JP2006080015A - Fluorescent lamp device and lighting apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fluorescent lamp device and lighting apparatus, in which an out put light flux is increased by efficiently radiating a light from a lighting tube to outside, wherein the failures and melting of resin can be prevented. <P>SOLUTION: The fluorescent lamp device is provided with a lighting tube 11 having a bent discharge path having an electrode 14 at an edge, wherein a fluorescent material layer formed on the inner face and a discharge media is sealed; and a holder 12 with a support means 12c which is formed in a projecting way from the holder side and the side port opposite to the lighting tube 11 to the lighting tube and holding the edge of the lighting tube, having the electrode in a condition that it is brought into contact with or separated from the holder face and formed on one side, while having a mountpiece 13 with a conducting member to be connected to the electrode of the lighting tube and formed on another edge. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a fluorescent lamp device having a discharge path formed by bending or connecting arc tubes, and a lighting fixture using the fluorescent lamp device.

  There are compact fluorescent lamps and light bulb-type fluorescent lamps as fluorescent lamp devices of this type, and the size and weight have been reduced. In particular, light bulb-type fluorescent lamps have become very similar in appearance to general incandescent light bulbs. It is becoming more widespread.

Particularly in recent years, for example, as disclosed in Patent Document 1 below, a fluorescent lamp device using a spiral arc tube in order to achieve a reduction in size with a long discharge path is known.
JP 2004-71555 A

  However, in the fluorescent lamp device of Patent Document 1, as shown in FIGS. 1 and 3 in the document, the ends 92 and 93 of the arc tube 2 that bends and curves in a spiral shape are received by the receiving port of the holder 6. The arc tube 2 is fixed to the holder 6 by rotating and inserting it into 63 and 64 and applying the adhesive 65.

  Therefore, the end portions 92 and 93 which are part of the light emitting portion in the arc tube are accommodated in the holder, and there is a problem that visible light emitted from the end portion is not emitted to the outside and light loss occurs.

  In addition, the electrodes 8 are sealed in the end portions 92 and 93 of the arc tube 2, and the holder made of synthetic resin is in a state close to the electrodes.

  For this reason, there is a problem that the resin portion of the holder 6 adjacent to the end portions 92 and 93 of the arc tube deteriorates due to long-term use due to heat generated when the arc tube is turned on.

  Furthermore, when the end of the arc tube becomes black and becomes high temperature at the end of the lamp life, the holder may be abnormally heated and melted by this heat.

  In order to avoid this problem, the electrode is separated from the end of the arc tube and the electrode is separated from the holder. However, since the height of both electrodes is increased, the distance between the electrodes is reduced and the discharge is reduced. There is a problem that the path is shortened and the luminous efficiency is lowered.

  In order to avoid melting the synthetic resin, there is a method of providing a heat shield plate such as an aluminum foil in the vicinity of the resin electrode. However, the cost increases due to an increase in the number of parts and an increase in work processes.

  An object of the present invention is to solve the above-described problems, and to increase the output luminous flux by efficiently radiating visible light from the arc tube to the outside, and to take measures against resin degradation, melting, and the like. An apparatus and lighting fixture are to be provided.

  An invention of a fluorescent lamp device according to claim 1 is an arc tube in which an end has an electrode and a curved discharge path, a phosphor layer is formed on an inner surface, and a discharge medium is enclosed; The holder surface facing the arc tube and the holder surface portion are formed so as to protrude toward the arc tube side, and holding means for holding the arc tube end portion having the electrode in contact with or away from the holder surface is provided at one end side. And a holder having a base provided with a conductive portion to be connected on the other end side.

  According to the first aspect of the present invention, the arc tube end is held in a state where the holder surface and the arc tube end are in contact with or spaced apart from the holder surface so as to protrude toward the arc tube. A fluorescent lamp device is configured that can efficiently radiate the light output outward and can take measures against deterioration, melting, and the like of the resin.

The holder is composed of a base in a compact fluorescent lamp, and further allowed to be composed of a partition body provided with a lighting device in a bulb-type fluorescent lamp and a cover body that holds the partition body. As long as the end portion having the electrode of the tube is held, the discharge path side may be held from the middle portion of the arc tube, that is, the end portion of the arc tube. Further, the surface on which the arc tube is held may be inside or outside.

