JP4780083B2 - 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 closed loop bulb by electromagnetic induction is known. For example, as an electrodeless discharge lamp device, a valve formed in a closed loop shape by a pair of almost straight straight pipe sections and a pair of curved pipe sections connecting axial ends of the straight pipe sections. It has been proposed that each of the bent tube portions of the bulb is attached to the luminaire main body by an attachment member (core retainer) (see Patent Document 1).
JP 2003-141990 A

  However, like the one described in Patent Document 1, if the bending tube portions are simply attached to the luminaire main body by means of the attachment members, for example, when receiving a large vibration, the bulbs are displaced and are separated from the attachment members. May come off.

  Further, in the electrodeless discharge lamp apparatus having such a closed-loop bulb, the starting start voltage becomes higher as the discharge path length becomes longer, and starting for lighting the bulb becomes difficult.

  In this case, for example, a rod-shaped conductor is provided along the axial direction of the bulb so that the conductor can function as a starting auxiliary conductor for assisting starting for lighting. It is conceivable to exert a reduction effect (townsend effect). However, it is necessary to arrange the starting auxiliary conductor along the axial direction of the valve, and it is difficult to hold the starting auxiliary conductor in a state of being arranged along the axial direction of the valve.

  The present invention provides an electrodeless discharge lamp device and an illumination that can firmly hold a bulb to a lighting fixture body and can easily hold a starting auxiliary conductor in a state of being arranged along the axial direction of the bulb. The purpose is to provide equipment.

  In order to solve the above-mentioned problem, an electrodeless discharge lamp device according to claim 1 of the present invention is an electrodeless discharge lamp device that is used by being attached to a luminaire body and energized by a discharge gas enclosed in a loop-shaped bulb by electromagnetic induction. An attachment member for fixing at least four axial positions of the bulb to the luminaire main body is provided, and a starting auxiliary conductor for assisting starting for lighting the bulb is provided. The conductor is held by the mounting member so that its axial direction is along the axial direction of the bulb, and the electrodeless discharge lamp device is provided.

  According to a second aspect of the present invention, the bulb is formed in an elongated shape, and the attachment members hold both ends in the longitudinal direction of the bulb, and at least one of the attachment members is It is preferable to include a conductor holding portion that holds the starting auxiliary conductor.

  The present invention provides a lighting fixture comprising the electrodeless discharge lamp device according to claim 1 and a lighting fixture body to which the electrodeless discharge lamp device is attached.

  According to the first aspect, at least four portions of the bulb in the axial direction can be fixed to the luminaire main body by the mounting member, and the bulb can be firmly fixed to the luminaire main body. In addition, the starting auxiliary conductor can be held by the mounting member, the starting auxiliary conductor can be easily held in a state of being arranged along the valve, and a member for holding the starting auxiliary conductor is provided separately. It is not necessary and can be manufactured at low cost.

  According to the second aspect of the present invention, since the attachment member holds both ends in the longitudinal direction of the elongated bulb, the bulb can be more stably and firmly fixed to the lighting fixture body. Further, since at least one of the mounting members includes a conductor holding portion that holds the starting auxiliary conductor, the starting auxiliary conductor can be reliably held along the elongated valve.

  According to the third aspect of the present invention, there is provided a lighting fixture that can firmly attach the bulb to the luminaire main body, can easily hold the starting auxiliary conductor disposed along the axial direction of the bulb, and can be manufactured at low cost. Can be provided.

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

  1 is a schematic diagram of an embodiment of an electrodeless discharge lamp device, FIG. 2 is a rear view of FIG. 1, FIG. 3 is an enlarged sectional view taken along line III-III of FIG. 1, and FIG. It is an IV-IV line expanded sectional view.

  The electrodeless discharge lamp device 1 of the present invention is used by being attached to a lighting fixture body 101 (shown in FIG. 7) described later, and the electrodeless discharge lamp device 1 and the lighting fixture body 101 constitute a lighting fixture 100.

