JP4780082B2 - Electrodeless discharge lamp device and lighting fixture - Google Patents

Description

  The present invention relates to an electrodeless discharge lamp device such as a fluorescent lamp device and a germicidal lamp device that emits and emits a discharge gas sealed in a loop-shaped bulb by electromagnetic induction, and a lighting fixture.

2. Description of the Related Art Conventionally, an electrodeless discharge lamp device that emits light by exciting a discharge gas sealed in a loop-shaped bulb by electromagnetic induction is known. For example, as an electrodeless discharge lamp device, a loop-shaped bulb in which a discharge gas containing mercury vapor is sealed, a ring-shaped core surrounding the bulb, an induction coil wound around the core, and an induction coil connected to the induction coil There has been proposed a high-frequency power source for supplying a high-frequency current and a compensation loop and a compensation loop circuit network for supplying a current to the compensation loop so as to remove noise (see Patent Document 1).
Japanese Patent Laid-Open No. 11-86799

  However, in the device described in Patent Document 1, since it is necessary to provide the compensation loop network as described above, the structure becomes complicated, and the startability is improved by reducing the start voltage. is not.

  In general, in the case of an electrodeless discharge lamp device using a loop-shaped bulb as described above, a high starting voltage is required to connect discharge in a loop shape at the start of starting, and the starting start voltage increases as the discharge path becomes longer. It becomes difficult to start.

  In this case, for example, it is conceivable that a conductor is provided along the axial direction of the bulb so that the conductor can function as a starting auxiliary conductor that assists starting for lighting. However, it is necessary to arrange the starting auxiliary conductor along the axial direction of the loop-shaped valve, and it is difficult to hold the starting auxiliary conductor in a state of being arranged along the axial direction of the valve. I am troubled.

  It is an object of the present invention to provide an electrodeless discharge lamp device and a lighting fixture that can be easily manufactured because the auxiliary starting conductor can be easily arranged substantially along the axial direction of the bulb.

  In order to solve the above-mentioned problem, claim 1 of the present invention is an electrodeless discharge lamp device for lighting a discharge gas enclosed in a tubular bulb having a loop shape by exciting and emitting light by electromagnetic induction. A starting auxiliary conductor for assisting starting for lighting, and a conductor holding member disposed in a section forming portion having a through hole formed inside the loop-shaped bulb, The electrodeless discharge lamp device is provided, wherein the electrode holding device is held by the conductor holding member so that its axial direction is substantially along the axial direction of the bulb.

  According to a second aspect of the present invention, it is preferable that the starting auxiliary conductor includes a reflecting surface that receives light emitted from the bulb and reflects the received light to the front side through the through hole.

  As in claim 3, the conductor holding member is preferably connected to the attachment member or the luminaire main body when the electrodeless discharge lamp device is attached to the luminaire main body by the attachment member.

  A fourth aspect of the present invention includes the electrodeless discharge lamp device according to any one of the first to third aspects, and a lighting fixture main body to which the electrodeless discharge lamp device is attached by an attachment member. A lighting apparatus is provided.

  According to the first aspect of the present invention, the conductor holding member is disposed in the section forming portion having a through-hole partitioned inside the loop-shaped valve, and the starting auxiliary conductor is held by the conductor holding member. For example, even when forming a loop shape along the axial direction of the valve, it can be easily arranged.

  According to the second aspect of the present invention, the start-up auxiliary conductor is provided with a reflecting surface that receives light emitted from the bulb and reflects the received light from the partition forming portion to the front side through the through hole. The conductor can function as a starting assisting member that assists starting for lighting the bulb, and at the same time, the light emitted from the bulb can be efficiently irradiated by the reflecting surface.

  According to the third aspect, since the conductor holding member is connected to the mounting member or the luminaire main body, the conductor holding member can be easily arranged on the partition forming portion, and the conductor holding member can be formed. It can be easy.

  According to the fourth aspect of the present invention, it is possible to easily dispose the starting auxiliary conductor along the bulb and to provide a lighting device that can be easily manufactured.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

  1 is a front view of an electrodeless discharge lamp apparatus according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1, and FIG. 3 is a cross-sectional view taken along line III-III in FIG. . FIG. 4 is a front view of a lighting fixture having an electrodeless discharge lamp device.

