JP2011159628A - Lighting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting device capable of improving heat radiation of a lamp. <P>SOLUTION: A metal lamp enclosure member 21 of the lamp 12 sticks to a metal socket enclosure member 59 of a socket 13 by making a base 28 of the lamp 12 electrically connected to a socket section 52 of the socket 13. Heat of a light-emitting diode element 32 of the lamp 12 is radiated in air from the lamp enclosure member 21, and radiated by transmission from the lamp enclosure member 21 to the socket enclosure member 59. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an illumination device using a socket for connecting a lamp.

  2. Description of the Related Art Conventionally, in a lighting device using a light bulb, a lamp base is electrically connected to a socket and mechanically held by screwing and attaching a light bulb base to a socket disposed in a fixture body. (For example, refer to Patent Document 1).

In addition, a light bulb shaped lamp using a light emitting diode element as a light source and having a base that can be screwed into a socket like a light bulb is known. In this light bulb shaped lamp, a metal outer part is used to suppress the temperature rise of the light emitting diode element, a base is arranged in an insulated state at one end side of the outer part, and the outer part is arranged at the other end side of the outer part. A plurality of light emitting diode elements are arranged in thermal connection. And the heat | fever at the time of lighting of a light emitting diode element is transmitted to an outer part, and it heat-radiates from this outer part in the air, The temperature rise of a light emitting diode element is suppressed (for example, refer patent document 2).
Japanese Unexamined Patent Publication No. 2003-45205 (second page, FIG. 1 and FIG. 4) Japanese Patent Laid-Open No. 2001-243809 (page 2-3, FIG. 1)

  In a conventional lighting device using a light bulb shaped lamp, since heat dissipation is considered only by the lamp alone, a structure in which heat generated by the light emitting diode element is radiated from the metal outer portion to the air is adopted. However, if the surface area of the outer portion is not made relatively large, sufficient heat dissipation to the air cannot be obtained, and it is difficult to reduce the size of the bulb-type lamp, or more power is supplied to one bulb-type lamp. Therefore, there is a problem that it is difficult to increase the light output.

  In addition, since it is a heat dissipation structure from the outer part to the air only, for example, in the case of an instrument structure that covers a light bulb shaped lamp with a glove, a sufficient heat dissipation effect cannot be obtained due to the temperature rise of the air in the glove. There is a problem that it is difficult to apply the light bulb shaped lamp in the structure.

  This invention is made | formed in view of such a point, and it aims at providing the illuminating device which can improve the heat dissipation of a lamp | ramp.

  The lighting device according to claim 1 is electrically connected to a metal outer part, a base provided in an insulated state with respect to the outer part, and a base of a lamp having a light source supported by the outer part. And a metal heat conduction part to which the outer part of the lamp comes into close contact with the socket base connected to the socket base.

  The outer portion of the lamp may be formed of a metal such as aluminum having excellent thermal conductivity, and may constitute a part or most of the outer portion of the lamp. Further, the base is provided in an insulated state with respect to the outer portion through an insulating member or the like, and is provided in a cylindrical shell that is screwed and connected to the socket portion, and is provided in an insulated state on the front end side of the shell. Has eyelets. Further, as the light source, a point light source including a light emitting element such as a light emitting diode element may be used, and a fluorescent lamp or the like may be used. In the case of a point light source, the light source can be thermally connected to the outer portion by placing the point light source on a metal substrate such as aluminum having excellent thermal conductivity and bringing the substrate into contact with the outer portion. . The lamp may be a reflector that reflects light from the light source, a globe that covers the light source, or the like.

  The socket portion of the socket includes a metal receiver to which a shell of the base is screwed and connected, a terminal plate connected to an eyelet of the base. Moreover, it is preferable that a heat conductive part is formed with metals, such as aluminum which was excellent in heat conductivity, for example, and enables heat transfer by contacting the instrument main body etc. of an illuminating device.

  According to a second aspect of the present invention, in the socket according to the first aspect, the heat conducting portion is provided so as to be movable along the axial direction of the socket portion with respect to the socket portion, and the socket by the urging means. It is urged | biased toward the direction which protrudes from a part.

