JP4560794B2 - Fluorescent lamp device and lighting apparatus - Google Patents

Description

  The present invention relates to a fluorescent lamp device and a lighting fixture that can be used in place of an existing incandescent bulb.

  This type of fluorescent lamp device, for example, a bulb-type fluorescent lamp, has been reduced in size and weight. In recent years, it has become quite similar in appearance to a general A-shaped incandescent bulb, and is becoming more popular. .

  The demand for energy savings has increased in the background of this demand for miniaturization, and any form of lighting fixture can be used because of the social demand to replace inefficient incandescent bulbs with efficient bulb-type fluorescent lamps. There is a demand for the appearance of a small bulb-type fluorescent lamp that can be mounted as a replacement for an incandescent bulb.

  In addition, the realization of miniaturization contributes to resource saving at the same time, so that further miniaturization is demanded and high output as a lamp is also demanded at the same time.

  In order to realize this small size and high output, a further problem is to reduce the temperature in the lighting circuit for controlling the lighting of the arc tube.

  In other words, as miniaturization of light bulb-type fluorescent lamps progresses, the ratio of lamp power to the surface area of globes and circuit storage cases increases, which inevitably increases the temperature of the circuit components that make up the lamp and lighting circuit, resulting in long-term use This may cause a problem in the reliability of circuit components.

  For this reason, how to reduce the temperature of the circuit components constituting the lighting circuit is an important issue for realizing a small and high output.

  In order to solve this problem, for example, there is a bulb-type fluorescent lamp having a configuration shown in Patent Documents 1, 2, and 3 below.

  In Patent Document 1, a metal heat radiating partition plate is provided in a glove-side chamber, and a fluorescent lamp as a heat source is supported and fixed to the heat radiating partition plate, and is exposed to the outer periphery of the heat radiating partition plate. A heat radiating wall is provided, heat from the fluorescent lamp is radiated to the outside through the heat radiating partition, and the mercury vapor pressure of the fluorescent lamp is controlled to the optimum region by suppressing the temperature rise in the globe. The efficiency is maintained at high efficiency.

  In Patent Document 2, an arc tube fixing portion made of a plastic resin is provided with an aluminum film as a heat radiating portion having high thermal conductivity, heat is radiated to the outside of the arc tube, and the circuit is heated. This is to prevent transmission.

The one disclosed in Patent Document 3 is configured by integrally forming a metal partition plate and a resin holding portion as a partition body that supports the arc tube and holds the lighting circuit. Heat is transmitted from the metal partition plate having high thermal conductivity to the cover side, and the heat transmitted to the lighting circuit is suppressed to reduce the temperature rise of the lighting circuit.
Japanese Utility Model Publication No. 63-14322 JP 11-185709 A JP 2003-151307 A

  However, the technique disclosed in Patent Document 1 is not intended to suppress the temperature rise of the lighting circuit, but suppresses the temperature rise in the globe and controls the mercury vapor pressure of the fluorescent lamp to the optimum region to emit light. The efficiency is maintained at high efficiency.

  In addition, the specific configuration is that the circuit board is in contact with the back side of the flange part protruding from the inner periphery of the opening of the cover, and a partition plate is stacked on the flange part. This is a configuration in which the plate is fastened to the cover, and the assembling work is complicated and the work becomes complicated, causing a problem that causes an increase in cost.

  The thing shown by patent document 2 is a structure by which an arc_tube | light_emitting_tube fixing | fixed part is engage | inserted by the center part of a cover part. For this reason, in the state which installed the glove | globe in the cover, the heat radiating part which formed the aluminum film will be located in the glove room | chamber interior used as high temperature, and the problem that heat dissipation is not performed effectively arises.

  In addition, a coating process for forming an aluminum film on the arc tube fixing portion made of a plastic resin is required, which causes a problem of increasing costs.

  In Patent Document 3, the metal heat dissipating part is formed on the outer peripheral surface of the cover made of synthetic resin, and the metal partition plate is formed in a disc shape by a separate member from the metal heat dissipating part. Each of the chamfered connection surfaces is in surface contact with each other (see FIG. 1 of Patent Document 3).

  For this reason, the heat radiating part and the partition plate are separate bodies, and heat conduction loss from the partition plate to the heat radiating part occurs, and in order to improve this, a special case for fixing both by welding or the like is used. There is a problem that a process is required and causes a cost increase.

  In addition, in the configuration shown in FIG. 9 of Patent Document 3, as in Patent Document 2, in the state where the globe is installed, the metal partition plate is positioned in the globe chamber where the temperature is high, and heat dissipation is effectively performed. There is a problem that is not done.

  As described above, in this type of fluorescent lamp device, in order to achieve a small size and high output, how to reduce the thermal influence on the lighting circuit, simplify the configuration for reduction, and at the time of assembly How to improve workability is an important issue.