  As shown in FIG. 4, the electrodeless discharge lamp device 1 of the present invention is used by being attached to a lighting fixture body 101 described later, and the electrodeless discharge lamp device 1 and the lighting fixture body 101 constitute a lighting fixture 100. .

  As shown in FIGS. 1 and 2, the electrodeless discharge lamp device 1 of this embodiment includes a bulb 2, a coupler unit 3, an induction coil 4, a conductor holding member 6, and a starting auxiliary conductor 7. Yes.

  The bulb 2 is made of a tubular material made of a light-transmitting material such as glass. The valve 2 of this embodiment includes a pair of first straight pipe portion 21 and second straight pipe portion 22 that are arranged in parallel and are substantially straight, and a U length that is shorter than the straight pipe portions 21 and 22. It is composed of a pair of first bent tube portion 23 and second bent tube portion 24 in a letter shape (curved shape), and as a result, the whole has a closed loop shape (closed loop shape), An elongated through hole 91 defined inside the valve 2 so as to be surrounded by the first straight pipe part 21, the second straight pipe part 22, the first curved pipe part 23, and the second curved pipe part 24 is provided. A partition forming portion 9 (a portion indicated by a two-dot chain line in FIG. 3) is formed.

  Although not shown, a fluorescent material is applied to the inner surface of the bulb 2. Further, a discharge gas such as an inert gas or metal vapor is sealed in the bulb 2. Examples of the inert gas include neon, argon, krypton, and xenon. Examples of the metal vapor include mercury, sodium, cadmium, and zinc.

  The coupler unit 3 includes a first core 31 and a second core 32 having two identical configurations as shown in FIG. The first core 31 and the second core 32 are made of a ferrite material (MnZn). The first core 31 and the second core 32 are formed in a ring shape having a hole 33 having a diameter larger than the diameters of the first straight pipe portion 21 and the second straight pipe portion 22 of the valve 2.

  The first core 31 and the second core 32 configured as described above are configured such that the first straight pipe portion 21 and the second straight pipe portion 22 of the valve 2 are inserted into the holes 33, respectively. Are arranged on one end side (left end side in FIG. 1) of the first straight pipe portion 21 and on one end side of the second straight pipe portion 22.

  The induction coil 4 is wound around a part of each of the first core 31 and the second core 32. The induction coil 4 is connected to a high frequency power source (not shown) provided in the luminaire main body 101 so that high frequency power can be supplied. Note that the number of windings and the winding direction of the induction coil 4 are set so that discharge can be generated and maintained in the bulb 2.

  The conductor holding member 6 is for holding the starting auxiliary conductor 7, and the conductor holding member 6 of this embodiment includes a synthetic resin holding portion main body 60 and one end side of the holding portion main body 60 (the left end in FIG. 1). And a connecting portion 61 integrally formed on the side).

  As shown in FIGS. 1 and 3, the holding portion main body 60 is formed of a long shape, and its front side is substantially the entire portion from one end side to the other end side in the longitudinal direction of the partition forming portion 9. It is formed in a shape that can enter. In addition, a conductor placement portion 63 for placing the starter auxiliary conductor 7 is provided on the front side where it enters.

  The conductor arrangement part 63 is formed in a substantially U shape along the axial direction of each of the first straight pipe part 21, the second curved pipe part 24, and the second straight pipe part 22.

  As described above, the connecting portion 61 of the conductor holding member 6 is a portion where the conductor holding member 6 is connected to the mounting member 5 described later. Here, the attachment member 5 used in this embodiment will be described.

  As shown in FIGS. 1 and 2, the attachment member 5 is composed of two metal plate-like elastic members, ie, an attachment main body piece 51 and a sandwiching piece 52. The mounting body piece 51 has a substantially U shape, and includes a core holding portion 53 that holds the first core 31 and the second core 32 on the inner peripheral side.

  The sandwiching piece 52 includes a core pressing portion 54 that presses the first core 31 and the second core 32. Then, both ends of the sandwiching piece 52 are locked to an attachment main body piece 51 in which the first core 31 and the second core 32 are held by the core holding portion 53. Further, at the time of the locking, the core pressing portion 54 of the sandwiching piece 52 presses the first core 31 and the second core 32, whereby the mounting body piece 51 and the sandwiching piece 52 form the first core 31 and the second core. 32 is pinched.