  The biasing means may be an elastic body such as a coil spring, a leaf spring, or rubber.

  A lighting device according to claim 3 is a metal outer portion, a base provided in an insulated state with respect to the outer portion, and a lamp having a light source supported by the outer portion; A socket part to be connected in general; and a metal heat conduction part in which the outer part of the lamp is in close contact with the socket base connected to the socket base.

  According to the lighting device socket of claim 1, by electrically connecting the lamp base to the socket portion of the socket, the metal outer portion of the lamp is in close contact with the heat conducting portion, and the heat of the light source of the lamp is increased. Not only heat radiation from the outer portion to the air but also heat can be transmitted from the outer portion to the heat conducting portion side, and the heat dissipation of the lamp can be improved. Further, since the outer portion of the lamp is in close contact with the heat conducting portion, the lamp can be securely held in the socket.

  According to the socket of the second aspect, in addition to the effect of the socket of the first aspect, the heat conducting portion is provided movably along the axial direction of the socket portion with respect to the socket portion, and the socket is provided by the biasing means. Since it urges | biass toward the direction which protrudes from a part, a heat conductive part can be pressed against the outer part of the lamp | ramp connected to the socket part, and can be made to adhere | attach reliably.

  According to the illuminating device of the third aspect, since the outer portion of the lamp is in close contact with the heat conducting portion of the socket, the heat dissipation of the lamp can be improved and the lamp can be securely held in the socket.

It is sectional drawing of the illuminating device which shows the 1st Embodiment of this invention. It is a front view of an illuminating device same as the above. It is sectional drawing of the illuminating device which shows 2nd Embodiment. It is sectional drawing of the illuminating device which shows 3rd Embodiment.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  1 and 2 show a first embodiment. FIG. 1 is a cross-sectional view of a lighting device, and FIG. 2 is a front view of the lighting device.

  The lighting device 11 includes a lamp 12 and a socket 13 for connecting the lamp 12.

  The lamp 12 includes a lamp outer member 21 as an outer portion that is a cylindrical lamp body formed of a metal material having excellent thermal conductivity such as aluminum. In the lamp outer member 21, recesses 24 and 25 are respectively formed on the one end surface 22 side and the other end surface 23 side in the axial direction, and a partition portion 26 is formed between the recesses 24 and 25 at both ends.

  An annular insulating bush 27 is attached to the recess 24 on one end side of the lamp shell member 21, and a base 28 is disposed through the insulating bush 27. The base 28 has a cylindrical shell 29 made of metal and formed with a helical thread, and an eyelet 31 formed at the center top via an insulating portion 30 on the distal end side of the shell 29.

  In the recess 25 on the other end side of the lamp outer member 21, a light source unit 33 using a light emitting diode element 32 as a light emitting element as a point light source as a light source is disposed. The light source unit 33 accommodates a substrate 34 on which the light emitting diode element 32 is disposed, a lens 35 that controls light emitted from the light emitting diode element 32, and a lens holding portion 36 that holds the lens 35.

  The light emitting diode element 32 is a chip-like light emitting diode element that emits visible light, and may be, for example, a combination of a blue light emitting diode element or an ultraviolet light emitting diode element and a phosphor that emits visible light when excited by the emitted light. .

  The substrate 34 is formed in a disk shape with a metal material having excellent thermal conductivity such as aluminum, and a light emitting diode element 32 is disposed in the center of the other surface of the substrate 34, and the light emitting diode element. A pair of lead wires 37 and 38 connected to 32 are drawn out from one surface of the substrate 34. The pair of lead wires 37 and 38 are inserted into the base 28 through the insertion hole 39 formed in the center of the partition plate 26, and one lead wire 37 is electrically connected to the shell 29, and the other A lead wire 38 is electrically connected to the eyelet 31.

  The lens 35 is formed of a light-transmitting resin material such as polycarbonate or acrylic resin, for example, an incident surface 40 on which light emitted from the light-emitting diode element 32 is incident, and a reflective surface 41 that reflects incident light in the emission direction. The light emitting surface 42 from which light is emitted is formed in a circular shape when viewed from the light emitting surface 42 side. A flange portion 43 is formed so as to protrude from the peripheral portion on the emission surface 42 side.