  The present invention has been made in view of the above-described conventional problems and problems, effectively dissipating the heat of the arc tube to the outside, improving the reliability by suppressing the thermal influence on the lighting circuit, and reducing the size. It is an object of the present invention to provide a fluorescent lamp device and a lighting fixture that enable high output and simplify the configuration to improve workability during assembly.

The fluorescent lamp device according to claim 1 is an arc tube; a circuit board that constitutes a lighting circuit of the arc tube; and a substantially disk shape that supports the arc tube and the circuit board, and is exposed to the outer periphery. A metal partition integrally formed with a bowl-shaped part; an electrical insulating member that supports the circuit board on the partition; a recess is formed on the inner surface side of the bowl-shaped part of the partition , and an open end is supported in the recess A translucent glove that is formed; a stepped portion is formed in the vicinity of the bowl-shaped portion of the partition, and an inclined surface in which the outer surface of the bowl-shaped portion and the outer surface of the cover member are substantially continuous with the stepped portion being in contact with one end opening A cover member supported to form an opening; a base supported at the other end opening of the cover member; and a total luminous flux of about 1500 lumens (lm) or more, total power consumption / (globe surface area + Case surface area) value of 0.06 W / square centimeter (W / cm ² ) or more It is the above .

  According to the present invention, the heat of the arc tube is effectively radiated to the outside, the thermal influence on the lighting circuit is suppressed, the reliability is improved, the miniaturization and the high output are enabled, and the configuration is simplified. Thus, a fluorescent lamp device with improved workability during assembly is configured.

  In the present invention, the arc tube is formed by bending one arc tube into a substantially U shape, joining a plurality of straight tube end portions to each other and connecting them in a substantially H shape, or spirally winding the arc tube. Various shapes are allowed, such as a flat shape having a discharge path meandering in a flat shape, and the shape is not particularly limited to a specific shape.

  Further, the arc tube configured as described above may be used alone, or a plurality of the above-described arc tubes may be prepared, and the plurality of arc tubes may be connected and used continuously. It may be.

  The metal partition is preferably a metal having high thermal conductivity, low cost and light weight, such as aluminum or an alloy of aluminum and zinc or an alloy containing aluminum. An alloy or the like may be used, and in summary, all metals having good thermal conductivity are allowed as compared with the synthetic resin constituting the conventional partition.

  Furthermore, the metal of the partition is preferably white or glossy, and a material exhibiting a surface with high light reflectance, but is not particularly limited to having these elements.

  The shape in which the partition is substantially disk-shaped does not have to be a geometrically exact circle, but may be a polygonal shape such as an octagon or a hexagon. What is necessary is just to make the substantially disc shape in the range accept | permitted with respect to a shape from an external appearance, a design viewpoint, etc.

  The configuration for supporting the arc tube on the partition is not particularly limited. For example, it is possible to form a support hole penetrating a substantially disk-shaped surface and insert the end of the arc tube into the support hole for support, or without forming a support hole penetrating. A recess for support may be formed, and the end of the arc tube may be fitted into the recess to be supported. The structure for supporting the arc tube of the partition body according to the present invention is such that the thermal connection is performed with an adhesive having a good thermal conductivity such as a silicone adhesive so that the heat of the arc tube is easily conducted to the partition body. The effect of the is improved.

  The configuration for supporting the circuit board on the partition is not particularly limited. For example, in order to achieve downsizing, it is preferable that the arc tube is supported in the partition without projecting from the partition facing the support portion of the arc tube. It may be configured to protrude from the body. Moreover, in order to make electrical insulation with a metal partition, it is preferable to support via an electrical insulation member. However, as long as the circuit board itself is subjected to electrical insulation processing, it may be supported without any special electrical insulation member, and the support configuration is not particularly limited.

  The bowl-shaped part of the partition is provided on the outer peripheral part of the disk-shaped surface so as to be exposed outward. The larger the area exposed to the outside, the better the heat dissipation effect, but it is difficult to make it too large due to problems with the appearance of the product, the exposed area is designed from the viewpoint of heat dissipation effect, appearance, design etc. What is necessary is just to select suitably as a problem.

  The bowl-shaped portion is preferably provided so as to form a continuous ring shape over the entire circumference of the outer peripheral portion of the disk-shaped surface, but it is not a condition that the ring shape is continuous over the entire circumference. The shape of the hook-shaped portion may be appropriately selected as a design problem from the viewpoint of heat radiation performance, appearance, and design, as with the area exposed to the outside described above.

  In addition, the bowl-shaped portion is formed integrally with the disk-shaped surface that supports the arc tube. For example, it may be die-cast such as aluminum, or may be a press-worked aluminum plate. The method and the like are not particularly limited.

The opening end of the globe is supported in a recess formed on the inner surface side of the bowl-shaped part of the partition body. In other words, so that the bowl-shaped part of the partition body is exposed to the outside, in other words, the action of heat dissipation. All the configurations in which the opening end of the globe is supported in the recess formed on the inner surface side of the hook-like portion of the partitioning body are allowed so as not to completely cover the hook-shaped portion that forms the opening. .

