JP2010212073A - Ballast-free fluorescent lamp and lighting device - Google Patents

Abstract

A bulb-type fluorescent lamp and an illuminating device that facilitate the connection work between a light-emitting tube and a lighting device by regulating the positional relationship between the direction of a lead wire to be crushed and sealed at both ends of the light-emitting tube and the arrangement of circuit boards The purpose is to provide.
A circuit board vertically disposed along a central axis direction inside a cover including a base is arranged so as to be orthogonal to an imaginary line connecting the central axes of valve ends, and the central axis inside the cover When viewed from the direction, each bulb end is sealed by crushing sealing so that two imaginary lines connecting a pair of lead wires connecting the electrodes sealed at each bulb end are parallel. When connecting the lighting device and the lighting device, it is possible to easily regulate the contact of the lead wire, and the lead wire is crushed and sealed at the end of the bulb, so that the regulation and connection work of the lead wire sealing direction becomes easy. .
[Selection] Figure 1

Description

  The present invention relates to a bulb-type fluorescent lamp and an illumination device including the bulb-type fluorescent lamp.

  A bulb-type fluorescent lamp has a light-emitting tube having a bent bulb, a cover with a base attached to one end and a light-emitting tube supported on the other end, a lighting device housed in the cover, a cover covering the light-emitting tube It consists of a glove attached to the end side.

  In order to reduce the size of the bulb-type fluorescent lamp, the circuit board of the lighting device housed in the cover is arranged vertically along the height direction, and a part of the board is arranged inside the base. The structure is known (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 2007-48728

  As described above, by arranging the circuit board of the lighting device housed in the cover in a vertical arrangement, there is a risk that problems such as contact between the lead wires may occur in the work of connecting the arc tube and the lighting device. In order to prevent this, if the lead wire is covered with an insulating tube, the assembling workability deteriorates.

  The present invention has been made in view of such circumstances, and by connecting the arc tube and the lighting device by restricting the direction of the lead wire to be crushed and sealed at both ends of the arc tube and the arrangement relationship of the circuit board, An object of the present invention is to provide a bulb-type fluorescent lamp and a lighting device that facilitate the above.

  The bulb-type fluorescent lamp according to claim 1 has a cover having a base at one end and a mounting end at the other end; a circuit board on which a plurality of electronic components and wrapping pins are mounted, the circuit board including the base A lighting device housed in the cover vertically along the central axis direction on the inside of the cover; and a bulb that is bent and formed with a pair of sealed ends on one side, when viewed from the central axis direction, An imaginary line connecting the pair of sealing end center axes is arranged at the mounting end of the cover so as to be orthogonal to the surface of the circuit board, and the electrode sealed at each valve end is connected. And arc tubes sealed at the end portions of the bulbs by crushing and sealing so that two virtual lines connecting the pair of lead wires are substantially parallel to each other.

  The bent valve may have a pair of end portions, for example, a single or double spiral structure.

  As the coil of the filament electrode coated with the electron radioactive substance, for example, a double coil, a triple coil, or the like is allowed.

  When viewed from the center axis direction inside the cover including the base, the imaginary line connecting the surface of the circuit board on which a plurality of components are mounted and the central axis of the pair of sealing ends is perpendicular to the direction of the central axis on the base side. When viewed, the circuit board surface on which a plurality of electronic components are mounted is disposed in a space sandwiched between a pair of valve ends where electrodes are sealed, and is not disposed between a pair of valve ends. included. That is, the imaginary line connecting the valve central axes and the circuit board are not in a parallel relationship.

  The arc tube and the lighting device are connected by winding the lead wire drawn out from the pair of bulb end portions around a wrapping pin protruding from the circuit board.

  The circuit board on which a plurality of electronic components and wrapping pins are provided is arranged vertically along the direction of the center line inside the cover including the base, and the four wrappings provided on the circuit board are provided. The pins may be arranged side by side close to each other, or may be arranged side by side so as to be separated by two, or two wrapping pins may be arranged on both sides of the substrate. Absent.

  “The two imaginary lines connecting the pair of lead wires connecting the electrodes sealed at each valve end portion are sealed at each valve end portion by crushing sealing so that they are substantially parallel to each other” Indicates that the virtual line connecting the lead wires is not on the same line, and when the two virtual lines are extended to the appearance of the bulb-type fluorescent lamp, the virtual lines do not intersect with each other, and the bulb-type fluorescent lamp appearance Also included are those that are not completely parallel, such that imaginary lines meet each other at positions extending further apart.

