into contact with the front surface 309b of the left flange engaging portion 309, 100). As described above, in the present embodiment, the outer peripheral edge portion of the flange 513 is divided into the upper end surface 513a and the lower end surface 513b (straight portion) formed so as to extend in the direction orthogonal to the central axis BZ, Symmetrical with respect to the central axis BZ by the circular arc portion of the circular arc concentric with the body 515 (i.e., centered on the central axis BZ) (I.e., the direction of the discharge lamp 500) when inserting the inserting 510 into the inserting holes 500,
The front face 306a of the clamp and the flat portion 309a of the left flange engaging portion 309 when the cathode side flange 510 is inserted into the opening 311 of the clamp 306 as described above, And the flat portion 310a of the right flange engaging portion 310 form a flange receiving portion for receiving the flange 513. [ The flange 513 is inserted into the opening 311 of the clamp 306 from the opening 530 of the anode side by adjusting the direction of the opening 510 on the cathode side and the flange 513 is engaged with the left flange engaging portion 309 And passes through between the right flange engaging portions 310 so that the flange 513 abuts the front face 306a of the clamp 306. [ The flange 513 is rotated in the clockwise direction in the XY plane so that the flange 513 is inserted into the left flange engaging portion 309 and the right flange engaging portion 310 The gap formed between the left flange engaging portion 309 and the right flange engaging portion 310). The receptacle 514 of the flange 513 is brought into contact with the parallel pin 308 of the clamp 306 so that the further detent 510 can not be rotated clockwise do. As described above, in this embodiment, the rotation of the discharge lamp 500 in accordance with the rotation of the nipping 510 is regulated by the receiving portion 514 of the flange 513. When the rotation of the discharge lamp 500 is restricted, the tip portion 522 of the discharge lamp 500 is positioned at a position lower than the height of the central axis BZ (i.e., below the horizontal plane including the central axis BZ) And is located other than just below the center axis BZ.
7 is a partial cross-sectional view of the clamp 510 and the clamp 306 with the discharge lamp 500 attached to the lamp holder 300. As shown in Fig. 7, the lamp body 520, the nut 524, and the like in the detent 510 are omitted in order to clarify the drawing. 7, a plunger 315 is provided on a surface of the clamp 306 opposite to the back surface 309c of the left flange engaging portion 309. As shown in Fig. The plunger 315 is inserted into the counter sink portion 517 of the flange 513 when the receiving portion 514 of the flange 513 abuts on the parallel pin 308 of the clamp 306 . The flange 513 is fixed so as not to be displaced in the left flange engaging portion 309 and the flange 513 is pressed against the back face 309c side of the left flange engaging portion 309. [ As described above, the discharge lamp 500 is urged in the Z axis direction by the urging means of the positive electrode connection portion 104. In this embodiment, in addition to the urging force of the urging means, the urging force of the plunger 315 The flange 513 is positively brought into contact with the back surface 309c of the left flange engaging portion 309 which is the reference surface R by the pressing force.
When the flange 513 is positioned on the reference plane R using only the pressing means of the anode connection portion 104, the pressing force by the pressing means is transmitted to the detent 510 via the lamp body 520. [ Therefore, when the pressing force is excessively strong, when the lamp body 520 is in a high-temperature and high-pressure state, the pressing force may cause the lamp body 520 to be damaged. Therefore, in this embodiment, the function of positioning the flange 513 on the reference plane R is also shared by the plunger 315, so that the pressing force by the positive electrode connection portion 104 is not unnecessarily increased.
When the flange 513 is pressed by the plunger 315, a clicking feeling is obtained when the plunger 315 is inserted into the counter sink portion 517. Therefore, when the discharge lamp 500 is rotated, 513 can be reliably positioned in the left flange engaging portion 309 by the user. Although not shown and described in detail, the right flange engaging portion 310 has the same configuration as that of the left flange engaging portion 309. [
After the discharge lamp 500 is attached to the lamp holder 300 as described above, the lever 301 is rotated about the lever axis 302 to rotate the lever 301 in the direction of the lever 301 Lt; / RTI > As described above, when the direction of the lever 301 is reversed, the pressing portion 312 protrudes from the upper side of the opening 311 of the clamp 306 in accordance with the rotation of the lever 301, Is pressed and fixed in the opening 311. The first body part 515 of the first body part 515 is press-
Next, the cut surface 516 formed in the first moving body portion 515 will be described. The depth of the cut surface 516 shown in Figs. 5 (b) and 5 (c) in the X-axis direction is set to be longer than the length in the Y-axis direction when the pressing portion 312 is protruded to the opening 311 Respectively. 6 (a), the direction of the discharge lamp 500 is adjusted so that the lever 301 is rotated (rotated) while only the discharge lamp 500 is inserted into the lamp unit 100 The pressing portion 312 does not come into contact with the first moving body portion 515 and the pressing portion 312 can not fix the clamping portion 510 to the clamp 306. [ That is, in this embodiment, by forming the cut surface 516, the lever 301 is rotated while the discharge lamp 500 is not accurately positioned in the lamp holder 300, Thereby preventing an erroneous mounting.
As described above, when the discharge lamp 500 is attached to the lamp holder 300, the tip portion 522 of the valve 521 is positioned below the horizontal plane including the center axis BZ, BZ). ≪ / RTI > The tip portion 522 is provided for sealing and sealing the discharge medium made of mercury or rare gas in the discharge lamp 500. However, there is a problem that the depression is formed on the inner surface of the valve 521. [ If the depression is formed on the inner surface of the valve 521, there is a problem that the heat is high or the mercury is buried depending on the position. Specifically, since the discharge lamp 500 of this embodiment is mounted in a horizontal posture (i.e., on the XZ plane) in the lamp unit 100, the position of the tip portion 522 in the Y- (That is, above the horizontal plane including the central axis BZ), there is a concern that the tip portion 522 is heated to concentrate the heat and the life of the discharge lamp is shortened. When the discharge lamp 500 is mounted in the lamp unit 100 and the tip portion 522 is positioned immediately below (i.e., in the Y axis direction side), mercury is contained in the tip portion 522, There is a concern that the time required until the discharge lamp 500 is evaporated and gasified becomes long and the time required for the discharge lamp 500 to be steadily lit (that is, the time required until the quantity of light becomes constant) becomes longer. Therefore, in the present embodiment, when the discharge lamp 500 is mounted in the lamp unit 100, the tip portion 522 is positioned below the horizontal plane including the central axis BZ and directly below the central axis BZ So that the above problem is solved. The tip portion 522 has an imaginary straight line connecting the center axis BZ and the tip portion 522 at an angle of about 45 degrees with the horizontal plane including the central axis BZ when viewed in the direction of the center axis BZ It is preferable to be disposed at an oblique lower side of the central axis BZ.
