JP2010010044A - Lamp device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lamp device having an attachable and detachable structure of a lamp and a circuit which can freely detachably be combined with each other, and capable of obtaining a sufficient light output from a starting time to a stable light-up time. <P>SOLUTION: The lamp device has the circuit 1 and the lamp 2 which are freely detachably formed. The lamp 2 has a connection section 18 formed on a light-emitting tube storage cover 9 for housing a light-emitting tube 11, a metal material 13 wherein one end is connected with the coldest spot 16 of the light-emitting tube 11 and the other end is arranged at the connection section 18, and a connection pin 7 connected with the light-emitting tube 11. The circuit 1 has a circuit storage cover 4 for housing a light-up drive circuit 5, a connection section 19 formed at the circuit storage cover 4, a metal material 14 wherein one end is connected with a base 3 and the other end is arranged on the connection section 19, and a conductive connection metal fitting 6 connected with the light-up drive circuit 5. When the connection section 18 and the connection section 19 are connected with each other, the connection pin 7 and the conductive connection metal fitting 6 are electrically connected with each other, and the other end of the metal material 13 and the other end of the metal material 14 are thermally connected to each other. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a lamp device, and more particularly to a lamp device having a lamp portion and a circuit portion that are detachably combined.

  In recent years, for the purpose of energy saving and the like, lamp devices such as a light bulb type and a compact type fluorescent lamp incorporating an inverter type lighting drive circuit have come to be used in many cases.

This type of fluorescent lamp is described in Patent Document 1, for example. In such a bulb-type or compact fluorescent lamp incorporating a conventional inverter-type lighting drive circuit, the discharge arc tube and the inverter-type lighting drive circuit are integrated. For this reason, replacement of the discharge arc tube that has reached the end of its life is not considered in terms of structure, and the entire fluorescent lamp incorporating the inverter type lighting drive circuit must be replaced.
JP 2002-15702 A

When a fluorescent lamp reaches the end of its life, instead of replacing the entire fluorescent lamp as in the past, a fluorescent lamp consisting of a lamp part and a circuit part, in which a discharge arc tube and an inverter-type lighting drive circuit are detachably combined, is produced. However, it is conceivable that only the lamp part is replaced and the circuit part is reused when the lamp life is reached. According to such a configuration, it is expected to meet the demand for further energy saving and resource saving in recent years, but at the same time, improvement of lamp performance is indispensable.
Generally, the radiant heat of the arc tube when the bulb-type fluorescent lamp is turned on is higher than the radiant heat of the linear and round fluorescent lamps. For this reason, the form of mercury that is indispensable for the emission of fluorescent lamps is pure mercury or mercury amalgam that has characteristics almost equal to pure mercury in the case of linear and round fluorescent lamps with low radiant heat. The mercury vapor pressure in the arc tube is optimized, and a constant and sufficient light output is obtained from the start to the stable lighting, whereas in the case of a bulb lamp with high radiant heat, it emits at a temperature higher than that of pure mercury. Since mercury amalgam that optimizes the mercury vapor pressure in the tube is enclosed, sufficient light output can be obtained at the time of stable lighting, but sufficient light output cannot be obtained at low temperatures during start-up.
In order to obtain a sufficient light output even at the time of start-up in a bulb-type fluorescent lamp with high radiant heat, pure mercury or mercury amalgam having characteristics almost equal to pure mercury is enclosed as in the case of linear and round fluorescent lamps. In addition, it is necessary to release the radiant heat of the arc tube to the outside so that the coldest spot temperature at which mercury in the arc tube collects is close to that of a linear or round fluorescent lamp.

  Accordingly, an object of the present invention is to provide a lamp device having a lamp part and a circuit part detachable structure that can be detachably coupled, and capable of obtaining a sufficient light output from the start to the stable lighting.

  The object is to provide an arc tube, an arc tube storage cover for storing the arc tube, a first connection part formed on the arc tube storage cover, and one end connected to the coldest spot of the arc tube, the first connection part. A lamp portion having a first metal material having the other end disposed thereon and a first conductive member connected to the arc tube, a base connected to a power source, a lighting drive circuit for lighting the arc tube, and the lighting A circuit housing cover for housing a driving circuit; a second connecting portion formed on the circuit housing cover; a second metal member having one end connected to the base and the other end disposed at the second connecting portion; and the lighting driving circuit When the first connecting part and the second connecting part are connected to connect the lamp part and the circuit part in a detachable manner, the circuit part having the second conductive member connected to the The first conductive member and the second conductive member are electrically connected. Is connected, the other end of the first metal member and the other end of the second metal material is achieved by the configuration the lamp unit so as to be thermally connected to.

