JP2009206051A - Compact self-ballasted fluorescent lamp and illuminating equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a self-ballasted fluorescent lamp obtaining a silhouette which is similar to an incandescent lamp and a further reduction in size and for which productivity is improved and to provide an illuminating equipment using the same lamp. <P>SOLUTION: The compact self-ballasted fluorescent lamp includes: a fluorescent tube 10; a holder 30 supporting the fluorescent tube; a cover 50 with a notch-like perforated section 50b formed on one end section to which the holder is connected and a mouthpiece 60 on the other end; and a lighting unit 40 with a circuit substrate 41 to which a wrapping pin 40b is attached and the circuit substrate is arranged in the cover along a line going from one end section of the cover toward the other end section so that the wrapping pin faces the perforated section of the cover and composing a lighting circuit for the fluorescent tube. The perforated section of the cover is sealed by having the holder connected to the cover. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a light bulb-type fluorescent lamp that can be used in place of an existing light bulb for general illumination and a lighting fixture using the light bulb-type fluorescent lamp.

  A holder is provided on a base that can be attached to a socket of a general lighting bulb such as an incandescent bulb, and an arc tube and a lighting device formed by bending a glass tube bulb are attached to the holder. Covered bulb-type fluorescent lamps are known.

In recent years, in order to further reduce the size by approximating the silhouette of an incandescent light bulb, a device in which a circuit board constituting a lighting device is arranged in a vertical direction in a narrow space in a cover has been proposed. (For example, refer to Patent Document 1).
JP 2007-42294 A

  As shown in the above-mentioned Patent Document 1, the assembly of the bulb-type fluorescent lamp in which the circuit board is arranged in the vertical direction is performed by combining and fixing one end side of the arc tube 1 and the holder 2 as shown in the conventional example of FIG. Next, the circuit board 3 is inserted inside the holder 2, and the outer wires w <b> 1 and w <b> 2 of the arc tube 1 drawn out inside the holder are wound around the wrapping pins 4 of the circuit board 3 and connected. Next, the cover 5 is put on the holder 2 and joined, and finally, the base 6 is fitted to the cover and fixed by caulking or bonding.

 The operation of winding the outer wires w1, w2 of the arc tube 1 around the wrapping pin 4 is performed by the wrapping tool T because the wrapping pin is close to the side wall of the holder 2 and the wrapping pin is sideways when the lamp is raised. Insertion becomes difficult.

 For this reason, it has been difficult to automate the lapping work. Although the circuit board 3 is once pulled out from the holder 2 at the time of wrapping (arrow A in the figure), the circuit board 3 can be returned to a normal position in the holder 2 after the lapping is finished (arrow B in the figure). In this case, the outer wires w1 and w2 may be loosened and electrical insulation may not be ensured sufficiently.

  For this reason, in this type of bulb-type fluorescent lamp, an important issue is how to improve manufacturability by easily and reliably wiring the outer wire of the arc tube and the circuit board.

  The present invention has been made in order to address the above-described problem, and further uses a light bulb-type fluorescent lamp capable of further miniaturization that approximates the silhouette of an incandescent light bulb and can improve manufacturability, and the lamp. It is intended to provide the lighting equipment that had been.

  The invention of the bulb-type fluorescent lamp according to claim 1 includes: a light emitting tube; a holder that supports the light emitting tube; a notch-shaped through-hole portion formed at one end to which the holder is connected; A cover provided; and a circuit board having a wrapping pin attached thereto, the circuit board being placed in the cover along a line from one end of the cover toward the other end so that the wrapping pin faces the through hole of the cover And a lighting device that constitutes a lighting circuit of the arc tube. The through hole portion of the cover is closed by connecting the holder to the cover.

 According to the present invention, the circuit board is disposed in the cover so that the wrapping pin faces the through-hole portion of the cover, whereby the outer wire of the arc tube can be wired and connected through the through-hole portion of the cover. It is possible to improve manufacturability. At the same time, the circuit board is arranged in the cover along the line from one end of the cover to the other end, so that the circuit board constituting the lighting device of the arc tube is arranged in the vertical direction along the vertical line direction. It can be accommodated, and it is possible to achieve further miniaturization that approximates the silhouette of an incandescent bulb.

