JP2010027877A - Electric apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric apparatus that prevents a user from erroneously recognizing the vapor gas of an electrolyte as smoking by suppressing blowing out of the gas from an apparatus case to the outside in the last stage of service life of an electrolytic capacitor. <P>SOLUTION: The electric apparatus includes the apparatus case 4 in which an electric circuit having circuit components is stored, the electrolytic capacitor 10 provided to the electric circuit as a circuit component, and having a capacitor element 10a containing the electrolyte and a case 13 which contains the capacitor element 10a in a sealed state and is provided with a safety valve 16 for blowing out the vapor gas of the electrolyte when the internal pressure becomes predetermined pressure or higher, and a control means 20 provided to the apparatus case 4 and suppressing outflow of the vapor gas of the electrolyte to the outside of the apparatus case 4. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electric device including an electric circuit using an electrolytic capacitor.

  Conventionally, as an electrical device, for example, a lighting device for lighting a discharge lamp is generally composed of a filter circuit, a rectifying / smoothing circuit, a high-frequency conversion circuit, a lamp lighting circuit, and the like, and these lighting circuits are metal device cases. It is stored inside. An electrolytic capacitor is connected to the rectifying / smoothing circuit to smooth the DC power supply. For example, the electrolytic capacitor is electrolyzed by an electrolytic capacitor element in which electrolytic paper is wound between a pair of electrodes made of an anode foil and a cathode foil. The liquid is impregnated, and a sealing rubber is attached to the impregnated element, which is then sealed in a bottomed cylindrical case.

In the electrolytic capacitor, the electrolytic solution evaporates and decreases with time, and at the end of the life, the equivalent series resistance (ESR) of the electrolytic solution increases and the temperature rises in addition to the capacity decrease due to the decrease of the electrolytic solution. . Eventually, the heat generated by the ripple current increases, causing thermal runaway, a rapid temperature rise, and the case may exceed the boiling point of the electrolytic solution and the case may burst with the pressure of the evaporated gas of the electrolytic solution. Therefore, there is a case where a safety valve is provided in a part of the case, and when the pressure inside the case reaches a predetermined pressure or more with the evaporation gas of the electrolyte, the safety valve is activated and the evaporation gas of the electrolyte is jetted to the outside. The case is prevented from bursting (see, for example, Patent Document 1 and Patent Document 2).
No. 2-31783 Japanese Utility Model Publication 2-46041

  However, in an electrolytic capacitor, the operation of the safety valve is a normal operation for the purpose of suppressing an abnormal pressure rise in the case, but the evaporated gas of the electrolyte sprayed to the outside looks like smoke. The user misidentifies it as smoke from burning and presents a phenomenon that can easily be considered a fire.

  The present invention has been made in view of the above circumstances, and provides an electrical device that can prevent the evaporation gas of the electrolytic solution from being ejected to the outside of the device case at the end of the life of the electrolytic capacitor and prevent misidentification of the user. With the goal.

  An electric device according to claim 1 is an apparatus case in which an electric circuit having circuit parts is housed; a capacitor element that is provided in the electric circuit as a circuit part and contains an electrolytic solution; and the capacitor element is housed in a sealed state. And an electrolytic capacitor provided with a case provided with a safety valve for injecting the evaporated gas of the electrolyte when the internal pressure exceeds a predetermined value; And a control means for suppressing outflow.

  The electric circuit includes, for example, a light source lighting circuit and a motor driving circuit, but is not particularly limited. The circuit components include components necessary for configuring an electric circuit, such as capacitors such as electrolytic capacitors, winding components such as choke coils, and switching elements such as transistors. The device case may also serve as the chassis of the device or the fixture. For example, when the electrical circuit is covered by the chassis of the lighting fixture or the like, the chassis or the like corresponds to the appliance case. The safety valve only needs to have a function of releasing the evaporated gas of the electrolytic solution when the internal pressure of the case becomes a predetermined value or more, and the form is not particularly limited. The control means has a function of mainly liquefying the evaporative gas by passing therethrough, or configured to seal the evaporative gas inside the equipment case, etc., and the evaporative gas completely flows out of the equipment case. It includes not only those that do not, but also those that control to such an extent that part of the evaporative gas flows out of the equipment case. Further, “provided in the equipment case” includes not only the case where the control means is directly attached to the equipment case but also the case where the control means is attached to the electrolytic capacitor.