  The lens holding portion 36 is formed in a cylindrical shape having a housing portion 44 for housing the lens 35, and a groove portion 45 in which the flange portion 43 of the lens 35 is fitted is formed on the inner peripheral portion of the housing portion 44.

  Then, the lens holding part 36 holding the substrate 34 and the lens 35 is inserted into the recess 25 of the lamp outer member 21 in this order, and a screw 46 inserted into the partition part 26 from the one end surface 22 of the lamp outer member 21 is inserted into the lens holding part 36. The lamp outer member 21, the substrate 34, and the lens holding part 36 are integrally fastened by screwing. Therefore, one surface of the substrate 34 is in close contact with the partition portion 26 of the lamp outer member 21 in a state of surface contact.

  The socket 13 has a socket body 51 which is a socket body having a diameter larger than the outer diameter of the lamp outer member 21 of the lamp 12 and formed in an annular shape with an insulating material such as synthetic resin.

  A socket 52 to which the base 28 of the lamp 12 is connected is provided at the center of the socket body 51. The socket part 52 is disposed at the central opening of the socket body 51 and is connected to a shell 53 to which the shell 29 of the base 28 is screwed. A terminal plate 54 to which the eyelet 31 is abutted and connected is provided. The metal receiver 53 and the terminal board 54 are fastened and fixed to the back surface of the socket body 51 with screws 55 and 56, respectively. Power supply lead wires 57 and 58 are connected to the screws 55 and 56, respectively.

  A socket outer member 59 as a heat conducting portion is arranged so as to cover the front surface side and the peripheral surface, which are the other end surfaces of the socket body 51. The socket outer member 59 is formed of a metal material having excellent thermal conductivity such as aluminum, for example, and is disposed on the disk-shaped end surface portion 60 disposed on the surface of the socket body 51 and the peripheral surface of the socket body 51. An opening 62 is formed in the center of the end surface portion 60 so that the socket portion 52 faces and the base 28 of the lamp 12 is inserted.

  A pair of mounting holes 63 are formed on the end surface portion 60 of the socket outer member 59 at positions different from the positions of the screws 55 and 56 of the socket body 51 at an outer diameter position from the opening, and are inserted into the mounting holes 63. The socket 64 can be attached by the screw 64 passing through the socket main body 51 and screwed to an installation surface such as a fixture main body or a wall surface of the lighting device 11. Each screw 64 is a countersunk screw or the like, and is configured such that the screw head does not protrude from the end surface portion 60 of the socket outer member 59.

  And in this illuminating device 11, the socket 13 is attached to installation surfaces, such as an instrument main body and a wall surface, and the end surface of the peripheral surface part 61 of the socket outer member 59, etc. contact an installation surface.

  In order to connect the lamp 12 to the socket 13, the lamp 12 is screwed in while inserting and fitting the base 28 of the lamp 12 into the socket 53 of the socket 52 through the opening 62 of the socket outer member 59 of the socket 13. By operating it, the shell 29 of the base 28 is screwed into the base 53. With this screwing, the eyelet 31 of the base 28 comes into contact with the terminal plate 54, and the screwing is further continued while the terminal plate 54 is elastically deformed.

  Further, by continuing the screwing, the one end surface 22 which is the lamp side close contact surface of the lamp outer member 21 comes into surface contact with the end surface portion 60 which is the socket side close contact surface of the socket outer member 59, and is tightened by the tightening force by screwing. One end surface 22 of the lamp outer member 21 is in close contact with the end surface portion 60 of the socket outer member 59.

  When the lamp 12 is turned on, heat generated by the light emitting diode element 32 is transmitted to the substrate 34, transmitted from the substrate 34 to the lamp outer member 21, and radiated from the outer surface of the lamp outer member 21 to the air. The light is transmitted from the lamp outer member 21 to the socket outer member 59 in close contact therewith. The heat transmitted to the socket outer member 59 is dissipated from the outer surface of the socket outer member 59 into the air, and is also transmitted to the appliance main body or wall surface, which is an installation surface with which the socket outer member 59 is in contact, for heat dissipation.

