JP2006054106A - Lighting device and lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact and low-cost lighting device with waterproof performance. <P>SOLUTION: The lighting device is provided with a circuit module 21, a tray 41, a connector cap 43, a filling material 55 and an outer-shell case 11. The module 21 is provided with an electrically insulating circuit board 22, various kinds of electric components 26 loaded on the board to constitute a lighting circuit, and a wire connector 24 connected to the lighting circuit and loaded on the board 22. The tray 41 houses the module 21. The connector cap 43 is equipped with a closing part maintaining a closed state until the wire is inserted and fitted into the connector 24. The filling material 55 has waterproof and electric insulating properties and filled in the tray 41 burying the module 21 as a whole. The outer-shell case 11 houses a waterproof assembly 31 consisting of the tray 41, the module 21 and the filling material 55 almost filling its inside and makes the cap 43 expose. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a lighting fixture including a discharge lamp such as a fluorescent lamp, and a lighting device for lighting the discharge lamp.

  In a lighting fixture installed outdoors or in a high humidity environment, a lighting device for lighting a discharge lamp included in the fixture may be exposed to high humidity, and thus the lighting device is required to be waterproof.

Conventionally, in order to obtain such waterproof performance, the inverter lighting device is housed in a cylindrical case made of an integrally molded product having a seamless cross section, and both ends of the cylindrical case are closed with side plates, and these cylindrical cases are There is known a technique in which a waterproof case serving as an outer shell is formed by the side plate and the inverter lighting device is waterproofed with this waterproof case (see, for example, Patent Document 1).
Japanese Patent Laying-Open No. 2003-7212 (paragraphs 0004, 0005, 0008-0019, FIGS. 1 to 14, 17, and 19)

  In the technique of Patent Document 1, the inverter lighting device itself is assembled with a case that forms an outer case thereof. Since such a lighting device is accommodated in a waterproof case, the waterproof case that forms the outer case of the entire lighting device is large. It is a shape. Further, in addition to the assembly of the inverter lighting device, the labor for housing the device in the cylindrical case and the labor for assembling the waterproof case are required, which requires many man-hours for assembly. Therefore, as described above, in addition to an increase in cost due to the use of a large waterproof case itself, a large cost is required for assembling, so that the cost is high.

  An object of the present invention is to provide a small and inexpensive lighting device that has waterproof performance and a lighting fixture including the same.

  In order to solve the above-mentioned problem, a lighting device according to the invention of claim 1 is mounted on a circuit board, various electric components mounted on the board to form a lighting circuit, and connected to the lighting circuit on the circuit board. A circuit module provided with an electric wire connector; and a through-hole that is fitted in the electric wire connector and is closed by a closing portion that is pushed through the electric wire when the electric wire is connected to the electric wire connector and allows the electric wire to be inserted. A connector cap having a portion; a tray containing the circuit module; a waterproof material and an electrical insulating material, a filling material filling the entire circuit module and filling the tray; the tray, the circuit module, And an outer case for housing the waterproof assembly made of the filler and exposing the connector cap.

  In the present invention, for example, the tray may be formed integrally with the tray body and the connector cap, or the tray and the connector cap may be separate. When the tray and the connector cap are separate, the connector cap can be provided at a position away from the tray. The connector cap can be made of synthetic resin or rubber. When the tray is made of rubber such as EPDM, the tray body and the connector cap can be integrally formed. When the tray body is made of synthetic resin, the connector cap may be made of rubber such as EPDM. As the synthetic resin for forming the tray, a resin having a low material cost and having a heat resistance that can withstand the temperature of the heat-curing treatment of the filler, such as a PET resin, can be suitably used. In the present invention, a synthetic resin such as a silicon resin, a urethane resin, an epoxy resin, an unsaturated polyester resin, or the like can be used as the filler, and a urethane resin with a low material cost can be preferably used. In order to obtain heat dissipation, it is preferable to use silicon resin, unsaturated polyester resin, or the like. In the present invention, the housing base and the cover forming the outer case can be made of a synthetic resin, but in order to obtain heat radiation performance to the outside, it is preferable that the housing base and the cover are made of a metal having good thermal conductivity such as an aluminum alloy. In the present invention, an electrical component such as a chip component may be surface-mounted on the soldering surface of the circuit board.