  The electric device according to claim 2 is the electric device according to claim 1, wherein the device case is formed in a box-like container shape having a vent on the end side, and the control means It is a filter means having a large number of air passages disposed in the air vent. The vent means a gap between the device cases.

  According to a third aspect of the present invention, in the electric device according to the first aspect, the control means is configured using an insulating sheet that covers and insulates circuit components. “Using an insulating sheet” means that the insulating sheet itself has a function of liquefying the evaporative gas by processing the shape of the insulating sheet itself, and the region where the evaporative gas is sealed using the insulating sheet. Including constructing.

  The electrical device according to claim 4 is the electrical device according to any one of claims 1 to 3, wherein the electrical circuit is a lighting circuit that lights a light source. As the light source, a fluorescent lamp, a high-intensity discharge lamp, or the like can be applied.

  According to the first aspect of the present invention, when the safety valve is activated at the end of the life of the electrolytic capacitor, the evaporation gas of the electrolyte is prevented from flowing out of the device case, and the user misidentifies that it is a fire. Can be prevented.

  According to the second aspect of the present invention, in addition to the effect of the first aspect of the invention, the effect of suppressing the temperature rise of the circuit component can be achieved.

  According to the third aspect of the invention, in addition to the effect of the first aspect of the invention, since the control means is configured using the insulating sheet, the number of parts is not increased.

  According to the invention described in claim 4, it is possible to achieve the effects of the above-mentioned claims in an electrical apparatus using a lighting circuit.

  Hereinafter, the lighting device according to the first embodiment will be described with reference to FIGS. 1 is a perspective view showing a basic configuration of a lighting device, FIG. 2 is an exploded perspective view thereof, FIG. 3 is a plan view and a front view showing a basic configuration of an electrolytic capacitor, and FIG. 4 is a diagram of this embodiment. FIG. 5 is a perspective view showing a main part of the lighting device, FIG. 5 is a block diagram showing the lighting device, and FIG. 6 is a perspective view showing a lighting fixture to which the lighting device is applied. Note that, in each embodiment, the same or corresponding parts are denoted by the same reference numerals, and redundant description is omitted.

  First, the basic configuration of the lighting device will be described. As shown in FIGS. 1 and 2, a lighting device 1 called a so-called electronic ballast includes a case body 4 as a device case in which a base case 2 and a cover case 3 are assembled, and a base side and a cover side. Insulating sheets 5 and 6 and a printed circuit board 7 on which circuit components constituting a lighting circuit are mounted are provided. The case body 4 is configured as a box-shaped container. The base case 2 is made of an aluminum alloy, is bent at both sides in the width direction, has side walls 2a, and has a U-shaped cross section. Similarly, the cover case 3 is made of an aluminum alloy, and both sides in the width direction are bent to form inclined portions and have side walls 3a, and both ends in the longitudinal direction are bent to form end walls 3b. Yes. These are overlapped and combined so that the side wall 3a of the cover case 3 is in close contact with the outer surface of the side wall 2a of the base case 2 by the elastic force, and is connected by connecting means (not shown) to form the case main body 4. ing.

  The base-side and cover-side insulating sheets 5 and 6 are formed of an electrical insulating material such as a polyester film, and the base-side insulating sheet 5 is disposed along the inner surface of the base case 2, and the cover-side insulating sheet 6 is arranged along the inner surface of the cover case 3 so as to cover the printed circuit board 7 on which circuit components are mounted. The printed circuit board 7 is housed in the case body 4, and on the circuit component mounting surface, a capacitor such as an electrolytic capacitor 10, a winding component such as a choke coil, a switching element such as a transistor, and an input / output terminal block Parts necessary for configuring the lighting circuit, such as 8, are mounted.

  In the lighting device 1 configured as described above, in order to promote the convection of air and suppress the temperature rise of the circuit components, a gap such as a connecting portion between the base case 2 and the cover case 3 or a vent hole such as a heat radiating hole is usually used. The existence of is allowed.