  In addition, a case in which the hook-shaped portion is partially covered with the opening end of the globe is allowed as long as the heat dissipation by the hook-shaped portion is not hindered.

The cover member is supported so that one end opening is brought into contact with a step portion formed in the vicinity of the bowl-shaped portion of the partitioning body, and the outer surface of the bowl-shaped portion and the outer surface of the cover member form a substantially continuous inclined surface. For example, a ring-shaped stepped portion is formed on the outer surface of the hook-shaped portion, an inner surface of one end opening of the cover member is brought into contact with the stepped portion, and an inclined surface in which the outer surface of the hook-shaped portion and the outer surface of the cover member are substantially continuous is formed. In other words, in order to form a substantially continuous inclined surface approximating the silhouette of a general incandescent bulb, the cover member has one end on a step formed near the bowl-shaped portion of the partition. All configurations are supported in which the openings are in contact with each other and supported so as to form an inclined surface in which the outer surface of the bowl-shaped portion and the outer surface of the cover member are substantially continuous .

  In addition, a part of the opening of one end of the cover member that is supported by the inner surface of the bowl-shaped part of the partition is also required for downsizing, appearance, and design as a product that approximates the silhouette of a general incandescent bulb. Is allowed as long as it does not inhibit.

The invention of a lighting fixture according to claim 2 comprises the fluorescent lamp device according to claim 1 .

  According to the present invention, the heat of the arc tube is effectively radiated to the outside, the thermal influence on the lighting circuit is suppressed, the reliability is improved, the miniaturization and the high output are enabled, and the configuration is simplified. Thus, a lighting fixture using a fluorescent lamp device that improves workability during assembly is configured.

According to the invention of claim 1, the heat of the arc tube is effectively radiated to the outside, the thermal influence on the lighting circuit is suppressed, the reliability is improved, and a small and high output can be achieved. Thus, it is possible to provide a fluorescent lamp device in which the operability at the time of assembly is improved by simplifying the above.
In addition, since the circuit board is supported by the partition via the electrical insulating member, the heat of the arc tube is effectively radiated to the outside, the thermal influence on the lighting circuit is suppressed, and the reliability is improved. It is possible to provide a fluorescent lamp device that enables high output, simplifies the configuration, improves workability during assembly, and further provides electrical insulation.
In addition, the partition is formed with a recess on the inner surface side of the bowl-shaped portion, and by inserting and supporting the opening end of the glove in the recess, the heat of the arc tube is effectively radiated to the outside, and is supplied to the lighting circuit. It is possible to provide a fluorescent lamp device that suppresses thermal influences, improves reliability, enables a small size and high output, and simplifies the configuration to improve workability during assembly.
In addition, the partition body is formed with a stepped portion on the outer surface of the hook-shaped portion, the one end opening of the cover member is brought into contact with the stepped portion, and an inclined surface in which the outer surface of the hook-shaped portion and the outer surface of the cover member are substantially continuous is formed. As it is supported, the heat of the arc tube is effectively radiated to the outside, the thermal influence on the lighting circuit is suppressed, the reliability is improved, the miniaturization and the high output are enabled, and the structure is simplified and assembled. It is possible to provide a fluorescent lamp device that improves the workability at the time, and further satisfies the requirements as a miniaturized product that approximates the silhouette of a general incandescent light bulb and the appearance and design of the product.
In addition, when the total luminous flux is about 1500 lumens (lm) or more and the value of total power consumption / (globe surface area + case surface area) is 0.06 W / square centimeter (W / cm ² ) or more, high output, And the fluorescent lamp device which achieved miniaturization can be provided.

According to the invention of claim 2 , the heat of the arc tube is effectively radiated to the outside, the thermal influence on the lighting circuit is suppressed, the reliability is improved, and a small and high output can be realized. It is possible to provide a luminaire using a fluorescent lamp device that is simplified to improve workability during assembly.

  Hereinafter, embodiments of a fluorescent lamp device and a lighting fixture according to the present invention will be described.

  1 to 5 show a bulb-type fluorescent lamp that is an embodiment of the present invention, FIG. 1 is a longitudinal sectional view in front view showing a part cut away, FIG. 2 is a partial longitudinal sectional view in side view, 3 is a cross-sectional view showing an enlarged main part, FIG. 4 shows a partition, (a) is a top view perspective view, (b) is a bottom view perspective view, and FIG. 5 is a perspective view of an electrical insulating member. It is.

  FIG. 6 is a cross-sectional view schematically showing a lighting fixture installed on a ceiling surface, showing a lighting fixture according to an embodiment of the present invention.

  FIG. 7 is a cross-sectional view in side view showing a part of a bulb-type fluorescent lamp that is a modification of the present embodiment.