As described above, in this embodiment, the direction of insertion of the discharge lamp 500 into the lamp unit 100 is regulated by making the flange 513 of the discharge lamp 500 point-symmetrical, Thereby preventing erroneous mounting. By regulating the rotation position of the nipping 510 by the receiving portion 514 of the flange 513 and the cut surface 516 of the receiving portion 510, the discharge lamp 500 So that it can be attached in a posture.
The discharge lamp 500 is removed from the lamp unit 100 by performing an operation of separating the retainer 510 from the lamp holder 300 and then discharging the discharge lamp 500 as described above, (500) to the lamp unit (100). However, since not only the lamp body 520 but also the detents 510 and 530 are very hot at the time of lamp replacement (i.e., immediately after the lamp is turned off), the detents 510 (Non-operating time) due to the fact that the discharge lamp 500 can not be immediately separated from the lamp unit 100 due to the temperature has to wait until it cools down. In the present embodiment, therefore, the discharge lamp 500 is attached and detached using the lamp replacement jig 600 in order to shorten the down time.
8 is a schematic external view of the lamp replacement jig 600 (lamp attachment / detachment tool) according to the present embodiment. Fig. 8 (b) is a view of the arrangement of the lamp replacement jig 600 of Fig. 8 (a) rotated 180 degrees about the cylindrical axis. 8 (a) and 8 (b) show a front view, a top view, and a rear view, respectively, of the lamp replacement jig 600 in order from the left side. 9 is a perspective view showing a state in which the lamp replacement jig 600 is attached to the discharge lamp 500 according to the present embodiment. The lamp exchange jig 600 is a hollow cylindrical member made of metal such as brass or stainless steel. 8 (a) and 8 (b), the tip end (back surface side) of the main body portion 601 of the lamp replacement jig 600 is passed through from the outer circumferential surface to the inner circumferential surface, L-shaped engaging grooves 602, 603 for receiving the engaging portions 512, 512 are formed. In this embodiment, the engaging grooves 602 and 603 are formed in a plane-symmetrical manner at the positions facing each other at the tip of the main body portion 601. The engaging groove 602 is a groove that engages with the engaging pin 512 when the discharge lamp 500 is mounted on the lamp unit 100 and the engaging groove 603 is a recessed portion of the discharge lamp 500 Is engaged with the engaging pin 512 when the lamp unit 100 is detached from the lamp unit 100. An inner circumferential surface of the lamp replacement jig 600 is reduced in diameter at the base end side of the lamp replacement jig 600 and an annular indicator portion 604 is formed at a base end surface of the lamp replacement jig 600 . In this embodiment, in order to know the position of the engagement grooves 602 and 603 at the tip when the lamp replacement jig 600 is viewed in the Z-axis normal direction (that is, when viewed from the front) SET "at positions corresponding to the engagement grooves 602 of the engagement grooves 604, 604, and" RELEASE "at the positions corresponding to the engagement grooves 603, respectively.
When the engaging pin 512 of the jig 510 is inserted into the opening 602a of the engaging groove 602 and the lamp replacing jig 600 is rotated clockwise in the XY plane, 512 are engaged along the engaging groove 602 and when the engaging pin 512 moves to the distal end portion 602b, the jig 510 and the lamp jig 600 are rotated in the clockwise direction And is completely fixed in the Z direction. On the other hand, when the engaging pin 512 of the jig 510 is inserted into the opening 603a of the engaging groove 603 and the lamp replacing jig 600 is rotated in the counterclockwise direction in the XY plane, The engaging pin 512 is engaged along the engaging groove 603. When the engaging pin 512 moves to the distal end portion 603b, the engaging pin 510 and the lamp replacing jig 600 are rotated in the rotational direction Counterclockwise) and in the Z direction.
A circular plate spring 605 is disposed on the back surface side of the surface portion 604 (that is, the stepped portion on the inner peripheral surface). The leaf spring 605 is a member that folds a thin plate of a torus made of a metal such as stainless steel outward. The leaf spring 605 is arranged so that the vertex of the leaf spring 605 is directed toward the tip end side of the lamp replacement jig 600. When the lamp replacement jig 600 is attached to the second body 511 of the retainer 510, the engagement pin 512 advances to the inside of the engagement groove 602. At this time, The plate spring 605 of the second body part 511 presses the base end face of the second body part 511 toward the tip of the discharge lamp 500 along the axis BZ so that the engaging pin 512 is engaged And is fixed at the distal end portion 602b of the fitting groove 602. [ Therefore, the discharge lamp 500 can be held integrally with the lamp replacement jig 600. The case where the engaging groove 603 and the engaging pin 512 are engaged is also the same except that the main body portion 601 is rotated counterclockwise and the engaging pin 512 is engaged with the end portion 603a. If the plate spring 605 has the above-described function, it may be replaced with various springs, such as a disc spring.
As described above, according to the present embodiment, since the discharge lamp 500 is held by using the lamp replacement jig 600, even when the discharge lamp 500 is at a high temperature, It can be separated from the unit 100 and replaced with a new discharge lamp. Therefore, the downtime at the time of replacing the lamp is appropriately shortened.
