Abstract: 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?S1/S2?3.0, is satisfied where S1 denotes an area of a portion of the mount member in contact with the case and S2 denotes an area of the portion of the mount member in contact with a substrate of the LED module.

Abstract: A compact LED lamp (1) is provided with a holder (20), an LED module (10) mounted on the holder (20), and a globe (70) covering the LED module (10). The holder (20) has a groove (21) surrounding the LED module (10) at a top surface (24a) of the holder (20), with a rim (70a) of the globe (70) inserted in the groove (21). When comparing an edge (D1) and an edge (D2) along a side wall (24c) of the groove (21), the edge (D1) is closer to an opening of the groove, and the edge (D2) is closer to a bottom of the groove. The edge (D2) is more recessed than the edge (D1) in a direction perpendicular to a direction of depth of the groove. Furthermore, the groove (21) has through-holes (22) at part of a bottom surface (24d) of the groove (21) to connect to a back surface (24b) of the holder (20). The groove (21) and the through-holes (22) are filled with adhesive (80).

Abstract: A lamp comprises a light emitting module including a substrate and LEDs mounted on the substrate, a heat sink that is cylindrical and that discharges heat produced during light emission by the LEDs, a base provided at one end of the heat sink, a mounting member having a front surface whereon the light emitting module is mounted, and a circuit unit positioned partially in the heat sink, receiving power through the base and causing the light emitting element to emit light. The mounting member is in contact with the heat sink so that the heat produced during light emission is transmitted to the heat sink. The circuit unit includes a circuit board and a plurality of electronic components mounted on the circuit board. The circuit board or at least one of the electronic components is thermally connected to the mounting member through a thermally conductive member.

Abstract: 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 ?m to 500 ?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.

Abstract: 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?S1/S2?3.0, is satisfied where S1 denotes an area of a portion of the mount member in contact with the case and S2 denotes an area of the portion of the mount member in contact with a substrate of the LED module.

Abstract: 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?S1/S2?3.0, is satisfied where S1 denotes an area of a portion of the mount member in contact with the case and S2 denotes an area of the portion of the mount member in contact with a substrate of the LED module.

Abstract: One end of a cylindrical mount 10 is attached to an end of a cylindrical base 30 that is to be inserted into a socket of a lighting fixture. The end of the mount 10 is rotatable around a central axis of a base 30. A support 40 is attached to other end of the mount 10 so as to rotate integrally with the mount 10. An LED module 51 that includes a plurality of LED chips is attached to the support 40. An end face 43a, on which the LED module 51 is attached, is provided on the support 40. The end face 43a is formed so that the direction of light emitted by the LED chips provided on the LED module 51 is inclined at a predetermined angle with respect to the axial direction of the base 30.

Abstract: One end of a cylindrical mount 10 is attached to an end of a cylindrical base 30 that is to be inserted into a socket of a lighting fixture. The end of the mount 10 is rotatable around a central axis of a base 30. A support 40 is attached to other end of the mount 10 so as to rotate integrally with the mount 10. An LED module 51 that includes a plurality of LED chips is attached to the support 40. An end face 43a, on which the LED module 51 is attached, is provided on the support 40. The end face 43a is formed so that the direction of light emitted by the LED chips provided on the LED module 51 is inclined at a predetermined angle with respect to the axial direction of the base 30.

Abstract: A compact LED lamp (1) is provided with a holder (20), an LED module (10) mounted on the holder (20), and a globe (70) covering the LED module (10). The holder (20) has a groove (21) surrounding the LED module (10) at a top surface (24a) of the holder (20), with a rim (70a) of the globe (70) inserted in the groove (21). When comparing an edge (D1) and an edge (D2) along a side wall (24c) of the groove (21), the edge (D1) is closer to an opening of the groove, and the edge (D2) is closer to a bottom of the groove. The edge (D2) is more recessed than the edge (D1) in a direction perpendicular to a direction of depth of the groove. Furthermore, the groove (21) has through-holes (22) at part of a bottom surface (24d) of the groove (21) to connect to a back surface (24b) of the holder (20). The groove (21) and the through-holes (22) are filled with adhesive (80).

Abstract: A lamp capable of suppressing an increase in a temperature of semiconductor light-emitting devices such as LED is provided. The lamp includes an LED module (11) which is a light source, a radiator (14) thermally coupled to the light source, a lighting circuit (13) for turning the lighting source on and is housed in the radiator (14), and a base (12) for supplying power to the lighting circuit (13), and the radiator (14) includes a heat sink (15) covering the lighting circuit (13) and a light source attachment (16) to which the light source is placed. Furthermore, a convex (16b) of an end portion of the light source attachment (16) is fit into a recess (15c) of the heat sink (15).

Abstract: 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 ?m to 500 ?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.

Abstract: 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?S1/S2?3.0, is satisfied where S1 denotes an area of a portion of the mount member in contact with the case and S2 denotes an area of the portion of the mount member in contact with a substrate of the LED module.

Abstract: Provided is a bulb-type lamp including a lightweight housing with great handleability. An LED light bulb (1) comprises: an LED module (3) on which LEDs are mounted; a cylindrically-shaped case (7) having openings at both ends, which are first and second ends; a mount member (5) on a front surface of which the LED module (3) is mounted, the mount member (5) closing a corresponding one of the openings of the case (7) by being in contact with an inner circumferential surface of the first end of the case (7); a base member (91) attached to the second end of the case (7); and a lighting circuit (11) that is disposed inside the case (7). A wall thickness of the case (7) is in a range of 200 ?m to 500 ?m inclusive, and the wall thickness of at least one portion of the case (7) decreases from the first end toward the second end of the case (7).

Abstract: 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?S1/S2, is satisfied where S1 denotes an area of a portion of the mount member in contact with the case and S2 denotes an area of the portion of the mount member in contact with a substrate of the LED module.