  In the present embodiment, a bulb-type fluorescent lamp in a fluorescent lamp device is configured, and the configuration will be described.

  Reference numeral 10 denotes a light bulb-type fluorescent lamp, an arc tube 11, a partition 12 that supports the arc tube, a circuit board 13 that constitutes a lighting circuit of the arc tube 11 and is supported by the partition, and a cover that is supported by the partition 12 The glove 16 is supported by the member 14, the base 15 supported by the cover member, and the partition 12, and covers the arc tube 11.

  In the following description, the arc tube 11 is the upper side and the base 15 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 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 arc tube 11 is made of transparent lead-free glass and has a tube outer diameter of about 9.0 mm. For example, a phosphor layer of three wavelengths is formed on the inner surface of the glass tube, and the height h 1 of the arc tube is set to about 1. It was configured to 73 mm.

  The pair of end portions 11b and 11c of the arc tube 11 are formed such that each end portion is linearly opposed and is extended and positioned in the vertical direction.

  Further, each end portion 11b, 11c of the arc tube is sealed by a flare stem that constitutes an electrode sealing end portion, and the electrodes 11d, 11d are sealed by the flare stem. A filament coil suspended on the surface.

  The dumet wire is sealed to a flare stem made of lead glass, and is led out from the end portions 11b and 11c to be connected to the lamp-side lead wire.

  Two to four lamp-side lead wires led out from the respective end portions 11b and 11c are connected to output terminals of a lighting circuit to be described later.

  Further, the arc tube 11 has a narrow tube 11e attached to the flare stem communicating with the inside of the tube and sealed at one end 11c. The thin tube 11e is made of a transparent lead-free glass similar to the glass constituting the arc tube 11, and encloses a main amalgam or the like inside, and is bent into a shape along the inner shape of the cover member 14 described later. Form.

  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. Neon (Ne) may be enclosed.

  As shown in FIGS. 4 (a) and 4 (b), the partition body 12 is formed in the shape of a substantially disk-shaped shallow vessel, and is formed by aluminum die-casting on the upper surface forming the disk-shaped surface of the disk. A pair of support holes 12 a, 12 a serving as a support portion of the arc tube 11 are formed to penetrate.

  Since the partition 12 is formed by die-casting aluminum, it is easily configured without a step of coating an aluminum film on a synthetic resin as in Patent Document 2 as a conventional example.

  Also, a space 12c having an opening 12b is formed on the lower surface of the disk, and a ring-shaped bowl-shaped portion 12d exposed on the outer surface of the disk is integrally formed so as to protrude obliquely upward and outward. To form.

  A concave portion 12e formed of a ring-shaped groove is integrally formed on the inner surface of the ring-shaped bowl-shaped portion 12d, and a ring-shaped step portion 12f is integrally formed on the entire outer surface.

  A convex portion 12g for fitting and supporting one end opening of a cover member 14 to be described later is integrally formed on the entire outer surface of the step portion 12f.

  Further, the partition 12 is formed with ventilation holes 12h, 12h, which are located at equal intervals between the pair of support holes 12a, 12a and are formed of a pair of through holes communicating with the space 12c of the partition.

  The outer diameter d1 of the partition 12 forming a disk is set in the range of 40 to 60 mm, preferably in the range of 45 to 55 mm, and in this embodiment, about 50 mm. The height dimension h2 of the bowl-shaped part 12d is configured to be within a range of 3 to 20 mm, preferably within a range of 5 to 15 mm, and in this embodiment, about 7 mm. The height h2 should be 3 mm or more, preferably 5 mm or more, since the heat radiation effect can be enhanced by increasing the height h2 and increasing the area where the hook-shaped portion is exposed on the outer surface. From the viewpoint of appearance, parts cost, and design, it is not so large. In consideration of the balance with the fact that the heat dissipation effect is saturated, the upper limit of the height dimension h2 is 20 mm, preferably 15 mm.

  The lower end portions of the end portions 11b and 11c of the arc tube are inserted into the pair of support holes 12a and 12a of the partition body 12, and heat resistant materials such as silicone resin are provided around the outer surfaces of the support hole and the end portions of the arc tube. Apply adhesive and fix. As a result, the arc tube 11 is supported on the top surface of the partition 12 which is a disk-shaped surface. Moreover, each edge part 11b, 11c of the arc_tube | light_emitting_tube and the partition body 12 are thermally connected by the silicone adhesive agent, and the heat | fever of the arc_tube | light_emitting_tube 11 is efficiently conducted to the partition body 12. FIG.

  At this time, since the upper surface, which is the disk-shaped surface of the partition 12, is made of aluminum, this surface becomes a light reflecting surface, and light emitted downward from the arc tube 11 is upward on the upper surface of the aluminum. Reflected and no optical loss occurs.

  Further, the upper surface may be mirror-finished to improve the reflection performance.