  Further, the lighting device of the present invention may be one that lights a lamp in a normal state or one that lights in an emergency such as a power failure. In the present invention, it is preferable that the outer case fully accommodates the waterproof assembly in order to promote downsizing and improve heat dissipation from the waterproof assembly to the outer case. Here, the full state is preferably a state in which the waterproof assembly is housed in the outer case in a state where each surface of the waterproof assembly is in thermal contact with each surface of the outer case, for example, at least a part of the waterproof assembly, Preferably, a housing form is also included in which a solder cover layer of a filler covering the soldering surface of the circuit board is brought into contact with the outer case in a heat conductive manner, and other portions are slightly separated from the outer case.

  In the first aspect of the invention, since the tray having the same size as the outer case is provided, and the entire circuit module accommodated in the tray is embedded in an electrically insulating and waterproof filler filled in the tray, the filler The circuit board of the circuit module and the electrical parts can be waterproofed. Since the through hole scheduled portion of the connector cap is closed by the closing portion until the electric wire is inserted, the filler filled in the tray does not enter the electric wire connector by the connector cap. As described above, the circuit module is waterproofed by using the tray accommodated in the outer case and the filling material filled in the tray, so that a particularly large outer case is not required, and the waterproofing in the outer case is not required. According to the configuration, a waterproof performance that can withstand a high humidity environment can be obtained without requiring a waterproof case for housing the outer case.

  The invention according to claim 2, which is a preferred embodiment of the present invention, is characterized in that the filler is a synthetic resin mixed with a filler. As the filler, an inorganic filler or an aluminum hydroxide filler as a metal compound can be preferably exemplified. The mixing ratio of the filler is set according to the required heat dissipation characteristics.

  According to the second aspect, the filler mixed in the filler can impart excellent heat dissipation to the filler. Therefore, the heat of the electrical component that generates heat can be quickly transmitted to the outer case through the filler, and the temperature rise of the electrical component in the filler can be suppressed.

  The invention of claim 3 comprises: an instrument main body; a lamp socket attached to the instrument main body; a discharge lamp removably supported by the socket; and attached to the instrument main body to light the discharge lamp. The lighting device according to 1 or 2 is provided.

  Since the lighting device provided in the lighting fixture of the present invention is the one described in claim 1 or 2, it is possible to provide a lighting fixture having a waterproof and performance and a small and inexpensive lighting device.

  According to the first aspect of the present invention, since the entire circuit module is embedded in the filling material filled in the tray of a size accommodated in the outer case and waterproofing is realized inside the outer case, it is necessary to enlarge the outer case. In addition, there is no need for a waterproof case for housing the outer case, and a waterproof performance that can withstand a high humidity environment can be obtained. For this reason, it is possible to provide a small and inexpensive lighting device having a predetermined waterproof performance.

  According to the second aspect of the present invention, due to the heat dissipating property imparted to the filler by the filler, the heat of the electrical component accompanied by heat generation in the filler is quickly released to the outer case, thereby suppressing the overheating of the electrical component. A possible lighting device can be provided.

  According to the invention of claim 3, it is possible to provide a lighting fixture having the waterproof performance of claim 1 or 2 and having a small and inexpensive lighting device.

  An embodiment of the present invention will be described with reference to FIGS.

  The luminaire denoted by reference numeral 1 in FIG. 1 is used with a favorable waterproof property as an outdoor lamp, a tunnel lamp installed in a tunnel, an eaves lamp of a station building, or the like. The lighting fixture 1 includes a fixture body 2, a lamp socket 3, a discharge lamp, for example, a straight fluorescent lamp 4, and a waterproof lighting device 5 that functions as an electronic ballast.

