Abstract:
THE PRESENT INVENTION PROVIDES A MERCURY-FREE METAL HALIDE LAMP WITH AN INCREASED LAMP OPERATING VOLTAGE AND PROLONGED LAMP LIFE WITHOUT ENCLOSING MERCURY OR EXCESSIVELY INCREASING AN INNER PRESSUREOF AN ARC TUBE. A LAMP IN ACCORDANCE WITH THE PRESENT INVENTION CONTAINS, AS A CONTENT OF A FILL MATERIAL 202, 0.04 MG OF SCL3, 0.21 MG OF NAL, 7 ATM OF XE AT ROOM TEMPERATURE, AND 0.1 MG OF YI3, WHICH IS AN IODIDE OF Y, Y HAVING AN IONIZATION POTENTIAL AS A SIMPLE SUBSTANCE BEING 5 TO 10 EV AND VAPOR PRESSURE AT A TEMPERATURE OF LAMP OPERATION BEING 10-5 OR HIGHER.
Abstract:
The present invention provides a high-pressure discharge lamp 100 including a luminous bulb 10 enclosing at least a rare gas and halogen in the bulb and made substantially of quartz glass; and an electrode 12 made substantially of tungsten and disposed in the luminous bulb. The mole number of the halogen is larger than the sum of the total mole number of metal elements (except the tungsten element and the mercury element) that have the property of bonding to the halogen and are present in the luminous bulb 10 and the mole number of the tungsten present in the luminous bulb by evaporation from the electrode 12 during lamp operation.
Abstract:
The present invention provides a mercury-free metal halide lamp with an increased lamp operating voltage and prolonged lamp life without enclosing mercury or excessively increasing an inner pressure of an arc tube. A lamp in accordance with the present invention contains, as a content of a fill material 202, 0.04 mg of ScI3, 0.21 mg of NaI, 7 atm of Xe at room temperature, and 0.1 mg of YI3, which is an iodide of Y, Y having an ionization potential as a simple substance being 5 to 10 eV and a vapor pressure at a temperature of lamp operation being 10 or higher.
Abstract:
[PROBLEM TO BE SOLVED] To provide a bulb-type lamp that can achieve improvement in the heat dissipation properties and size/weight reduction simultaneously, and that can lighten thermal load on a lighting circuit. [SOLUTION] A bulb-type lamp 1 is composed of: an LED module 3 including LEDs; a cylindrically-shaped case 7, to one end of which a base member 15 is attached and which allows dissipation of heat therefrom, the heat being generated by the LEDs emitting light; a mount member 5, on which the LED module 3 is mounted, which closes the other end of the case 7, and allows conduction of the heat to the case 7; a lighting circuit 11 that, upon receiving power via the base member 15, causes the LEDs to emit light; and a circuit holder 13 positioned inside the case 7, with the lighting circuit 11 disposed inside the circuit holder 13. The air space exists between the circuit holder 13 and the case7, and between the circuit holder 13 and the mount member 5. Hence, the lighting circuit 11 is isolated from the air space due to the presence of the circuit holder 13. In the bulb-type lamp 1, a fraction S1/S2 satisfies a relationship 0.5 ‰¤ S1/S2, where S1 denotes an area of a portion of the mount member 5 that is in contact with the case 7, and S2 denotes an area of a portion of the mount member 5 that is in contact with a substrate 17 of the LED module 3.
