JP2009059611A - Compact self-ballasted fluorescent lamp and lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact self-ballasted fluorescent lamp with inner pressure rise of a cover effectively restrained, even in case a circuit board of a lighting device is arranged inside the cover in a vertical form. <P>SOLUTION: The compact self-ballasted fluorescent lamp 1 is provided with a lighting device 18 equipped with a circuit board 53 with a pair of first vent holes 28, 28 formed on an outside face except a mounting part of a base 12 of the cover and arranged inside the cover so as to get along a direction of the center line of the base and to be positioned between the pair of first vent holes 28, 28, and a holder 15 as well as a translucent globe 17 in which a bent fluorescent lamp 14 and a pair of second vent holes ventilating between the inside of the cover and an outside toward the other end of the cover are formed so as to face an inside part each of the cover zoned by the circuit board 53. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a light bulb-type fluorescent lamp that houses a lighting device having a circuit board in a vertical arrangement, and a lighting fixture equipped with the light bulb-type fluorescent lamp.

In recent years, low-efficiency incandescent bulbs have been replaced with relatively high-efficiency bulb-type fluorescent lamps in response to demands for reducing carbon dioxide (CO ₂ ) emissions. In order to replace incandescent bulbs used in various lighting fixtures with bulb-type fluorescent lamps, miniaturization of bulb-type fluorescent lamps has been promoted. For example, a bulb-type fluorescent lamp has been proposed in which a circuit board of a lighting device for lighting a fluorescent lamp is arranged vertically along the direction of the center line of the base inside a cover including the base (see, for example, Patent Document 1). ). In this conventional fluorescent lamp, the cover and globe are downsized by arranging the circuit board vertically, etc., and the appearance and light distribution characteristics similar to those of a general lighting bulb are obtained. The application rate to the lighting equipment to be used can be improved.

  By the way, when the bulb-type fluorescent lamp is miniaturized, the temperature of the circuit components constituting the fluorescent lamp and the lighting device inevitably increases. Therefore, means for suppressing the temperature increase of the circuit components is provided. For example, a fluorescent lamp device has been proposed in which a gap is formed between the holder partition member and the plate, and a communication hole is formed on the outer periphery of the cover for communicating the gap and the outside air (see Patent Document 2). . The holder partition member supports the fluorescent lamp and is heated by heat from the globe and the fluorescent lamp. At this time, the heat in the gap is released to the outside through the communication hole, so that the temperature rise of the circuit board and the circuit component of the lighting device supported by the plate is suppressed.

In addition, a configuration is known in which a pressure relief hole is provided in a cover in order to suppress a rapid increase in the internal pressure of a bulb-type fluorescent lamp (see Patent Document 3). Instead of this pressure relief hole, a configuration is also known in which a pressure relief gap is provided inside the die at the attachment portion of the die (see Patent Document 4).
JP 2006-302861 A (pages 12-14, FIG. 1) Japanese Patent Laying-Open No. 2006-269093 (page 11, FIG. 4) JP 58-71503 A (Claim 1, FIG. 1 and FIG. 3) JP 2000-173303 A (paragraph 0043, FIG. 1)

  The bulb-type fluorescent lamp of Patent Document 1 has a small cover so that a circuit board is arranged vertically. When the cover is downsized, it is not preferable to form the communication hole on the outer periphery of the cover as in the fluorescent lamp device of Patent Document 2 because the strength of the cover is reduced. Moreover, if the communication hole is formed on the outer periphery of the cover near the partition member of the holder, there is a problem that the waterproof property is impaired.

  If the cover is provided with a small hole for pressure relief as in Patent Document 3 or a gap for pressure relief is provided on the inner side of the base as in Patent Document 3, the strength is improved even with a downsized cover. There is no decline. However, when the circuit board of the lighting device as in Patent Document 1 is arranged vertically in the cover, the circuit board separates the space of the cover, so the position of the small hole or gap and the pressure If the rising space is deviated, there is a possibility that the pressure release action cannot catch up with a sudden pressure increase caused by an abnormal operation or failure of the electronic component. In this case, there is a possibility that the internal pressure of the envelope composed of the globe and cover of the bulb-type fluorescent lamp will rise, and the globe may come off from the cover or the envelope may burst.