Next, a method of replacing the discharge lamp 500 using the lamp replacement jig 600 of the present embodiment will be described in detail. First, a case where the discharge lamp 500 is mounted on the lamp unit 100 will be described. When the discharge lamp 500 is mounted, the lamp exchange door 200 is first opened and the lamp unit 100 is exposed from the housing 10 (FIG. 1). 9, in the engagement groove 602 provided at the tip of the main body portion 601 in correspondence with the index " SET " attached to the index portion 604 of the lamp replacement jig 600, The engaging pin 512 provided in the slot 510 of the lamp 500 is inserted and the main body portion 601 is rotated until the engaging pin 512 is positioned at the distal end portion 602b of the engaging groove 602 And rotates clockwise to connect the jig 600 for lamp replacement with the jig 510.
10 is a view showing a state in which the discharge lamp 500 is mounted on the lamp unit 100 in order. The discharge lamp 500 integrated with the lamp replacement jig 600 is inserted into the opening 311 of the clamp 306 of the lamp holder 300 as shown in Fig. 6 (a), the discharge lamp 500 is inserted while aligning the center axis BZ with the center axis AZ of the opening 311. As shown in Fig. When the discharge lamp 500 is inserted, the upper end face 513a of the flange 513 contacts the inner peripheral face 309a of the left flange engaging portion 309 of the clamp 306 and the lower end face of the flange 513 The jig 600 is used to adjust the direction of the discharge lamps 500 so that the discharge lamps 513b are opposed to the inner circumferential surface 310a of the right flange engagement portion 310 of the clamp 306.
When the discharge lamp 500 (that is, the cathode 510 on the cathode side) is adjusted in the correct direction and inserted into the clamp 306, the anode 5 side electrode is connected to the anode connection portion 104 of the lamp unit 100 The anode connection portion 104 is slightly pushed in the Z-axis positive direction and the flange 513 abuts against the front face 306a of the clamp 306 and stops (Fig. 6 (b)). As described above, since the positive electrode connection portion 104 has a pressing means (not shown), the discharge lamp 500 is urged toward the Z-axis direction side by the repulsive force against the pushing of the detents 530. 10 (b), when the lamp replacement jig 600 is rotated clockwise about 90 degrees in the XY plane while the flange 513 is pressed against the clamp 306, The flange 513 rotates in accordance with the rotation of the exchange jig 600 and one of the circumferential edge portions (circular arc portion) of the flange 513 is engaged with the left flange engaging portion 309 and the other flange 513 is engaged with the right flange engagement Respectively. When the flange 513 is attached to the clamp 306, the flange 513 is urged toward the Z-axis direction side by the urging force of the plunger 315 and the retaining 530 is urged toward the Z-axis direction side by the urging force of the anode connection portion 104 The flange 513 is positively brought into contact with the reference plane R of the clamp 306 and positioned.
10 (c), when the flange 513 is positioned in the left flange engaging portion 309 and the right flange engaging portion 310, the lever 301 is moved to the center of the lever shaft 302 And the direction of the lever 301 is reversed. As described above, since the pressing portion 312 protrudes into the opening 311 of the clamp 306 in accordance with the rotation of the lever 301, the first moving body portion 515 of the detent 510 is pressed and fixed do.
10 (d), when the lever 301 is rotated to fix the clamp 510 to the clamp 306, the lamp replacing jig 600 is rotated counterclockwise to engage with the engaging groove 602 The engaging pin 512 is released from engagement and is pulled out in the Z-axis direction. When the lamp replacement jig 600 is pulled out, the mounting of the discharge lamp 500 to the lamp unit 100 is completed as shown in Fig. 10 (e).
When the installation of the discharge lamp 500 is completed, the lamp replacement door 200 is closed and the lamp unit 100 is accommodated in the housing 10. When the lamp unit 100 is started by turning on the power supply of the light source device 1, a high-voltage (high-voltage) voltage is applied between the positive electrode connection portion 104 and the lamp holder 300, . The voltage applied to the anode connection portion 104 is applied to the anode (not shown) in the valve 521 via the anode 5 side electrode 530. Also, the voltage applied to the lamp holder 300 is applied to the cathode (not shown) in the valve 521 via the cathode 510 on the cathode side. As a result, a high voltage is applied between the anode and the cathode in the valve 521, and insulation breakdown occurs between the anode and the cathode, and arc discharge is started. When the arc discharge is started, the lighting circuit supplies the current to maintain the arc discharge. Therefore, the discharge lamp 500 stably lights up. As described above, in the present embodiment, since the flange 513 of the retainer 510 is accurately positioned on the reference surface R, the position of the arc luminescent spot in the valve 521 is the same as that of the ellipsoidal mirror 103 And coincides with the position of the first focal point. Therefore, the light emitted from the discharge lamp 500 can efficiently be led to the exit port of the light source device 1.
Next, a case where the discharge lamp 500 whose life is over is exchanged will be described. 11 is a view showing a state in which the discharge lamp 500 is separated from the lamp unit 100 in order. First, when the discharge lamp 500 is detached, the lamp replacement door 200 is opened to expose the lamp unit 100 as in the case of mounting the discharge lamp 500. Next, as shown in Fig. 11 (a), the lamp replacement jig 600 is inserted into the second body 511 of the retainer 510. Then, as shown in Fig. Concretely, the engagement pin 512 is inserted into the engagement groove 603 provided at the front end of the body portion 601 in correspondence to the indicator " RELEASE " affixed to the indicator portion 604 of the lamp replacement jig 600 . 11 (b), the main body portion 601 is rotated counterclockwise until the engaging pin 512 is positioned at the distal end portion 603b of the engaging groove 603, Thereby connecting the jig 600 and the jig 510 together.
Next, as shown in Fig. 11 (c), the lever 301 is rotated about the lever axis 302 to reverse the direction of the lever 301. [ The pressing portion 312 is moved in the Y axis normal direction in accordance with the rotation of the lever 301 to release the pushing and fixing of the first moving body portion 515 of the detent 510 to the position where the first moving body portion 515 does not protrude to the opening 311 do. 11 (d), the lamp replacing jig 600 is rotated counterclockwise by about 90 degrees as shown in Fig. 11 (d), when the lever 301 is rotated to release the pushing- . At this time, since the flange 513 rotates in accordance with the rotation of the lamp replacement jig 600, the fitting between the plunger 315 and the counter-sync portion 517 of the flange 513 is released.