  When the first core 31 and the second core 32 are sandwiched between the mounting body piece 51 and the sandwiching piece 52, the connecting portion 61 of the conductor holding member 6 is inserted between the mounting body piece 51 and the sandwiching piece 52. They are connected by being sandwiched between the pieces 52. Therefore, the conductor holding member 6 can be connected as it is using the conventional attachment main body piece 51 and the sandwiching piece 52, and can be manufactured easily.

  And by this connection, the conductor arrangement | positioning part 63 of the holding | maintenance part main body 60 of the conductor holding member 6 is maintained in the state in which the division formation part 9 entered.

  Next, the starting auxiliary conductor 7 will be described. The starting auxiliary conductor 7 is made of a long and bendable material formed in a linear shape from a conductive material. In this embodiment, a linear material having a wire diameter of about 0.5 to 2.0 mm is used with the same material (plated wire, litz wire, etc.) as the induction coil 4. The starting auxiliary conductor 7 is not limited to the form made of the same material as that of the induction coil 4, and can be made of, for example, a copper wire. Moreover, the diameter is not limited to the range of about 0.5 to 2.0 mm, and a smaller or larger diameter can be used.

  And this starting auxiliary conductor 7 is arrange | positioned at the conductor arrangement | positioning part 63 of the holding | maintenance part main body 60 in the conductor holding member 6, Thereby, from the one end side of the longitudinal direction (axial direction) of the starting auxiliary conductor 7 to the other end side, The first straight pipe part 21, the second curved pipe part 24, and the second straight pipe part 22 are extended along the axial direction.

  In this embodiment, in this state, the starting auxiliary conductor 7 is bonded to the holding body 60 by an adhesive means such as an adhesive. The start-up auxiliary conductor 7 is not limited to a configuration in which the auxiliary starting conductor 7 is bonded to the holding portion main body 60 by the bonding means, but can be changed as appropriate. For example, one or both of the one end side and the other end side of the starting auxiliary conductor 7 may be wound around the connecting portion 61 of the conductor holding member 6.

  In the electrodeless discharge lamp device 1 according to this embodiment configured as described above, when a voltage is applied to the induction coil 4, an electromagnetic field is generated around the induction coil 4 by the voltage to form a magnetic field. The magnetic field also generates a closed loop electric field in the bulb 2. This electric field generates a discharge in the bulb 2 and causes a discharge current to flow, thereby lighting the bulb.

  At this time, since the starting auxiliary conductor 7 functions as a proximity conductor that guides the discharge along the length direction (axial direction) of the bulb 2, the discharge can be easily connected in a loop shape. Thereby, the starting start voltage of the discharge which generate | occur | produces in the induction coil 4 can be made low, and startability can be improved.

  For example, in the bulb 2 in which argon is sealed as an inert gas, the discharge path length (the bulb-like length of the bulb 2) is set to about 1000 mm, and the outer diameter is set to about 40 mm, the starting start voltage when no starting auxiliary conductor is provided Was about 1000V, whereas in this embodiment provided with the starting auxiliary conductor 7 (in this embodiment, the wire diameter was about 1 mm), the starting start voltage was about 800 to 900V. Therefore, when the start auxiliary conductor 7 is provided, the start start voltage is lower than when the start auxiliary conductor is not provided. This indicates that starting is easier than in the case where the starting auxiliary conductor is not provided.

  Next, the lighting fixture 100 of this invention is demonstrated. As shown in FIGS. 4 and 5, the lighting fixture 100 includes an electrodeless discharge lamp device 1 and a lighting fixture main body 101 to which the electrodeless discharge lamp device 1 is attached. The electrodeless discharge lamp device 1 has the same configuration as that of the above embodiment.

  The luminaire main body 101 includes a mounting member 5 to which the electrodeless discharge lamp device 1 is attached and a cover 104 that covers the electrodeless discharge lamp device 1 from the side. A lighting circuit including a power source and connected to the induction coil 4, a power cord, and the like are provided so that a voltage can be applied to the electrodeless discharge lamp device 1.

  1 and 2, the attachment member 5 holds the first core 31 and the second core 32 of the electrodeless discharge lamp device 1 on the core holding portion 53 and also connects the conductor holding member 6 to each other. 61 is connected. In this state, as shown in FIG. 4, the attachment member 5 is attached to the luminaire main body 101 via the fixing bolt 102, whereby the electrodeless discharge lamp device 1 is attached to the luminaire main body 101.