  The electrodeless discharge lamp device 1 according to this embodiment includes a bulb 2, a coupler unit 3, an induction coil 4, a starting auxiliary conductor 6, and attachment members 71 to 74.

  The bulb 2 is made of a tubular material made of a light-transmitting material such as glass. The valve 2 of this embodiment has a pair of first straight pipe portion 21 and second straight pipe portion 22 that are substantially straight and arranged in parallel, and shorter in length than the straight pipe portions 21 and 22. It is composed of a pair of U-shaped (curved) first curved tube portion 23 and second curved tube portion 24, and as a result, the whole is a closed loop shape (closed loop shape). It is assumed that the left and right lengths are longer than the upper and lower lengths. The first bending tube portion 23 is provided with a coldest portion 25.

  Although not shown, a fluorescent material is applied to the inner surface of the bulb 2. The bulb 2 is filled with a discharge gas such as an inert gas or metal vapor. 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 that have two identical configurations. The first core 31 and the second core 32 are composed of the same configuration, and are each composed of a ferrite material (MnZn). As shown in FIG. 3, the first core 31 is formed of a ring shape having a hole 33 having a diameter larger than the diameter of the first straight pipe portion 21 of the valve 2. Although not shown, the second core 32 is also made of a ring having a diameter larger than the diameter of the second straight pipe portion 22, as with the first core 31.

  And the 1st core 31 comprised in this way is the one end side of the longitudinal direction of the 1st straight pipe part 21 in the valve | bulb 2 so that the 1st straight pipe part 21 of the valve | bulb 2 may be inserted in the hole 33 ( It is arranged on the left end side in FIG. On the other hand, the second core 32 is arranged on one end side in the longitudinal direction of the second straight pipe portion 22 (left end side in FIG. 1) so that the second straight pipe portion 22 is inserted through a hole (not shown). It is installed.

  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 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 attachment members 71 to 74 are for attaching the electrodeless discharge lamp device 1 to the luminaire main body 101 to be described later. In this embodiment, a first end for fixing the first straight pipe portion 21 of the bulb 2 is fixed. 1 mounting member 71, 2nd mounting member 72 which fixes the one end side of the 2nd straight pipe part 22 of the valve 2, and the other end side (right end side of FIG. 1) of the 1st straight pipe part 21 of the valve 2 are fixed. The third mounting member 73 and the fourth mounting member 74 for fixing the other end side (the right end side in FIG. 1) of the second straight pipe portion 22 of the valve 2 are configured.

  The 1st attachment member 71 and the 2nd attachment member 72 have taken the same structure, and these are comprised from the U-shaped thing as shown in FIG. 3 (In FIG. 3, the 1st attachment member 71 is shown. Represents only). In addition, a core holding portion 75 that holds each of the first core 31 and the second core 32 is provided on the inner peripheral side of the front side of the first and second mounting members 71 and 72, and this core holding portion. By holding the first core 31 and the second core 32 in 75, the first and second attachment members 71 and 72 are respectively connected to the valve via the first core 31 and the second core 32, respectively. Each one end side of the 2nd 1st straight pipe part 21 and the 2nd straight pipe part 22 can be hold | maintained indirectly.

  On the rear side of the first and second mounting members 71 and 72, leg portions 76 are provided in the upper and lower portions of FIG. Further, the leg portion 76 is provided with a bolt receiving portion 76a for receiving the fixing bolt 102 (shown in FIG. 7).

  The third mounting member 73 and the fourth mounting member 74 have substantially the same configuration, and as shown in FIG. 4, the first straight pipe portion 21 of the valve 2, A valve holding portion 77 that holds the other end side of each of the two straight pipe portions 22 is provided, and each of the first straight pipe portion 21 and the second straight pipe portion 22 is held in the valve holding portion 77. Thus, the third and fourth attachment members 73 and 74 can directly hold the other end sides of the first straight pipe portion 21 and the second straight pipe portion 22 of the valve 2, respectively.

  Further, on the rear side of each of the third and fourth attachment members 73 and 74, a leg portion 79 having a bolt receiving portion 79a (shown in FIG. 1) is provided in the same manner as the first and second attachment members 71 and 72. Is provided.

