1. A method of manufacturing a plate-like spacer in a display panel which supports opposing upper and lower substrates of the display panel in a vacuum space and has in its surface a plurality of grooves, the method comprising the steps of:
subjecting a plate-like glass base material having in its surface a plurality of grooves to heat drawing in a direction parallel to the grooves; and
cutting the glass base material after the heat drawing, with irradiation of a laser beam condensed to have a thin and narrow elongated pattern on the surface of the glass base material from a direction perpendicular to the surface having the grooves of the glass base material, the thin and narrow elongated pattern extending across the grooves and beyond the width of the drawn glass base material in the elongated direction, wherein
in the step of cutting the glass base material, with an irradiation region of the glass base material irradiated with the laser beam being molten, one side portion of the glass base material with respect to the irradiation region is fixed, and the other side portion of the glass base material is pulled to thereby tear off the other side portion from the one side portion of the glass base material which becomes the spacer.
2. A method of manufacturing a display apparatus, the method comprising the steps of:
subjecting a plate-like glass material having in its surface a plurality of grooves to heat drawing in a direction parallel to the grooves; and
cutting the glass base material after the heat drawing, with irradiation of a laser beam condensed to have a thin and narrow elongated pattern on the surface of the glass base material from a direction perpendicular to the surface having the grooves of the glass base material, the thin and narrow elongated pattern extending across the grooves and beyond the width of the drawn glass base material in the elongated direction, wherein
in the step of cutting the glass base material, with an irradiation region of the glass base material irradiated with the laser beam being molten, one side portion of the glass base material with respect to the irradiation region is fixed, and the other side portion of the glass base material is pulled to thereby tear off the other side portion from the one side portion of the glass material; and
arranging the one side portion fixed at the cutting step and cut from the glass base material as a spacer between a first substrate having an electron-emitting device and a second substrate having a light emitting member that emits light through irradiation with electrons emitted from the electron-emitting device.
3. A method according to claim 1, wherein in the step of cutting the glass base material, the grooves do not extend to an end portion of the spacer.
4. A method according to claim 1, wherein in the step of cutting the glass base material, an end portion of the spacer is rounded.
5. A method according to claim 2, wherein in the step of cutting the glass base material, the grooves do not extend to an end portion of the spacer.
6. A method according to claim 2, wherein in the step of cutting the glass base material, an end portion of the spacer is rounded.
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 streetlight comprising:
a head having a main socket therein for supplying a power to the lamp assembly;
a pillar for supporting the head;
a ballast for applying a starting voltage to the main socket mounted into the head; and
the lamp assembly comprising a case as a body having a main plug for inserting into the main socket formed at one side of the case, a distribution socket for electrically connecting to the main plug formed at another side of the case, and a space formed at an inside thereof, and a xenon lamp for inserting into the distribution socket.
2. A streetlight comprising:
a head having a main socket therein for supplying a power to the lamp assembly;
a pillar for supporting the head; and
the lamp assembly comprising a case as a body having a main plug for inserting into the main socket formed at one side of the case, a distribution socket for electrically connecting to the main plug formed at another side of the case, and a space formed at an inside thereof, a xenon lamp for inserting into the distribution socket, and a ballast for receiving a voltage from the main plug and applying a starting voltage to the main socket located in the space.
3. A streetlight comprising:
a head having a main socket therein for supplying a power to the lamp assembly;
a pillar for supporting the head; and
the lamp assembly comprising a case as a body having a main plug for inserting into the main socket formed at one side of the case, a plurality of distribution sockets for electrically connecting to the main plug formed at another side of the case, and a space formed at an inside thereof, a xenon lamp for inserting into the distribution sockets, and a ballast for receiving a voltage from the main plug and applying a starting voltage to the main sockets located in the space.
4. A streetlight as claimed in claim 3, wherein the lamp assembly further comprises a switching portion for supplying a power to each ballast through the main plug or breaking the power formed at the space of the case.
5. A streetlight as claimed in claim 4, wherein the lamp assembly further comprises a detecting portion for detecting an operating status of the xenon lamp formed at the space of the case and a controller electrically connected to the switching portion, the controller serving to control the switching portion so as to immediately operate another xenon lamp when the controller receives a trouble signal of the operating xenon lamp from the detecting portion.
6. A streetlight as claimed in claim 1, wherein a coloring agent is coated on the inside of a jacket or a colored glass pipe is inserted into a jacket, thereby emitting a desiring color.
7. A streetlight as claimed in claim 1, wherein the xenon lamp is a mercury-free lamp.
8. A streetlight as claimed in claim 2, wherein a coloring agent is coated on the inside of a jacket or a colored glass pipe is inserted into a jacket, thereby emitting a desiring color.
9. A streetlight as claimed in claim 2, wherein the xenon lamp is a mercury-free lamp.
10. A streetlight as claimed in claim 3, wherein a coloring agent is coated on the inside of a jacket or a colored glass pipe is inserted into a jacket, thereby emitting a desiring color.
11. A streetlight as claimed in claim 3, wherein the xenon lamp is a mercury-free lamp.