  Here, one of the first connecting portion and the second connecting portion may be a convex portion and the other may be a corresponding concave portion. The second connecting part may include a protective member for preventing contact with the other end of the second metal material. One end of the second metal material can be configured to be sandwiched between the circuit storage cover and the base. It is preferable that the coldest spot of the arc tube is exposed to the outside of the arc tube storage cover. The lamp part may include an inclusion for reducing the influence of radiant heat from the arc tube at the periphery of the coldest spot of the arc tube in the arc tube storage cover. The second conductive member can be mounted on a substrate of the lighting drive circuit.

  The lamp body according to the present invention includes a base connected to a power source, a lighting drive circuit for lighting the arc tube, a circuit storage cover for storing the lighting drive circuit, and a second connecting portion formed in the circuit storage cover. A lamp lighting circuit device having a second metal member having one end connected to the base and the other end disposed at the second connecting portion and a second conductive member connected to the lighting driving circuit. One end connected to the arc tube, the arc tube housing cover for housing the arc tube, a first connecting portion formed on the arc tube housing cover, and the coldest spot of the arc tube A first metal member having the other end disposed on the first connecting portion, and a first conductive member connected to the arc tube, wherein the first connecting portion is coupled to the lamp lighting circuit device. When connected to the second connecting portion, the first With the conductive member is electrically connected to the second conductive member, configured as the other end of the first metal material is the other end thermally connected to the second metal member.

  The lamp lighting circuit device according to the present invention includes an arc tube, an arc tube storage cover for storing the arc tube, a first connecting portion formed on the arc tube storage cover, and one end connected to the coldest spot of the arc tube And is configured to be detachable from a lamp body having a first metal member having the other end disposed at the first connecting portion and a first conductive member connected to the arc tube, and is connected to a power source. A base, a lighting drive circuit for lighting the arc tube, a circuit storage cover for storing the lighting drive circuit, a second connecting portion formed in the circuit storage cover, and one end connected to the base A second metal member having the other end disposed on the second connecting part, and a second conductive member connected to the lighting driving circuit, the second connecting part being connected to the lamp body, When connected to the first connecting portion, the second conductive member Wherein is electrically connected to the first conductive member, configured as the other end of the second metal material is the other end thermally connected to the first metal member.

  In the present invention, in the integrated state in which the lamp unit and the circuit unit are connected, the metal material of the lamp unit is provided for transferring the arc tube radiant heat to the power base socket through the base. It is preferable that the metal material of the circuit portion is in mechanical contact with a protective member that prevents a human finger from touching. Furthermore, it is preferable that the metal material provided for transferring the arc tube radiant heat to the power base socket through the base has excellent heat conduction and elasticity. Furthermore, the metal material of the circuit part provided for transferring the arc tube radiant heat to the power base socket through the base includes the storage cover and the base in the base mounting part of the lighting drive circuit storage cover. It is preferable to have a structure in which a part of the metal material is sandwiched therebetween. Furthermore, it is preferable to have a structure in which the coldest point of the arc tube penetrates from the inside of the arc tube housing cover to the outside, and the coldest point touches the outside air. In addition, a notch part may be formed in the cover in the vicinity of the coldest spot, and the coldest spot may be in contact with the outside air.

  Further, the arc tube housing cover has, for example, ribs as inclusions around the cold spot inside the arc tube housing cover so as to reduce the influence of the arc tube radiant heat received by the cold spot of the arc tube. Preferably it is. Furthermore, it is preferable that a receiving plate (conductive member) for making electrical contact with the lamp unit terminal is directly mounted on the substrate of the lighting drive circuit. Furthermore, it is preferable that the circuit portion and the outer surface of the lamp portion have attachment / detachment alignment so that the circuit portion can be easily engaged with the lamp portion conductive member. Note that the above structure includes an arc tube and, for example, an inverter type lighting drive circuit for lighting it, and is not limited to a lamp device having a lamp unit and a circuit unit that are detachably combined, but a discharge arc tube and inverter type lighting. You may use for the lamp device with which the drive circuit was integrated. The base shape is not limited to a single shape, and may be used for E bases, B bases, etc. of other sizes. The connection pin 7 is G10q type. However, the pin shape is not limited to one.