  Note that the lead wire of the arc tube 11 is led out into the space 12c of the partition 12 and connected to an output terminal of a lighting circuit described later.

  Further, the narrow tube 11e passes through the support hole 12a of the partition 12 and further passes through the circuit board 13 of the lighting circuit to be described later, along the inner shape of the cover member 14, and the lower end sealed with the main amalgam is in the base 15 Arranged to be inserted.

  The circuit board 13 is mounted with a circuit component 13a constituting a lighting circuit of the arc tube 11, and the circuit component 13a is a component for constituting a lighting circuit for lighting the arc tube 11 at high frequency using an inverter or the like. It comprises electronic components such as a diode for rectifying the commercial power supply voltage, a smoothing electrolytic capacitor, a transistor or field effect transistor as a switching element, a resonance and ballast winding, a resonance capacitor, and a switching control component.

  These circuit components 13a are mounted on both upper and lower surfaces of a circuit board 13 made of a printed circuit board having a disk shape with a diameter of about 40 mm, and relatively small components are mounted on the upper surface of the circuit board 13 and relatively large components. Are arranged so as to be located on the lower surface, and the circuit components arranged on the lower surface are arranged so that the cover member 14 and some components are accommodated in the space 15 a of the base 15.

  The circuit board 13 on which the circuit component 13a is mounted as described above is fitted into the opening 12b on the lower surface of the partitioning body 12 through the cap-shaped separator 13b serving as an electrical insulating member, and heat resistant such as silicone resin. Secure with adhesive.

  The separator 13b has a shallow cap shape as shown in FIG. 5 and is made of a heat-resistant and electrically insulating synthetic resin such as polybutylene terephthalate (PBT). The circuit board 13 is formed in the opening of the cap. Fit and fix with heat-resistant adhesive such as silicone resin.

  The assembly of the separator 13b and the circuit board 13 thus integrated is fixed to the opening 12b of the partition 12 so that the separator 13b is interposed between the partition 12 and the circuit board 13.

  Thereby, the partition 12 and the circuit board 13 which are metal are supported by the partition 12 in the state electrically insulated by the isolation body 13b. At the same time, the circuit board 13 is supported while being thermally insulated from the partition 12.

  In addition, a pair of small holes 13c and 13c are formed in the separator 13b, and the lead wire of the arc tube 11 is inserted into the small holes 13c and 13c and connected to the output terminal of the circuit board 13.

  Further, the small tube 11e of the arc tube 11 is inserted into one small hole 13c, and the small hole penetrating therethrough is formed along the inner shape of the cover member 14.

  The pair of small holes 13c and 13c of the separator 13b is inserted into the lead wire and the thin tube 11e, and then closed with a heat-resistant adhesive such as silicone resin, so that the heat from the lower end of the arc tube 11 passes through the small hole. You may comprise so that it may not be transmitted to the board | substrate 13. FIG.

  The cover member 14 has a substantially conical cylindrical shape having openings at the top and bottom, and is made of a heat resistant synthetic resin such as polybutylene terephthalate (PBT).

  The cover member 14 is formed with a ring-shaped concave groove 14a on the inner surface of an opening at one end above the cylinder, and the convex portion 12g of the step portion 12f formed on the outer surface of the flange-shaped portion 12d of the partition body. The outer surface of the hook-shaped portion and the outer surface of the cover member are forcibly fitted using the elasticity of the synthetic resin to form an upwardly inclined surface, and a substantially continuous surface approximating the silhouette of a general incandescent bulb. To form.

  At this time, the cover member 14 can be supported on the partition body 12 by a simple mounting operation by fitting the concave groove 14a to the convex portion 12g, which is shown in Patent Document 1 as a conventional example. There is no need to tighten the screws together.

  In addition, you may make it fix more firmly by apply | coating heat resistant adhesives, such as a silicone resin, to the ditch | groove 14a and the convex-shaped part 12g.

  A base 15 is fitted and supported on the outer surface of the opening at the other end below the cover member 14.

  The base 15 may be fixed more firmly by applying a heat-resistant adhesive such as silicone resin.

  The base 15 is made of a conductive metal material, and is attached to a socket wired and connected to a commercial power supply by being electrically connected by means such as screwing. For example, the base 15 is made of an E26 type base, A space portion 15a is formed on the outer surface and a male screw portion 15b is formed on the outer surface.

  Both terminal portions of the base 15 and the input terminals of the circuit board 13 are electrically connected by lead wires.

  The globe 16 is made of milky white or the like having transparency or light diffusibility, and is formed of glass or synthetic resin so as to have a smooth curved surface substantially the same shape as a glass bulb of a general incandescent bulb.

  The lower opening end of the globe 16 is fitted into a recess 12e formed on the inner surface side of the bowl-shaped portion 12d of the partition, and is fixed with a heat-resistant adhesive such as silicone resin.