  Next, the basic configuration of the electrolytic capacitor 10 will be described. 3A and 3B, the electrolytic capacitor 10 includes a case main body 12. The case body 12 includes a bottomed cylindrical aluminum case 13 having an opening 13a, a sealing rubber 14 as a sealing material, and a heat-shrinkable insulating sleeve 15. The case 13 houses an electrolytic capacitor element 10a in which electrolytic paper is sandwiched and wound between a pair of electrodes made of an anode foil and a cathode foil and impregnated with, for example, an ethylene glycol-based electrolyte. Further, a sealing rubber 14 is inserted into the opening 13 a of the case 13, and the case 13 is sealed and sealed by caulking the opening 13 a to the sealing rubber 14.

  On the other hand, on the end surface of the case 13 opposite to the opening 13a, when the internal pressure of the case 13 exceeds a predetermined value, a part of the case 3 is broken to release the evaporated gas of the electrolytic solution to the outside. Is provided. The safety valve 16 is configured by forming a Y-shaped thin portion in the case 13 so as to be broken when the internal pressure of the case 3 exceeds a predetermined value. This thin portion may be formed in an X shape or a K shape. Further, the outer surface of the case 13 is covered with a cylindrical insulating sleeve 15. The insulating sleeve 15 is a heat-shrinkable sleeve made of PET resin or vinyl chloride resin on which the rated voltage, capacitance, polarity, etc. are printed. After covering the case 13, heat is applied to the case by the shrinkage. The outer peripheral surface of 13 is covered. Furthermore, on the side of the opening 13a of the case 13, a lead wire 17 connected to the anode foil and the cathode foil and penetrating the sealing rubber 14 is led out.

  As shown in FIG. 4, in the present embodiment, the end wall 3 b of the cover case 3 and the side wall 3 a of the lighting device 1 and the end wall 3 b of the cover case 3 and the inside of the side wall 2 a of the base case 2 are formed. For example, a fibrous metal such as steel wool or non-woven fabric, or a resin member is disposed in the gap as a vent. Therefore, the control means 20 substantially functions as a filter having a large number of air passages, and the control means 20 is also disposed in other gaps and heat radiation holes of the case body 4. As the control means 20, a porous sponge or a ceramic member may be used.

  As shown in FIG. 5, the lighting device 1 includes a lighting circuit 31 as an electric circuit. The lighting circuit 31 includes a filter circuit 32, a rectifying / smoothing circuit 33, a high-frequency conversion circuit 34, and a lamp lighting circuit 35, and a fluorescent lamp 36 as a light source is connected to the lamp lighting circuit 35. Yes. The filter circuit 32 is connected to the commercial AC power supply AC and has a function of preventing malfunction of the device due to noise and failure to other devices. The rectifying / smoothing circuit 33 rectifies and smoothes the commercial AC, and the high-frequency conversion circuit 34 The direct current is converted into a high frequency, and the lamp lighting circuit 35 has functions of starting and maintaining the lamp. Here, an electrolytic capacitor 10 is used and connected to the rectifying and smoothing circuit 33.

  In FIG. 6, a lighting fixture 40 is an embedded fixture that is embedded in a ceiling surface, and sockets 42 are attached to both ends in the longitudinal direction of the fixture main body 41. A tube fluorescent lamp 46 is connected. The lighting device 1 is accommodated in the appliance main body 41.

  When the commercial AC power supply AC is turned on to the lighting device 1 configured as described above, the electrolytic capacitor 10 of the rectifying and smoothing circuit 33 is charged through the filter circuit 32, and the charged voltage is converted into a high frequency voltage through the high frequency conversion circuit 34. Supplied to the fluorescent lamp 36, the fluorescent lamp 36 is turned on. Here, in order to prevent the case 13 from rupturing when an overvoltage is applied to the electrolytic capacitor 10 or when the pressure in the case 13 reaches a predetermined pressure or higher due to the evaporated gas of the electrolytic solution at the end of the life, the abnormal condition is reached. The safety valve 16 is actuated, the Y-shaped thin part is broken, and the evaporated gas of the electrolytic solution is ejected to the outside. The ejected smoke-like evaporative gas tends to flow out of the case body 4 from the gaps of the case body 4 and the vent holes such as the heat radiation holes. The control means 20 is disposed in the gaps and the heat radiation holes. Therefore, the evaporated gas comes into contact with the control means 20 to be cooled and condensed to be in a liquefied state. Therefore, it does not flow out in the state of evaporating gas, and the outflow in the form of smoke is suppressed.