  With such a configuration, the lamp unit and the circuit unit can be attached and detached, and sufficient light output can be obtained from the start to the stable lighting.

  In a lamp device in which a lamp unit and a circuit unit are detachably combined, the lamp unit has a mechanism capable of transmitting arc tube radiant heat to a base socket through a base and strengthening the connection state between the lamp unit and the circuit unit. The heat transfer path is formed in each of the lamp part and the circuit part, and when the lamp part and the circuit part are combined and integrated, the connection of each heat transfer path and the engagement of the lamp part and the circuit part are integrated. It is necessary to have a mechanism. In the heat transfer path of the lamp part, one end of the metal material is in contact with the coldest spot of the arc tube, and the other end of the metal material is in contact with the outer surface of the arc tube housing cover. Therefore, the radiant heat of the arc tube is transmitted from the coldest point to one end of the metal material, and is transmitted from the other end of the metal material contacting the outer surface of the arc tube housing cover to the outside through the metal material. On the other hand, in the heat transfer path of the circuit portion, one end of the metal material is in contact with the outer surface of the lighting drive circuit housing cover, and the other end of the metal material is in contact with the base. Therefore, heat from the outside is received from one end of the metal material that is in contact with the outer surface of the lighting drive circuit storage cover, passes through the metal material, and passes through the base that is in contact with the other end of the metal material. Heat is transferred to the socket. In an integrated state in which the lamp unit and the circuit unit are combined, one end of the metal material in contact with the outer surface of the arc tube storage cover of the lamp unit and the outer surface of the lighting drive circuit storage cover of the circuit unit are in contact. One end of the metal material is in contact, and the heat transfer path between the lamp part and the circuit part is connected. In addition, the metal material is brought into contact with the outer surface of the convex portion of the arc tube storage cover of the lamp unit, while it is in contact with the outer surface of the concave portion of the lighting drive circuit storage cover of the circuit unit (corresponding to the convex portion of the arc tube storage cover). By bringing the metallic material in contact with each other mechanically, the contact of heat transfer and the engagement of both covers are performed simultaneously. Here, the convex portion and the concave portion can be reversed. Moreover, it becomes a standard which a circuit part can engage easily with a lamp | ramp part electrically-conductive member.

  The mechanical contact between the metal material of the lamp part and the metal material of the circuit part can transmit the radiant heat of the coldest spot part to the power base socket through the base, but at the same time, the base is energized. Therefore, since electricity is supplied to the metal material, it is necessary to prevent the finger from touching the metal material. As a countermeasure, when the lamp unit and the circuit unit are connected, the metal material of both the lamp unit and the circuit unit is covered with the lighting drive circuit storage cover and the arc tube storage cover, and a finger or the like can be touched. It is not in a state. On the other hand, when the base is inserted into the power base socket with only the circuit part not connected to the lamp part being energized, the outer surface of the concave part of the lighting drive circuit storage cover of the circuit part (the convex part of the arc tube storage cover) In order to prevent a finger from touching a metal material that is in contact with the cover, a rib for preventing contact is provided as a protective member so that a person cannot touch the cover.

  Since the metal material is provided for the purpose of heat conduction contact and mechanical contact as described above, the metal material is preferably a material having excellent heat conduction and elasticity. The metal material will be further described later.

  When connecting the metal part of the circuit part to the base, in order to prevent the metal material from picking up the heat generated by the lighting drive circuit, the transmission efficiency of the arc tube radiant heat is reduced. A part of the metal material is sandwiched between the two. Thereby, a part of the storage cover is interposed between the metal material and the lighting drive circuit and has a heat insulation effect, so that the thermal influence of the lighting drive circuit can be reduced.