  Note that the lighting device may be composed of an inverter circuit mainly composed of electronic components that apply a high-frequency output to the arc tube to light the arc tube.

  The cover body may be either for supporting the arc tube indirectly or directly. When the arc tube is indirectly supported, it is preferable to use a holder that can be attached to the other end of the cover.

  A screw-in type called E-type is usually 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.

  Further, it may have a glove that covers the arc tube, and the shape is preferably substantially the same as the silhouette of a general incandescent bulb, but it may be spherical or cylindrical. Further, the material such as glass or resin on which a light diffusion film is formed is not limited.

  According to a second aspect of the present invention, there is provided an illuminating device comprising: the light bulb-type fluorescent lamp according to the first aspect; and an instrument body to which the light bulb-type fluorescent lamp is attached.

  According to the light bulb shaped fluorescent lamp of claim 1, the circuit board arranged vertically along the central axis direction inside the cover including the base is arranged so as to be orthogonal to a virtual line connecting the central axes of the bulb ends. In addition, when viewed from the inside central axis direction of the cover, each valve end is crushed and sealed so that two imaginary lines connecting a pair of lead wires connecting the electrodes sealed to each valve end portion are substantially parallel to each other. Since the lead wire is easily sealed, the lead wire is crushed and sealed at the end of the bulb when connecting the arc tube to the lighting device, and the lead wire is sealed. Direction regulation and connection work become easy.

  According to the illuminating device of the second aspect, since the light bulb shaped fluorescent lamp according to the first or second aspect is provided, an illuminating device having the effect of the light bulb shaped fluorescent lamp can be provided.

1 is a partially longitudinal front view showing a bulb-type fluorescent lamp according to a first embodiment of the present invention. The front view of the arc tube shown in FIG. The bottom view which shows the positional relationship of the arc tube shown in FIG. 1 and a circuit board. The bottom view which shows the positional relationship of the arc tube and circuit board which concern on the 2nd Embodiment of this invention. The schematic block diagram which shows the illuminating device which is embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In addition, the same code | symbol is attached | subjected to the same or equivalent part in several attached drawing.

  1 is a partially longitudinal front view showing a bulb-type fluorescent lamp according to a first embodiment of the present invention, FIG. 2 is a front view of the arc tube shown in FIG. 1, and FIG. 3 is an arc tube of the bulb-type fluorescent lamp. FIG. 4 is a bottom view showing the positional relationship between the arc tube and the circuit board according to the second embodiment of the present invention, and FIG. 5 is an illumination according to the embodiment of the present invention. It is a schematic block diagram which shows an apparatus.

  As shown in FIG. 1, a bulb-type fluorescent lamp 1 has a cover 3 having a base 2 at one end (lower end in FIG. 1) in the height direction (tube axis direction), and the other end (upper end in FIG. 1). The arc tube 4 supported on the side, the holder 5 attached to the cover 3 supporting one end side of the arc tube 4, the arc tube 4 is covered and the periphery of the holder 5 is covered on one end side and attached to the cover 3. A lighting device 7 housed inside the globe 6, the base 2 and the cover 3 is provided. The bulb-type fluorescent lamp 1 has a size and appearance close to those of a general lighting bulb defined in JIS C 7501 such as incandescent bulbs with rated power of 40 W type, 60 W type, and 100 W type, for example.

  The base 2 is an Edison type E26 type or the like, and includes a cylindrical shell 2a having a thread and an eyelet 2c provided on the top of one end of the shell 2a via an insulating portion 2b. The other end side of the shell 2 a is covered with one end portion of the cover 3 and fixed by an adhesive or caulking.

  The cover 3 has a cover main body 3a in which an inverted frustoconical portion and a cylindrical portion integrally reduced in diameter in FIG. 1 with a heat-resistant synthetic resin such as polybutylene terephthalate (PBT) are integrally formed. A shell 2a of the base 2 is attached to one end (lower end in FIG. 1) of the cover body 3a, and an annular opening is attached to the other end side (upper end side in FIG. 1) of the cover body 3a. An end 3b is formed.