  In this way, by electrically connecting the base 28 of the lamp 12 to the socket portion 52 of the socket 13, the metal lamp outer member 21 of the lamp 12 is in close contact with the metal socket outer member 59 of the socket 13, The heat of the light emitting diode element 32 of the lamp 12 can be dissipated from the lamp outer member 21 into the air, and can be transmitted from the lamp outer member 21 to the socket 13 side to dissipate heat, so that the heat dissipation of the lamp 12 can be improved. Therefore, the lamp 12 can be downsized.

  Further, since the lamp outer member 21 of the lamp 12 is in close contact with the socket outer member 59 of the socket 13, the lamp 12 can be firmly held in the socket 13, and the lamp 12 can be prevented from loosening due to vibration or the like.

  In addition, the lamp outer member 21 of the lamp 12 and the socket outer member 59 of the socket 13 are in close contact with each other on a plane that intersects the axial direction of the socket portion 52, that is, a plane that is perpendicular to each other. it can.

  Next, FIG. 3 shows a second embodiment, and FIG. 3 is a sectional view of the lighting device.

  The socket outer member 59 of the socket 13 is movable along the axial direction of the socket portion 52 with respect to the socket body 51. In this case, a long hole 71 is formed along the axial direction in the peripheral surface portion 61 of the socket outer member 59, and a pin 72 that engages with the long hole 71 is provided in the socket body 51, whereby the socket of the socket outer member 59 is provided. The rotation of the main body 51 is prevented and the movement range is restricted.

  Between the socket outer member 59 and the socket main body 51, a spring 73 is disposed as an urging means for urging the socket outer member 59 in a direction protruding from the socket main body 51.

  According to this configuration, the socket outer member 59 can be pressed firmly with the spring 73 against the lamp outer member 21 of the lamp 12 in which the base 28 is electrically connected to the socket portion 52, and can be surely adhered.

  Next, FIG. 4 shows a third embodiment, and FIG. 4 is a sectional view of the lighting device.

  The lamp 12 includes an outer lamp outer member 21 having a small diameter at one end, a cover 81 attached to one end of the lamp outer member 21, a base 28 attached via the cover 81, and the lamp outer member 21. A plurality of light emitting diode elements 32 attached to the end side, a lighting circuit 82 disposed in the lamp outer member 21, and a globe 83 provided on the other end side of the lamp outer member 21 covering the light emitting diode element 32 It is configured as a light bulb shaped lamp.

  A recess 85 is formed on one end side of the lamp outer member 21, and a lighting circuit 82 is accommodated in the recess 85 via an insulating member 86. A mounting portion 87, which is a partition portion, is formed on the other end side of the lamp outer member 21, and a substrate 34 on which a plurality of light emitting diode elements 32 are disposed is mounted on the mounting portion 87 with screws 88 in a surface contact state. .

  An annular cover 81 made of an insulating material is attached to one end side of the lamp outer member 21. A stepped lamp side contact surface 89 exposed from the cover 81 is formed on one end surface 22 of the lamp outer member 21.

  Further, the socket 13 is formed by projecting and forming a main body cylinder portion 91 that constitutes the socket portion 52 on the socket main body 51, and a receiver 53 is disposed inside the main body cylinder portion 91, and is on one end surface side of the main body cylinder portion 91. A terminal board 54 is arranged on the back side.

  The outer shell member 59 of the socket body 51 is formed with an outer tube portion 92 disposed on the outer periphery of the main body tube portion 91. The outer tube portion 92 protrudes from the main body tube portion 91 and is formed on the distal end surface of the outer tube portion 92. A socket-side contact surface 93 that is in close contact with the lamp-side contact surface 89 of the lamp outer member 21 in a state where the base 28 of the lamp 12 is connected to the socket portion 52 is formed.