  The arc tube holding means, for example, allows an elastic rib or the like protruding from the holder surface, but on condition that the end of the arc tube faces the holder surface in a completely floating state. For example, a part that does not contribute to light emission, such as a crushing part where the phosphor film at the end is not formed, may be in contact with the holder surface, and the end that substantially contributes to light emission is blocked. As long as it is retained.

  The holding means protruding from the holder surface may be formed integrally with the holder surface, or may be configured by attaching a separate member. Further, the material is preferably composed of a heat-resistant synthetic resin or metal, but the material is not particularly limited. In order to minimize the light loss, it is allowed to be made of a light-transmitting material.

  The “bending discharge path” is formed by bending or connecting a glass tube or the like to form a discharge path bent into a substantially U-shape or a substantially H-shape. A spirally curved discharge path is allowed.

  Further, even if the arc tube end portion is formed in a vertical or horizontal direction, the arc tube end portion may be provided so as to be spirally inclined while being inclined with respect to the holder surface of the arc tube in the holder.

  Further, the arc tube end portion may be crush sealed or stem sealed.

  According to a second aspect of the present invention, there is provided an arc tube having an electrode at its end and a curved discharge path, a phosphor layer formed on the inner surface, and a discharge medium enclosed therein; The holder surface facing the tube and the holder surface portion are formed to protrude toward the arc tube side, and holding means for holding the arc tube end portion with the electrode in contact with or away from the holder surface is connected to an external power source. A holder having a possible base on the other end; and a lighting device housed in the holder and fed with power through the base to urge the arc tube.

  According to the invention of claim 2, since the arc tube end is held in a state where the holder surface and the arc tube end are in contact with or separated from each other so as to protrude from the holder surface to the arc tube side, A fluorescent lamp device is configured that can efficiently radiate the light output outward and can take measures against deterioration, melting, and the like of the resin.

The holder is allowed to be composed of a partition body provided with a lighting device in a bulb-type fluorescent lamp and a cover body that holds the partition body. The lighting device includes a plate-like circuit board, and the base side of the circuit board A plurality of electronic components are mounted on one side or both sides of the base side and the arc tube side, and an inverter circuit for lighting the arc tube at high frequency is allowed.

  The constructed fluorescent lamp device allows a globe having a globe, a bulbless fluorescent lamp having a globe, and the like.

  The invention of the fluorescent lamp device according to claim 3 is characterized in that the inside of the arc tube bent by the holding means according to claim 1 or 2 is held.

  According to the third aspect of the present invention, a fluorescent lamp device that can radiate the light output from the arc tube to the outside more efficiently and can take measures such as deterioration and melting of the resin is configured.

  The “inner side of the arc tube” does not need to be an inner side in the strict sense that the circular cross section of the arc tube composed of a cylindrical glass tube is geometrically divided into two, for example. What is hung on the outside may be used. In short, the inside may be held so as not to substantially block visible light emitted from the outside of the arc tube.

  The invention of a fluorescent lamp device according to claim 4 is characterized in that the holding means according to any one of claims 1 to 3 holds the discharge path side from the electrode at the end of the arc tube.

  According to the invention of claim 4, a fluorescent lamp device that can efficiently radiate the light output from the arc tube outward and can further take measures such as deterioration and melting of the resin is configured.

  “Hold the discharge path side from the electrode” means that the discharge path side should be held away from the electrode so as not to be affected by the heat from the electrode as much as possible. do it.

  The invention of a lighting fixture according to claim 5 is characterized in that the fluorescent lamp device according to any one of claims 1 to 4 is used.

  According to the invention of claim 5, a lighting fixture using a fluorescent lamp device that can efficiently radiate the light output from the arc tube outward and can take measures against deterioration, melting, etc. of the resin is constituted. Is done.

  According to the first aspect of the present invention, the arc tube end is held in a state where the holder surface and the arc tube end are in contact with or spaced apart from the holder surface so as to protrude toward the arc tube. The light output can be efficiently emitted outward.