  Further, the third and fourth attachment members 73 and 74 of this embodiment are provided with conductor holding holes 78 as conductor holding portions for holding the starting auxiliary conductor 6. As shown in FIGS. 1 and 4, the conductor holding hole 78 of the third mounting member 73 is large enough to allow the starter auxiliary conductor 6 to be inserted into the lower wall of the third mounting member 73. It is formed so as to penetrate from the holding portion 77 side to the outer peripheral wall side.

  The conductor holding hole 78 of the fourth mounting member 74 is located on the upper wall of the fourth mounting member 74 at a position facing the conductor holding hole 78 of the third mounting member 73 from the valve holding portion 77 side on the inner peripheral wall side. It is formed so as to penetrate to the outer peripheral wall side.

  The starting auxiliary conductor 6 is formed of a long shape formed in a linear shape that can be bent from a conductive material. In this embodiment, the same material as the induction coil 4 (plated wire, litz wire, etc.) having a diameter of about 0.5 to 2.0 mm is used.

  The starting auxiliary conductor 6 is not limited to the form made of the same material as that of the induction coil 4 but can be made of, for example, a copper wire. Further, the diameter is not limited to a range of about 0.5 to 2.0 mm, and a smaller or larger diameter can be used. Further, the cross-sectional shape is not limited to the circular cross-sectional shape, and may be a quadrangular cross-sectional shape or the like.

  The starting auxiliary conductor 6 of this embodiment is arranged as follows. As shown in FIGS. 1, 2, and 3, the distal end side that is one end side in the longitudinal direction of the starting auxiliary conductor 6 is a hole 33 of the first core 31 on the lower rear side of the first straight pipe portion 21 of the valve 2. And the first straight pipe portion 21 are disposed in the gap and held by them.

  And from the left end position of the held first straight pipe portion 21, the third on the right end side of the first straight pipe portion 21 along the axial direction of the first straight pipe portion 21 in the vicinity of the first straight pipe portion 21. It extends to the inside of the mounting member 73, is bent at a substantially right angle toward the conductor holding hole 78 on the lower side, and passes through the conductor holding hole 78 of the third mounting member 73, whereby the conductor holding hole 78 ( Of the inner peripheral surface).

  Further, the auxiliary starting conductor 6 passed through the conductor holding hole 78 of the third mounting member 73 is passed through the conductor holding hole 78 of the fourth mounting member 74, thereby forming an inner peripheral surface of the conductor holding hole 78. It is held and extended to the upper rear side on the right end side of the second straight pipe portion 22.

  Furthermore, the starting auxiliary conductor 6 is bent at a substantially right angle to the left side at that position, and in the vicinity of the second straight pipe portion 22, the second straight pipe portion 22 along the axial direction of the second straight pipe portion 22. It is extended to the left end side. The rear end, which is the other end side in the longitudinal direction of the auxiliary starting conductor 6, passes through the hole in the second core 32 on the rear side on the left end side of the second straight pipe portion 22 and the gap between the second straight pipe portion 22. And are held on them.

  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 that time, the auxiliary starting conductor 6 functions as a proximity conductor that guides the discharge along the axial direction of the bulb 2, and 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 1000 V, whereas in this embodiment provided with the auxiliary starting conductor 6 (in this embodiment, the wire diameter was about 1 mm), the starting start voltage was about 800 to 900 V. Therefore, when the starting auxiliary conductor 6 is provided, the starting start voltage is lower than when the starting 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 FIG. 7, the lighting fixture 100 includes an electrodeless discharge lamp device 1 and a lighting fixture 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 an attachment base 103 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, and supplies high-frequency power (not shown). A lighting circuit including a high-frequency 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 to light the bulb 2.