  The present invention relates to a light bulb-type fluorescent lamp that effectively suppresses an increase in the internal pressure of the cover even when the circuit board of the lighting device is arranged vertically in the cover, and an illumination to which the light bulb-type fluorescent lamp is attached. The purpose is to provide equipment.

  The invention of the light bulb-type fluorescent lamp according to claim 1 has a base that can be attached to the socket for the light bulb on one end side, and a cover in which a pair of first ventilation holes are formed on the outer surface excluding the attachment portion of the base. And a circuit board disposed in the cover so as to be located between the pair of first vent holes and along the direction of the center line of the base, and a lighting circuit component mounted on the circuit board. A lighting device that is formed and fed with power through a base; a bent fluorescent lamp that is turned on by the lighting device; supports both ends of the fluorescent lamp and closes the other end of the cover A pair of second vent holes attached to the other end side and venting between the inside of the cover and the outside of the other end side of the cover are formed so as to face the inside of each cover divided by the circuit board. With a holder; Characterized in that it comprises a; and flops and the holder of the cover so as to cover the other end attached to the translucent glove.

  In the present invention and each of the following inventions, each configuration is as follows unless otherwise specified.

  A bent fluorescent lamp is formed from a bulb formed by heating or softening a straight tube bulb, or a bridge shape in which tubular bulbs are connected to each other at their ends, or a mold shape after bridging. Are also included.

  A screw-in type referred to as an E-type is normally used as the base, but it is not limited to this as long as it can be attached to a socket to which a general lighting bulb is attached.

  For example, the lighting device may be configured by an inverter circuit mainly composed of electronic components that turn on the fluorescent lamp by applying high-frequency power of 10 kHz or more to the fluorescent lamp. For example, the substrate is positioned vertically between both ends of the bulb of the arc tube, and may or may not be interposed between both ends of the fluorescent lamp. The lead wire led out from the fluorescent lamp is connected to the connection portion of the circuit board by, for example, a wrapping pin or soldering, and is supplied with power.

  The pair of first holes are formed in the cover so as to communicate with the space inside the cover, and the pair of second ventilation holes are formed in the holder so as to communicate with the space inside the cover.

  According to the present invention, the pair of first ventilation holes formed in the cover and the pair of second ventilation holes formed in the holder are arranged so as to face the inside of the respective covers divided by the circuit board. Therefore, even if the internal pressure suddenly increases in the space on one side or the other side of the circuit board of the lighting device arranged vertically in the cover, it can be quickly transmitted through the first and second vent holes. The pressure is released.

  According to a second aspect of the present invention, in the bulb-type fluorescent lamp according to the first aspect, the space between either one side of the circuit board or the other side and the inner side of the cover is filled with a resin, Each of the holes is formed at a position close to the base.

  According to the present invention, there is a possibility that communication between the one side of the circuit board or the other side and the inside of the cover is filled with the resin and the communication with the vent hole is blocked. Since one of the first holes always communicates with the other surface of the circuit board, even if the internal pressure suddenly rises in the space in the cover, the one of the first ventilation holes is interposed through one of the first holes. Pressure relief.

  According to a third aspect of the present invention, in the bulb-type fluorescent lamp according to the first or second aspect, the pair of first holes has a maximum diameter of 0.5 to 2.0 mm.

  According to the present invention, it is possible to perform pressure relief by the pair of first ventilation holes while ensuring rainproof and dustproof performance without impairing the strength of the cover.

  A lighting fixture according to claim 4 comprises: the light bulb shaped fluorescent lamp according to any one of claims 1 to 3; and a fixture main body provided with a light bulb socket on which the light bulb shaped fluorescent lamp is mounted. It is characterized by being.

  The instrument body is, for example, a downlight or a chandelier, but is not limited to this as long as the instrument body uses a general lighting bulb. As the socket, a screw-in type called E-type is usually used, but the socket is not limited to this as long as it is a socket to which a general lighting bulb is attached.

  According to the present invention, there is provided a lighting fixture in which the light bulb shaped fluorescent lamp according to any one of claims 1 to 3 is disposed.

  According to the present invention, even when the circuit board of the lighting device is arranged vertically in the cover, the pair of first ventilation holes formed in the cover and the pair of second communication holes formed in the holder. Since the pores are arranged so as to face the inside of the respective covers divided by the circuit board, even if the internal pressure suddenly rises in any space on one side or the other side of the circuit board, the first Pressure can be released quickly through the vent hole and the second vent hole, and an increase in the internal pressure of the cover can be effectively suppressed.