  Therefore, for example, it is possible to improve the luminous efficiency because the luminous flux can be improved even if the same arc tube as the conventional one is used, and to provide a fluorescent lamp device capable of improving the radiation efficiency and taking measures against deterioration, melting, etc. of the resin. can do.

  According to the invention of claim 2, since the arc tube end is held in a state where the holder surface and the arc tube end are in contact with or separated from each other so as to protrude from the holder surface to the arc tube side, The light output can be efficiently emitted outward.

  Therefore, for example, it is possible to improve the luminous efficiency because the luminous flux can be improved even if the same arc tube as the conventional one is used, and to provide a fluorescent lamp device capable of improving the radiation efficiency and taking measures against deterioration, melting, etc. of the resin. can do.

  According to the invention of claim 3, since the inside of the arc tube is held, the visible light emitted from the outside of the arc tube can be held without being blocked, and the light loss is further reduced. In addition, it is possible to provide a fluorescent lamp device capable of taking measures against deterioration, melting, etc. of the resin.

  According to the invention of claim 4, since the discharge path side is held from the electrode at the end of the arc tube, the holding means can be configured so as not to be affected by the heat from the electrode as much as possible, and the resin is deteriorated. It is possible to provide a fluorescent lamp device capable of further countermeasures such as melting.

  According to the fifth aspect of the present invention, there is provided a lighting fixture using a fluorescent lamp device capable of efficiently radiating the light output from the arc tube outward and capable of taking measures against deterioration, melting, etc. of the resin. can do.

  Hereinafter, embodiments of the fluorescent lamp device and the lighting apparatus of the present invention will be described.

  1 to 3 show a fluorescent lamp device according to a first embodiment of the present invention. FIG. 1 is a front view showing a part cut away, FIG. 2 is a side view, and FIG. 3 is a perspective view.

  FIG. 4 is a longitudinal sectional view showing a state in which the lighting apparatus according to the first embodiment of the present invention is installed on the ceiling surface.

  First, the configuration of the fluorescent lamp device according to the present embodiment will be described with reference to FIGS.

  Reference numeral 10 denotes a fluorescent lamp device, which includes an arc tube 11 and a holder 12, and the holder 12 constitutes a so-called compact fluorescent lamp composed of a base 13.

  In the following description, the arc tube 11 is the upper side and the base 13 is the lower side.

  The arc tube 11 is bent so as to bisect one straight tubular glass tube, and the straight region is left in the direction of the pair of end portions 11b and 11c with the central region of the bisected glass tube as the top portion 11a. Everything is spirally formed.

  The arc tube 11 is made of transparent lead-free glass and has a tube outer diameter of 9.0 to 13 mm. A phosphor layer of, for example, three wavelengths is formed on the inner surface of the glass tube.

  The arc tube 11 having a spiral shape is formed by heating and melting a straight tubular glass tube, bending it so as to bisect it in a soft state, and further dividing the central region of the bisected glass tube into the top portion 11a. As above, it is formed by winding along a mold having a groove formed in a spiral shape.

  The pair of end portions 11b and 11c of the arc tube 11 are formed in a spiral shape in which the electrode side is inclined downward in a side view and is curved outward in a top view.

  At each end 11b, 11c of the arc tube, a filament coil as an electrode 14 is supported and arranged by a pair of wells, and the pair of wells is a pair of glass tubes end 11b, 11c sealed by a pinch seal. It is connected to the lamp side wire 14a led out from the end of the glass tube through the jumet line.

  The two-to-four lamp-side wires 14a led out from the end portions 11b and 11c are connected to the terminal pins 13a of the base 13 through the holder 12 described later.

  The arc tube 11 configured as described above forms a continuous long thin discharge path that is spirally bent. The discharge path length of this discharge path is 250 to 500 mm.

  This discharge path length is a distance dimension from the filament coil of one electrode 14 to the filament of the other electrode 14 via the axis of the spiral glass tube.

  A rare gas which is a discharge medium made of a mixed gas of argon (Ar) and krypton (Kr) or the like is sealed in the arc tube 11 configured as described above.

  The holder 12 is made of a heat-resistant synthetic resin such as polybutylene terephthalanol (PBT) and the like, and a main body 12a having a substantially circular vessel shape with an open upper surface and a circular shape that closes an open portion of the upper surface. It is comprised with the cover body 12b.