The lamp replacement jig 600 is rotated so that the flange 513 is overlapped with the left flange engaging portion 309 and the right flange engaging portion 310 in the Z axis direction as shown in Figure 11 (e) The discharge lamp 500 is moved to the same position as that in the case where the discharge lamp 500 is inserted into the clamp 306 (see FIG. 10 (b)). When the lamp replacement jig 600 is pulled in the Z-axis direction at that position, the flange 513 passes between the left flange engaging portion 309 and the right flange engaging portion 310, and the discharge lamp 500 can be extracted from the lamp unit 100. 11 (f), after the discharge lamp 500 is completely pulled out from the lamp unit 100 by using the lamp replacement jig 600, a separate lamp replacement jig 600 'is attached A new discharge lamp 500 'is mounted on the lamp unit 100. The mounting of the discharge lamp 500 'is the same as the case of mounting the discharge lamp 500, and a description thereof will be omitted.
As described above, according to the present embodiment, the discharge lamp 500 can be replaced by using the lamp replacement jig 600. Therefore, even when the discharge lamp 500 is replaced immediately after the lamp is turned off due to factors such as the life of the lamp or the problem, the discharge lamp 500 is reliably held without contacting the high temperature chamber 510, 100, so that the new discharge lamp 500 'can be mounted while avoiding the erroneous mounting of the discharge lamp 500' to the lamp unit 100. Therefore, the downtime at the time of replacement of the discharge lamp can be shortened as compared with the replacement of the conventional discharge lamp.
The foregoing is a description of an embodiment of the present invention. The embodiments of the present invention are not limited to those described above, and various modifications are possible within the technical scope of the present invention. For example, in the present embodiment, it has been described that the detent 510 includes the second moving body 511. However, the second moving body 511 is not necessarily required.
12 is a view showing a modified example of the discharge lamp 500 of the present embodiment. 12, in the present variation, the cathode 710 on the cathode side of the discharge lamp 700 does not include the second body portion, but is composed only of the first body portion 715 and the flange 713 The discharge lamp 500 of the present embodiment is different from the discharge lamp 500 of the present embodiment. Openings 725 and 726 are formed in the base end surface side of the flange 713. The lamp replacement jig 800 is provided with protrusions 805 and 806 shaped to fit into the opening holes 725 and 726 A through hole 807 for receiving the threaded portion 723, the nut 724a, the spring washer 724b and the flat washer 724c is formed on the inner surface of the flange 510 of the present embodiment, Jig 600 shown in FIG. At least two opening apertures 725 and 726 may be formed at symmetrical positions with the center axis CZ interposed therebetween. According to this configuration, since the discharge lamps 700 can be rotated by fitting the projections 805 and 806 of the lamp replacement jig 800 into the opening holes 725 and 726 of the flange 713, The discharge lamp 700 can be easily replaced.
In the present embodiment, the insertion direction of the discharge lamp 500 when inserting the discharge lamp 500 into the lamp unit 100 is regulated by forming the flange 513 in a point-symmetrical shape with respect to the central axis BZ. The present invention is not limited to this configuration. Other configurations may be applied if the insertion direction is restricted, and the lengths of L1, Lr, La, Lb, and d may be appropriately changed.
In the flange 513 of the present embodiment, the distance from the axis AZ to the upper end face 513a is shorter than the distance from the axis AZ to the lower end face 513b. Conversely, May be longer than the distance from the central axis BZ to the lower end surface 513b. In the present embodiment, the flange 513 is formed in a D-cut shape at the upper end and the lower end, but the present invention is not limited to this configuration. The outer peripheral edge portion of the flange 513 may be point- Can be adopted.
In the present embodiment, the outer peripheral edge portion of the flange 513 has a straight line (imaginary straight line) passing through the central axis BZ and extending in the X axis direction as a symmetrical axis when viewed in the direction of the central axis BZ, Symmetrical with respect to a straight line (imaginary straight line) passing through the central axis BZ and extending in the Y axis direction as a symmetrical axis, It is also possible to apply different shapes if possible.
Figs. 13 to 15 are views showing a modified example of the flange 513 formed in the nailing 510 of the present embodiment. Figs. 13A to 13F, Figs. 14A to 14F and Fig. 15A show the deformation of the flange 513 when viewed in the direction of the central axis BZ as in Fig. 5A (The portion corresponding to the flange 513) of each modified example is shown by a solid line and the other portion (the outer periphery of the second body 511, etc.) is indicated by a broken line for the convenience of explanation . 15 (b) is a perspective view of a flange (a portion corresponding to the flange 510) having the flange shown in Fig. 15 (a). In Figs. 13 (a) to 13 (f), 14 (a) to 14 (f) and 15 (a), the single direction arrows indicate the X axis and the Y axis orthogonal to the central axis BZ.
13 (a) is a view showing a first modification of the flange 513. The flange 513A of the present modification differs from the flange 513 of the present embodiment in that the receiving portion 514 is not formed and when the discharge lamp 500 is mounted on the lamp holder 300, The surface 513Aa is configured to abut against the parallel pin 308 so as to be restricted in rotation. In this modified example, the length (first length) of the imaginary line drawn from the top face 513Aa of the flange 513A formed along the Y axis direction with respect to the X axis is m1 and the length from the bottom plane 513Ab to the X axis (Second portion) of the flange 513A formed in the X-axis direction (i.e., the left end face 513Ac (circular arc portion) of the flange 513A) and the right end face (Third length) connecting the central axis BZ with the center axis 513Ad (arc portion) and the center axis BZ is n1, and m1 and m2 are different from each other, and when n1 is longer than m1 and m2 Respectively. That is, the outer peripheral edge portion of the flange 513A of this modification is formed in a line-symmetrical shape with respect to the X axis and in a line-symmetrical shape with respect to the Y axis when viewed in the direction of the central axis BZ, And is formed in a non-point-symmetrical shape. Therefore, when the discharge lamp 500 is inserted into the lamp unit 100, the flange 513A having such a shape can regulate the inserting direction of the detents 510A (i.e., the direction of the discharge lamp 500) have.