  In the present invention, even if the arc tube is a bent arc tube in which, for example, three U-shaped tubes are arranged in parallel to form one discharge path, one straight tubular member is spirally formed. A spiral arc tube formed by bending may be used, and the shape thereof is not limited to a specific one. The arc tube may be covered with a globe.

  The holder may be made of an inexpensive engineering plastic such as a synthetic resin having electrical and thermal insulation properties, such as PBT (polybutylene terephthalate). Furthermore, even if it is formed of a metal including at least one of aluminum (Al), copper (Cu), iron (Fe), nickel (Ni) having good thermal conductivity, aluminum nitride (AlN), It may be made of an industrial material such as silicone carbide (SiC), or may be made of a synthetic resin such as a high thermal conductive resin.

 The cover may be made of an inexpensive engineering plastic such as a synthetic resin having electrical and thermal insulation properties, for example, PBT (polybutylene terephthalate), or may be made of the same material as the holder described above.

 The cover's through-hole is closed by connecting the holder to the cover, but sealing and closing the through-hole with a heat-resistant adhesive such as silicone resin or epoxy resin can prevent electrical insulation of the circuit board. Although it is preferable from the viewpoint of dust countermeasures, it may be closed so as to form a gap for cooling the circuit board.

 A lighting device constituting a lighting circuit for an arc tube is, for example, a circuit board such as a printed wiring board in which a lighting circuit composed of an inverter circuit mainly composed of electronic components for applying a high frequency power of 10 kHz or more to light the arc tube is formed. It is allowed to consist of The shape of the circuit board is preferably a substantially rectangular shape whose height is longer than the width, in order to achieve miniaturization, but other shapes such as a square shape may be used. It is not limited to.

  As the base, any base that can be attached to a socket to which a general lighting bulb is mounted, such as a screw-type base referred to as an E type that is normally used, is allowed.

  According to a second aspect of the present invention, in the bulb-type fluorescent lamp according to the first aspect, the holder is provided with a closing member for closing the through hole portion, and the holder and the cover are arranged from one end to the other end of the cover. They are connected to each other by sliding relative to each other in a direction substantially perpendicular to the direction of the line.

 The invention of the lighting fixture according to claim 3 comprises: a fixture main body; a socket provided in the fixture main body; and a bulb-type fluorescent lamp according to claim 1 or 2, wherein a base is connected to the socket. And

  The fixture body is a direct ceiling type, a ceiling suspended type, or a wall-mounted type, etc., and a bulb-type fluorescent lamp is exposed even if a glove, shade, reflector, etc. are attached to the body as a light control body You may do. Moreover, the lighting fixture is not limited to a single bulb-type fluorescent lamp attached to the fixture body, and a plurality of lighting fixtures may be provided.

  According to the first aspect of the present invention, the circuit board is disposed in the cover so that the wrapping pin faces the through-hole portion of the cover, whereby the outer wire of the arc tube is passed through the through-hole portion of the cover. Wiring can be connected, and the productivity can be improved. At the same time, a circuit board is disposed in the cover along a line from one end portion to the other end portion of the cover, so that a light bulb-type fluorescent lamp that can be further miniaturized to approximate the silhouette of an incandescent light bulb. Can be provided.

  According to the second aspect of the present invention, the holder and the cover are connected to each other by sliding relative to each other in a direction substantially orthogonal to the line from the one end portion to the other end portion of the cover. It is suitable for automating lamp assembly and increases torque strength. Further, the holder is provided with a closing member that closes the through-hole portion, can provide electrical insulation of the circuit board and measures against dust, and can provide a light bulb-type fluorescent lamp with a good appearance design. it can.

  According to invention of Claim 3, the lighting fixture which has an effect | action of the lightbulb-type fluorescent lamp of Claim 1 or 2 can be provided.

  Embodiments of a bulb-type fluorescent lamp and a lighting fixture according to the present invention will be described below.