  In the lighting device 11, when the lamp 12 is connected to the socket 13, the base 28 of the lamp 12 is inserted into the outer cylindrical portion 92 of the socket outer member 59 of the socket 13 and the inner cylindrical portion 91 of the socket main body 51. The shell 29 of the base 28 is screwed into the receiver 53 by screwing the lamp 12 while being fitted to the receiver 53. With this screwing, the eyelet 31 of the base 28 comes into contact with the terminal plate 54, and the screwing is further continued while the terminal plate 54 is elastically deformed.

  Furthermore, by continuing the screwing, the lamp-side contact surface 89 of the one end surface 22 of the lamp outer member 21 comes into surface contact with the socket-side contact surface 93 at the tip of the outer tube portion 92 of the socket outer member 59 and tightened by screwing. Due to the applied force, the lamp-side contact surface 89 of the lamp outer member 21 comes into close contact with the socket-side contact surface 93 of the socket outer member 59.

  When the lamp 12 is turned on, heat generated by the light emitting diode element 32 is transmitted to the substrate 34, transmitted from the substrate 34 to the lamp outer member 21, and radiated from the outer surface of the lamp outer member 21 to the air. The light is transmitted from the lamp outer member 21 to the socket outer member 59 in close contact therewith. The heat transmitted to the socket outer member 59 is radiated from the outer surface of the socket outer member 59 into the air, and is also transmitted to the instrument body and the wall surface with which the socket outer member 59 contacts to radiate heat.

  In this way, by electrically connecting the base 28 of the lamp 12 to the socket portion 52 of the socket 13, the metal lamp outer member 21 of the lamp 12 is in close contact with the metal socket outer member 59 of the socket 13, The heat of the light emitting diode element 32 of the lamp 12 can be dissipated from the lamp outer member 21 into the air, and can be transmitted from the lamp outer member 21 to the socket 13 side to dissipate heat, so that the heat dissipation of the lamp 12 can be improved. Therefore, the lamp 12 can be downsized.

  Further, since the lamp outer member 21 of the lamp 12 is in close contact with the socket outer member 59 of the socket 13, the lamp 12 can be firmly held in the socket 13, and the lamp 12 can be prevented from loosening due to vibration or the like.

  In addition, the lamp outer member 21 of the lamp 12 and the socket outer member 59 of the socket 13 are in close contact with each other on a plane that intersects the axial direction of the socket portion 52, that is, a plane that is perpendicular to each other. it can.

  The lamp outer member 21 of the lamp 12 and the socket outer member 59 of the socket 13 are preferably in close contact with each other on a plane perpendicular to the axial direction of the socket portion 52, but are in close contact with each other on an oblique surface with respect to the axial direction. May be. For example, the inclined outer peripheral surface of the socket outer member 59 and the socket outer member 59 may be in close contact with each other.

  Further, in each of the above embodiments, the heat conducting portion of the socket 13 is not limited to the socket outer member 59 that covers the socket main body 51, but is disposed in a part of the socket main body 51 and thermally connected to the instrument main body and the like. May be.

In addition, the light source is a point light source including a light emitting element such as the light emitting diode element 32,
A fluorescent lamp or the like may be used.

11 Lighting equipment
12 lamps
13 socket
21 Lamp outer member as outer part
28 base
32 Light-emitting diode element as light source
52 Socket
59 Socket shell as heat conduction part
73 Spring as biasing means

Claims (3)

A metal outer part, a base provided in an insulated state with respect to the outer part, and a socket part to which a base of a lamp having a light source supported by the outer part is electrically connected;
A metal heat conduction part in which the outer part of the lamp is in close contact with the lamp base connected to the socket part;
An illumination device comprising:   The heat conducting portion is provided so as to be movable along the axial direction of the socket portion with respect to the socket portion, and is urged by the urging means in a direction protruding from the socket portion. The lighting device according to claim 1. A lamp having a metal outer part, a base provided in an insulated state with respect to the outer part, and a light source supported by the outer part;
A socket part to which the lamp base is electrically connected;
A metal heat conduction part in which the outer part of the lamp is in close contact with the lamp base connected to the socket part;
An illumination device comprising:

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