  As described above, according to the present embodiment, when the safety valve 16 is operated and the evaporated gas of the electrolyte is ejected, the control unit 20 tends to condense the evaporated gas into a liquefied state, so that the evaporated gas is discharged to the outside. Can be controlled. Thereby, when the safety valve 16 operates, it can prevent that a user misidentifies that it is a fire. Moreover, the control means 20 should just be provided in a ventilation hole, and since it is not necessary to consider the place arrange | positioned exceptionally, manufacture becomes easy. Furthermore, since the control means 20 substantially forms a large number of air passages, it contributes to air convection and can also exert an effect of suppressing the temperature rise of the circuit components.

  The control means 20 as described above may be provided so as to cover the safety valve 16 of the electrolytic capacitor 10. Also in this case, the evaporated gas can collide with and come into contact with the control means 20 and be cooled to be in a liquefied state.

  Next, a lighting device according to a second embodiment of the present invention will be described with reference to FIG. FIG. 7 is a schematic explanatory view showing a main part of the lighting device. In the present embodiment, the control means 20 is disposed so as to cover the electrolytic capacitor 10.

(Embodiment 1) As shown in FIG. 7A, a cylindrical control means 20 is provided so as to cover the outer periphery of an electrolytic capacitor 10 mounted on a printed circuit board 7. The control means 20 can be formed of a synthetic resin insulating sheet, aluminum foil or the like, and the material is not particularly limited. According to the present embodiment, when the safety valve 16 is activated and the evaporated gas of the electrolyte is ejected to the outside, the evaporated gas flows toward the gap between the lower end of the control means 20 and the printed circuit board 7. The particles of the vaporized gas collide with each other inside the control means 20 and contact with the inner surface of the control means 20 to be cooled, condensed and liquefied. Therefore, it is less likely to flow out of the gap between the lower end of the control means 20 and the printed circuit board 7 in the state of evaporating gas, and smoke-like outflow from the case body 4 is suppressed. In addition, by forming the control means 20 with a heat conductive material, the heat dissipation is promoted, the evaporation gas is cooled, and the effect of liquefaction is enhanced.

  (Embodiment 2) As shown in FIG. 7B, a conical control means 20 is provided so as to cover the outer periphery of the electrolytic capacitor 10 mounted on the printed circuit board 7. According to the present embodiment, the same effects as those of the first embodiment can be achieved. Therefore, the control means 20 can select various shapes as long as the outer periphery of the electrolytic capacitor 10 can be covered.

  Next, a lighting device according to a third embodiment of the present invention will be described with reference to FIG. FIG. 8 is a schematic explanatory view showing a main part of the lighting device. In the present embodiment, the control means 20 is configured to form a flow path that covers the safety valve 16 of the electrolytic capacitor 10 and bypasses it.

(Embodiment 1) As shown in FIG. 8A, the control means 20 is formed of a bellows-like conduit, and is arranged in the case body 4 in a meandering manner from the safety valve 16 portion of the electrolytic capacitor 10. According to the present embodiment, when the safety valve 16 is activated and the evaporated gas of the electrolyte is ejected to the outside, the evaporated gas does not go directly to the gap of the case body 4, the heat radiation hole, or the like, but inside the conduit of the control means 20. It flows around and collides with the bellows-shaped part in the conduit in the outflow process, the direction of the flow is diffused, the particles collide with each other, is cooled by contacting the inner surface of the conduit, condensed, liquefied W The Furthermore, if this conduit is set longer, the effect is further enhanced. Accordingly, the outflow of the evaporated gas from the case body 4 in the form of smoke is suppressed.

  (Embodiment 2) As shown in FIG. 8B, in this embodiment, the electrolytic capacitor 10 is mounted on the printed circuit board 7 in a horizontal direction. As in the first embodiment, the control means 20 is formed of a bellows-like conduit, and is disposed in the case body 4 in a meandering manner from the safety valve 16 portion of the electrolytic capacitor 10. In this embodiment, the same effects as those of the first embodiment can be obtained.

  Next, a lighting device according to a fourth embodiment of the present invention will be described with reference to FIG. FIG. 9 is a schematic side view and a plan view showing the lighting device. In this embodiment, the control means 20 is comprised with the insulating sheet 6a. The insulating sheet 6a corresponds to the insulating sheet 6 on the cover side in FIG. The insulating sheet 6a includes the electrolytic capacitor 10 and is partitioned so as to partition each circuit component, and is formed in a corrugated cross section (see FIG. 9A).