  In this embodiment, a globeless bulb-type fluorescent lamp using an arc tube having three U-shaped tubes and a downlight-type lighting fixture using the lamp are configured. The configuration will be described.

  The arc tube 10 has three U-shaped tubes 11, 12, and 13, which are sequentially connected by a communication tube 14 to form one continuous discharge path, and a bent bulb. 15 is configured. Each communication pipe 14 is formed by joining the openings formed by blowing and blowing the vicinity of the ends where the pipe bodies 11, 12, 13 are connected, and then blowing them.

  The tubular bodies 11, 12, and 13 are made of a single straight circular transparent lead-free glass having an outer diameter of about 6 to 12 mm, and are formed in a U-shape that is curved at the middle portion and has a top portion. Each tubular body has a bent portion that is curved and a pair of straight pipe portions that are parallel to each other, and the valve ends 11a, 11b, 12a, 12b, and 13a are provided at the ends of the pair of straight pipe portions. 13b are formed. As shown in FIG. 4, the pipe bodies 11, 12, and 13 include a pair of valve end portions 11 a that are arranged along the triangular side around the central portion of the valve and located at both ends of the valve. 13b, that is, a pair of electrode side bulb end portions are adjacent to each other and arranged side by side at a position closer to one side than the bulb center portion.

  For example, a phosphor of a three-wavelength emission type is formed on the inner surface of the bulb 15, and an enclosed gas containing a rare gas such as argon (Ar), neon (Ne), or krypton (Kr), or mercury is contained inside the bulb. Enclosed.

  A pair of electrodes 16 is sealed by, for example, a flare stem, a stem seal, or a pinch seal at the pair of electrode side valve ends 11a and 13b located at both ends of the valve. Each electrode has a filament coil, and this filament coil is supported by a pair of linear wells. Each well is connected to, for example, an electrode side valve via a jumet wire sealed at the electrode side valve end portions 11a and 13b. The lead wire is led out from the end portion and connected to a pair of outer wires w1 and w2 connected to a lighting circuit to be described later. Each pair of outer wires w1, w2 connected to the pair of electrodes 16 is drawn out in parallel from the pair of electrode side valve end portions 11a, 13b.

  At least one of the pair of valve ends 11a, 11b, 12a, 12b, 13a, and 13b of the pipe bodies 11, 12, and 13 is sealed with a flare stem, a stem seal, or a pinch seal, for example, and is also called an exhaust pipe These thin tubes are provided in a projecting state. Each of these capillaries is sequentially sealed by fusing in the manufacturing process of the arc tube 10, and the inside of the bulb 15 is exhausted through a part of the capillaries that are not sealed, and the sealed gas is sealed and replaced. After that, sealing is performed by fusing an unsealed part of each of the thin tubes.

  Next, the configuration of a bulb-type fluorescent lamp using the arc tube 10 configured as described above will be described. In the following description, the arc tube is the upper side and the base is the lower side.

  The bulb-type fluorescent lamp 20 includes the arc tube 10 having the above-described configuration, a holder 30 that supports the arc tube, a lighting device 40 that constitutes a lighting circuit for the arc tube, a cover 50 that houses the lighting device, and a base 60 that is provided on the cover. Is done.

 The holder 30 has a substantially disk shape and is made of, for example, a heat-resistant synthetic resin material such as polybutylene terephthalate (PBT). A support hole 30a serving as a support portion of the arc tube 10 is formed on the upper surface forming the disk surface of the disk. Form through. A pair of bulb end portions 11a, 11b, 12a, 12b, 13a, 13b of the arc tube are inserted into the support hole 30a of the holder 30, and a silicone resin is formed around the outer surface of the support hole and each bulb end portion of the arc tube. A heat-resistant adhesive such as epoxy resin is applied and fixed.

 Further, a cylindrical cover portion 30b protruding from the support portion to one end side is integrally formed, and a space portion 30c having an opening is formed integrally on the lower surface of the disk. The cover portion 30b is integrally formed with a locking portion 30d that is fitted and locked to an upper end opening of the cover 50 described later.