  By adopting a configuration in which the opening edge of the globe 16 is fitted into the recess 12e, positioning becomes easier when the globe 16 is attached to the partition 12, and connection strength is also improved.

  At this time, when the silicone adhesive dries, a part of the solvent contained in the adhesive evaporates to increase the pressure in the globe 16, and the pressure is increased by a pair of passages formed in the partition 12. There is no escape from the pores 12h, 12h to the cover member 14 via the space 12c of the partitioning body, the small holes 13c of the separator 13b, and the through holes of the circuit board 13, and the pressure in the globe does not increase.

In particular, the support hole 12a of the partition member 12, there is a high gas-tightness glove inner space since the silicone adhesive is applied to fix the light emitting tube end in 12a, a pair of vent holes 12h, 12h Thus, ventilation to the cover member 14 side is appropriately performed. Thereby, the inside of a glove becomes high voltage | pressure and the possibility that a glove will be damaged can be eliminated. A similar effect can be obtained when the internal pressure of the globe increases as the temperature in the globe increases.

  The bulb-type fluorescent lamp constructed as described above has a maximum outer diameter D1 of the globe of about 65 mm, a total height H1 of about 133 mm, a lamp power including circuit loss of 23 W or less, and a total luminous flux. Is constructed as a compact, high-power bulb-type fluorescent lamp with an E26 base of approximately 1500 lumens (lm) or more, can be replaced with an incandescent bulb equivalent to 100W, and can be screwed into sockets of various lighting fixtures. Turns on and lights up.

  When the bulb-type fluorescent lamp configured as described above is turned on, the temperature of the arc tube 11 rises to heat the air in the globe, and in particular, the temperature near the ends 11b and 11c having the electrodes 11d and 11d rises. The partition 12 is heated and the temperature rises due to heat conduction and heat dissipation from the hot air in the globe 16 and the end portions 11b and 11c of the arc tube 11.

  However, in the present embodiment, the partition 12 is a metal having good thermal conductivity such as aluminum, the height of the outer periphery exposed to the outside is about 7 mm, and the outer diameter d1 is about 50 mm. Are integrally formed.

  For this reason, the partition 12 whose temperature has risen is deprived of heat by the convection of the integrally formed bowl-shaped portion 12d with the outside air, and the entire partition is cooled.

  At this time, the partition 12 is integrally formed with a bowl-shaped portion 12d, and the metal partition plate and the metal heat radiating portion are not separate members as in Patent Document 3, which is a conventional example. There is no conduction loss of heat from the tube, and it is effectively transmitted to the bowl-shaped portion 12d which is a heat radiating portion and cooled by outside air.

  As a result, the temperature of the whole partition 12 falls, and the temperature rise of the circuit board 13 and the circuit component 13a supported by the partition is suppressed.

  Furthermore, since the heat emissivity of aluminum is as low as 0.1 or less, heat radiation from the back surface of the partition 12 to the circuit board 13 side through the space 12c is also kept low.

  As a result, the thermal influence on the lighting circuit for controlling the lighting of the arc tube 11 can be suppressed, and the reliability of the circuit component 13a can be increased. Thus, a compact fluorescent lamp 10 that achieves high output is configured. .

Here, the small size and the high output are particularly remarkable that the value of total power consumption / (glove surface area + case surface area) is 0.06 W / square centimeter (W / cm ² ) or more, but 0.10 W / Square centimeters or more is an effective range for miniaturization and high output in this embodiment. The case surface area is the sum of the areas exposed on the outer surfaces of the partition 12 and the cover member 14. Here, it is desirable that the area exposed to the outside of the bowl-shaped portion 12d of the partition 12 is within a range of 7 to 25 square centimeters. If the lamp power is less than 7 cm ² , the heat dissipation effect cannot be expected with respect to the arc tube having a lamp power of 20 W or more. If the lamp power exceeds 25 W / cm ² , the heat dissipation effect is saturated, and the effect corresponding to the material cost of the partition 12 cannot be obtained.

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

  As shown in FIG. 6, reference numeral 20 denotes a downlight type lighting fixture installed on a ceiling surface X of a store or the like, and a main body case 21 having a metal box shape having an opening 21 a on the lower surface, and an opening 21 a. 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 into which a cap of a bulb-type fluorescent lamp is screwed is installed at the center of the upper surface plate of the reflector 22.

  The base 15 of the bulb-type fluorescent lamp 10 is screwed into the socket 23. As a result, a downlight type lighting fixture in which the light bulb-shaped fluorescent lamp 10 having the spiral arc tube 11 is installed is configured.

  The lighting fixture configured in this manner irradiates light to a reflector in the vicinity of the socket arranged in the lighting fixture by making the light distribution of the light bulb shaped fluorescent lamp as the light source approximate that of a general incandescent bulb. The amount is sufficiently secured, and the instrument characteristics as the optical design of the reflector can be obtained.