  The exhaust tube sealing top portion or mercury amalgam enclosure tube, which is the coldest spot of the arc tube, penetrates from the inside of the arc tube housing cover to the outside and is structured to be exposed to the outside air. That is, the coldest spot is exposed outside the arc tube storage cover. As a result, the coldest spot of the arc tube can be made less susceptible to arc tube radiant heat accumulated in the arc tube storage cover. Even if the coldest spot does not penetrate from the inside of the arc tube housing cover to the outside and a notch is formed in the cover near the coldest spot so that the coldest spot is in contact with the outside air, the same effect can be obtained. Furthermore, in order to make the arc tube storage cover less susceptible to the influence of arc tube radiant heat, the arc tube storage cover is placed around the coolest spot exhaust pipe inside the arc tube storage cover or around the coldest mercury amalgam enclosure tube. Ribs are provided as inclusions.

  A light receiving member (conductive member) for making electrical contact with the lamp unit terminal is directly mounted on and integrated with the substrate of the lighting drive circuit. Since the lighting drive circuit and the receiver are integrated, the parts that support the receiver and the parts that connect the receiver and the lighting drive circuit become unnecessary, reducing the overall length of the lamp, reducing costs, and simplifying the lighting driver circuit assembly. Is possible.

  It is preferable to have a mark such as an arrow mark or a concavo-convex part on the outer surface of the circuit part and the lamp part as an attachment / detachment alignment so that the circuit part can easily engage with the lamp part conductive member. The mark can be provided by printing, sticking a sticker, or a case structure.

  According to the present invention, it is possible to obtain a lamp device having a detachable structure of a lamp unit and a circuit unit that are detachably combined, and capable of obtaining a sufficient light output from the start to the stable lighting.

  Embodiments of a lamp device according to the present invention will be described below with reference to the drawings, taking a fluorescent lamp as an example. The reference numerals described in the drawings are all common numerals in each embodiment described below. In each figure, reference numeral 1 is a fluorescent lamp circuit section, 2 is a fluorescent lamp lamp section, 3 is an E26 base, 4 is an inverter type lighting drive circuit housing cover, 5 is an inverter type lighting drive circuit, and 6 is a connection pin and an inverter. Conductive connection fitting (circuit part conductive member) with a type lighting drive circuit, 7 is a connection pin (lamp part conductive member), 8 is a connection lead wire between the connection pin and the arc tube electrode part, 9 is an arc tube housing cover, 10 is Inner case (light-emitting tube holding means), 11 is a discharge light-emitting tube, 12 is a glass globe, 13 is a copper fitting (metal material) of a lamp part, 14 is a copper fitting (metal material) of a circuit part, and 15 is glass wool (heat insulating material) ), 16 is an exhaust pipe sealing top portion (cold spot portion) of the discharge arc tube, and 17 is a power base socket.

  1A and 1B are diagrams showing a first embodiment of a lamp device according to the present invention, in which FIG. 1A shows a circuit portion and FIG. 1B shows a lamp portion. As shown in the figure, the present lamp device includes a circuit unit (lamp lighting circuit device) 1 and a lamp unit (lamp body) 2 that are detachably configured. The lamp unit (lamp body) 2 has one end at the arc tube 11, the arc tube storage cover 9 for storing the arc tube 11, the connecting portion 18 formed on the arc tube storage cover 9, and the coldest spot 16 of the arc tube 11. A metal member 13 connected to the connecting portion 18 at the other end and a connection pin (conductive member) 7 connected to the arc tube 11 are provided. The circuit unit (lamp lighting circuit device) 1 is formed in a base 3 connected to a power source, a lighting driving circuit 5 for lighting the arc tube 11, a circuit housing cover 4 for housing the lighting driving circuit 5, and a circuit housing cover 4. And a conductive metal fitting (conductive member) 6 connected to the lighting drive circuit 5 and a metal member 14 having one end connected to the base 3 and the other end disposed on the connection portion 19. When the connecting portion 18 and the connecting portion 19 are connected to connect the lamp portion 2 and the circuit portion 1, the connection pin (conductive member) 7 and the conductive connection fitting (conductive member) 6 are electrically connected. In addition, the other end of the metal material 13 and the other end of the metal material 14 are thermally connected.