  And the 1st attachment member 71 and the 2nd attachment member 72 of the electrodeless discharge lamp apparatus 1 hold | maintained the 1st core 31 and the 2nd core 32 to the attachment base 103 of the lighting fixture main body 101 comprised in this way. The fixing bolt 102 is attached in a state. As a result, the left end portion of the first straight pipe portion 21 and the left end portion of the second straight pipe portion 22 of the bulb 2 are fixed to the luminaire main body 101 via the first core 31 and the second core 32.

  Further, the third mounting member 73 and the fourth mounting member 74 are attached to the mounting base portion 103 of the luminaire main body 101 by the fixing bolt 102 while holding the bulb 2. Accordingly, the right end portion of the first straight pipe portion 21 and the right end portion of the second straight pipe portion 22 of the bulb 2 are fixed to the lighting fixture body 101. Accordingly, the bulb 2 is attached to both ends of the first straight pipe portion 21 and both ends of the second straight pipe portion 22, that is, both ends in the longitudinal direction of the bulb 2 having an elongated shape as a whole, and the luminaire main body 101. It is firmly fixed to.

  In addition, in embodiment of the said electrodeless discharge lamp apparatus 1, although the attachment member is comprised from four of the 1st attachment member 71-the 4th attachment member 74, it is not restricted to the thing of this form, It can change suitably. . For example, as shown in FIGS. 5 and 6, a left attachment member 171 for attaching one end side of the first straight pipe portion 21 and one end side of the second straight pipe portion 22 of the valve 2, and a first straight pipe of the valve 2. You may comprise from two with the right attachment member 173 for attaching the other end side of the part 21 and the other end side of the 2nd straight pipe part 22. FIG.

  Specifically, the left mounting member 171 is provided with two substantially U-shaped core holding portions 175a for holding the first core 31 and the second core 32 on the inner peripheral side on the front side thereof, and bolt reception. A leg 176 having a portion 176a is provided.

  As shown in FIG. 6, the right mounting member 173 has a substantially U-shaped first valve holding portion 177a for holding the other end side of the first straight pipe portion 21 of the valve 2 on the inner peripheral side on the front side, and its A substantially U-shaped second valve holding portion 177b that holds the other end side of the second straight pipe portion 22 is provided below the first valve holding portion 177a. Further, legs 176 having bolt receiving portions 176a (shown in FIG. 5) are provided on the upper side of the first valve holding portion 177a and the lower side of the second valve holding portion 177b on the rear side of the right mounting member 173, respectively. ing.

  The right mounting member 173 has a size that allows the starting auxiliary conductor 6 to be inserted into the lower wall of the first valve holding portion 177a and the upper wall of the second valve holding portion 177b, respectively, at positions facing each other. A conductor holding hole 178 is provided so as to penetrate from the peripheral wall to the outer peripheral wall.

  By comprising in this way, an attachment member can be comprised from two, while being able to reduce a number of parts, the manufacturing cost of an attachment member can be made low.

  In the embodiment of the electrodeless discharge lamp device 1, the third mounting member 73, the fourth mounting member 74, or the right mounting member 173 directly holds the bulb 2. However, it can be changed as appropriate.

  For example, a total of 4 cores each having a high-frequency power supply induction coil 4 wound around both ends of the first straight pipe portion 21 and both ends of the second straight pipe portion 22 in the bulb 2 of the electrodeless discharge lamp device 1 are provided. One of the mounting members (for example, having the same configuration as the first or second mounting member 71 or 72 or the left mounting member 171) is used to hold the core and the bulb and the illumination through the core. You may make it fix an instrument main body.

  Moreover, in embodiment of the said electrodeless discharge lamp apparatus 1, although the conductor holding | maintenance part is comprised from the hole for conductor holding, it can change suitably not only in this form. For example, protrusions may be provided on the mounting members 73 and 74 shown in FIG. 4, and the starting auxiliary conductor 6 may be wound around the protrusions and held.

  Alternatively, the starting auxiliary conductor 6 may be held by being wound around a part of the attachment member. Further, for example, the attachment member 173 shown in FIG. 6 may be held by being wound around the lower wall of the first valve holding portion 177a and the upper wall of the second valve holding portion 177b. By doing so, it is not necessary to separately form a holding portion for holding the starter auxiliary conductor 6 in the mounting member, and the starter auxiliary conductor 6 can be held using the conventionally used mounting member as it is.