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

  1 to 4 show a first embodiment. FIG. 1 is a cross-sectional view of a light bulb-type fluorescent lamp viewed from the front side, and shows the light bulb-type fluorescent lamp of FIG. 1 with a base removed for explanation. FIG. 3 is a top view, FIG. 3 is an explanatory view of a holder of a bulb-type fluorescent lamp, and FIG. 4 is an explanatory view of a cover of the bulb-type fluorescent lamp.

  1 and 2, reference numeral 1 denotes a bulb-type fluorescent lamp. The bulb-type fluorescent lamp 1 includes a cover 13 having a base 12 at one end in the height direction and a bent shape supported on the other end of the cover 13. An arc tube 14 as a fluorescent lamp, a resin holder 15 that supports one end of the arc tube 14 and is attached to the other end of the cover 13, and a globe that covers the arc tube 14 and is attached to the cover 13 17, and a lighting device 18 housed inside the base 12, the cover 13, and the holder 15. The rated power is formed to have substantially the same appearance as that of a general lighting bulb such as a 40 W type, 60 W type, or 100 W type incandescent bulb. This general lighting bulb is defined in JIS C 7501.

  The base 12 is, for example, an Edison type E26 type, and includes a cylindrical shell 21 having a thread and an eyelet 23 provided on the top of one end of the shell 21 via an insulating portion 22.

  As shown in FIG. 4, the cover 13 is formed of a heat-resistant synthetic resin such as polybutylene terephthalate (PBT), for example, and has a cylindrical base attachment portion to which the lower end opening side of the shell 21 of the base 12 is attached on one end side. 26 is formed, and an expanded annular cover portion 27 is formed on the other end side. 4A is a bottom view of the cover 13, FIG. 4B is a side view of the cover 13, and FIG. 4C is a top view of the cover 13.

A pair of first vent holes 28, 28 are formed at 180 ° intervals across the central axis of the cover 13 at the upper end edge of the cover portion 27 adjacent to the base mounting portion 26 of the cover 13. The pair of first ventilation holes 28, 28 are formed at positions facing outward even when the base 12 is attached to the cover 13 and the lower end opening side of the shell 21 is attached to the base attachment part 26. Yes. As for the size of the first vent holes 28, 28, the maximum width (diameter) is 0.5 to 3.0 mm, and is about 2.3 mm in the present embodiment. If the maximum width exceeds 3.0 mm, the rainproof and dustproof performance is impaired, and the strength of the cover is lowered, which is not preferable. In addition, when the maximum width is less than 0.5 mm, the air flow rate is limited, so that effective pressure adjustment cannot be performed when a sudden internal pressure is generated, and the effect of releasing pressure is exhibited. I can't.
In addition, the arc tube 14 is bent at the central region of the bulb so as to divide the straight tube into two halves, and the both ends of the bulb are spiraled with the bent central region of the bulb as the top 32. It is curved. Both end portions 33a and 33b of the bulb of the arc tube 14 protrude in parallel toward one end direction opposite to the top portion 32.
For example, a phosphor of a three-wavelength emission type is formed on the inner surface of the bulb of the arc tube 14, and the bulb is filled with a rare gas such as argon (Ar), neon (Ne), or krypton (Kr), or mercury. Gas is sealed.
A pair of electrodes (not shown) are sealed by a flare stem at each end 33a, 33b of the bulb 31 of the arc tube 14. Each electrode has a filament coil suspended on a pair of jumet wires. The pair of jumet wires are, for example, sealed in a flare stem and connected to a pair of lead wires (not shown) that are led out from the flare stem and connected to the lighting device 18. That is, a pair of wires are led out from each end of the valve 31.
Cylindrical narrow tubes 36a and 36b, also called exhaust pipes attached to the flare stem, project from the end portions 33a and 33b of the valve 31 so as to communicate with each other. Each of these thin tubes 36a, 36b is sequentially sealed by melting in the manufacturing process of the arc tube 14, and the arc tube 14 is exhausted through an unsealed part of each of the thin tubes 36a, 36b and enclosed. After the gas is sealed and replaced, the capillaries 36a and 36b are sealed by fusing.