  The main body 12a serves as a case for the base 13, and has two to four terminal pins 13a protruding from the bottom surface. The terminal pin is made of a conductive metal material, and is connected to a commercial power supply via a lighting device of the fixture by being inserted into a socket provided in the lighting fixture.

  The circular lid 12b serves as a holder surface of the holder 12 to hold the arc tube 11, and two ribs 12c forming a holding member on the upper surface thereof protrude outward and are integrally formed.

  As a result, the holder surface facing the arc tube 11 and the two ribs 12c that form the holding means protruding from the holder surface portion toward the arc tube are provided on one end side, and the conductive portion connected to the electrode of the arc tube 11 The holder 12 having the base 13 provided with the terminal pin 13a is provided on the other end side.

  The two ribs 12c serving as the holding members are each formed in a strip shape, and are formed so as to swing elastically from side to side with the base portion on the upper surface of the lid 12b serving as the holder surface of the holder 12 as a fulcrum. A holding portion 12d having a substantially semicircular arc shape matching the cylindrical shape of the outer peripheral surface of the arc tube 11 is formed.

  The two ribs 12c are provided so as to face each other at positions that are point-symmetric with respect to the center of the circle of the circular lid 12b, and the surface of the concave portion forming the semicircular arc shape of the holding portion 12d is outward. Place it so that it faces.

  In the figure, 12e is an insertion hole for penetrating the lamp side wire 14a of the light emitter 11 to the lower surface side of the lid 12b, and four holes are formed corresponding to the two to four lamp side wires 14a.

  Next, a configuration in which the arc tube 11 is incorporated and held in the holder 12 configured as described above will be described.

  First, the arc tube 11 in which two to four lamp-side wires 14a are led out from the end portions 11b and 11c is positioned on the upper surface of the holder 12, and the four lamp-side wires 14a are inserted into the corresponding inserts. It is inserted into the hole 14e and connected to the corresponding four terminal pins 13a of the base 13. The insertion hole 14e through which the lamp side wire 14a is inserted may be closed with an adhesive such as silicone.

  Next, in each end portion 11b, 11c of the arc tube, a portion located on the discharge path side with respect to the position of each electrode 14 is opposed to the tip portion of the two ribs 12c to form a strip shape and each elastic rib Insert downward against the elasticity of 12c.

  As a result, when the rib 12c opens outwardly against resistance and is inserted further downward, the inside of each end portion 11b, 11c of the arc tube matches the semicircular arc shaped holding portion 12d.

  Thereby, the rib 12c returns to its original position by its elastic force, and the inside of each end 11b, 11c is fitted into the semicircular arc-shaped recess of the holding portion 12d.

  As a result, each end 11b, 11c of the arc tube is held by the rib 12c, which is a holding means, in contact with or separated from the holder surface, and the electrode 14 side is inclined downward in a side view, and the upper surface The spiral end portions 11b and 11c that are curved outwardly are fitted into the semicircular arc holding portions 12d of the ribs 12c, and the arc tube 11 is elastically applied to the arc tubes 11 by the elastic force of the ribs 12c. Is securely held by the holder 12.

  When separating the arc tube 11 from the holder 12, contrary to the above, it is easy to separate the ends 11 b, 11 c of the arc tube fitted to the rib 12 c by pulling upward against the elasticity of the rib. can do.

  The inner surface of each end portion 11b, 11c of the arc tube is fitted to the holding portion 12d of each rib 12c, and the upper surface of the lid 12b serving as the holder surface of the fitting portion and each end portion and the holder is silicone or the like. Alternatively, a heat resistant adhesive may be applied to hold it more firmly.

  In the fluorescent lamp device 10 in which the arc tube 11 is held by the holder 12 as described above, the end portions 11b and 11c of the arc tube float from the holder surface of the holder 12 and are exposed to the outside, and the end portions 11b and 11c. Since the visible light emitted from the tube is not blocked, the output light flux can be increased by efficiently radiating the visible light from the arc tube outward.