  According to the present embodiment, when the safety valve 16 is activated and the evaporation gas of the electrolyte is ejected to the outside, the evaporation gas flows around along the inner surface of the insulating sheet 6a, and particles collide with each other in the outflow process. In addition, it cools in contact with the inner surface of the insulating sheet 6a, and is condensed and liquefied. Accordingly, the outflow of the evaporated gas from the case body 4 in the form of smoke is suppressed. Furthermore, since the insulating sheet 6a is used as the control means 20 and no special member is provided, the configuration can be simplified. In addition, it replaces with the insulating sheet 6a and does not prevent the control means 20 from being configured by a wave-like sheet or the like as a separate member.

  Next, a lighting device according to a fifth embodiment of the present invention will be described with reference to FIG. FIG. 10 is a schematic plan view showing the lighting device and a plan view showing a main part taken out. In the present embodiment, the control means 20 is constituted by a shield 21. Shielding bodies 21 are provided on both sides of the electrolytic capacitor 10, and the shielding body 21 includes a first shielding body 21a erected in the vicinity of the side surface of the electrolytic capacitor 10 and the first shielding body 21a. It consists of a pair of 2nd shielding bodies 21b erected in the shape of a square on both sides. The shield 21 is provided in two stages on both sides of the electrolytic capacitor 10.

  According to the present embodiment, as shown in FIG. 10B, when the safety valve 16 is activated and the evaporation gas of the electrolyte is ejected, the flow of the evaporation gas is caused to flow in two directions by the first shield 21a. The divided and further divided flows are caused to act so as to intersect and collide with each other by the second shield 21b. Accordingly, the vaporized gas particles collide with each other, and condensation and liquefaction are accelerated. In addition, the same effect is produced by the second-stage shield 21, liquefaction of the evaporated gas is accelerated, and the outflow from the case body 4 in the form of smoke is suppressed. In addition, as shown in FIG.10 (c), you may form the 1st shielding body 21a in V shape, and it can anticipate that the crossing and collision of evaporative gas will advance smoothly in this case. Furthermore, it is sufficient that the shield 21 is provided at least in one stage, and on the other hand, it does not prevent the provision of a plurality of stages in order to further improve the effect. The shield 21 may be formed by processing and molding the insulating sheet 6.

  Next, a lighting device according to a sixth embodiment of the present invention will be described with reference to FIG. FIG. 11 is a schematic side view, a plan view, and a plan view showing a main part extracted from the lighting device. In the present embodiment, as in the fifth embodiment, the control means 20 is configured by a shield 21. The shielding body 21 is erected in a pair of first shielding bodies 21a erected in the vicinity of both side surfaces of the electrolytic capacitor 10 and a gap G between the pair of first shielding bodies 21a. The second shield 21b. The first shield 21a is formed by bending and processing the insulating sheet 6, and the second shield 21b is constituted by a thermally conductive plate-like heat radiating member.

  Therefore, according to the present embodiment, as shown in FIG. 11 (c), when the safety valve 16 is operated and the evaporation gas of the electrolyte is ejected, the evaporation gas is separated by the first shield 21a from the gap G portion. Guided and focused. The focused evaporative gas collides with and comes into contact with the second shield 21b, is cooled, and is condensed and liquefied. Therefore, the outflow from the case main body 4 in the form of smoke of evaporating gas is suppressed.

  A lighting device according to a seventh embodiment of the present invention will be described with reference to FIG. FIG. 12 is a schematic side view and a plan view showing the lighting device. In the present embodiment, as in the fourth embodiment, the control means 20 is configured by the insulating sheet 6b. This insulating sheet 6b corresponds to the insulating sheet 6 on the cover side in FIG. The insulating sheet 6b includes the electrolytic capacitor 10 and partitions each circuit component so as to form a flow path that detours in a meandering manner (see FIG. 12B).

  According to the present embodiment, when the safety valve 16 is activated and the evaporated gas of the electrolyte is ejected to the outside, the evaporated gas flows around along the flow path of the insulating sheet 6b, and in the outflow process, the particles are separated from each other. It collides and comes into contact with the inner wall surface of the insulating sheet 6b to be cooled, condensed and liquefied. Accordingly, the outflow of the evaporated gas from the case body 4 in the form of smoke is suppressed. Furthermore, since the insulating sheet 6b is used as the control means 20 and no special member is provided, the configuration can be simplified. In addition, it replaces with the insulating sheet 6a and does not prevent that the control means 20 is comprised by another member specially.