 Further, a substantially semicircular portion of the cylindrical cover portion 30b serving as a side wall is extended to form a closing member 30e (FIG. 5). The closing member closes a through-hole portion 50b of the cover 50 described later by connecting the holder 30 to the cover 50, and is integrated in a protruding piece shape for electrical insulation of the circuit board 41 of the lighting device 40 and measures against dust. To form.

  The lighting device 40 includes a circuit board 41 including a printed wiring board on which electronic components constituting a lighting circuit such as an inverter for lighting the arc tube 10 by applying a high frequency power of 10 kHz or more are mounted. The upper part of the holder 30 is formed in a rectangular shape with the upper width being wider than the lower width so that the lower part is inserted into the space 30c of the holder 30 and the lower part is inserted into the cover 50 in the vertical direction. A circuit pattern is formed on one side or both sides of the circuit board 41, and a plurality of electronic components 40a for configuring a lighting circuit such as a lead component such as an electrolytic capacitor and a chip component such as a transistor are formed on the mounting surface. Is implemented.

  Further, four wrapping pins 40b are provided so as to protrude from one side of the circuit board 41. The wrapping pin constitutes the output terminal part of the lighting circuit, and is used for winding and electrically connecting each of the four outer wires w1, w2 led out from each electrode 16 of the arc tube 10, A total of four pairs are provided protruding in the same direction.

  The cover 50 is formed in a substantially cylindrical shape having openings at both ends of a heat-resistant synthetic resin material such as polybutylene terephthalate (PBT), for example, and the locking portion 30d of the holder 30 described above is engaged with the inner surface of the opening at the upper end. An annular mounting step 50a for stopping is formed.

  Further, at the upper end opening of the cover 50, that is, at one end to which the holder 30 is connected, a notch-shaped through hole 50b for inserting a wrapping tool formed by cutting out a substantially semicircular portion of the cylindrical side wall is formed. (FIG. 5). The through hole is a position facing and facing the wrapping pin 40 b provided to protrude from the circuit board in a state where the circuit board 41 of the lighting device 40 is accommodated in the cover 50, and the holder 30 is attached to the cover 50. It forms in the position corresponding to the closing member 30e of a holder in the connected state. Moreover, the through-hole part 50b is formed so as to have a shape and a size with which a lapping tool can be inserted into each of the four lapping pins 40b provided.

  Both side edges of the circuit board 41 are inserted into the inner peripheral surface of the lower end opening of the cover 50, and the vertical direction is taken along a line from one end of the cover 50 to the other end, that is, along the central axis oo of the cover 50. A pair of substrate holding grooves 50c for supporting in the direction are integrally formed. The substrate holding groove is formed so that the circuit substrate 41 can be arranged so as to be offset to one side with respect to the central axis oo of the cover 50.

  Further, the shell 60 a of the base 60 is attached to the outer peripheral surface of the lower end opening that is the other end of the cover 53. The base 60 is formed of an Edison type E26 type or the like, and includes a cylindrical shell 60a having a screw thread and an eyelet 60c provided on the top of one end of the shell via an insulating portion 60b. The shell 60a is made of a conductive metal, and the other end is covered with the outer peripheral surface of the lower end opening of the cover 50, and is fixed by means of heat-resistant adhesive such as silicone resin or epoxy resin, or caulking.

  Next, the assembly procedure of the bulb-type fluorescent lamp 20 configured as described above will be described.

  First, the arc tube 10 is supported on the holder 30. That is, each pair of bulb end portions 11a, 11b, 12a, 12b, 13a, 13b of the arc tube is inserted into the support hole 30a of the holder, and a silicone resin is formed around each outer surface of the support hole and each bulb end portion of the arc tube. Apply and fix heat resistant adhesive such as epoxy resin. In this state, the lead wires w <b> 1 and w <b> 2 of the arc tube 10 are arranged in a state of being led out into the space 30 c of the holder 30.