  Further, since the inside of the arc tube 11 is held by the ribs 12c, the outside of the arc tube that directly contributes to light emission is not blocked by the ribs, so that visible light from the arc tube can be radiated more efficiently outward. it can.

  The fluorescent lamp device 10 configured as described above is configured as a compact fluorescent lamp having an outer diameter d1 of the arc tube 11 of about 37 mm, an overall height h1 of about 90 mm, and an arc tube length L1 of about 57 mm. Is done.

  Next, the structure of the lighting fixture which used the fluorescent lamp apparatus comprised as mentioned above as a light source is demonstrated.

  As shown in FIG. 4, reference numeral 20 denotes a downlight-type lighting fixture installed on a ceiling surface A of a store or the like, and a main body case 21 having a metal box shape having an opening 21a on the lower surface, and an opening 21a. It is comprised with the metal reflectors 22 fitted by.

  The reflector 22 is made of, for example, a metal plate such as stainless steel, and is integrally formed with a decorative frame 22a around the lower surface.

  A socket 23 containing a lighting device is installed at the center of the top plate of the reflector 22.

  The terminal pin 13a of the fluorescent lamp device 10 described above is inserted into the socket 23.

  As a result, a downlight-type lighting fixture having a compact fluorescent lamp having a spiral arc tube 11 is formed.

  Next, a second embodiment of the fluorescent lamp device of the present invention will be described.

  FIG. 5 is a longitudinal sectional view showing a part of the fluorescent lamp device according to the second embodiment, with the same reference numerals assigned to the same parts as those in the first embodiment.

  Reference numeral 30 denotes a light bulb-type fluorescent lamp, which includes an arc tube 11, a holder 31 and a globe 32.

  The holder 31 includes a partition body 33 and a cover body 34, has a partition body 33 that holds the arc tube 11 at one end side, and has a base 35 through the cover body 34 at the other end side.

  By providing the lighting device 36 on the partition 33, the lighting device is housed in the holder 31 and is supplied with power through the base 35 so as to urge the arc tube, thereby forming a so-called bulb-type fluorescent lamp.

  In the following description, the arc tube 11 is the upper side and the base 35 is the lower side.

  The arc tube 11 of the present embodiment is configured such that the end portions 11b and 11c are bent in the vertical direction to form linear end portions, and the electrodes are built in the linear portions.

  Other configurations of the arc tube 11 are the same as those in the first embodiment.

  The partition 33 that constitutes the holder 31 is formed in a form in which a substantially circular vessel is inverted with a heat-resistant synthetic resin such as polybutylene terephthalanol (PBT), and is inverted on one end side on the holder surface of the holder. The arc tube 11 is held on the upper surface of the device, and the lighting device 36 is housed on the inner surface side of the device.

  On the upper surface of the partition 33 serving as the holder surface of the holder 31, two ribs 31 c forming a holding means are formed so as to protrude outward and are integrally formed, and the rib 31 c of the arc tube 11 is formed by the ribs 31 c as in the first embodiment. Each end 11b, 11c is held.

  It should be noted that each end 11b, 11c of the arc tube is held by the rib 31c in addition to the rib 31c that holds the inclined portion of the arc tube indicated by the solid line in FIG. You may make it hold with '. Further, the rib 31c that holds the inclined portion may be omitted, and only the linear portion may be held by the rib 31c ′.

  The partition 33 constituting the holder 31 has an opening 33a on the inner surface side of the vessel, and forms a ring-shaped support rod 33b on the outer peripheral surface.

  A disc-shaped circuit board 36b mounted with an electronic component 36a constituting the lighting device 36 of the arc tube 11 is fitted into the opening 33a of the partition 33, and is fixed using a heat-resistant adhesive such as silicone. .

  The electronic component 36a includes components such as an electrolytic capacitor, a current transformer, a film capacitor, a REC (rectifier element, diode bridge), a resistor, a transistor, and a switching element such as an SCR for lighting the arc tube 11 with high-frequency power.

  These electronic components 36a are mounted on both upper and lower surfaces of a circuit board 36b formed of a disk-shaped printed circuit board, and are arranged such that relatively small components are positioned on the upper surface of the circuit board and relatively large components are positioned on the lower surface. The circuit components arranged on the lower surface are covered with the cover body 34, and some large electrolytic capacitors and the like are accommodated in the space 35 a of the base 35.