  The appliance main body 2 illustrated in FIG. 1 is made of metal and has a rectangular parallelepiped shape, and lamp sockets 3 are projected downward at both ends in the longitudinal direction, for example. The fluorescent lamp 4 is detachably supported by the lamp socket 3. A lighting device 5 for lighting the fluorescent lamp 4 is built in the instrument body 2. The lighting device 5 is configured as follows.

  As shown in FIGS. 2 to 4, the lighting device 5 includes an outer case 11, a circuit module 21, a tray 41, and a filler 55.

  The outer case 11 has an accommodation base 12 and a cover 15 connected thereto. The housing base 12 and the cover 15 are preferably made of a metal, for example, an aluminum alloy having excellent heat dissipation, but can also be made of iron with a low material cost. The housing base 12 and the cover 15 are connected to each other by, for example, a cut-and-raised piece formed on one of the housing base 12 and the cover 15 and raised on the inside, and a hole or a notch formed on the other. This is done by hooking on the receiving part.

  As shown in FIGS. 2 and 3, the storage base 12 has a base wall 12a and side walls 12b bent at right angles from both edges in the width direction, and has a bowl shape with a U-shaped cross section. Yes. The overall length of the housing base 12 is longer than the circuit board 22 described later. Fixing portions 13 each having a hole or a notch are formed at both ends in the longitudinal direction of the base wall 12a. The lighting device 5 is attached to the appliance main body 2 such that the base wall 12 a is brought into contact with the metal portion of the appliance main body 2 by a fixing component such as a screw passing through the fixing portions 13. Therefore, the accommodation base 12 functions as a heat transfer surface to the instrument body 2.

  As shown in FIGS. 2 to 4, the cover 15 includes, for example, a cover main wall 15a having portions bent obliquely on both sides in the width direction, a side wall 15b bent from each side edge, and a cover main wall 15a. And end walls 15c bent at right angles from both ends in the longitudinal direction. The end wall 15c is provided so as to close both ends of the bowl-shaped longitudinal direction formed by the cover main wall 15a and the end wall 15c. The cover 15 is formed to be shorter than the housing base 12 to the extent that the fixing portion 13 is exposed. The cover 15 directly overlaps the side wall 15b with the inner surface of the side wall 12b of the storage base 12, and the side walls 12b and 15b are connected. The housing base 12 and the cover 15 can conduct heat through the stacked side walls 12b and 15b.

  Square holes 16 and 17 are individually opened at one end and the other end of the cover 15 in the longitudinal direction. One hole 16 is provided to expose an input-side connector cap 43 described later, and the other hole 17 is provided to expose an output-side connector cap 44 described later.

  The circuit module 21 for lighting the fluorescent lamp 4 includes an electrically insulating circuit board 22, a lighting circuit 23 (see FIG. 7), an input wire connector 24, and an output wire connector 25. Yes.

  The circuit board 22 has a long rectangular shape that fits within the cover 15, and one surface thereof is used as the component mounting surface 22 a, and the other surface on which the circuit pattern is printed is used as the soldering surface 22 b. The surface of the soldering surface 22b is covered with an insulating resist layer (not shown).

  As shown in FIG. 4 and FIG. 8, the lighting circuit 23 includes, for example, an inverter circuit unit by combining a semiconductor such as a power transistor, an electric component 26 such as a resistor, a capacitor, a coil, a transformer, a diode, and other various chip components. It is configured to include. In FIG. 8, reference numeral 26 a indicates a power transistor with heat generation, which is one of the electrical components 26, and reference numeral 26 b indicates an electrolytic capacitor, which is one of the electrical components 26. Reference numeral 27 denotes a heat sink thermally connected to the power transistor 26a. The heat radiating plate 27 is erected along one side edge of the circuit board 22 so as to be perpendicular to the component mounting surface 22 a and slightly protrudes outside the width of the circuit board 22. As shown in FIG. 10, the electrolytic capacitor 26b has an explosion-proof valve 28 exposed at the front end surface thereof. The explosion-proof valve 28 is broken when the internal pressure of the electrolytic capacitor 26b rises abnormally.