 Next, the circuit board 41 of the lighting device 40 is accommodated in the cover 50. That is, in the pair of substrate holding grooves 50 c formed on the inner peripheral surface of the lower end opening of the cover 50, the circuit board 41 is set in the vertical direction and both side edges in the width direction are fitted and fixed. At this time, the circuit board 41 is arranged so as to be shifted to one side with respect to the central axis oo of the cover 50, and is arranged so that the four wrapping pins 40b are located on one side located on the wide space side. As a result, the circuit board 41 has its wrapping pin 40b facing the through-hole portion 50b of the cover 50, and extends vertically along the line extending from one end of the cover to the other end, that is, the central axis oo of the cover 50. It is disposed in the cover in the direction, and further accommodated in a state of being offset to one side with respect to the central axis oo of the cover 50.

  Next, as shown in FIGS. 1 and 5, the holder 30 that supports the arc tube 1 and the cover 50 that supports the circuit board 41 of the lighting device 40 are set in an automatic machine for lapping, and the through-hole of the cover The wrapping tool T is inserted from the portion 50b, and the outer wires w1 and w2 are respectively wound around the wrapping pins 40b provided in total of four pairs, and soldered and connected as necessary. At this time, since the through-hole portion 50b is formed in the cover 50, there is no need to pull out the circuit board from the holder for lapping as in the prior art, and lapping can be performed in a stable state.

  Next, the holder 30 supporting the arc tube 10 is put on the cover 50 as indicated by the arrow in the drawing, and the holder locking portion 30d is inserted while the upper side portion of the circuit board 41 is inserted into the space portion 30c of the holder. The cover is fitted and locked to the annular mounting step 50a of the cover, and is fixed and integrated with a heat-resistant adhesive such as silicone resin or epoxy resin. As a result, the through hole portion 50b for inserting the wrapping tool of the cover 50 and the projecting piece-like closing member 30e of the holder 30 are matched to block the light transmitting portion 50b. That is, the through hole 50 b of the cover 50 is closed by connecting the holder 30 to the cover 50.

  In this state, a heat blocking member 70 made of silicone resin, epoxy resin, or the like is injected from the lower end opening of the cover 50 to fill a space between the inner peripheral surface of the cover and the circuit board 41 and the electronic component 40a.

  Next, one lead wire (not shown) connected to the input terminal of the circuit board 41 of the lighting device 40 is connected to the eyelet 60c of the base 60, and the other lead wire is connected to the outer peripheral surface of the lower end opening of the cover 50. It arrange | positions in the formed base attachment part. In this state, the shell opening portion of the base 60 is fitted to the outer peripheral surface of the lower end opening portion of the cover 50 to sandwich the lead wire, and further, the outer peripheral surface of the opening portion of the shell 60a is connected to the outer peripheral surface of the lower end opening portion of the cover 50. By caulking and fixing, the other lead wire is electrically connected to the shell 60a.

  Before fixing the base 60, a heat conductive member is also injected into the base, and the base 60 is combined, so that the circuit board 41, the electronic component 40a, etc. of the lighting device 40 and the inner surface of the base 60 are heated. The conductive member 71 is thermally connected.

  The bulb-type fluorescent lamp 20 configured as described above can be used for a downlight-type lighting fixture 80, for example, as shown in FIG.

  This lighting fixture has a fixture main body 81, and a socket 82 and a reflector 83 corresponding to an E26-type base to which a general incandescent bulb or the like is mounted are attached, and the incandescent lamp attached to the socket 82 is attached. Instead of the bulb, the bulb-type fluorescent lamp 20 of the present invention can be mounted.

  Even if a bulb-type fluorescent lamp is mounted instead of an incandescent lamp and the lamp is lit, the bulb-type fluorescent lamp 20 is approximated to a general illumination bulb such as an incandescent bulb or downsized to the same shape as described above. Therefore, the root portion is securely attached without being caught by the reflector, and the light distribution of the fixture can be approximated or the same as that of a general lighting bulb such as an incandescent bulb, and is arranged in the lighting fixture. A sufficient amount of light is applied to the reflector 83 in the vicinity of the socket 82, and the appliance characteristics as the optical design of the reflector 83 designed for an incandescent lamp can be obtained.