  In the present embodiment, the bowl-shaped portion 12d of the partition 12 is provided so as to form a continuous ring shape over the entire circumference of the outer peripheral portion of the disk-shaped surface. However, as shown in FIG. The part 12h may be formed, and the cutout part 12h may be closed with a piece part 14b formed by extending one end opening of the cover member 14.

  Further, the notch 12 h ′ formed in a part of the ring may be closed with a protruding piece 16 a formed integrally with the opening edge of the globe 16.

Furthermore, although the partition 12 is configured by die-casting aluminum, it may be configured by pressing an aluminum plate.

  In addition, although the pair of air holes 12h and 12h are formed in the partition body 12, one air hole or two or more air holes may be formed.

  Since aluminum has a low thermal emissivity of 0.1 or less, the outer surface exposed to the outside of the saddle-shaped portion 12 of the partition is formed, for example, in an uneven or satin shape to increase the surface area, You may make it raise the thermal emissivity of an outer surface part by giving a white alumite process.

  Especially when white paint or white alumite treatment is applied, when the bulb-type fluorescent lamp is turned on with a lighting fixture, the reflectance of the hook-shaped portion 12d exposed to the outer surface of the bulb is increased, and the appliance efficiency can be increased. In addition, the appearance and the design are good, and the merchantability can be improved.

  In a space 12c formed by the partition 12 and the separator 13b, a heat insulating material made of, for example, glass wool or vacuum beads is accommodated, and heat from the arc tube 11 is cut off to circuit board 13 and circuit component 13a. It may be configured so that heat is not further transferred to the.

  Further, the globe 16 is configured to have a substantially conical shape, a reflective film is formed on the inner wall of the globe corresponding to the side surface of the arc tube 11, and the bottom surface of the cone that is a radiation portion of light from the arc tube 11 is made transparent. Alternatively, a so-called reflex type bulb-type fluorescent lamp may be formed.

  In addition, as the bulb-type fluorescent lamp, instead of the bulb-type fluorescent lamp (A-type) and the reflex-type bulb-type fluorescent lamp (R-type) approximated to the incandescent lamp shape described above, a ball-type bulb-type fluorescent lamp ( G type) and a cylindrical light bulb type fluorescent lamp (T type) may be used.

  Further, it may be a compact fluorescent lamp device that has a flat plate shape used as a planar light source and incorporates a lighting device. You may comprise a lighting fixture using these illustrated fluorescent lamp apparatuses.

  The base is not limited to the E26 type, but may be an Edison base such as the E17 type.

  According to the present embodiment, the partition 12 that supports the arc tube 11 is made of aluminum metal, and the hook-shaped portion 12d that is exposed on the outer surface is integrally formed. Since the heat effect on the lighting circuit is suppressed, the reliability of the circuit component 13a can be improved, and the external dimensions of the lamp are approximately the same external dimensions as general incandescent bulbs, and the size is small and the output is increased. It is possible to provide a bulb-type fluorescent lamp that is configured as a light bulb-type fluorescent lamp that can be replaced with various incandescent bulbs.

  Further, the arc tube 11, the circuit board 13, the cover member 14 and the globe 16 which are the main components of the bulb-type fluorescent lamp are all supported by a partition 12 made of metal, and the partition 12 is the arc tube. Therefore, it is possible to provide a bulb-type fluorescent lamp having a long life, because the above-mentioned components can be firmly supported over a long period of time without being deteriorated by heat generated from the light, and further by ultraviolet rays.

  Further, since the partition 12 is integrally formed with the bowl-shaped part 12d, there is no heat conduction loss from the arc tube and is effectively transmitted to the bowl-shaped part 12d which is a heat radiating part and cooled by the outside air.

  Moreover, since the partition 12 is formed by aluminum die-casting, it is simply configured without a step of coating an aluminum film on a synthetic resin as in the conventional example, and does not cause an increase in cost.

  Since the partition 12 is made of aluminum, it is lightweight and does not increase the weight of the bulb-type fluorescent lamp.

  Furthermore, since the heat emissivity of aluminum is as low as 0.1 or less, heat radiation from the back surface of the partition 12 to the circuit board 13 side through the space 12c is also kept low.

  Furthermore, since the upper surface which becomes the disk-shaped surface of the partition 12 is made of aluminum, this surface becomes a light reflecting surface, and light emitted downward from the arc tube 11 is reflected upward by the upper surface of the aluminum. And no optical loss occurs.

  When the partition 12 is made of polybutylene terephthalate (PBT), which is conventionally used instead of aluminum, the upper surface of the partition is changed to brown by heat and ultraviolet rays from the arc tube, and the light reflectance is reduced. However, according to the present embodiment, since it is made of aluminum, it is not discolored and the light reflectance is not lowered.

  Furthermore, when the partition is made of synthetic resin, the deterioration caused by decomposition of the resin along with discoloration becomes gas and is released into the globe, and the problem that the light transmittance decreases due to adhesion to the inner surface of the globe is long-term use. Although it occurs, according to the present embodiment, since it is made of aluminum, it is not decomposed to generate a deteriorated product, and the light transmittance of the globe is not lowered.