  The lighting circuit 23 is formed on both surfaces of the intermediate portion excluding both ends in the longitudinal direction of the circuit board 22, and most of the electric components are mounted on the component mounting surface 22a. The electrical component 26 includes a plurality of electrical components mounted on the circuit board 22 by flow soldering in addition to the surface mounting components such as chip components. These electrical components have pin-shaped terminals 29. By passing the terminals 29 through the circuit board 22 and through the flow solder layer, the circuit boards are individually soldered to the lands of the circuit pattern. 22 is attached.

  As shown in FIG. 8, the input (high voltage side) wire connector 24 is soldered to one end in the longitudinal direction of the circuit board 22, and the output (low voltage side) wire connector 25 is connected to the other end in the longitudinal direction of the circuit board 22. It is soldered to. These electric wire connectors 24 and 25 also have pin-shaped terminals 30 and are mounted on the circuit board 22 by flow soldering together with electrical components having terminals 29. A core wire of a power supply-side insulation-coated electric wire (not shown) is inserted and connected to the electric wire connector 24. A core wire of an insulation coated electric wire (not shown) for wiring in the instrument is inserted and connected to the electric wire connector 25.

  The tray 41 functions as a filling container for filling the filling material 55. As shown in FIGS. 3 and 6 to 8, the tray 41 is slightly smaller than the cover 15, and a plurality of, for example, a pair of tray bodies 42 are accommodated along the inner surface shape so as to contact the inner surface of the cover 15. Connector caps 43 and 44 are provided.

  The tray main body 42 is preferably an inexpensive electrical insulating material having heat resistance, for example, a film-like molded product made of PET resin. The tray main body 42 has cap connection portions 42a at both ends in the longitudinal direction. The depth of the tray main body 42 between the cap connecting portions 42 a is deeper than the depth of the tray main body 42 at the cap connecting portion 42 a, and this deep portion is formed to contact the inner surface of the cover 15. 6-8, the code | symbol 42b has shown the side plate of the tray main body 42, and the code | symbol 42c has shown the opening edge of the tray main body 42 which continues from the said deep site | part to the right-and-left cap connection part 42a. Yes.

  As shown in FIG. 7, the tray body 42 is formed with a plurality of support protrusions 45 that protrude from the inner surface of the side plate 42 b and extend along the depth-thickness direction (vertical direction) of the tray body 42. Further, a plurality of raised bottom portions 46 to 52 are integrally formed at a deep portion of the tray main body 42. These raised bottom portions 46 to 52 are provided corresponding to a region where the arrangement density of the electrical components 26 of the circuit module 21 is low and a region where electrical components such as chip components are gathered and arranged. Yes.

  The connector caps 43 and 44 are made of rubber, for example. One connector cap 43 is formed so as to be tightly fitted to the input electric wire connector 24 by its elastic deformation, and is attached to one cap connecting portion 42a so as to penetrate liquid tightly. The other connector cap 44 is formed so as to be tightly fitted to the output electric wire connector 25 by its elastic deformation, and is attached to the other cap connecting portion 42a so as to penetrate liquid tightly. The height positions of the open end faces 43a, 44a of the connector caps 43, 44 located in the tray main body 42 are substantially the same as the height positions of the support convex portions 45. Further, the height positions of the bottom surfaces of the raised bottom portions 46 to 52 are lower than these height positions.

  Each of the connector caps 43 and 44 has a plurality of electric wire insertion portions 53 into which end portions of insulating coated electric wires for power supply or in-apparatus wiring are inserted. The wire insertion portion 53 has a through hole planned portion 53b closed by a closing portion 53a facing the outer surface of the cap as shown in FIG. 9, and a plurality of holes are provided on the inner surface of the through hole planned portion 53b. An annular protrusion 53c is provided. The closing part 53a is thin. The core wire and the terminal portion exposed at the terminal portion of the electric wire can be inserted into the through-hole planned portion 53b by breaking through the closing portion 53a, and each annular protrusion 53c is brought into close contact with the outer periphery of the electric wire terminal portion along with this insertion. Liquid-tightness is achieved. The core wire of the electric wire terminal part inserted in the electric wire insertion part 53 is inserted in the electric wire connector 24 or 25, and is connected to the quick connection terminal which these connectors have (not shown).