  The input end of the high-frequency lighting device composed of these electronic components 36a is electrically connected to the terminal portion of the base 35 and the output end is electrically connected to the electrode 14 of the arc tube 11 via the lamp-side wire 14a.

  Since the end portions 11b and 11c of the arc tube 11 are not inserted and accommodated in the partition 33 as a holder as in the prior art, the electronic components 36a accommodated in the partition 33 and the ends of the arc tube It can be set as the arrangement structure which the parts 11b and 11c were separated without adjoining.

  Thereby, an electronic component becomes difficult to receive the influence of the heat from the arc_tube | light_emitting_tube 11, and the reliability of the electronic component which comprises a lighting device improves.

  The cover body 34 constituting the holder has a substantially conical cylindrical shape having openings on the upper and lower sides, is made of a heat-resistant synthetic resin such as polybutylene terephthalanol (PBT), and has an upper opening portion of the cylinder. The lower surface of the support rod 33b of the partition 33 is placed on the inner surface side, and is fixed and held with a heat resistant adhesive.

  An opening of the base 35 is fitted into the opening edge of the cover body 34 below the cylinder, and is fixed by caulking or using a heat-resistant adhesive.

  The base 35 is made of a conductive metal material and is attached to a socket wired and connected to a commercial power source by means of screwing or the like. For example, the base 35 is made of an E26 type base, Are provided with a space 35a and an external thread 35b on the outer surface.

  The globe 32 is transparent or light diffusing milky white or the like, and is formed of glass or synthetic resin into a smooth curved surface having substantially the same shape as a glass bulb of a general incandescent bulb.

  The edge of the lower opening of the globe 32 is fitted into a gap formed by the support rod 33b of the partition 33 and the inner surface of the upper edge of the cover member 34, and the three members are fixed simultaneously with a heat-resistant adhesive or the like. And hold.

  The bulb-type fluorescent lamp configured as described above is configured such that the height dimension h2 of the entire lamp from the top of the globe 32 to the bottom surface of the base 35 is about 109 mm, and the maximum outer diameter d2 of the globe 35 is about 60 mm.

  As in the first embodiment, the arc tube 11 is configured such that the outer diameter d1 is about 37 mm and the arc tube length L1 is 57 mm.

  In the present embodiment, the globe 32 that covers the arc tube 11 is provided. However, a bulb-type fluorescent lamp in which the arc tube is exposed without covering the globe may be configured.

  The light bulb-shaped fluorescent lamp configured as described above is screwed into sockets of various lighting fixtures, and the lighting circuit is turned on to light up the arc tube so as to illuminate.

  Other configurations, operations, operational effects, various modifications, and the like are the same as in the first embodiment.

  In each of the first and second embodiments described above, each end portion of the arc tube is held by the rib from the holder surface of the holder with a gap, but the tip portion of each end portion of the arc tube is held by the holder of the holder. By abutting on the surface, a configuration in which two ends are held together with the holding of each end of the arc tube by the rib may be used, and the arc tube may be held more firmly on the holder. Further, a heat-resistant adhesive such as silicone may be applied to the vicinity where the two points are held so as to hold it more firmly.

  In addition, the end of the arc tube including the tip is formed into a flat shape so that the cross section is substantially elliptical, and the flat portion is brought into contact with the holder surface of the holder so that the contact area is widened. It may be configured so that it is held more stably and firmly. Further, a heat-resistant adhesive such as silicone may be applied in the vicinity of the tip portion to hold it more firmly.

  In this case, the portion where the electrode is provided becomes flat, the interval between the filament coils of the electrode can be widened, and the luminous efficiency can be increased.

  Although the arc tube is made of a glass tube, it may be made of ceramics that can form a light-transmitting hermetic container.

  If the rib serving as the holding member of the arc tube is made of a transparent synthetic resin or the like, it is possible to prevent light from being blocked by the rib and to further reduce light loss.

  Although the inside of the arc tube is held by the rib, the outside may be held. In this case, if the rib is formed of a thin metal wire, the light blocking area is reduced and the light loss can be reduced.