  That is, the lamp unit (lamp body) 2 is configured to be detachable from the circuit unit (lamp lighting circuit device) 1, and includes an arc tube 11, an arc tube storage cover 9 for storing the arc tube 11, and an arc tube storage. A connecting portion 18 formed on the cover 9, a metal member 13 having one end connected to the coldest spot 16 of the arc tube 11 and the other end disposed on the connecting portion 18, and a connection pin ( When the connecting portion 18 is connected to the connecting portion 19 to be connected to the circuit portion (lamp lighting circuit device) 1, the connection pin (conductive member) 7 is connected to the conductive connecting metal fitting (conductive member). 6, and the other end of the metal material 13 is thermally connected to the other end of the metal material 14. On the other hand, the circuit unit (lamp lighting circuit device) 1 is configured to be detachable from the lamp unit (lamp body) 2, and a base 3 connected to a power source and a lighting drive circuit 5 for lighting the arc tube 11. A circuit storage cover 4 for storing the lighting drive circuit 5, a connecting portion 19 formed on the circuit storage cover 4, a metal member 14 having one end connected to the base 3 and the other end disposed on the connecting portion 19, A conductive connection fitting (conductive member) 6 connected to the lighting drive circuit 5 is provided, and when the connecting portion 19 is connected to the connecting portion 18 to be connected to the lamp portion (lamp body) 2, the conductive connecting fitting (conductive member) is connected. Member) 6 is electrically connected to connection pin (conductive member) 7, and the other end of metal material 14 is thermally connected to the other end of metal material 13.

  Here, the term “thermally connected” means that the metal material is connected so as to transfer heat. In the present embodiment, the heat transfer path between the metal material 13 and the metal material 14 in an integrated state in which the lamp unit 2 and the circuit unit 1 are combined is by mechanical contact, but the contact method is surface contact, Including line contact, point contact, fitting, etc., a heat transfer substance such as grease may be interposed at the contact point. Moreover, the connection part 18 and the connection part 19 can make one side a convex part, and can make the other the recessed part corresponding to it. In this embodiment, the connecting portion 18 is a convex portion and the connecting portion 19 is a concave portion.

  When the connecting portion 18 and the connecting portion 19 are connected, the arc tube radiant heat is transmitted to the power base socket 17 through the coldest spot portion 16, the metal material (13, 14), and the base 3. The heat radiation effect by this metal material (copper metal fittings) is as follows, for example. The coldest spot temperature of the arc tube in the conventional fluorescent lamp was 115 ° C. Since the cold spot temperature of the arc tube in the present invention is 61 ° C., a reduction effect of about 50 ° C. can be obtained from the cold spot temperature of the conventional fluorescent lamp. It was possible to approach the cold spot temperature of about 40 ° C. Thus, in the present lamp device, the mercury amalgam having the characteristics substantially equal to pure mercury or pure mercury similar to the case of the linear and round fluorescent lamps with low radiant heat can be enclosed in the arc tube 11. In this example, mercury amalgam having characteristics almost equal to pure mercury was enclosed.

  Here, the metal material refers to a metal having excellent thermal conductivity or a material using a metal, and includes a metal such as copper, aluminum, or a compound thereof, or a silicone material mixed with these metals. In this example, as described above, a copper metal fitting was used as the metal material.

  The metal material 14 in the circuit unit 1 is provided through the lighting drive circuit storage cover 4 and is preferably disposed along the inner surface of the lighting drive circuit storage cover 4. The circuit unit 1 can include glass wool (heat insulating material) 15 as an inclusion for suppressing heat transfer between the metal material 14 and the lighting drive circuit 5. This inclusion can be an insulator. Further, one end of the metal material 13 in the lamp unit 2 can be disposed so as to cover the periphery of the coldest spot 16 of the arc tube 11.

  The embodiment of FIG. 1 will be described in further detail. As shown in the figure, the lamp device includes a lamp unit 2 having a discharge arc tube 11, a base 3 connected to a power source, and a circuit unit 1 having an inverter type lighting drive circuit 5 for lighting the discharge arc tube 11. Are detachably combined. The lamp unit 2 includes an inner case (arc tube holding means) 10 that holds the discharge arc tube 11, a connection pin (conductive member) 7 connected to an electrode of the discharge arc tube 11, and a copper fitting (metal material) of the lamp unit. ) 13. The circuit unit 1 includes a conductive connection fitting (conductive member) 6 that engages with the connection pin 7 and is connected to the inverter type lighting drive circuit 5, and an inverter type lighting drive circuit storage cover 4 that stores the lighting drive circuit 5. .