13 (b) is a view showing a second modification of the flange 513. The flange 513B of the present modification differs from the flange 513 of the present embodiment in that the outer periphery of the flange 513B is formed in an elliptic shape with the center axis BZ as the center. That is, in the outer peripheral edge portion of the flange 513B of this modification, a top surface 513Ba on the positive side in the Y-axis direction formed in an elliptical arc shape, a bottom surface 513Bb on the Y axis direction side portion formed in an elliptical arc shape, A left end surface 513Bc on the side of the formed X axis direction and a right side surface 513Bd on the positive side in the X axis direction formed in an elliptical arc shape are formed. In this modification, the length (first length) of the longest imaginary line among the imaginary lines drawn along the X axis from the top surface 513Ba of the flange 513B formed along the Y axis direction is m1 and the length (Second length) of the longest imaginary line of the imaginary line drawn from the right side of the flange 513B from the right side 513Bb of the flange 513B to the left side of the flange 513B (Third length) of the longest imaginary straight line connecting the center axis BZ and the center line BZ of the right side end face 513Bc and the right side end face 513Bc is n1 and m1 and m2 are different from each other and n1 is m1 And < RTI ID = 0.0 > m2. ≪ / RTI > That is, the outer peripheral edge portion of the flange 513B of this modification is formed in a line-symmetrical shape with respect to the X-axis and in a line-symmetrical shape with respect to the Y-axis when viewed in the direction of the central axis BZ, And is formed in a non-point-symmetrical shape. Therefore, when the discharge lamp 500 is inserted into the lamp unit 100, the flange 513B having such a shape can regulate the inserting direction of the nipping 510B (i.e., the direction of the discharge lamp 500) have.
13 (c) is a view showing a third modification of the flange 513. The outer peripheral edge portion of the flange 513C of this modification has a shape obtained by combining a circular section of the flange 513A of the first modified example with a part of the left end face 513Bc and the right end face 513Bd of the flange 513B of the second modification Respectively. That is, the upper end surface 513Ca and the lower end surface 513Cb of the flange 513C are formed in an elliptical arc shape and the area of the first quadrant of the right end face 513Cd and the region of the third quadrant of the left end face 513Cc The area of the second quadrant of the left end face 513Cc and the area of the fourth quadrant of the right end face 513Cd are formed as an arc centered on the central axis BZ, Respectively. In this modified example, a concave portion 513Ce recessed in an arc shape is formed between the upper end surface 513Ca and the right end surface 513Cd, and a circular arc shape is formed between the lower end surface 513Cb and the left end surface 513Cc. The concave portion 513Cf is formed. Also in this modified example, the length (first length) of the longest imaginary line among the imaginary lines drawn from the top surface 513Ca of the flange 513C formed along the Y axis direction with respect to the X axis is m1 and the length (Second length) of the longest imaginary line drawn from the X-axis direction of the flange 513C and the longest imaginary line of the imaginary line drawn from the X-axis of the flange 513C (Third length) of the longest imaginary straight line connecting the center axis BZ and the center axis BZ of the right side section 513Cc and the right side section 513Cd is n1, and m1 and m2 are different from each other and n1 is m1 And < RTI ID = 0.0 > m2. ≪ / RTI > That is, the outer peripheral edge portion of the flange 513C of this modification is non-linearly symmetric with respect to the X axis and nonlinearly symmetrical with respect to the Y axis when viewed in the direction of the central axis BZ, And is formed in a non-point-symmetrical shape. According to the flange 513C of this shape, when inserting the discharge lamp 500 into the lamp unit 100, it is possible to regulate the inserting direction of the inserting 510C (i.e., the direction of the discharge lamp 500) have.
13 (d) is a view showing a fourth modified example of the flange 513. The outer peripheral edge portion of the flange 513D of the present modification example has a portion corresponding to the left end face 513Ac (circular arc portion) and the right end face 513Ad (circular arc portion) of the flange 513A of the first modification, , Polygonal shape), which is different from the flange 513A of the first modification. Also in this modified example, the length (first length) of the imaginary line drawn from the top face 513Da of the flange 513D formed along the Y-axis direction with respect to the X axis is m1 and the length from the bottom face 513Db to the X- (I.e., the left end face 513Dc and the right end face 513Dd of the flange 513D) of the flange 513D formed in the X-axis direction and the length (second length) (Third length) connecting the center axis BZ to the central axis BZ is n1, m1 and m2 are different from each other, and n1 is longer than either m1 or m2. That is, the outer peripheral edge portion of the flange 513D of the present modification is formed in a line-symmetrical shape with respect to the X axis and in a line-symmetrical shape with respect to the Y axis when viewed in the direction of the central axis BZ, And is formed in a non-point-symmetrical shape. Therefore, when the discharge lamp 500 is inserted into the lamp unit 100, the flange 513D having such a shape can regulate the inserting direction (i.e., the direction of the discharge lamp 500) have.
Fig. 13 (e) is a view showing a fifth modified example of the flange 513. Fig. The outer peripheral edge portion of the flange 513E of this modification shows a shape obtained by combining the right side of the flange 513B of the second modification and the left side of the flange 513A of the first modification. That is, the left end face 513Ec of the flange 513E is formed as an arc centered on the central axis BZ and the right end face 513Ed of the flange 513E is formed as an oval arc centered on the central axis BZ . Also in this modified example, the length (first length) of the longest imaginary line of the imaginary line drawn from the top surface 513Ea of the flange 513E formed along the Y axis direction with respect to the X axis is m1, (Second length) of the longest imaginary line of the imaginary line drawn from the right side of the flange 513E from the right side 513Eb of the flange 513E and the left side of the flange 513E of the flange 513E formed in the X- (Third length) of the longest imaginary straight line connecting the center axis BZ and the center axis BZ of the right side end face Ec of the right side end face Ec is n1, And < RTI ID = 0.0 > m2. ≪ / RTI > That is, the outer peripheral edge portion of the flange 513E of the present modification is nonlinearly symmetrical with respect to the X axis and nonlinearly symmetrical with respect to the Y axis when viewed in the direction of the central axis BZ, And is formed in a non-point-symmetrical shape. Therefore, when the discharge lamp 500 is inserted into the lamp unit 100, the flange 513E having such a shape can regulate the inserting direction of the detents 510E (i.e., the direction of the discharge lamp 500) have.