Abstract:
PROBLEM TO BE SOLVED: To provide a bulb-shaped lamp capable of achieving improvement in heat radiation, down-sizing and weight reduction simultaneously, and capable of decreasing a heat load to a lighting circuit. SOLUTION: The bulb-shaped lamp 1 includes: an LED module 3 having LEDs; a cylindrical case 7 having a base member 15 at one end and radiating heat when the LEDs emit light; a mounting member 5 mounting the LED module 3, closing the other end of the case 7 and transmitting the heat to the case 7; and a lighting circuit 11 to make the LEDs emit light after receiving power through the base member 15. When a contact area between the mounting member 5 and the case 7 is S1 and a contact area between a substrate 17 of the LED module 3 and the mounting member 5 is S2, a ratio S1/S2 of the contact areas satisfies 0.5≤S1/S2. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide easily a lamp satisfying a user's requirement of a beam angle to meet a purpose or the like of using the lamp and having various beam angles. SOLUTION: The lamp 651 includes: an LED module 653 with LED elements mounted on a substrate; a cylindrical case (a heat sink) 655 radiating heat when the LEDs emit light; a base member arranged on one end side of the case 655; and a mounting member (a heat conductive member) 654 mounting the LED module 653 on its surface, closing the other end opening of the case 655 and transmitting the heat generated when the LEDs emit light to the case 655. The mounting surface position of the LEDs against a virtual end face made by the end edge of the other end opening side of the case 655 is so determined as to meet the beam angle. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a bulb-shaped lamp capable of achieving improvement in heat radiation, down-sizing and weight reduction simultaneously, and capable of decreasing a heat load to a lighting circuit. SOLUTION: The bulb-shaped lamp 1 includes: an LED module 3 having LEDs; a cylindrical case 7 having a base member 15 at one end and radiating heat when the LEDs emit light; a mounting member 5 mounting the LED module 3, closing the other end of the case 7 and transmitting the heat to the case 7; and a lighting circuit 11 to make the LEDs emit light after receiving power through the base member 15. The case 7 has a stopper 48 on an inner peripheral face of the other end side, and the mounting member 5 is inserted from the other end opening of the case 7 up to a position determined by the stopper 48. When a contact area between the mounting member 5 and the case 7 is S1, and a contact area between a substrate 17 of the LED module 3 and the mounting member 5 is S2, a ratio S1/S2 of the contact areas satisfies 0.5≤S1/S2. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a bulb-shaped lamp capable of achieving improvement in heat radiation, down-sizing and weight reduction simultaneously, and capable of decreasing a heat load to a lighting circuit. SOLUTION: The bulb-shaped lamp 1 includes: an LED module 3 having LEDs; a cylindrical case 7 having a base member 15 at one end and radiating heat when the LEDs emit light; a mounting member 5 mounting the LED module 3, closing the other end of the case 7 and transmitting the heat to the case 7; and a lighting circuit 11 to make the LEDs emit light after receiving power through the base member 15. The LED module 3 is mounted on a small diameter part side of the mounting member 5 and moreover an outer peripheral face of a large diameter part contacts with an inner peripheral face of the case 7. When a contact area between the mounting member 5 and the case 7 is S1 and a contact area between a substrate 17 of the LED module 3 and the mounting member 5 is S2, a ratio S1/S2 of the contact areas satisfies 0.5≤S1/S2. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a bulb-shaped lamp capable of achieving improvement in heat radiation, down-sizing and weight reduction simultaneously, and capable of decreasing a heat load to a lighting circuit. SOLUTION: The bulb-shaped lamp 1 includes: an LED module 3 having LEDs; a cylindrical case 7 having a base member 15 at one end and radiating heat when the LEDs emit light; a mounting member 5 mounting the LED module 3, closing the other end of the case 7 and transmitting the heat to the case 7; and a lighting circuit 11 to make the LEDs emit light after receiving power through the base member 15. The mounting member 5 is inserted from the other end opening of the case 7 and is structured so that a side face part of the mounting member 5 may contact with an inner peripheral face of the case so as to transmit the heat at the time of emitting light to the case 7, and when a contact area between the mounting member 5 and the case 7 is S1 and a contact area between a substrate 17 of the LED module 3 and the mounting member 5 is S2, a ratio S1/S2 of the contact areas satisfies 0.5≤S1/S2. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide easily a lamp satisfying a user's requirement of a beam angle to meet a purpose or the like of using the lamp and having various beam angles. SOLUTION: The lamp 651 includes: an LED module 653 with LED elements mounted on a substrate; a cylindrical case (a heat sink) 655 radiating heat when the LEDs emit light; a base member arranged on one end side of the case 655; and a mounting member (a heat conductive member) 654 mounting the LED module 653 on its surface, closing the other end opening of the case 655 and transmitting the heat generated when the LEDs emit light to the case 655. The mounting surface position of the LEDs against a virtual end face made by the end edge of the other end opening side of the case 655 is so determined as to meet the beam angle. COPYRIGHT: (C)2011,JPO&INPIT