One thin tube 36a is a long tube formed so that its tip extends to the inside of the base 12, and the tip is filled with a main amalgam (not shown) as an amalgam when sealed. . The main amalgam 37 is an alloy composed of bismuth, tin and mercury, is formed in a substantially spherical shape, and has an action of controlling the mercury vapor pressure in the arc tube 14 within an appropriate range. In addition,
As the main amalgam, a material formed of an alloy in which indium, lead or the like is combined in addition to bismuth and tin may be used. Moreover, you may attach the auxiliary | assistant amalgam which has a mercury adsorption / release effect | action to the internal lead wire of an electrode.

As shown in FIG. 3, the holder 15 is formed of a heat-resistant synthetic resin such as polybutylene terephthalate (PBT), and protrudes from the disc-shaped holder portion 40 and the peripheral edge of the holder portion 40 to one end side. A cylindrical tube portion 41, an annular engagement piece portion 42 protruding outward from one end side of the tube portion 41, and a pair of substrate support portions 43 protruding in the direction of the base 12 from the lower surface of the engagement piece portion 42 , 43. Guide grooves 43a and 43a are formed along the longitudinal direction on the sides where the substrate support portions 43 and 43 are opposed to each other. 3A is a bottom view of the holder 15, FIG. 3B is a partially cutaway side view of the holder 15, and FIG. 3C is a top view of the holder 15.
The holder portion 40 is formed with a pair of insertion holes 44, 44 through which the pair of end portions 33a, 33b of the arc tube 14 are inserted. Around the pair of insertion holes 44, 44, a protective cylinder 45, 45 is integrally formed with the holder portion 40 so as to protrude toward the arc tube 14 side. By injecting an adhesive such as silicone resin or epoxy resin from the inside of the cylinder portion 41 in a state where the pair of end portions 33a and 33b of the arc tube 14 is inserted into the pair of insertion holes 44 and 44, the arc tube 14 is bonded and fixed to the holder 15. The pair of substrate support parts 43, 43 are positions offset from the center line of the holder part 40, and the position where the line connecting them is inclined with respect to the line connecting the pair of insertion holes 44, 44. Formed in a relationship.
In the holder portion 40, a pair of second ventilation holes 46, 46 are formed on a straight line that is orthogonal to the line connecting the pair of insertion holes 44, 44 and intersects the central axis of the holder portion 40. The pair of second vent holes 46, 46 are formed at an interval of 180 ° across the central axis of the holder portion 40, and the outside of the inside of the cover 13 and the other end side of the cover 13 (the arc tube 14 side). Between the space inside the globe 17). The pair of second ventilation holes 28, 28 has a maximum width (diameter) of 0.5 to 2.0 mm, and is about 1.0 mm in the present embodiment.
The globe 17 is made of a material such as transparent or light diffusing glass or synthetic resin, and has a smooth curved surface close to the shape of a glass bulb of a general lighting bulb such as an incandescent bulb. The opening edge of the globe 17 is fitted inside the cover 15 and is fixedly bonded with an adhesive having viscosity such as silicone resin or epoxy resin.

  The lighting device 18 includes a substrate 53 on which a plurality of electronic components 55 constituting the lighting circuit 54 are mounted. The base 53 is narrower on the side of the base 12 than the side of the cover 13, and is formed in a width dimension that allows the base 12 to be inserted inside the base 12, and the height dimension is longer than the width dimension. It is formed in a substantially rectangular shape.

  As shown in FIG. 1 and FIG. 2, the board 53 has both side edges of the board 53 inserted into and engaged with the guide grooves 43 a and 43 a of the pair of board mounting parts 43 and 43 of the pair of board holding parts 28 of the cover 13. Are arranged vertically along the direction of the center line of the cover 13 and the holder 15 (that is, the center line of the bulb-type fluorescent lamp 11), and are arranged at a position offset from the center line of the cover 13 and the holder part 40 Has been. That is, in a state where the base 12, the cover 13, and the holder 15 are combined, the substrate 53 is disposed vertically along the direction of the center line of the base 12 with respect to the inside of the base 12, and the base 12 Arranged at a position offset from the center line. Further, the vertically arranged substrate 53 is disposed between both end portions 33a and 33b of the valve 31, and the substrate surface has a narrow angle of about 60 ° with respect to a line connecting both end portions 33a and 33b of the valve 31. So as to be inclined. One end 33a of the valve 31 is disposed facing one surface of the surface of the substrate 53, and the other end 33b of the valve 31 is disposed facing the other surface of the surface of the substrate 53. At this time, as shown in FIG. 2, one of the pair of second vent holes 46 and 46 of the holder 15 is in a space on one surface side of the surface of the substrate 53, and the other is in a space on the other surface side of the surface of the substrate 53. They are arranged to face each other. The first vent holes 28 and 28 are also arranged so that one faces the space on the one surface side of the substrate 53 and the other faces the space on the other surface side of the substrate 53. In the cross-sectional view of FIG. 1, the surface of the substrate 53 is described so as to be orthogonal to the line connecting both end portions 33 a and 33 b of the bulb 31, but this is for the sake of explanation. It is described in a simplified manner, and actually has an arrangement relationship as shown in FIG.