Fig. 13 (f) is a view showing a sixth modified example of the flange 513. Fig. The outer peripheral edge portion of the flange 513F of the present modification example has the flange 513A of the first modified example in which the left lower portion (the area of the third quadrant) and the upper right portion (the area of the first quadrant) A cutout portion 513Fg is formed in the region of the first quadrant, and a cutout portion 513Fh is formed in the region of the third quadrant. A concave portion 513Ff recessed in an arc shape is formed between the left end face 513Fc of the flange 513F and the cutout 513Fh and a circular arc shape is formed between the right end face 513Fd and the cutout 513Fg And a protruded convex portion 513Fe is formed. Also in this modified example, the length (first length) of the longest imaginary line among the imaginary lines drawn with respect to the X axis from the top face 513Fa of the flange 513F formed along the Y axis direction is m1, (Second length) of the longest imaginary line of the imaginary line drawn from the right side of the flange 513F from the right side of the flange 513F and the outer side edge of the flange 513F formed in the X- (Third length) of the longest imaginary straight line connecting the center axis BZ and the center axis BZ of the right side end face 513Fc and the right side end face 513Fc is n1 and m1 and m2 are different from each other and n1 is m1 And < RTI ID = 0.0 > m2. ≪ / RTI > That is, the outer peripheral edge portion of the flange 513F of this modification is non-linearly symmetric with respect to the X axis and non-linearly symmetrical with respect to the Y axis when viewed in the direction of the central axis BZ, And is formed in a non-point-symmetrical shape. Therefore, when the discharge lamp 500 is inserted into the lamp unit 100, the flange 513F having such a shape can regulate the inserting direction (i.e., the direction of the discharge lamp 500) have.
Fig. 14 (a) is a view showing a seventh modification of the flange 513. Fig. The flange 513G of the present modification has the first flange portion 513G1 and the second flange portion 513G so as to protrude in a substantially rectangular shape in the directions of 45 °, 135 °, 225 °, and 315 ° with respect to the central axis BZ, 513G2, a third flange portion 513G3, and a fourth flange portion 513G4. The upper ends of the first flange portion 513G1 and the second flange portion 513G2 are cut so as to be parallel to the X axis, and an upper end surface 513Ga is formed. The lower ends of the third flange portion 513G3 and the fourth flange portion 513G4 are cut so as to be parallel to the X axis, and a lower end face 513Gb is formed. Also in this modified example, the length (first length) of the longest imaginary line among the imaginary lines drawn from the top face 513Ga of the flange 513G formed along the Y-axis direction with respect to the X axis is m1 and the length (I.e., the first flange portion 513G1) of the flange 513G formed in the X-axis direction and the length (second length) of the longest imaginary line of the imaginary line drawn from the X- The left end face 513G2c of the second flange portion 513G2 and the left end face 513G3c of the third flange portion 513G3 and the right end face 513G4d of the fourth flange portion 513G4) When the length (third length) of the longest imaginary straight line connecting the central axes BZ is n1, m1 and m2 are different and n1 is formed longer than either m1 or m2 . That is, the outer peripheral edge portion of the flange 513G of the present modification is formed in a line-symmetrical shape with respect to the X axis and in a line-symmetrical shape with respect to the Y axis when viewed in the direction of the central axis BZ, And is formed in a non-point-symmetrical shape. Therefore, when the discharge lamp 500 is inserted into the lamp unit 100, the flange 513G having such a shape can regulate the inserting direction of the detents 510G (i.e., the direction of the discharge lamp 500) have.
14 (b) is a view showing a modification 8 of the flange 513. The flange 513H of this modification has a first flange portion 513H1 formed so as to protrude in a substantially trapezoidal shape in the directions of 30 DEG, 150 DEG, 210 DEG and 330 DEG about the center axis BZ, A fifth flange portion 513H2, a third flange portion 513H3, and a fourth flange portion 513H4, a fifth flange portion 513H5 formed to protrude upward along the Y-axis direction, and a third flange portion 513H2 formed to protrude downward along the Y- And a sixth flange portion 513H6. An upper end surface 513Ha parallel to the X axis is formed at the upper end of the fifth flange portion 513G5. A lower end surface 513Hb parallel to the X axis is formed at the lower end of the sixth flange portion 513G6. Also in this modified example, the length (first length) of the longest imaginary line among the imaginary lines drawn from the top surface 513Ha of the flange 513H formed along the Y-axis direction with respect to the X axis is m1 and the length (I.e., the first flange portion 513H1) of the flange 513H formed in the X-axis direction and the length (second length) of the longest imaginary line drawn from the X- The left end face 513H2c of the second flange portion 513H2, the left end face 513H3c of the third flange portion 513H3 and the right end face 513H4d of the fourth flange portion 513H4 and the center When the length (third length) of the longest imaginary straight line connecting the axes BZ is n1, m1 and m2 are different from each other and n1 is longer than either m1 or m2. In other words, the outer peripheral edge portion of the flange 513H of the present modification example is inclined with respect to the X-axis as viewed from the central axis BZ direction Symmetrical with respect to the center axis BZ of the flange 513H of the discharge lamp 500. According to the flange 513H having such a shape, (That is, the direction of the discharge lamp 500) when inserting the detents 510H into the inserting hole 100. [
Fig. 14 (c) is a view showing a ninth modification of the flange 513. Fig. The outer peripheral edge portion of the flange 513I of the present modification cuts off a part of the flange 513A of the first modification and shows a substantially linear sector shape as a whole. When viewed from the central axis BZ direction, A first flange portion 513I1 formed so as to protrude substantially in a trapezoidal shape on the right side (in the X-axis direction) along the X-axis direction, and a second flange portion 513I1 formed to protrude substantially linearly in the X- And a branch portion 513I2. An upper end surface 513Ia inclined downward with respect to the X-axis is formed at the upper end of the second flange portion 513I2. A lower end surface 513Ib is formed at the lower end of the second flange portion 513I2 with an upward slope with respect to the X-axis. Also in this modified example, the length (first length) of the longest imaginary line among the imaginary lines drawn along the X axis from the top face 513Ia of the flange 513I formed along the Y axis direction is m1 and the length (I.e., the first flange portion 513I1) of the flange 513I formed in the X-axis direction and the length (second length) of the longest imaginary line of the imaginary line drawn from the first flange portion 513Ib to the X- When the length (third length) of the longest imaginary straight line connecting the center axis BZ and the right end face 513Id of the second flange portion 513I2 and the left end face 513Ic of the second flange portion 513I2 is n1, m1 and m2 are different from each other and n1 is longer than either m1 or m2. That is, the outer peripheral edge portion of the flange 513I of this modification is nonlinearly symmetrical with respect to the X axis and nonlinearly symmetrical with respect to the Y axis when viewed in the direction of the central axis BZ, And is formed in a non-point-symmetrical shape. Therefore, when the discharge lamp 500 is inserted into the lamp unit 100, the flange 513I having such a shape can regulate the inserting direction (that is, the direction of the discharge lamp 500) have.