  In this attachment end 3b, the lower cylindrical opening end of the holder 5 is placed and fixed on the annular convex step portion 3c inside the connecting portion between the truncated cone portion and the cylindrical portion of the cover body 3a. ing.

  That is, the holder 5 is formed in a covered cylindrical shape with a heat-resistant synthetic resin such as PBT, for example, on the peripheral edge of the lower surface of the disk-shaped substrate portion 5a forming the lid portion, on one end (lower end in FIG. 1) side. A projecting cylindrical cylindrical portion 5b is integrally coupled, and the lower end of the opening in FIG. 1 of the cylindrical portion 5b is fixedly engaged with the convex stepped portion 3c of the cover body 3a.

  The holder 5 protrudes into a gap between the electrode sealing end portions 4a and 4b and a supporting recess for placing and supporting the pair of electrode sealing end portions 4a and 4b of the arc tube 4 on the substrate portion 5a. A cylindrical protrusion 5c that restricts the radial displacement is provided. The substrate portion 5a is formed with insertion holes 5d and 5e on the outside of the cylindrical projection 5c, and the insertion holes 5d and 5e are formed from a pair of electrode sealing end portions 4a and 4b of the arc tube 4, respectively. The thin tubes 4c projecting outward and the lead wires 4d1, 4d2, 4d3, and 4d4 shown in FIG. 2 are inserted respectively.

  The globe 6 is formed of a material such as transparent or light diffusing glass or synthetic resin into a smooth curved surface that is close to the shape of a glass bulb of a general lighting bulb such as an incandescent bulb. That is, the globe 6 is integrally connected with a substantially cylindrical reduced diameter portion 6b that is gradually reduced in diameter to a smaller diameter than the spherical portion 6a at the lower end in FIG. 1 of the spherical portion 6a formed in a substantially spherical shape. The spherical portion 6 a has a maximum diameter portion 6 c that indicates the maximum diameter of the globe 6. The reduced diameter portion 6b is formed with an opening end 6d at one end (the lower end in FIG. 1) of the globe 6, and the edge of the opening end 6d is fitted inside the opening mounting end 3b of the cover 3. For example, it is bonded and fixed by an adhesive such as silicone resin or epoxy resin.

  The arc tube 4 has a spiral portion 4e that is the upper portion of FIG. 1 and a pair of straight portions 4f that are the lower portion (bulb end portion), which are connected together.

  The spiral portion 4e is formed by bending a straight circular glass bulb having an outer diameter of, for example, 8.5 mm into almost equal folds, and winding it around a mold (not shown) with the folded portion 4g at the equally divided position as the top end. And formed into a double spiral shape.

  The glass bulb is formed with a phosphor film made of rare earth metal oxide or the like on the inner surface over almost the entire length, and a pair of electrodes 4j and 4h are respectively sealed at both ends in the axial direction. 4a and 4b are formed.

  The pair of electrodes 4h and 4i are connected by a pair of lead wires 4d using a filament coil made of tungsten, for example, and are crushed and sealed together with a thin tube (exhaust pipe) 4c at the valve end portions 4a and 4b. , 4b is led to the outside and connected to the lighting device 7. Note that the lead wires 4d drawn from the bulb end portions 4a and 4b are drawn and connected substantially parallel to each other in the direction in which the wrapping pins 7c of the lighting device 7 are arranged in parallel.

  A discharge medium such as argon or krypton gas is sealed in the glass bulb, and a thin tube 4c communicating with the inside of the pair of electrode sealing end portions 4a and 4b is projected. Mercury or amalgam is accommodated in the thin tube 4c.

  The spiral portion 4e is accommodated in a spherical portion 6a on the top end 6d side having the maximum diameter portion 6c of the globe 6, and the spiral diameter of the spiral portion 4e corresponds to the inner surface shape of the spherical portion 6a of the globe 6. Gradually increases toward the maximum diameter portion 6c, maximizes the spiral diameter at the maximum diameter portion 6c of the globe 6, and further reduces the spiral diameter corresponding to the reduced diameter of the lower half of the spherical portion 6a of the globe 6. The diameter is gradually reduced, and the straight portion 4f is integrally coupled to the upper end portion in FIG.