  Further, since the partition 12 has the through holes 12h and 12h penetrating therethrough, when the silicone adhesive dries, the inside of the glove 16 becomes a high pressure and the possibility of the glove being damaged can be eliminated.

  According to the present embodiment, since the circuit board 13 is supported by the partition via the separator 13b made of an electrically insulating member, the metal partition 12 and the circuit board 13 are electrically insulated by the separator 13b. In this state, the circuit board 13 is supported in a state where it is thermally insulated from the partition body 12, and the temperature rise of the circuit board can be further suppressed.

  Further, the cover member 14 has a configuration in which the ring-shaped concave groove 14a is forcibly fitted and supported on the convex portion 12g of the bowl-shaped portion 12d of the partition body simply using the elasticity of the synthetic resin. As described above, it is not necessary to tighten together with screws, and the assembly work is simplified.

  Further, the outer surface of the bowl-shaped portion and the outer surface of the cover member are substantially continuous upwardly inclined surfaces, and a substantially continuous surface approximating the silhouette of a general incandescent bulb can be formed.

  According to the present embodiment, since the globe 16 is supported by the partition body 12 simply by fitting the opening edge of the globe 16 into the recess 12e, the screws 16 are fastened together with screws as in the conventional example. There is no need to do this and the assembly work is simplified.

 Next, another embodiment of the present invention will be described with reference to FIG.

   FIGS. 8A and 8B show a fluorescent lamp device composed of a light-emitting tube meandering in a flat shape in a circle. FIG. 8A shows a side view and FIG. 8B shows a top view.

 That is, the fluorescent lamp device 30 has a substantially disc shape having a housing portion 31 in which a lighting device is incorporated, and a metal partition body 32 integrally formed with a flange-like portion 32a that is exposed outwardly on the outer peripheral portion; An arc tube 33 attached to the lower surface side of the partition 32 and meandering in a plane in a circle, a translucent glove 34 covering the lower surface side of the partition 32 together with the arc tube 33, and an upper surface of the partition 32 It is composed of a base portion 35 of the GX53 format provided integrally with the base.

 A lighting fixture using the fluorescent lamp device 30 configured as described above is inserted into a circular hole-shaped main body accommodating portion 37 of a socket device 36 installed on a ceiling surface X or the like indicated by a broken line in FIG. The pin 35 is connected to the connection fitting of the socket device 36 by slightly rotating the main body 32, and is configured as a ceiling-mounted lighting fixture that is electrically and mechanically held.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above-described embodiment, and various design changes can be made without departing from the scope of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The longitudinal cross-sectional view of the front view which cuts off one part and shows the bulb-type fluorescent lamp which is embodiment of this invention. The partial longitudinal cross-sectional view of the side view similarly. Sectional drawing which expands and shows the principal part of the lightbulb-type fluorescent lamp which is embodiment of this invention. The partition used for the lightbulb-type fluorescent lamp which is embodiment of this invention is shown, (a) is a perspective view of a top view, (b) is a perspective view of a bottom view. The perspective view of the electrical insulation member used for the lightbulb-type fluorescent lamp which is embodiment of this invention. Sectional drawing which showed the lighting fixture which is embodiment of this invention, and showed the lighting fixture installed in the ceiling surface schematically. Sectional drawing of the side view which notches and shows a part of bulb-type fluorescent lamp which is a modification of this embodiment. The other Example of the fluorescent lamp apparatus of this invention is shown, (a) is a side view, (b) is a top view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Fluorescent lamp apparatus 11 Light-emitting tube 12 Partition 12d A bowl
12e recess
12f Step 13 Circuit board
13b Electrical insulating member 14 Cover member 15 Base 16 Glove
20 Lighting equipment

Claims (2)

Arc tube;
A circuit board constituting the lighting circuit of the arc tube;
A metal partition that is substantially disk-shaped and supports the arc tube and the circuit board, and is integrally formed with a flange-like portion that is exposed outwardly on the outer periphery;
An electrically insulating member for supporting the circuit board on the partition;
A translucent glove in which a recess is formed on the inner surface side of the bowl-shaped portion of the partition , and an open end is supported in the recess ;
A cover that is formed so as to form a stepped portion adjacent to the bowl-shaped portion of the partition, and that has an opening at one end in contact with the stepped portion and forms an inclined surface in which the outer surface of the bowl-shaped portion and the outer surface of the cover member are substantially continuous. With members;
A base supported by the other end opening of the cover member;
The total luminous flux is about 1500 lumens (lm) or more, and the total power consumption / (globe surface area + case surface area) value is 0.06 W / square centimeter (W / cm ² ) or more. Fluorescent lamp device. A lighting fixture comprising the fluorescent lamp device according to claim 1 .

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