Fig. 14D is a view showing a tenth modification of the flange 513. Fig. The left end face 513Jc of the flange 513J of this modification protrudes greatly in the lower left direction and the right end face 513Jd of the flange 513J protrudes greatly in the lower right direction side to show a rice ball shape. Also in this modified example, the length (first length) of the longest imaginary line among the imaginary lines drawn from the top face 513Ja of the flange 513J formed along the Y axis direction with respect to the X axis is m1 and the length (The second length) of the longest imaginary line drawn from the X-axis of the flange 513J and the longest imaginary line drawn from the X-axis of the flange 513J (Third length) of the longest imaginary straight line connecting the center axis BZ and the center line BZ between the right end 513Jc and the right end 513Jd is n1 and m1 and m2 are different from each other and n1 is m1 And < RTI ID = 0.0 > m2. ≪ / RTI > That is, the outer peripheral edge portion of the flange 513J of this modification is formed in a line-symmetrical shape with respect to the X-axis and in a line-symmetrical shape with respect to the Y-axis when viewed in the direction of the central axis BZ, And is formed in a non-point-symmetrical shape. Therefore, when the discharge lamp 500 is inserted into the lamp unit 100, the flange 513J having such a shape can regulate the inserting direction (i.e., the direction of the discharge lamp 500) have.
14 (e) is a view showing a modification 11 of the flange 513. The outer peripheral edge portion of the flange 513K of the present modification has the flange 513A of the first modification in that concavities and convexities are formed in a portion corresponding to the right end face 513Ad and the lower end face 513Ab of the flange 513A of the first modification, ). Also in this modified example, the length (first length) of the imaginary line drawn from the upper end surface 513Ka of the flange 513K along the Y-axis direction with respect to the X-axis is m1 and the length from the lower end surface 513Kb to the X- (I.e., the right side end face 513Kd and the left side end face 513Kc) of the flange 513K formed in the X-axis direction and the length (second length) (Third length) of the longest imaginary straight line connecting the center axis BZ and the imaginary straight line connecting the center axis BZ is n1, m1 and m2 are different from each other and n1 is formed longer than either m1 or m2 have. That is, the outer peripheral edge portion of the flange 513K of this modification is non-linearly symmetrical with respect to the X axis and non-linearly symmetrical with respect to the Y axis when viewed in the direction of the central axis BZ, And is formed in a non-point-symmetrical shape. Therefore, when the discharge lamp 500 is inserted into the lamp unit 100, the flange 513K having such a shape can regulate the inserting direction (that is, the direction of the discharge lamp 500) have.
Fig. 14 (f) is a view showing a twelfth modification of the flange 513. Fig. The outer peripheral edge portion of the flange 513L of the present modification has the flange 513La of the first modification in that it has the upper end surface 513La, the lower end surface 513Lb, the left end surface 513Lc and the right end surface 513Ld formed with a predetermined free- Gt; 513A. ≪ / RTI > Also in this modified example, the length (first length) of the longest imaginary line among the imaginary lines drawn from the top face 513La of the flange 513L formed along the Y-axis direction with respect to the X axis is m1, (The second end) of the flange 513L formed in the X-axis direction (that is, the right end face 513Ld and the left end 513Lb of the flange 513L) formed in the X- (Third length) of the longest imaginary straight line connecting the center axis BZ and the cross-section 513Lc of the center axis B1 is n1, and m1 and m2 are different from each other and n1 is any of m1 and m2 As shown in Fig. That is, the outer peripheral edge portion of the flange 513L of this modification is non-linearly symmetric with respect to the X axis and nonlinearly symmetrical with respect to the Y axis when viewed in the direction of the central axis BZ, And is formed in a non-point-symmetrical shape. Therefore, when the discharge lamp 500 is inserted into the lamp unit 100, the flange 513L having such a shape can regulate the inserting direction of the detents 510L (i.e., the direction of the discharge lamp 500) have.