  The circuit unit 1 and the lamp unit 2 are detachable. The circuit unit 1 includes an E26 base 3 connected to the power base socket 17, an inverter type lighting drive circuit storage cover 4 fixed to the base 26, and an inverter type lighting drive circuit 5 accommodated in the cover. Yes. The lamp unit 2 includes a discharge arc tube 11 having a pair of electrodes and phosphors coated on the inner surface thereof, and an inner case 10 that holds the discharge arc tube 11. The discharge arc tube 11 is held by the inner case 10 at both ends thereof. A connection pin 7 is connected as a lamp part conductive member to the two pairs of electrodes at both ends of the discharge arc tube 11, and a conductive connection fitting 6 as a circuit part conductive member engaged with the connection pin 7 corresponds to the circuit part 1. It is provided at the place.

  In this embodiment, as shown in the drawing, the conductive connection fitting 6 for making electrical contact with the connection pin 7 which is a lamp portion terminal is directly mounted on and integrated with the substrate of the lighting drive circuit 5. Since the lighting drive circuit 5 and the conductive connection fitting 6 are integrated, a part for supporting the conductive connection fitting 6 and a part for connecting the conductive connection fitting 6 and the lighting drive circuit 5 are not required, thereby suppressing the total length of the lamp and reducing the cost. In addition, the lighting drive circuit assembly can be simplified.

  In this way, by engaging the connection pin 7 and the connection fitting 6 in an electrically connected state, the circuit unit 1 and the lamp unit 2 are joined together, and the lamp can be lit as a fluorescent lamp. Conversely, by disconnecting the connection pins 7 and the conductive connection fittings 6, the circuit unit 1 and the lamp unit 2 are separated, and the lamp unit 2 can be replaced.

  In the lamp part 2, a copper fitting (metal material) 13 is connected to the exhaust pipe top part (cold spot part) 16 of the discharge arc tube 11 and the arc tube housing cover 9, while in the circuit part 1, an inverter type lighting drive is performed. By connecting a copper metal fitting (metal material) 14 to the circuit storage cover 4 and the E26 base 3, the copper metal fitting (metal material) 13 and the copper metal fitting (metal material) in an integrated state in which the lamp portion 2 and the circuit portion 1 are combined. 14 is in mechanical contact, and in the lamp lighting state, the radiant heat of the exhaust pipe top portion (cold spot portion) 16 of the arc tube can be transferred to the base power supply socket 17 through the E26 base 3.

  By incorporating an end-of-life voltage detection circuit in the inverter lighting drive circuit, the discharge arc tube that has reached the end of life separates the lamp unit 2 from the circuit unit 1 and replaces only the lamp unit 2 with a new one. A good lighting state can be recovered. As a result, the circuit unit 1 can be used for a long time.

  FIGS. 2A to 2C are perspective views showing a lamp portion, a circuit portion, and a connecting portion thereof in the first embodiment of the lamp device according to the present invention. As shown in the figure, one end of the copper fitting 13 of the lamp part 2 is disposed on the outer surface of a connecting part (convex part) 18 formed in the arc tube housing cover 9. On the other hand, one end of the copper metal fitting 14 is arranged on the outer surface of a connecting portion (concave portion) 19 formed to correspond to the convex portion 18 of the lamp portion 2 in the lighting drive circuit storage cover 4 of the circuit portion 1. By inserting the lamp part 2 into the circuit part 1 and turning it clockwise, the convex part 18 of the lamp part 2 is pressed against and fixed to the concave part 19 of the circuit part 1, and the copper metal fitting 13 and the copper metal fitting 14 are thermally heated. Connected. As described above, since the copper fittings are arranged on the concave and convex portions of both storage covers, in the integrated state in which the lamp portion 2 and the circuit portion 1 are combined, the contact of heat transfer and the engagement of both storage covers are simultaneously performed. Can be done. Furthermore, the concave and convex portions become marks during integration and can be easily engaged. In addition, an arrow mark may be attached to the outer surfaces of the arc tube storage cover 9 and the lighting circuit storage cover 4 so that the circuit unit 1 can be more easily engaged with the lamp unit 2.