  The straight part 4f is a pair of spiral terminal parts of the spiral part 4e, and the lower part in FIG. 1 of the glass bulb on the side of the pair of electrode sealing end parts 4a and 4b is placed below the cylindrical part 6b of the globe 6 in the axial direction. The pair of straight electrode sealing ends 4 a and 4 b are arranged in parallel to be inserted into the supporting recess of the holder 5. The straight portion 4f has a discharge path length shorter than that of the spiral portion 4e, and thus is also formed as a short discharge path portion.

  In the lighting device 7, the vertical substrate 7 a on which the lighting circuit pattern is formed is fitted and fixed in a pair of vertical grooves on the inner surface of the base 2, for example. That is, the base 2 is formed with a pair of longitudinal grooves facing in the diameter direction on the inner surface thereof in the axial direction of the base 2, and both side edges in the width direction of the vertical substrate 7 a are fitted and fixed in the longitudinal grooves. ing. The vertical substrate 7a is configured as a single-sided or double-sided substrate, and a plurality of electronic components 7b, 7b,... That are lighting circuit components such as lead components such as electrolytic capacitors and chip components such as transistors are mounted on the mounting surface. In addition, four wrapping pins 7c1, 7c2, 7c3, and 7c4 are projected in a straight line on the side opposite to the base 2 side, that is, on the arc tube 4 side so as to be equally spaced.

  Next, FIGS. 3 and 4 show a specific configuration of the positional relationship between the arc tube 4 and the circuit board 7c. Four wrapping pins 7c1 to 7c4 mounted on the circuit board 7 are arranged on the surface of the board, and when viewed from the longitudinal direction of the lamp, they are crush-sealed tubules that are substantially center portions of the pair of bulb end portions 4a and 4b. The virtual line a connecting 4c and the circuit board 7 are in a substantially orthogonal relationship. Further, the imaginary line b connecting the pair of lead wires 4d1 to 4d4 is crushed and sealed to the pair of valve end portions 4a and 4b so as to keep the parallel relationship, and is connected to the wrapping pins 7c1 to 7c4.

  As shown in FIG. 3, an imaginary line b connecting a pair of lead wires 4d1, 4d2 and 4d3, 4d4 drawn from the arc tube 4 attached to the holder 5 is parallel, and the imaginary line b and the bulb end are connected. Since a circuit board that is orthogonal to the imaginary line a connecting the central axes of the parts and the plane is orthogonal to the imaginary line b between the pair of valve ends, the wrapping pin is located at any position on both sides of the circuit board 7a Even when the four lead wires 4d of each electrode are arranged, it is easy to maintain a predetermined interval, and it is possible to easily connect to the wrapping pin 7c. Furthermore, even in the operation of heating and crushing and sealing the side surfaces of the pair of valve end portions 4a and 4b, the pair of valve end portions 4a and 4b are simultaneously heated by positioning the heating burner between the valve straight portions 4f. Manufacturing costs can be reduced. In addition, after the heating, by inserting one of the crushing and sealing devices into the heating burner between the valve end portions 4a and 4b, the crushing direction can be reliably regulated, so that the manufacturing work is facilitated.

  The crushing sealing direction of FIG. 4 is inclined at about 45 ° C. with respect to the imaginary line a so that the crushing sealing surface faces the wrapping pin 7c. In this way, the crushing sealing portion is heated from both side surfaces of the pair of straight portions and crush-sealed, so that the sealing device is not inserted between the straight portions 4f. Since there is no movement between the straight portions 4f which are a narrow space, the sealing device contacts the valve and the valve is not damaged, so that the work of the sealing process can be facilitated. Further, in the step of wrapping and connecting the lead wire 4d to the wrapping pins 7c1 to 7c4, the pair of lead wires 4d1 to 4d4 sealed to the valve end portions 4a and 4b are crushed and sealed so as to face the wrapping pins. Therefore, mutual contact can be further suppressed.