  Moreover, in embodiment of the said electrodeless discharge lamp apparatus 1, although both ends of a conductor holding | maintenance part are put in and hold | maintained in the clearance gap between a core hole and a valve | bulb, for example, the 1st attachment member 71 and the 2nd attachment member One or both of them are provided with conductor holding holes or protrusions, and one end or both ends of the conductor holding portion is one of the first mounting member 71 and the second mounting member 72 on the outer peripheral side of the core. Or you may make it hold | maintain in the hole for conductor holding provided in both, or a protrusion.

  In the embodiment of the electrodeless discharge lamp device 1, one starting auxiliary conductor 6 is bent and extended along the first straight pipe portion 21 and the second straight pipe portion 22. Is composed of two parts, a first start-up auxiliary conductor and a second start-up auxiliary conductor, and the first start-up auxiliary conductor is placed along the first straight pipe portion 21 and the end thereof is formed in a conductor holding hole provided in the mounting member. The second start-up auxiliary conductor may be held along the second straight pipe portion 22 and the end thereof may be put in or wound around the conductor holding hole. .

  Also, the starting auxiliary conductor 6 is composed of a single conductor, and a conductor holding hole in which both ends or one ends thereof are provided in the mounting member along either one of the first straight pipe portion 21 and the second straight pipe portion 22. You may make it hold | maintain by putting in a part or winding around a part of attachment member. Even when the starting auxiliary conductor 6 is arranged along one of the first straight pipe portion 21 and the second straight pipe portion 22, the starting voltage is lowered as compared with the case where the starting auxiliary conductor 6 is not provided. be able to.

  Furthermore, the starting auxiliary conductor 6 may be arranged over the entire circumference of the valve 2, for example. The starting auxiliary conductor 6 may be provided in contact with the outer wall surface of the valve 2 or in the vicinity of the valve 2 so as not to contact the valve 2.

  Further, the mounting member is not limited to the above-described embodiment, and can be changed as appropriate. For example, it is assumed that a clamping piece to be locked to the mounting member is provided, and when the clamping piece is locked to the mounting member, the core or valve held by the mounting member is pressed from the rear side and the core is formed by the clamping piece and the mounting member. Or you may clamp a valve | bulb.

It is a front view of the electrodeless discharge lamp device of one embodiment of the present invention. It is a rear view of FIG. It is the III-III line expanded sectional view of FIG. It is the IV-IV line expanded sectional view of FIG. It is a front view of the electrodeless discharge lamp apparatus which has the attachment member of other embodiment. It is VI-VI expanded line sectional drawing of FIG. It is a section explanatory view of the lighting fixture provided with the electrodeless discharge device of one embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electrodeless discharge lamp apparatus 2 Valve | bulb 4 Induction coil 6 Auxiliary starting conductor 71,72,73,74 Mounting member 78,178 Conductor holding hole (conductor holding part)
100 lighting equipment

Claims (3)

An electrodeless discharge lamp device that is used by being attached to a luminaire body and energizing and discharging a discharge gas enclosed in a loop-shaped bulb by electromagnetic induction,
A mounting member for fixing at least four locations in the axial direction of the bulb to the lighting fixture body is provided, and a starting auxiliary conductor for assisting starting for lighting of the bulb is provided,
The electrodeless discharge lamp device according to claim 1, wherein the starting auxiliary conductor is held by a mounting member such that an axial direction thereof is along the axial direction of the bulb. The valve is formed in an elongated shape as a whole,
The mounting member holds both ends in the longitudinal direction of the valve, and at least one of the mounting members includes a conductor holding portion for holding a starting auxiliary conductor. The electrodeless discharge lamp device described.   A lighting fixture comprising: the electrodeless discharge lamp device according to claim 1 or 2; and a lighting fixture body to which the electrodeless discharge lamp device is attached.

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