  The circuit module 21 is housed in the tray 41 with its component mounting surface 22a facing the inside of the tray 41. The longitudinal ends of the circuit board 22 of the circuit module 21 accommodated are supported on the open end faces 43a, 44a of the connector caps 43, 44, respectively, and there are a plurality of intermediate portions between the longitudinal ends of the circuit board 22. Are supported by the support convex portion 45 of the. Further, during this accommodation, a connector cap 43 is fitted on the electric wire connector 24, and a connector cap 44 is fitted on the electric wire connector 25. With these fittings, the circuit module 21 is positioned with respect to the tray 41.

  In this way, the terminals 29 of the electrical components 26 of the circuit module 21 accommodated in the tray 41 and the tips of the terminals 30 of the electric wire connectors 24 and 25 protrude upward. However, the height positions of the terminals 29 and 30 are lower than the upper end of the opening edge 42 c of the tray 41. Further, as illustrated in FIGS. 3 and 4, the tips (lower ends in FIGS. 3 and 4) of each electrical component 26 are all separated from the inner surface of the tray main body 42. Further, the raised bottom portions 46 to 52 of the tray main body 42 are respectively provided in a region where the arrangement density of the electrical components 26 of the circuit module 21 is low and a region where electrical components such as chip components are gathered. Opposite.

  The filler 55 is a synthetic resin having electrical insulation and waterproofing, and in this embodiment, a urethane resin mixed with aluminum oxide filler (not shown) is used in order to improve heat dissipation. The filling material 55 is filled in the tray 41 by embedding the entire circuit module 21 accommodated in the tray 41. This filling is performed in a state where the tray 41 in which the circuit module 21 is housed is fitted inside the cover 15, and the uncured filling material is injected from the gap between the opening edge 42 c of the tray 41 and the circuit board 22. Is done. Further, by fitting the tray 41 into the cover 15, the connector caps 43 and 44 are exposed in the opposed holes 16 and 17, respectively, and an external electric wire can be inserted.

  3 and 4, reference numeral 55a indicates a solder cover layer of the filler 55 that covers the soldering surface 22b of the circuit board 22, and the terminals 29 and 30 are embedded in the solder cover layer 55a. . The height of the surface of the solder cover layer 55a is located at the same height as the upper end of the opening edge 42c of the tray 41, for example. That is, as shown in FIG. 5, the filler 55 is filled in a state where the tray 41 is filled so that the surface of the solder cover layer 55 a is flush with the upper end of the opening edge 42 c of the tray 41. The height of the surface of the solder cover layer 55a can be made lower than the upper end of the opening edge 42c of the tray 41.

  The filler 55, the tray 41, and the circuit module 21 constitute a waterproof assembly 31 that guarantees waterproofness for the circuit module 21 by the waterproof performance of the filler 55.

  With the configuration in which the tray 41 has the raised bottom portions 46 to 52, the amount of the filler 55 used can be reduced as compared with the configuration using the tray without the raised bottom portion. Thereby, it is possible to shorten the filling operation time and reduce the cost of the lighting device 5.

  The filling material 55 is cured by passing the waterproof assembly 31 through a heat-curing furnace after filling the tray 41 with the filling material 55. The tray 41 made of PET can exhibit sufficient heat resistance against the heat given by this heat treatment.