  Next, a lighting device according to an eighth embodiment of the present invention will be described with reference to FIG. FIG. 13 is a schematic side view showing a lighting device, a plan view, and a perspective view showing a control means. In the present embodiment, when the control means 20 is configured, the insulating sheet 6c is used to form a hollow kamaboko shape (see FIG. 13B), and a through-hole through which the head of the electrolytic capacitor 10 penetrates the lower wall surface 22 is formed. Therefore, a closed space is formed in the insulating sheet 6c. In addition, FIG.13 (b) removes the curved upper wall side of the insulating sheet 6c, and shows the lower wall surface.

  According to the present embodiment, when the safety valve 16 is activated and the evaporated gas of the electrolyte is ejected to the outside, the control means 20 constitutes a region that seals outflow of the evaporated gas by the insulating sheet 6c. The space in the insulating sheet 6c is diffused, but the outflow is suppressed and it is difficult to go out of the insulating sheet 6c. Therefore, the outflow of the evaporative gas from the case body 4 in the form of smoke is suppressed. In this case, the insulating sheet 6c can prevent the evaporative gas from coming into contact with the printed circuit board 7 and circuit components. Induction of secondary damage such as a short circuit between circuit components can be prevented, and safety can be further improved.

  A lighting device according to a ninth embodiment of the present invention will be described with reference to FIG. FIG. 14 is a schematic side view and a plan view showing the lighting device. In the present embodiment, the configuration of the insulating sheet 6c is different from that of the above-described eighth embodiment. Four rectangular openings 6H are formed in the hollow kamaboko-like insulating sheet 6c. Therefore, the insulating sheet 6c and the cover case 3 constitute a region that seals outflow of evaporative gas. In this case, since it is sufficient to ensure the insulation of the electrolytic capacitor 10 on the side of the safety valve 16, that is, the head, the opening 6H may be formed large leaving a portion corresponding to the head of the electrolytic capacitor 10. . FIG. 14B is a plan view showing the upper part of the insulating sheet 6c with the cover case 3 removed.

  Therefore, according to the present embodiment, when the evaporation gas of the electrolytic solution is ejected, the control means 20 constitutes a region that seals outflow of the evaporation gas, so that the evaporation gas flows out from the case body 4 to the outside. It is suppressed. Further, the evaporative gas passes through the opening 6H and flows in contact with the metal cover case 3, and the cooling of the evaporative gas is promoted, and the effect of being easily liquefied is achieved.

  Next, a lighting device according to a tenth embodiment of the present invention will be described with reference to FIG. FIG. 15: is a typical side view which shows a lighting device, a top view, and the principal part side view which shows a modification. In the present embodiment, the flat insulating sheet 6c and the cover case 3 constitute a region that seals outflow of evaporative gas. Further, in order to ensure the insulation of the head of the electrolytic capacitor 10, an insulating tape 6t is attached to the inner surface of the cover case 3 corresponding to the head of the electrolytic capacitor 10.

  According to the present embodiment, when the evaporation gas of the electrolytic solution is ejected, the control means 20 constitutes a region that seals the outflow of the evaporation gas, so that the outflow of the evaporation gas from the case body 4 to the outside is suppressed. The Further, the evaporative gas flows in contact with the metal cover case 3, and cooling of the evaporative gas is promoted to facilitate liquefaction. Moreover, the member for ensuring the insulation of the electrolytic capacitor 10 can be minimized. For this reason, as shown in FIG. 15 (c), an insulating tape 6t may be attached to the head of the electrolytic capacitor 10 so that the safety valve 16 can be operated. Moreover, as long as insulation can be ensured, not only a tape but another member can be applied.

  Next, a lighting device according to an eleventh embodiment of the present invention will be described with reference to FIGS. FIG.16 and FIG.17 is a block diagram of the principal part which shows the case where a lighting device is used for a residential lighting fixture.