  Moreover, since the copper metal fitting 13 and the copper metal fitting 14 are conductive, it is necessary to prevent a finger or the like from touching the copper metal fitting when the E26 base 3 is energized. For this reason, in the integrated state in which the lamp unit 2 and the circuit unit 1 are connected, the storage cover 4 covers and hides the copper metal fitting, and the finger cannot be contacted. On the other hand, when the E26 base 3 is fitted in the power base socket 17 and is energized with only the circuit part 1 to which the lamp part 2 is not connected, the outer surface of the recess 19 of the lighting drive circuit storage cover of the circuit part 1 A rib 20 is provided as a protective member on the lighting drive circuit housing cover 4 so that a finger or the like cannot be in contact with the copper metal fitting 14 arranged in the above.

  Since the copper metal fitting is provided for the purpose of heat conduction contact and mechanical contact, a copper compound having excellent heat conductivity and elasticity is used. Thereby, the mechanical contact effect by elasticity becomes large and heat conduction is performed efficiently.

  FIG. 3A is a perspective view showing the lighting drive circuit storage cover 4, the copper fitting 14, and the E26 base 3 constituting the circuit unit 1 according to the first embodiment of the present invention, and FIG. It is an enlarged view of the B section. As shown in the figure, one end of the copper metal fitting 14 is passed through a slit 21 provided in the storage cover 4, and the copper metal fitting 14 is sandwiched between the storage cover 4 and the E26 base 3 at the base attachment portion of the storage cover 4. Thereby, since a part of the storage cover 4 functions as a heat insulating material, the copper fitting 14 can reduce a decrease in the efficiency of transmitting the arc tube radiant heat due to the heat generated by the lighting drive circuit 5.

  FIG. 4 is a partially cutaway view of the lamp portion 2 according to the first embodiment of the present invention. As shown in the drawing, the exhaust pipe sealing top portion 16 that is the coldest spot of the arc tube 11 penetrates from the inside of the arc tube housing cover 9 to the outside and is configured to be exposed to the outside air. Thereby, the coldest spot 16 of the arc tube 11 can be made less susceptible to arc tube radiant heat accumulated in the arc tube storage cover 9. Further, the arc tube storage cover 9 has ribs 20 as inclusions around the coolest point exhaust pipe 16 inside the arc tube storage cover 9 so that the coldest spot portion 16 of the arc tube 11 is less affected by the radiant heat of the arc tube. Is provided.

  FIG. 5 is a view showing a second embodiment of the lamp device according to the present invention. As shown in the figure, one end of the copper fitting 13 of the lamp part 2 is brought into contact with the outer surface of a connecting part (convex part) 18 formed in the arc tube housing cover 9. On the other hand, one end of the copper metal fitting 14 is brought into contact with the outer surface of a connecting part (concave part) 19 formed to correspond to the convex part 18 of the lamp part 2 in the lighting drive circuit storage cover 4 of the circuit part 1. Although not shown, the circuit unit 1 of the present embodiment has no rib 20 provided on the lighting drive circuit housing cover 4 in the circuit unit 1 of FIG. Also in this case, by inserting the lamp part 2 into the circuit part 1 without the rib 20 (not shown) and turning it clockwise, the convex part 18 of the lamp part 2 is pressed against and fixed to the concave part 19 of the circuit part 1 and is made of copper. The metal fitting 13 and the copper metal fitting 14 are thermally connected. As described above, since the copper fittings are arranged on the concave and convex portions of both storage covers, in the integrated state in which the lamp portion 2 and the circuit portion 1 are combined, the contact of heat transfer and the engagement of both storage covers are simultaneously performed. Can be done.