  The ribs are made of metal having 2 to 4 conductivity, and 2 to 4 lamp-side wires led out from the arc tube are connected to correspond to each rib, and each rib and each terminal pin (first Embodiment) or an electrical connection corresponding to the output end (second embodiment) of the lighting device, and thereby the rib for holding the arc tube may also serve as an electrical lead wire.

  According to each of the first and second embodiments, each end of the arc tube is exposed and held outward from the holder surface of the holder, so that visible light radiated from each end is blocked. Thus, the output light flux can be increased by reducing the light loss and efficiently radiating the visible light from the arc tube outward.

  Furthermore, each end of the arc tube having electrodes is exposed to the outside, and since each end is not housed in the holder as in the prior art, each end of the arc tube that generates heat is separated from the resin. Is less susceptible to heat and can prevent deterioration of the resin during lighting. Furthermore, the present invention provides a fluorescent lamp device in which the holder is not melted even when each end of the arc tube is blackened and becomes high temperature at the end of the lamp life, and measures such as resin deterioration and melting are taken. be able to.

  Further, in order to prevent the resin from being deteriorated and melted as in the prior art, it is not necessary to take a configuration in which the distance between the electrodes is shortened by separating the electrodes from each end of the arc tube, so that the luminous efficiency is not lowered. .

  Further, since the rib serving as the holding means is configured to hold the inside of the arc tube, visible light emitted from the outside of the arc tube is not blocked by the rib, and light loss can be further reduced.

  Furthermore, the ribs that serve as the holding means hold the discharge path side from the electrode position of the arc tube, making it less susceptible to heat from the electrodes, so even if the ribs are made of synthetic resin, the resin will deteriorate or melt Therefore, it is possible to provide a fluorescent lamp device in which countermeasures such as deterioration and melting of the resin are further taken.

  In addition, since the rib is made of an elastic material, the semicircular arc-shaped concave portion can be expanded by elasticity, and it can be securely held in any manner regardless of the size and diameter of the arc tube. Is possible.

  Furthermore, since the rib has a simple configuration in the shape of a strip, ribs having other types of sizes and strengths can be prepared, and can be easily provided according to the requirements of various arc tube sizes and tube diameters.

  As mentioned above, although preferred embodiment of this invention was described, this invention is not limited to each above-mentioned embodiment, A various design change can be performed in the range which does not deviate from the summary of this invention.

BRIEF DESCRIPTION OF THE DRAWINGS The front view which shows the fluorescent lamp device which is 1st embodiment of this invention, notching one part. The side view of a fluorescent lamp device. The perspective view of a fluorescent lamp device. The longitudinal section which shows the state which installed the lighting fixture which is 1st embodiment of this invention in the ceiling surface. The longitudinal cross-sectional view which shows the fluorescent lamp device which is 2nd embodiment of this invention, notching one part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Fluorescent lamp apparatus 11 Arc tube 12 Holder 12c Holding means 13 Base 14 Electrode

Claims (5)

An arc tube having an electrode at its end and a curved discharge path, a phosphor layer formed on the inner surface and enclosing a discharge medium;
A holder surface facing the arc tube and a holder surface portion projecting from the arc tube side, and holding means for holding an arc tube end portion having an electrode in contact with or away from the holder surface are provided on one end side of the arc tube. A holder having a base provided with a conductive portion connected to the electrode at the other end;
A fluorescent lamp device comprising: An arc tube having an electrode at its end and a curved discharge path, a phosphor layer formed on the inner surface and enclosing a discharge medium;
A holder surface facing the arc tube and a holder surface projecting from the holder surface portion to the arc tube side, and holding means for holding the arc tube end portion having the electrode in contact with or away from the holder surface on one end side, an external power source A holder having a base connectable to the other end side;
A lighting device housed in a holder and energized via a base to energize the arc tube;
A fluorescent lamp device comprising: 3. A fluorescent lamp device, wherein the inside of the arc tube bent by the holding means according to claim 1 or 2 is held. 4. The fluorescent lamp device according to claim 1, wherein the holding means holds the discharge path side from the electrode at the end of the arc tube. An illumination fixture comprising the fluorescent lamp device according to any one of claims 1 to 4.

Images