Figs. 15A and 15B are views showing a thirteenth modification of the flange 513. Fig. The flange 513M of this modification has a cylindrical first flange portion 513M1 formed to project rightward (in the X-axis direction positive side) along the X-axis direction when viewed from the center axis BZ direction, A cylindrical second flange portion 513M2 protruding to the left (X axis direction side), a cylindrical third flange portion 513M3 formed to protrude downward (Y axis direction side) along the Y axis direction, . That is, in this modification, the right end face 513Md is formed at the front end of the first flange portion 513M1, the left end face 513Mc is formed at the front end of the second flange portion 513M2, And a lower end surface 513Mb is formed at the tip of the lower surface 513M3. In this modification, since the flange 513M is not formed on the positive side in the Y-axis direction (i.e., on the upper side), the outer peripheral surface 510Ma of the flange 510M functions as the upper end surface of the flange 513M . Also in this modified example, the length (first length) of the imaginary line drawn from the top face of the flange 513M formed along the Y axis direction (i.e., the outer peripheral face 510Ma of the insert 510M) with respect to the X axis is m1 (The second flange portion 513M1) of the flange 513M formed in the X-axis direction and the length (second length) of the imaginary line drawn from the lower end face 513Mb with respect to the X- When the length (third length) of the imaginary straight line connecting the center axis BZ and the right end face 513Md of the first flange portion 513M2 and the left end face 513Mc of the second flange portion 513M2 is n1, And n1 is longer than either m1 or m2. That is, the outer peripheral edge portion of the flange 513M of this modification is formed in a line-symmetrical shape with respect to the X axis and in a line-symmetrical shape with respect to the Y axis when viewed in the direction of the central axis BZ, And is formed in a non-point-symmetrical shape. Therefore, when the discharge lamp 500 is inserted into the lamp unit 100, the flange 513M having such a shape can regulate the inserting direction of the detents 510M (i.e., the direction of the discharge lamp 500) have. In this modification, the first flange portion 513M1, the second flange portion 513M2, and the third flange portion 513M3 have a cylindrical shape. Therefore, when the bolt 510M having the flange 513M of this modification is mounted on the clamp 306 (that is, the first flange portion 513M1 is accommodated in the right flange engaging portion 310, The first flange portion 513M1 and the second flange portion 513M2 are in linear contact with the reference plane R when the flange portion 513M2 is accommodated in the left flange engaging portion 309. [ As described above, the flange 513 of the present embodiment and the flanges 513A to 510L of the first to twelfth modifications do not necessarily have to be flat at the base end side of the flange but may have a shape that linearly abuts the reference surface R Or the surface may be subjected to embossing or the like so as to come into contact with the reference surface R in a point shape.
In the present embodiment and the first to thirteenth modified examples, the length (first length) m1 of the longest imaginary line among the imaginary lines perpendicular to the X axis from the top surface of the flange formed along the Y axis direction, (Second length) m2 of the longest imaginary line of water drawn from the bottom surface with respect to the X axis and a virtual straight line connecting the outer peripheral edge portion of the flange formed in the X axis direction and the center axis BZ (Third length) n1 of the longest imaginary line (n1) of the longest imaginary straight line among the three straight lines, and the shape of the outer peripheral edge portion of the flange is specified from the relationship of these three parameters (i.e., m1 and m2 are different, m 2), the shape of the outer peripheral edge portion of the flange of the first to thirteenth modified examples can be specified from other viewpoints. For example, the length (first length) m1 of the longest imaginary line among the imaginary lines drawn from the top surface of the flange formed along the Y-axis direction with respect to the X axis and the imaginary line drawn from the bottom plane The length of the longest waterline of the virtual waterline descending with respect to the Y axis from the length (second length) m2 of the longest virtual waterline and the outer peripheral edge portion of one end of the flange formed in the X axis direction (Third length) n1 and the length of the longest waterline (fourth length) of the imaginary line drawn from the outer peripheral edge portion of the other end of the flange (that is, the left end face of the flange) n2), and the shape of the outer peripheral edge portion of the flange can be specified from the relationship of these four parameters. In this case, the flange 513 of the present embodiment and the flanges 513A to 510M of the first to thirteenth modification are formed such that the sum of n1 and n2 is longer than the sum of m1 and m2.
In the discharge lamp 500 of the present embodiment, a cut surface 516 formed by cutting a part of the outer circumferential surface of the first moving body portion 515 of the jig 510 in the YZ plane is D-shaped. However, The surface 516 is not necessarily limited to this configuration.
The cut surface 516 faces the pressing portion 312 and the discharge lamp 500 can not be fixed in a state in which the discharge lamp 500 is only inserted into the lamp unit 100 as described above, As long as the discharge lamp 500 is not accurately positioned in the lamp holder 300 (that is, as long as the discharge lamp 500 is not correctly positioned in the lamp holder 300) The discharge lamp 500 can not be fixed and the cut surface 516 need not necessarily be formed only in a flat surface (as long as the outer peripheral surface of the first trunk portion 515 does not oppose the pressing portion 312) none.
16 and 17 are views showing a modified example of the discharge lamp 500 of the present embodiment. The discharge lamp 500A shown in Fig. 16 has a groove portion 517 extending in the peripheral direction of the outer peripheral surface of the first moving body portion 515 of the jig 510 and formed so as to be continuous with the cut surface 516, And is different from the discharge lamp 500 of the present embodiment. The groove 517 is formed in a predetermined range of the first moving body 515 opposed to the pressing portion 312 when the discharging lamp 500 is inserted into the lamp unit 100 and the detent 510 is rotated clockwise The width of the groove 517 is slightly larger than the width of the tip of the pressing portion 312 and the depth of the groove 517 is larger than the width of the projection 517 when the pressing portion 312 protrudes into the opening 311 And the tip end of the groove portion 517 extends to the front of the outer peripheral surface of the first moving body portion 515 opposed to the pressing portion 312 when the discharge lamp 500 is completely mounted. That is, in this modification, the outer peripheral surface of the first moving body portion 515 does not oppose the pressing portion 312 until the discharge lamp 500 is completely mounted, and even if the lever 301 is rotated, 500 can not be fixed.
The discharge lamp 500B shown in Fig. 17 is a further modified example of the discharge lamp 500A shown in Fig. 16, in which the groove 517M is formed over the tip portion (the end on the positive side in the Z axis direction) And is different from the groove portion 517 of the discharge lamp 500A shown in Fig. The groove 517M of the discharge lamp 500A shown in Fig. 16 is arranged so that the outer periphery of the first body 515 is pressed The discharge lamp 500 can not be fixed even if the lever 301 is rotated without facing the pressing portion 312.
In order to prevent the erroneous mounting of the discharge lamp 500, the pressing portion 312 is prevented from touching the first body 515 of the retainer 510 until the discharge lamp 500 is completely mounted When the discharge lamp 500 is completely mounted, only a predetermined area of the first moving body 515 opposed to the pressing portion 312 becomes higher (that is, (That is, the distance from the pressing portion 312 is long) may be configured.
It is also to be understood that the embodiments disclosed herein are illustrative in all respects and are not restrictive. The scope of the present invention is indicated by the claims rather than the above description, and it is intended that all changes within the meaning and scope equivalent to the claims are included.