  The present invention relates to a lamp device, and more particularly to a lamp device including a base, a light emitting tube, and an inverter type lighting drive circuit for lighting the lamp, and having a lamp unit and a circuit unit that are detachably combined. There is industrial applicability.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows 1st Example of the lamp device based on this invention, (a) is a circuit part, (b) is a lamp part. (A)-(c) is a perspective view which shows the lamp | ramp part, circuit part, and its connection part of 1st Example of the lamp device which concerns on this invention. (A) is the perspective view which shows the lighting drive circuit storage cover 4, the copper metal fitting 14, and the E26 base 3 which comprise the circuit part 1 which concerns on 1st Example of this invention, (b) is the B section in (a). FIG. It is a partial cross section figure of the lamp | ramp part 2 which concerns on 1st Example of this invention. FIG. 5 is a view showing a second embodiment of the lamp device according to the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fluorescent lamp circuit part 2 Fluorescent lamp lamp part 3 E26 base 4 Inverter type lighting drive circuit storage cover 5 Inverter type lighting drive circuit 6 Conductive connection fitting 7 Connection pin 8 Connection lead wire 9 between connection pin and arc tube electrode part 9 Light emission Tube storage cover 10 Inner case 11 Discharge arc tube 12 Glass glove 13 Copper fitting (metal material) of lamp part
14 Copper fittings (metal material) for circuit parts
15 Glass wool (heat insulation)
16 Exhaust tube sealing top of discharge arc tube (cold spot)
17 Power supply socket 18 Convex part 19 formed in the arc tube housing cover 19 Concave part 20 formed in the lighting driving circuit housing cover Rib 21 formed in the lighting driving circuit housing cover Slit 22 provided in the lighting driving circuit housing cover Arrow mark

Claims (9)

  An arc tube, an arc tube storage cover for storing the arc tube, a first connection part formed on the arc tube storage cover, one end connected to the coldest spot of the arc tube, and the other end to the first connection part A lamp unit having a first metal member and a first conductive member connected to the arc tube, a base connected to a power source, a lighting drive circuit for lighting the arc tube, and the lighting drive circuit are housed. A circuit housing cover, a second connecting portion formed on the circuit housing cover, a second metal member having one end connected to the base and the other end disposed on the second connecting portion, and the lighting driving circuit. A circuit unit having a second conductive member, and the first conductive unit is connected to the lamp unit and the circuit unit when the first connection unit and the second connection unit are connected to each other. A member and the second conductive member are electrically connected. Together with the lamp device characterized by the other end of the first metal member and the other end of the second metal material is configured to be thermally connected.   The lamp device according to claim 1, wherein one of the first connecting portion and the second connecting portion is a convex portion and the other is a concave portion corresponding to the convex portion.   The lamp device according to claim 1, wherein the second connecting portion includes a protective member for preventing contact with the other end of the second metal material.   The lamp device according to claim 1, wherein one end of the second metal material is sandwiched between the circuit housing cover and the base.   The lamp device according to any one of claims 1 to 4, wherein a coldest spot portion of the arc tube is exposed to the outside of the arc tube storage cover.   2. The lamp part according to claim 1, further comprising an inclusion for reducing an influence of radiant heat from the arc tube at a peripheral part of the coldest spot of the arc tube in the arc tube housing cover. The lamp apparatus in any one of -4.   The lamp device according to claim 1, wherein the second conductive member is mounted on a substrate of the lighting drive circuit.   A base connected to a power source, a lighting drive circuit for lighting the arc tube, a circuit storage cover for storing the lighting drive circuit, a second connecting portion formed in the circuit storage cover, and one end connected to the base. A lamp body configured to be detachable from a lamp lighting circuit device having a second metal member having the other end disposed at the second connecting portion and a second conductive member connected to the lighting driving circuit; An arc tube, an arc tube storage cover for storing the arc tube, a first connection part formed on the arc tube storage cover, and one end connected to the coldest spot of the arc tube, the first connection part A first metal member disposed at the other end; and a first conductive member connected to the arc tube, wherein the first connecting part is connected to the second connecting part for coupling with the lamp lighting circuit device. When the first conductive member is Are electrically connected to a member, the lamp body and the other end of the first metallic material is configured to be connected to the other end thermally of the second metal member.   An arc tube, an arc tube storage cover for storing the arc tube, a first connection part formed on the arc tube storage cover, one end connected to the coldest spot of the arc tube, and the other end to the first connection part A lamp lighting circuit device configured to be detachable from a lamp body having a first metal material arranged and a first conductive member connected to the arc tube, wherein a base connected to a power source, and the light emission A lighting driving circuit for lighting the tube, a circuit housing cover for housing the lighting driving circuit, a second connecting portion formed in the circuit housing cover, and one end connected to the base, to the second connecting portion A second metal member disposed at the other end; and a second conductive member connected to the lighting drive circuit, wherein the second connecting part is connected to the first connecting part for coupling with the lamp body. Sometimes, the second conductive member becomes the first conductive member. With the gas connected, the lamp lighting circuit unit and the other end of the second metal material is configured to be the other end thermally connected to the first metal member.

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