  Electronic components 55 are mounted on both surfaces of the substrate 53, but on the surface of the substrate 53 on the side where the distance from the base 12 is wide, the transformer CT, capacitor C1, electrolytic capacitors C2, C3, etc. of the electronic component 55 are large. Type electronic component 55 is mounted, and on the surface of the substrate 53 on the side where the distance from the base 12 is narrow, surface mounting of a low-profile transistor, chip-type capacitor, rectifier, etc. of the electronic component 55 A type electronic component 55 is mounted. As the transistors, an IC component 63 in which a MOS-type N-channel field-effect transistor Q1 and a MOS-type P-channel field-effect transistor Q2 are used as one package component and a drive circuit is built in is used. Two electrolytic capacitors C2 and C3 are mounted in the center region in the width direction of the substrate 53 in a direction perpendicular to the substrate 53.

  Further, inside the cover 13, a heat blocking member that thermally blocks the base 12 side and the arc tube 14 side may be disposed. For example, a silicone resin or an epoxy resin is used as the heat shield member, and is injected into at least a space between the inner surface of the cover 13 and one of the one surface side and the other surface side of the substrate 53.

  Next, in order to assemble the bulb-type fluorescent lamp 11, the end portions 33a and 33b on one end side of the arc tube 14 are inserted into the insertion holes 44 and 44 of the holder 15, and an adhesive is injected from the inside of the holder 15. Then, the end portions 33 a and 33 b of the arc tube 14 are bonded and fixed to the holder 15. Insert both side edges of the substrate 53 into the substrate mounting portions 43, 43 of the holder 15, and connect the lead wire of the arc tube 14 drawn out to the inside of the partition plate 16 to the connection portion of the substrate 53 for electrical connection. .

The engagement piece portion 42 of the holder 15 is engaged with and engaged with the engagement portion provided on the inner surface of the cover 13. If necessary, a heat shielding member made of silicone resin or the like is injected into the space between the inner peripheral surface of the cover 13 and one side or the other side of the substrate 53.
One lead wire (not shown) connected to the input portion side of the substrate 53 is connected to the eyelet 23 of the base 12, and the other lead wire is disposed on the base attachment portion 26 of the cover 13, and the outer periphery of the base attachment portion 26 The fixing portion 21b of the shell 21 of the base 12 is fitted to the tip of the other lead wire, the fixing portion 21b of the shell 21 is fixed to the base mounting portion 26 of the cover 13 by caulking, and the other lead wire is Electrically and mechanically connected to the shell 21.

  A globe 17 is put on the arc tube 14, and the globe 17 is fixed to the cover 13 with an adhesive.

  The bulb-type fluorescent lamp 1 formed in this way has a maximum outer diameter of the globe of about 55 mm, a height of the entire lamp including the base 12 of about 109 mm, a lamp power including circuit loss of 10 W or less, and a total The luminous flux is about 810 lm or more, and it can be used by replacing it with a general lighting bulb equivalent to 60 W.

