Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Yasushige Tomiyoshi

Kenji Takahashi

Yutaka Murakami

Hideo Nagai

Nobuyuki Matsui

Takaari Uemoto

Tetsushi Tamura

Kenzi Takahasi

Mamoru Takeda

Tatsumi Setomoto

Yoshio Manabe

Haruhiko Uneo

Akira Taniuchi

Satoshi Shida

Nobuyuki Mase

Yuji Hosoda

Tomonari Hashimoto

A bulb-type lamp having both heat dissipation and size/weight reduction properties with a lower thermal load on a lighting circuit. An LED module is mounted in a case with a base member to allow dissipation of heat. An LED mount member closes another end of the case and allows conduction of heat to the case. A lighting circuit receives power via the base member. The lighting circuit is disposed inside a circuit holder. An air space exists between the circuit holder and both the case and the mount member. The lighting circuit is isolated from the air space by the circuit holder. A relationship 0.5&#x2266;S/S&#x2266;3.0, is satisfied where Sdenotes an area of a portion of the mount member in contact with the case and Sdenotes an area of the portion of the mount member in contact with a substrate of the LED module.

Bulb-shaped lamp and lighting device

Light-emitting diode lamp

A compact LED lamp () is provided with a holder (), an LED module () mounted on the holder (), and a globe () covering the LED module (). The holder () has a groove () surrounding the LED module () at a top surface () of the holder (), with a rim () of the globe () inserted in the groove (). When comparing an edge (D) and an edge (D) along a side wall () of the groove (), the edge (D) is closer to an opening of the groove, and the edge (D) is closer to a bottom of the groove. The edge (D) is more recessed than the edge (D) in a direction perpendicular to a direction of depth of the groove. Furthermore, the groove () has through-holes () at part of a bottom surface () of the groove () to connect to a back surface () of the holder (). The groove () and the through-holes () are filled with adhesive ().

Lighting device

Provided is a bulb-type lamp including a lightweight housing with great handleability. An LED light bulb comprises: an LED module on which LEDs are mounted; a cylindrically-shaped case having openings at both ends, which are first and second ends; a mount member on a front surface of which the LED module is mounted, the mount member closing a corresponding one of the openings of the case by being in contact with an inner circumferential surface of the first end of the case; a base member attached to the second end of the case; and a lighting circuit that is disposed inside the case. A wall thickness of the case is in a range of 200 &#x3bc;m to 500 &#x3bc;m inclusive, and the wall thickness of at least one portion of the case decreases from the first end toward the second end of the case.

Bulb-type lamp and lighting device

One end of a cylindrical mountis attached to an end of a cylindrical basethat is to be inserted into a socket of a lighting fixture. The end of the mountis rotatable around a central axis of a base. A supportis attached to other end of the mountso as to rotate integrally with the mount. An LED modulethat includes a plurality of LED chips is attached to the support. An end face, on which the LED moduleis attached, is provided on the support. The end faceis formed so that the direction of light emitted by the LED chips provided on the LED moduleis inclined at a predetermined angle with respect to the axial direction of the base

Bulb-shaped lamp

Provided is a bulb-type lamp including a lightweight housing with great handleability. An LED light bulb () comprises: an LED module () on which LEDs are mounted; a cylindrically-shaped case () having openings at both ends, which are first and second ends; a mount member () on a front surface of which the LED module () is mounted, the mount member () closing a corresponding one of the openings of the case () by being in contact with an inner circumferential surface of the first end of the case (); a base member () attached to the second end of the case (); and a lighting circuit () that is disposed inside the case (). A wall thickness of the case () is in a range of 200 &#x3bc;m to 500 &#x3bc;m inclusive, and the wall thickness of at least one portion of the case () decreases from the first end toward the second end of the case ().

A bulb-type lamp having both heat dissipation and size/weight reduction properties with a lower thermal load on a lighting circuit. An LED module is mounted in a case with a base member to allow dissipation of heat. An LED mount member closes another end of the case and allows conduction of heat to the case. A lighting circuit receives power via the base member. The lighting circuit is disposed inside a circuit holder. An air space exists between the circuit holder and both the case and the mount member. The lighting circuit is isolated from the air space by the circuit holder. A relationship 0.5&#x2266;S/S, is satisfied where Sdenotes an area of a portion of the mount member in contact with the case and Sdenotes an area of the portion of the mount member in contact with a substrate of the LED module.

Light emitting diode lamp

Growing community of inventors

Osaka, Japan

Yasushige Tomiyoshi