Lamp having outer shell to radiate heat of light source
First Claim
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1. A lamp configured to be installable in a lamp socket, the lamp comprising:
- a shell with heat conductivity, the shell including;
a light source support provided at one end of the shell,a peripheral wall extending from the light source support to another end of the shell, the peripheral wall having a shape whose outer diameter reduces from the one end of the shell to the other end of the shell, the peripheral wall including a heat radiating surface exposed to an exterior of the lamp, anda receptacle provided inside the peripheral wall and having an open end on an opposite side of the light source support;
a heat generating light source supported on the light source support;
a lighting circuit configured to light the light source, the lighting circuit disposed in the receptacle and having a circuit board on which circuit components are mounted;
a translucent cover provided on the shell so as to cover the light source;
a base comprising;
a metal base shell configured to be installable in and directly contact the lamp socket to supply a current from the lamp socket to the lighting circuit; and
a connecting member having electrical insulation, the connecting member physically separating the metal base shell from the heat conductive shell and being fixed to the metal base shell,wherein the connecting member further comprises a distal end on which an engaging portion is formed, wherein the connecting member is configured to be connected to the heat conductive shell by fitting the distal end inside the open end of the receptacle and inserting, in a radial direction, the engaging portion into a groove defined on an interior surface of the heat conductive shell,wherein the connecting member separates the metal base shell and the heat conductive shell such that the heat conductive shell does not directly contact the lamp socket when the metal base shell is installed in the lamp socket,wherein the heat conductive shell is not configured to supply current from the lamp socket to the lighting circuit,wherein the receptacle extends into the connecting member, andwherein the peripheral wall is configured such that a thickness of the peripheral wall decreases from the one end of the shell to the other end of the shell.
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Abstract
A lamp includes an outer shell having heat conductivity, a base provided in the outer shell, and a cover provided in the outer shell. The outer shell has a light source support, and a heat radiating surface exposed to the outside of the outer shell. The light source support is formed integral with the heat radiating surface. A light source is supported on the light source support. The light source is heated during lighting, and thermally connected to the light source support. The light source is covered with the cover.
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Citations
4 Claims
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1. A lamp configured to be installable in a lamp socket, the lamp comprising:
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a shell with heat conductivity, the shell including; a light source support provided at one end of the shell, a peripheral wall extending from the light source support to another end of the shell, the peripheral wall having a shape whose outer diameter reduces from the one end of the shell to the other end of the shell, the peripheral wall including a heat radiating surface exposed to an exterior of the lamp, and a receptacle provided inside the peripheral wall and having an open end on an opposite side of the light source support; a heat generating light source supported on the light source support; a lighting circuit configured to light the light source, the lighting circuit disposed in the receptacle and having a circuit board on which circuit components are mounted; a translucent cover provided on the shell so as to cover the light source; a base comprising; a metal base shell configured to be installable in and directly contact the lamp socket to supply a current from the lamp socket to the lighting circuit; and a connecting member having electrical insulation, the connecting member physically separating the metal base shell from the heat conductive shell and being fixed to the metal base shell, wherein the connecting member further comprises a distal end on which an engaging portion is formed, wherein the connecting member is configured to be connected to the heat conductive shell by fitting the distal end inside the open end of the receptacle and inserting, in a radial direction, the engaging portion into a groove defined on an interior surface of the heat conductive shell, wherein the connecting member separates the metal base shell and the heat conductive shell such that the heat conductive shell does not directly contact the lamp socket when the metal base shell is installed in the lamp socket, wherein the heat conductive shell is not configured to supply current from the lamp socket to the lighting circuit, wherein the receptacle extends into the connecting member, and wherein the peripheral wall is configured such that a thickness of the peripheral wall decreases from the one end of the shell to the other end of the shell.
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2. A lighting device comprising:
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a shell having heat conductivity and including;
a light source support provided at one end of the shell, a peripheral wall extending from the light source support to another end of the shell, the peripheral wall having a shape whose outer diameter reduces from the one end of the shell to the other end of the shell and having an heat radiating surface exposed to an exterior of the lighting device, and a receptacle provided inside the peripheral wall and having an open end on the opposite side of the light source support;a heat generating light source supported on the light source support; a base portion including; a metal base shell configured to directly contact a lamp socket to supply a current from the lamp socket to heat generating light source; and a connecting member having electrical insulation and physically separating the metal base shell from the heat conductive shell, the connecting member being fixed to the base portion at one end and having an engaging portion at another end, wherein the engaging portion is configured to be inserted into, in a radial direction, a groove defined on an interior surface of the receptacle, wherein the connecting member separates the metal base shell and the heat conductive shell such that the heat conductive shell does not directly contact the lamp socket when the metal base shell is installed in the lamp socket, wherein the heat conductive shell is not configured to supply power to the heat generating light source, wherein the receptacle extends into the base portion, and wherein the peripheral wall is configured such that a thickness of the peripheral wall decreases from the one end of the shell to the other end of the shell.
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3. A lamp configured to be installable in a lamp socket, the lamp comprising:
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a shell with heat conductivity which includes a light source support, a receptacle having an open end on the opposite side of the light source support, and an end wall partitioning the light source support and the receptacle; a heat generating light source supported on the light source support; a lighting circuit configured to light the light source, the lighting circuit disposed in the receptacle and having a circuit board on which circuit components are mounted; an electrical insulating layer interposed between a portion of the receptacle and the lighting circuit, wherein a heat shielding gap is provided between the end wall and the electrical insulating layer; a translucent cover provided on the shell so as to cover the light source; and a base comprising a metal base shell configured to be installable in and directly contact the lamp socket to supply a current from the lamp socket to the lighting circuit and a connecting member having electrical insulation, being fixed to the metal base shell, and having a distal end on which an engaging portion is formed, wherein the base is connected to the shell by fitting, in a radial direction, the engaging portion formed on the distal end of the connecting member into a groove defined in a surface of the receptacle, wherein the metal base shell is physically separate from the shell, and wherein the lamp is configured such that the shell does not directly contact the lamp socket when the lamp is installed in the lamp socket. - View Dependent Claims (4)
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Specification