  The bulb-type fluorescent lamp 1 of the present embodiment includes a pair of first vent holes 28 and 28 formed in the cover 13 and a pair of second vent holes 46 and 46 formed in the holder 15. Are arranged so as to face the inside of each cover 13 divided by the internal pressure, so that the internal pressure rises rapidly in the space on one side or the other side of the circuit board 53 arranged vertically in the cover 13 Even in such a case, the pressure can be quickly released through the first and second vent holes 28 and 46. For example, in the electronic components 55 mounted on the substrate 53, when the electrolytic capacitors C2 and C3 are evaporated at the end of their life and the gas is discharged to the outside, the pressure in the cover 13 may rapidly increase. Also, the internal pressure may increase due to gas release from the mold resin due to abnormal heat generation of the film capacitor. Even when such a situation occurs, the pressure is quickly released through the first and second vent holes 28 and 46, so that the internal pressure of the envelope composed of the globe 17 and the cover 13 of the bulb-type fluorescent lamp 1 is reduced. There is no sudden rise, and it is possible to reliably prevent the glove 17 from coming off the cover 13 and the envelope from bursting. In particular, since the second vent hole 46 is provided, the pressure can be buffered by a relatively large space in the globe 17 and a sudden pressure increase in the cover 13 can be mitigated.

  Even if a heat blocking member made of silicone resin or the like is filled between one side or the other side of the circuit board 53 and the inside of the cover 13, the first vent holes 28 and 28 One of them is always in communication with the other surface of the circuit board 53 via the pair of second vent holes 46, 46. Therefore, even if the internal pressure suddenly increases in the space in the cover 13, the first passage Pressure relief is reliably performed through one of the pores 28 and 28.

  Thus, even when the circuit board 53 of the lighting device 18 is arranged vertically in the cover 13, the pair of first holes 28 and 28 formed in the cover 13 and the pair formed in the holder 15. The second vent holes 46, 46 are arranged so as to face the inside of the respective covers 13 divided by the circuit board 53, so that the internal pressure in either the one surface side or the other surface side of the circuit board 53 Even if a phenomenon in which the pressure rises rapidly occurs, the pressure can be released quickly through the first vent holes 28, 28 and the second vent holes 46, 46, and the internal pressure of the cover 13 can be reduced. Rapid rise can be effectively suppressed.

FIG. 5 is a conceptual diagram of a luminaire showing a second embodiment of the present invention.
And as shown in FIG. 5, the lightbulb-type fluorescent lamp 1 can be used for the lighting fixture 81 which is a downlight, for example. The lighting fixture 81 has a fixture main body 82, a socket 83 and a reflector 84 are attached in the fixture main body 82, and the bulb-type fluorescent lamp 11 is attached to the socket 83.

1 is a schematic cross-sectional front view of a bulb-type fluorescent lamp showing a first embodiment of the present invention. The top view which shows the light-bulb-type fluorescent lamp of FIG. 1 in the state which removed the nozzle | cap | die for description. Explanatory drawing of the holder of the lightbulb-type fluorescent lamp of FIG. Explanatory drawing of the cover of the lightbulb-type fluorescent lamp of FIG. The conceptual diagram of the lighting fixture which shows the 2nd Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Light bulb-type fluorescent lamp, 12 ... Base, 13 ... Cover, 15 ... Holder, 28 ... First vent, 14 ... Fluorescent lamp, 17 ... Globe, 18 ... Lighting device, 46 ... Second vent, 53 ... circuit board, 81 ... lighting fixture, 82 ... fixture body.

Claims (4)

A cover having a base that can be attached to the socket for the light bulb on one end side, and a pair of first vent holes formed on the outer surface excluding the mounting portion of the base;
The circuit board is disposed in the cover so as to be along the direction of the center line of the base and between the pair of first ventilation holes, and a lighting circuit component mounted on the circuit board. A lighting device fed through a base;
A bent fluorescent lamp to be lit by the lighting device;
A pair of first lamps that support both ends of the fluorescent lamp and are attached to the other end of the cover so as to close the other end of the cover, and vent between the inside of the cover and the outside of the other end of the cover. A holder formed so that the two air holes respectively face the inside of each cover divided by the circuit board;
A translucent glove attached to the other end of the cover to cover the fluorescent lamp and holder;
A bulb-type fluorescent lamp characterized by comprising:   Either one of the one side or the other side of the circuit board and the inside of the cover are filled with resin, and the pair of first holes are formed at positions close to the base, respectively. The bulb-type fluorescent lamp according to claim 1.   The bulb-type fluorescent lamp according to claim 1 or 2, wherein a maximum diameter of the pair of first holes is 0.5 to 3.0 mm. A bulb-type fluorescent lamp according to any one of claims 1 to 3;
An instrument body having a light bulb socket to which the light bulb shaped fluorescent lamp is mounted;
The lighting fixture characterized by comprising.

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