What is claimed is:
1. A disc case comprising:
a tray having a recess to be stored with a disc;
a disc supporting portion formed on a peripheral wall portion of the recess and capable of supporting the outer peripheral portion of the disc in a manner such that the recording surface of the disc is floating;
at least one of spring portion provided on the peripheral wall portion of the tray in the circumferential direction thereof and each including a spring element adapted to urge the outer peripheral portion of the disc in a diametrical direction of the disc, thereby bending the spring element in a direction to allow the insertion of the disc into the recess, as the disc is inserted into the recess and
a protuberance for preventing the disc from slipping out of the recess.
2. A disc case according to claim 1, wherein said tray is formed having a slot extending in the circumferential direction of the peripheral wall portion, and said arm-shaped spring element extends along the slot between the opposite ends thereof and is formed integrally with the tray, the spring element being formed having the protuberance and the guide surface.
3. A disc case according to claim 1, wherein said recess is shaped along an ellipse or oval having a major axis extending in a direction in which the spring element can bend and a minor axis extending at right angles to the major axis.
4. A disc case according to claim 1, wherein said tray is formed having, in a side portion thereof, an opening communicating with the recess and serving to enable a user to touch the outer peripheral portion of the disc with hisher finger as the user takes out the disc from the recess.
5. A disc case according to claim 3, wherein said tray is formed having, in a side portion thereof, an opening communicating with the recess and serving to enable a user to touch the outer peripheral portion of the disc with hisher finger as the user takes out the disc from the recess.
6. A disc case according to claim 5, wherein those spring portions which are remote from the opening have a shape such that the spring portions can bend deeper in the diametrical direction of the disc than those spring portions which are situated near the opening can.
7. A disc case according to claim 6, wherein said respective protuberances of the spring portions that are remote from the opening are larger than the respective protuberances of the spring portions that are situated near the opening.
8. A disc case according to claim 1, wherein said tray is formed of an optically transparent synthetic resin and is provided, in the backside thereof, with printed matter printed with a picture(s), pattern(s), andor character(s).
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A light source device including;
a high pressure discharge lamp in which
a discharge chamber having a pair of electrodes opposed each other and at least mercury and a starting gas filled therein is formed in the center of an arc tube, a pair of electrode seal portions extend from the discharge chamber to both ends of the arc tube, and connected by way of electrode leads extending from end faces of the electrode seal portions to a lighting circuit,
a concave reflector to which the lamp is secured by inserting one electrode seal portion thereof through a bottom hole opened in the bottom of the reflector; and
a start assisting light source that radiates UV-light to the discharge chamber for enhancing the starting performance of the lamp upon startup lighting of the lamp, wherein
the start assisting light source comprising an airtight vessel formed of ceramics and filled with a rare gas and a pipe member penetrating through the vessel is mounted to the electrode lead protruding from the end face of the one electrode seal portion secured to the bottom hole of the concave reflector by inserting the electrode lead through the pipe member, and
the airtight vessel is formed entirely or at a portion opposing the end face of the one electrode seal portion with translucent ceramics.
2. A light source device according to claim 1, wherein the airtight vessel is assembled with
a cylindrical vessel body opened at both ends,
a pair of apertured caps for capping openings on both ends of the vessel body, and
the pipe member fitted into the apertures of both of the caps for closing the apertures thereof.
3. A light source device according to claim 2, wherein
the apertured cap opposing the end face of the one electrode seal portion is formed of translucent ceramics.
4. A light source device according to claim 1, wherein
the airtight vessel is assembled with
a vessel body of a double cylindrical structure in which one end of an outer cylinder and one end of an inner cylinder as the pipe member are joined integrally to close one end of the outer cylinder, and
an apertured cap in which the other end of the inner cylinder is fitted into the aperture while capping the opening on the other end of the outer cylinder.
5. A light source device according to claim 1, wherein
the airtight vessel comprises a capsule type vessel assembled with a body and a cap capped over the body, in which an aperture for inserting the pipe member is formed in the body and the cap.
6. A light source device according to claim 1, wherein
the pipe member comprises a ceramic pipe, in which a stopper metal is welded to the electrode lead inserted through the pipe member for preventing the pipe member from moving in a direction receding from the end face of the one electrode seal portion where the electrode lead protrudes therefrom.
7. A light source device according to claim 1, wherein
the pipe member comprises a metal pipe in which the end of the pipe member is welded to the electrode lead inserted through the pipe member.
8. A light source device according to claim 2, wherein
the pipe member comprises a ceramic pipe, in which a stopper metal is welded to the electrode lead inserted through the pipe member for preventing the pipe member from moving in a direction receding from the end face of the one electrode seal portion where the electrode lead protrudes therefrom.
9. A light source device according to claim 3, wherein
the pipe member comprises a ceramic pipe, in which a stopper metal is welded to the electrode lead inserted through the pipe member for preventing the pipe member from moving in a direction receding from the end face of the one electrode seal portion where the electrode lead protrudes therefrom.
10. A light source device according to claim 4, wherein
the pipe member comprises a ceramic pipe, in which a stopper metal is welded to the electrode lead inserted through the pipe member for preventing the pipe member from moving in a direction receding from the end face of the one electrode seal portion where the electrode lead protrudes therefrom.
11. A light source device according to claim 5, wherein
the pipe member comprises a ceramic pipe, in which a stopper metal is welded to the electrode lead inserted through the pipe member for preventing the pipe member from moving in a direction receding from the end face of the one electrode seal portion where the electrode lead protrudes therefrom.
12. A light source device according to claim 2, wherein
the pipe member comprises a metal pipe in which the end of the pipe member is welded to the electrode lead inserted through the pipe member.
13. A light source device according to claim 3, wherein
the pipe member comprises a metal pipe in which the end of the pipe member is welded to the electrode lead inserted through the pipe member.
14. A light source device according to claim 5, wherein
the pipe member comprises a metal pipe in which the end of the pipe member is welded to the electrode lead inserted through the pipe member.