  As described above, according to the present embodiment, the circuit board 41 of the lighting device 40 is arranged in the vertical direction along the line extending from one end of the cover 50 to the other end, that is, the central axis oo of the cover 50. By being arranged and housed, it is possible to achieve further miniaturization that approximates the silhouette of the incandescent light bulb, particularly the constricted root portion.

  As a result, it is possible to provide a light bulb-type fluorescent lamp having versatility that can be substituted for an incandescent bulb as a light source for an incandescent bulb-type lighting fixture, and the application rate to the lighting fixture is further increased. By using it as an alternative, it is possible to provide a power-saving and highly efficient lighting environment.

  At the same time, the circuit board 41 of the lighting device 40 is disposed in the cover so that the wrapping pin 40b faces the through-hole portion 50b of the cover 50, whereby the outer wires w1 and w2 of the arc tube 10 are connected to the through-hole portion of the cover. Since the wiring can be connected from the side via 50b, a simple configuration in which a notch-shaped through-hole portion is simply formed, a space for lapping work can be secured, and the circuit board 41 can be secured without being pulled out. Wrapping can be performed in a fixed state. As a result, automation is possible, and a step of shifting the circuit board is not required, and reliable electrical connection can be performed, wiring work is facilitated, and productivity can be improved.

  Further, since the circuit board is not pulled out as in the prior art, and the step of shifting is not required, and the outer wires w1 and w2 are less likely to be loosened. It is also possible to omit covering the wire with an insulating tube.

  Further, since the through-hole portion 50b of the cover 50 is closed by the closing member 30e of the holder 30, electrical insulation of the wrapping pin portion of the circuit board 41 can be surely performed and at the same time a countermeasure against dust can be taken. Can be further improved in reliability. Also, the appearance design is good.

  In addition, since the circuit board 41 of the lighting device 40 is connected to the wiring in a state where it is accommodated on the cover 50 side having the base 60, the following manufacturing efficiency can be achieved. That is, this type of light bulb-type fluorescent lamp needs to be completed by assembling parts that are completely different in material and function from the arc tube, electric circuit, resin member, and glass globe. For this reason, parts with different materials, functions, etc. are manufactured at the respective specialized factories, and these are collected and completed at the final assembly factory. For this reason, there is a method of integrated production in one factory, but a very large capital investment is required.

  On the other hand, in this embodiment, the circuit board 41 and the base 60 of the lighting device 40, which are electrical components, are accommodated in the cover 50, and are in the state of completed electrical components as independent components. For this reason, even in a factory with a small assembling capability such as an arc tube manufacturing factory that handles glass, the arc tube 10 can be applied to the cover 50 that is a completed electrical component without assembling electrical components such as the circuit board 41 and the base 60. It is only necessary to attach the, so that it can be easily assembled.

  In addition, since the circuit board 41 and the base 60 of the lighting device 40 are accommodated in the cover 50 and are in a state of completed electrical components independently as components, electrical tests such as lighting circuits and electrical connections are performed. It becomes possible to perform it independently before combining the arc tube. Incidentally, conventionally, as shown in FIG. 11, the circuit board is inserted inside the holder to which the arc tube is fixed, the outer wire of the arc tube is wound around the wrapping pin and connected, and the holder is covered with the cover, Finally, the base is fixed to the cover. For this reason, electrical tests such as lighting circuits and electrical connections can be performed only after the whole is assembled.

 Further, since the circuit board 41 and the base 60 of the lighting device 40 are accommodated in the cover 50 and are in the state of an electrical component that is independently completed as a component, as shown in FIG. An advantageous resin-integrated die can be formed.

  That is, the base 60 ′ is integrally formed on the lower end opening side of the cover 50 made of resin, and the contact piece 61 made of a conductor such as a copper plate is formed on the surface of the cylindrical shell 60a ′ provided with the thread of the base. Install. The surface of the contact piece is formed so as to be a thread continuous with the thread of the shell, and both ends are bent inside the shell to form a contact portion 61a with the input terminal portion of the circuit board 41. Further, a through hole 62 is formed at the top of the lower end side of the shell 60a ′. In the circuit board 41, one input terminal portion 40d is formed at the side edge portion, and the other input terminal portion 40e made of a wire is formed at the lower end portion.