  In the above embodiment, the connecting portion 61 of the conductor holding member 6 is clamped by the mounting main body piece 51 and the clamping piece 52 of the mounting member 5. The fixing member 5 may be fixed by a fixing means such as an adhesive or a bolt.

  Moreover, in the said embodiment, although the connection part 61 of the conductor holding member 6 is connected with the attachment member 5, as shown in FIG. 6, for example, the connection for connecting with the lighting fixture main body 101 on the back surface of the conductor holding member 6 A connecting portion may be provided, and the connecting portion may be connected to the luminaire main body 101 by being fixed by a fixing means such as an adhesive or a bolt.

  Moreover, in the said embodiment, although the starting auxiliary | assistant conductor 7 is comprised from the linear thing of a cross-sectional circle shape, you may comprise from a plate-shaped thing, for example. Further, when the starting auxiliary conductor 7 is formed of a plate-like material, it may have a reflecting surface 71 as shown in FIG.

  Specifically, the starting auxiliary conductor 7 shown in FIG. 6 has a plate thickness of about 0.1 mm to 1.0 mm and is made of a predetermined width, and has a reflecting surface 71 curved in the width direction on the surface side. It is supposed to have. The reflective surface 71 of the starting auxiliary conductor 7 is disposed in a part extending from the rear side of the bulb 2 to the partition forming portion 9. The rest of the configuration is the same as that of the above embodiment.

  The starting auxiliary conductor 7 configured in this way functions as a proximity conductor that assists starting for lighting the bulb 2 as described above, and receives light emitted from the bulb 2 by the reflecting surface 71 and receives the light. The received light can be reflected to the front side through the through hole 91, and the light can be efficiently irradiated.

  Moreover, in the said embodiment, although the conductor holding member 6 is comprised from the thing different from the attachment member 5, as shown in FIG. 8, for example, the attachment member 5 is comprised from a synthetic resin etc., and the attachment member 5 is comprised. And the conductor holding member 6 may be integrally formed.

  Moreover, the conductor arrangement | positioning part 63 of the conductor holding member 6 should just be a thing of the form by which at least one part is arrange | positioned in the division formation part 9, and can be changed suitably.

It is a front view of one embodiment of an electrodeless discharge lamp device of the present invention. It is the II-II line expanded sectional view of FIG. It is the III-III line expanded sectional view of FIG. It is a front view of one Embodiment of the lighting fixture which has an electrodeless discharge lamp apparatus of this invention. It is the VV line expanded sectional view of FIG. It is a front view of the electrodeless discharge lamp apparatus using the conductor holding member of other embodiment. It is sectional explanatory drawing of the electrodeless discharge lamp apparatus using the starting auxiliary | assistant conductor of other embodiment. It is a front view of the electrodeless discharge lamp device using the conductor holding member of other embodiments.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electrodeless discharge lamp apparatus 2 Valve | bulb 4 Induction coil 5 Mounting member 6 Conductor holding member 7 Auxiliary starting conductor 31 1st core 32 2nd core 100 Lighting fixture 101 Lighting fixture main body

Claims (4)

An electrodeless discharge lamp device for lighting a discharge gas enclosed in a tubular bulb having a loop shape by exciting and emitting light by electromagnetic induction,
A starting auxiliary conductor for assisting starting for lighting of the bulb, and a conductor holding member disposed in a section forming portion having a through hole section formed inside the loop-shaped bulb,
The electrodeless discharge lamp device according to claim 1, wherein the starting auxiliary conductor is held by the conductor holding member such that an axial direction thereof is substantially along an axial direction of the bulb.   2. The electrodeless electrode according to claim 1, wherein the starting auxiliary conductor includes a reflecting surface that receives light emitted from the bulb and reflects the received light to the front side through the through hole. Discharge lamp device.   3. The electrodeless discharge device according to claim 1, wherein the conductor holding member is connected to the mounting member or the lighting fixture body when the electrodeless discharge lamp device is attached to the lighting fixture body by the mounting member. Electric light device.   A luminaire comprising: the electrodeless discharge lamp device according to any one of claims 1 to 3; and a luminaire main body to which the electrodeless discharge lamp device is attached by an attachment member.

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