  An example of a specific configuration of the bulb-type fluorescent lamp 1 configured as described above is as follows. That is, the arc tube maximum outer diameter (spiral outer diameter) of the arc tube 4 is 54 mm, the height h 1 of the arc tube 4 is 64 ± 1 mm, and a pair of electrodes are sealed from the horizontal central axis Oa of the maximum diameter portion 4 k of the arc tube 4. The height h2 to the outer surface of the ends 4a, 4b is about 40 mm. The length of the discharge path between the pair of electrodes 4i and 4j is 360 to 610 mm, and differs depending on the bulb diameter of the glass bulb. For example, when the glass bulb diameter (bulb diameter) is 8 mm, the discharge path length is 476 mm, and when the bulb diameter is 9 mm, the discharge path length is 374 mm. Further, the outer diameter of the base 2 is 26 mm, and the maximum width w1 (30.5 mm) between the straight portions 4f and 4f of the arc tube 4 is about 1.17 times the outer diameter φ3 of the base 2.

  Therefore, according to this bulb-type fluorescent lamp 1, it is possible to obtain an appearance similar to a general lighting bulb.

  According to the bulb-type fluorescent lamp 1 of the present embodiment, the virtual lines b connecting the lead wires 4d1 to 4d4 connecting the filament electrodes 4h and 4i sealed to the bulb ends 4a and 4b are substantially parallel to each other. Since the circuit board 7a is arranged vertically so that the virtual line connecting the central axis of the pair of bulb ends and the circuit board 7 are substantially orthogonal to each other, the arc tube 4 and the lighting device 7 In the connection work, when the lead wires 4d1 to 4d4 are wired to the wrapping pins 7c1 to 7c4, the lead wires can easily maintain a predetermined interval. Therefore, it is possible to easily suppress problems such as contact between the lead wires 4d1 to 4d4 and to facilitate connection. Further, even if the lead wires 4d1 to 4d4 drawn from the valve end portions 4a and 4b are not provided with a means for guiding the lead wires 4d1 to 4d4 to the wrapping pins 7c1 to 7c4 or a contact suppressing means, wiring work can be easily performed and the lead wire 4d1 Problems such as contact of ˜4d4 can be suppressed.

  FIG. 5 is a schematic configuration diagram of the illumination device 11 of the present invention. The lighting device 11 is a lighting device such as a downlight, for example, and includes a lighting fixture body 12. A socket 13 and a reflector 14 are attached in the luminaire main body 12, and the base 2 of the bulb-type fluorescent lamp 1 is attached to the socket 13 by screwing.

  According to this illuminating device 11, since the high luminous flux and high luminous efficiency spiral portion 4e of the bulb-type fluorescent lamp 1 faces downward in FIG. 5, the illuminance directly below can be improved.

  Further, since the straight portion 4f that increases the luminous flux radiated to the base 2 side of the bulb-type fluorescent lamp 1 is located on the reflector 14 side of the luminaire main body 12 and faces the reflector 14, it is reflected by the reflector 14. The reflected light can be increased.

DESCRIPTION OF SYMBOLS 1 ... Light bulb type fluorescent lamp, 2 ... Base, 3 ... Cover, 3a ... Cover main body, 3b ... Opening attachment end part of cover, 4 ... Light emission tube, 4a, 4b ... A pair of electrode sealing end part, 4c1-4c4 ... Lead wire, 5 ... holder, 5a ... holder substrate portion, 5c ... holder cylindrical support portion, 5d, 5e ... holder mounting hole, 6 ... globe, 6a ... glove opening end, 6b ... globe diameter reduction 7, lighting device, 7 a, vertical substrate of lighting device, 7 b, electronic components of lighting device, 7 c 1 to 7 c 4, wrapping pins, 11, lighting device, 12, lighting fixture body.

Claims (2)

A cover having a base at one end and a mounting end at the other end;
A lighting device having a circuit board on which a plurality of electronic components and wrapping pins are mounted, the circuit board being housed in the cover vertically along the central axis direction inside the cover including the base;
It has a valve that is bent and formed with a pair of sealed ends on one side, and when viewed from the direction of the central axis, a virtual line that connects the central axes of the pair of sealed ends is orthogonal to the surface of the circuit board As shown in the figure, the cover is mounted on the mounting end of the cover, and the two imaginary lines connecting the pair of lead wires connecting the electrodes sealed at the valve ends are crushed and sealed. Arc tube sealed at the end of each bulb by;
A bulb-type fluorescent lamp characterized by comprising: A bulb-type fluorescent lamp according to claim 1;
An instrument body to which the bulb-type fluorescent lamp is attached;
An illuminating device comprising:

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