  The circuit board 41 of the lighting device 40 configured as described above is inserted into the resin-integrated base 60 'in the vertical direction from the cover 50 in the same manner as described above, and one input terminal portion 40d at the side edge of the circuit board is inserted. Contact is made with the contact portion 61a provided inside the shell, and the other input terminal portion 40e made of the wire at the lower end is passed through the through-hole 62 and soldered to cut the excess wire to form the base. . Thereby, the base can be formed integrally with the cover, and an inexpensive bulb-type fluorescent lamp can be configured.

  In addition, since the outer wires w1 and w2 of the arc tube 10 are configured to be connected from the side via the through holes 50b of the cover 50, the light emission is performed on the cover 50 that houses the circuit board 41 of the lighting device 40. It is possible to adopt a so-called slide movement method in which the holder 30 of the tube 10 is fitted from the lateral direction, and the productivity can be further improved.

  That is, as shown in FIG. 8, guide rails 90 and 91 having hook-like cross sections that are engaged with each other are integrally formed on the space 30 c of the holder 30 and the inner surface of the upper end opening of the cover 50, and then the holder 30 is wrapped. The guide rail 90 is engaged with the guide rail 91 of the cover 50 (FIG. 8B), and the holder 30 is slid in the lateral direction (arrow direction in the figure) to join the holder and the cover. That is, the holder 30 and the cover 50 are connected to each other by being relatively slid in a direction substantially orthogonal to a line (a central axis oo of the cover) from one end portion to the other end portion of the cover. Note that this bonding portion may be bonded and fixed with a heat-resistant adhesive such as silicone resin or epoxy resin. The arc tube 10 is fixed to the support portion on the upper surface side of the holder so as not to protrude into the space 30c of the holder 30 so as not to hinder the sliding operation of the guide rails.

  With the above configuration, it is possible to adopt a slide movement method as a coupling means between the holder 30 and the cover 50, which is suitable for automating the assembly of the bulb-type fluorescent lamp, and by engaging the guide rails with each other, The holder 30 and the cover 50 are engaged with each other in the direction (the direction of the central axis oo of the cover), and a light bulb-type fluorescent lamp that is strong against vertical pulling can be provided. At the same time, the engagement of the guide rail can increase the strength against torque generated by rotating the bulb in the direction of twisting with respect to the socket.

  Furthermore, by adopting the slide movement method, as shown in FIG. 9, the connection between the circuit board 41 of the lighting device 40 and the arc tube 10 is not wrapping, and it is also possible to adopt a plug-in method. That is, a connection terminal portion 92 composed of four metal receiving terminals adapted to four wrapping pins is provided in the holder 30 and connected to the outer wire of the arc tube 10. Thus, the holder 30 is slid in the horizontal direction (arrow direction in the figure), and each of the four metal receiving terminals is inserted and connected to the four wrapping pins, and the holder and the cover are combined. The bonding portion may be bonded and fixed with a heat-resistant adhesive such as silicone resin or epoxy resin. According to this, an electrical connection can be performed only by combining the holder 30 and the cover 50, and further automation can be achieved and productivity can be improved.

  As described above, in the present embodiment, the through hole portion 50b of the cover 50 and the closing member 30e of the holder 30 are matched to close the light transmitting portion 50b, but the matched portion has heat resistance such as silicone resin or epoxy resin. The adhesive may be applied to close the gap.

 In addition, after the outer wires w1 and w2 of the arc tube 10 are wrapped on the wrapping pins 40b of the circuit board 41 of the lighting device 40, a heat blocking member 70 made of silicone resin or epoxy resin is injected from the lower end opening of the cover 50. Then, the space between the inner peripheral surface of the cover and the circuit board 41 and the electronic component 40a... Is filled, but the heat blocking member 70 is injected into the cover 50 before wrapping, and the inner peripheral surface of the cover and the circuit board 41 and the electronic components 40a... May be wrapped, and then the outer wires w1, w2 may be wrapped with the circuit board fixed with resin. According to this, the circuit board 41 of the lighting device 40 is securely fixed with the resin in the cover 50, and lapping can be performed in a more stable state, and further reliable wiring connection can be performed.