   (Embodiment 1) As shown in FIG. 16, a printed circuit board 7 is mounted on a circular bottom plate 47, and an electrolytic capacitor 10 is mounted on the printed circuit board 7. On the safety valve 16 side of the electrolytic capacitor 10, a guide pipe 22 that guides evaporative gas and a control unit 20 that is connected to the guide pipe 22 are provided. The control means 20 has, for example, a cylindrical shape filled with a fibrous metal such as steel wool or non-woven fabric or a resin member, and the evaporative gas is cooled and liquefied when passing through the control means 20. Is done. The printed circuit board 7 and the control means 20 are accommodated in a case composed of a bottom plate 47 and a metal chassis 48. The metal chassis 48 is provided with a holding bracket 49 for holding the annular fluorescent lamp.

  (Embodiment 2) As shown in FIG. 17, the guide pipe 22 in Embodiment 1 is extended to the back surface side of the bottom plate 47 and connected to the spiral control means 20 disposed on the back surface side. The control means 20 has a pipe shape and a spiral shape so that the evaporative gas flows. The outlet end of the control means 20 may be open on the back surface side of the bottom plate 47, or may be open on the surface side of the bottom plate 47, that is, open in the case. According to the present embodiment, when the electrolyte evaporating gas is ejected, the evaporating gas is guided by the induction pipe 22 and flows out around the spiral control means 20, and is cooled, condensed, Liquefied. In addition, it is preferable to comprise the control means 20 with the material which has heat dissipation, such as a metal, in order to accelerate | stimulate liquefaction of evaporation gas.

  The present invention is not limited to the configuration of each of the embodiments described above, and various modifications can be made without departing from the spirit of the invention. For example, the electric device is not limited to the lighting device, but can be applied to a drive control device that controls a motor, and can also be applied to other electric devices including an electric circuit using an electrolytic capacitor.

It is a perspective view which shows the basic composition of a lighting device. It is the same exploded perspective view. It is the top view and front view which show the basic composition of an electrolytic capacitor. It is a perspective view which shows the principal part of the lighting device which concerns on the 1st Embodiment of this invention. It is a block diagram which shows the lighting device. It is a perspective view which shows the lighting fixture to which the lighting device is applied. It is explanatory drawing which shows the principal part of the lighting device which concerns on the 2nd Embodiment of this invention. It is explanatory drawing which shows the principal part of the lighting device which concerns on the 3rd Embodiment of this invention. It is the side view and top view which show the lighting device which concerns on the 4th Embodiment of this invention. It is the top view which shows the lighting device which concerns on the 5th Embodiment of this invention, and the top view which takes out and shows the principal part. It is the side view which shows the lighting device which concerns on the 6th Embodiment of this invention, the top view, and the top view which takes out and shows the principal part. It is the side view and top view which show the lighting device which concerns on the 7th Embodiment of this invention. It is the side view and top view which show the lighting device which concerns on the 8th Embodiment of this invention. It is the side view and top view which show the lighting device which concerns on the 9th Embodiment of this invention. It is the side view which shows the lighting device which concerns on the 10th Embodiment of this invention, a top view, and the principal part side view which shows a modification. It is a block diagram of the principal part which shows the lighting device which concerns on the 11th Embodiment (Example 1) of this invention. It is a block diagram of the principal part which shows the lighting device which concerns on the 11th Embodiment (Example 2) of this invention.

Explanation of symbols

1 ... electric equipment (lighting device), 4 ... equipment case (case body),
10 ... electrolytic capacitor, 10a ... capacitor element, 13 ... case,
16 ... Safety valve, 20 ... Control means, 31 ... Electric circuit (lighting circuit)

Claims (4)

An equipment case containing an electrical circuit having circuit components;
Provided as an electrical circuit as a circuit component, a capacitor element containing an electrolytic solution, and a safety valve for storing the capacitor element in a sealed state and ejecting an evaporation gas of the electrolytic solution when the internal pressure exceeds a predetermined level are provided. An electrolytic capacitor with a case;
A control means provided in the equipment case and for suppressing the outflow of the evaporated gas of the electrolyte solution outside the equipment case;
An electrical apparatus comprising:   The equipment case is formed in a box-like container having a vent on the end side, and the control means is a filter means having a large number of air passages arranged in the vent of the equipment case. The electrical apparatus according to claim 1.   The electric device according to claim 1, wherein the control unit is configured using an insulating sheet that covers and insulates circuit components.   The electrical device according to any one of claims 1 to 3, wherein the electrical circuit is a lighting circuit that lights a light source.

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