  Further, the outer wires w1 and w2 of the arc tube 10 and the wrapping pins 40b of the circuit board 41 are electrically connected by lapping. However, the electrical connection is not limited to wrapping. A method of connecting wires by soldering or welding, or a method of connecting directly to a circuit pattern of a circuit board by soldering or welding may be used.

  Furthermore, although the globeless bulb-type fluorescent lamp in which the arc tube 10 is exposed is configured, a bulb-type fluorescent lamp with a globe may be configured. Also in this case, a silhouette approximate to or the same appearance as a general lighting bulb such as an incandescent bulb can be obtained, and the application rate to various lighting fixtures can be further improved.

 Further, as shown in FIG. 10, when the insulating rib 93 is integrally formed from the inner surface of the cover 50 and the circuit board 41 of the lighting device 40 is inserted into the cover 50 in the vertical direction, four wrapping pins are provided. You may comprise so that it may be located between 40b. Thus, the wrapping pins are reliably insulated by the insulating ribs 93 made of a resin having electrical insulation, and the insulation coating of the outer wire can be omitted, and the manufacturing can be further improved. The insulating rib 93 may be integrally formed on the holder 30 side instead of the cover 50, and when the holder and the cover are combined, the insulating rib of the holder may be inserted between the wrapping pins.

 In addition, in FIGS. 7-10 which show a modification, the same code | symbol was attached | subjected and demonstrated to the same part as FIGS.

  Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the scope of the present invention.

The perspective view which shows roughly the assembly state of the lightbulb-type fluorescent lamp in embodiment of this invention. Sectional drawing which looked at the same bulb-type fluorescent lamp from the direction perpendicular to the surface of the circuit board. Sectional drawing which looked at the same bulb-type fluorescent lamp from the direction parallel to the surface of the circuit board. The top view which shows roughly the positional relationship of the arc_tube | light_emitting_tube of a bulb-type fluorescent lamp and a circuit board. FIG. 2 is a view corresponding to FIG. 2 showing the assembled state of the bulb-type fluorescent lamp. The figure which shows schematically the cross section of the lighting fixture which similarly used the bulb-type fluorescent lamp. Sectional drawing of the nozzle | cap | die part in the 1st modification of a bulb-type fluorescent lamp similarly. Similarly, the 2nd modification of a lightbulb-type fluorescent lamp is shown, (a) is a perspective view which shows an assembly state roughly, (b) is the figure which looked at the engagement state of the guide rail from the front. The perspective view which shows roughly the assembly state of the 3rd modification of a light bulb-type fluorescent lamp similarly. Sectional drawing which looked at the cover in the 4th modification of a bulb-type fluorescent lamp similarly from the upper surface. The perspective view which shows the lapping process of the conventional bulb-type fluorescent lamp.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10: Light-emitting tube 20: Light bulb-type fluorescent lamp 30: Holder 30e: Closing member 40: Lighting device 40b: Wrapping pin 41: Circuit board 50: Cover 50b: Through-hole part 60: Base 80: Lighting fixture 81: Appliance main body 82: socket

Claims (3)

Arc tube;
A holder for supporting the arc tube;
A cover having a notch-shaped through hole formed at one end to which the holder is connected, and a base provided at the other end;
A circuit board is provided in the cover along a line from one end of the cover to the other end so that the wrapping pin faces the through hole of the cover. A lighting device constituting a lighting circuit of
And the through-hole portion of the cover is closed by connecting the holder to the cover. The holder is provided with a closing member that closes the through hole portion, and the holder and the cover are connected to each other by relatively sliding in a direction substantially perpendicular to a line from one end of the cover to the other end. The bulb-type fluorescent lamp according to claim 1. An instrument body;
A socket provided on the instrument body;
The bulb-type fluorescent lamp according to claim 1 or 2, wherein a base is connected to the socket;
The lighting fixture characterized by comprising.

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