  The hardness of the cured filler 55 is desirably set to a hardness that allows the explosion-proof valve 28 of the electrolytic capacitor 26b to operate. JIS A hardness 50 can be illustrated as this hardness. When the filler 55 having such hardness is used and the explosion-proof valve 28 of the electrolytic capacitor 26b entirely embedded in the filler 55 is broken as shown in FIG. 11A, as shown in FIG. 11B. The portion 55b of the electrolytic capacitor 26b that covers the explosion-proof valve 28 is easily bent so as to rise, and the stress accompanying the destruction of the explosion-proof valve 28 can be relaxed and absorbed. For this reason, due to the influence of the filler 55 around the explosion-proof valve 28, the stress suddenly increases with the destruction of the explosion-proof valve 28, and the portion 55b covering the explosion-proof valve 28 is blown off, which has other adverse effects. Can be suppressed.

  As described above, the waterproof assembly 31 is assembled by being filled with the filler 55 in a state of being accommodated in the cover 15. The outer surface of the tray 41 of the waterproof assembly 31 is accommodated so as to contact the inner surface of the cover 15, in other words, the tray 41 is accommodated with respect to the cover 15 in a full state. Thereby, heat conduction from the waterproof assembly 31 to the cover 15 is possible. In particular, the heat sink 27 that is connected to the power transistor 26 a that generates a large amount of heat and protrudes from the circuit board 22 is pressed tightly against the one side plate 42 b of the tray 41 against the one side wall 15 b of the cover 15. The heat conduction from the radiator plate 27 to the cover 15 is reliable.

  As described above, the cover 15 in which the waterproof assembly 31 is accommodated is covered with the accommodation base 12, and the accommodation base 12 and the cover 15 are connected to constitute the outer case 11. In this assembled state, the solder cover layer 55a of the filler 55 is covered with the base wall 12a of the receiving base 12, and the base wall 12a and the solder cover layer 55a are closely packed as shown in FIGS. Surface contact. In spite of this contact, since the solder cover layer 55a is electrically insulating, a sheet member for achieving electrical insulation between the housing base 12 and the circuit module 21 is not required. By securing a wide contact area based on the surface contact, the heat of the waterproof assembly 31 can be smoothly conducted to the housing base 12. When a gap is generated between the base wall 12a and the solder cover layer 55a, a sheet-like heat transfer member having a thickness corresponding to the gap is connected to the base wall 12a and the solder cover layer 55a. It is also possible to interpose between them to achieve smooth heat conduction.

  Further, a drainage portion is provided in each of the accommodation base 12 and the cover 15 of the outer case 11. That is, as shown in FIGS. 2 to 4, the base wall 12 a of the housing base 12 has a plurality of drainage portions 14 made of holes, and the cover main wall 15 a of the cover 15 has a plurality of drainages made of holes. Part 18 is opened. Therefore, when moisture or the like is condensed between the outer case 11 and the tray 41 and the solder cover layer 55a, the water can be drained to the outside of the outer case 11 through the drainage portions 14 and 18. Therefore, the electrical insulation performance of the lighting device 5 can be improved. Further, when the outer case 11 is made of iron, it is effective in suppressing the rust from being generated in the outer case 11.

  In the lighting device 5 having the above configuration, the tray 41 having substantially the same size as the cover 15 of the outer case 11 is provided, and the entire circuit module 21 accommodated in the tray 41 is embedded in the filler 55 filled in the tray 41. . The filling material 55 filled in the tray 41 does not enter the wire connectors 24 and 25 of the circuit module 21 by the connector caps 43 and 44 of the tray 41. That is, the through-hole scheduled portion 53b of the connector cap 43, 44 is closed by the thin closing portion 53a until the electric wire is inserted, so the filler 45 filled in the tray 41 causes the connector cap 43, 44 to The wire connectors 24 and 25 do not enter through.

  Since the filler 55 is electrically insulating and waterproof, the filler 55 can waterproof the circuit board 22, the electrical component 26, the soldering surface 22b, and the like of the circuit module 21. The tray 41 is sized to be accommodated in the cover 15 in a full state. Since the tray 41 is used to provide the waterproof structure described above in the outer case 11, the waterproof structure is provided. As a cause, the outer case 11 does not become large. Thereby, it is also possible to use an outer case made of existing manufacturing equipment. At the same time, such a waterproof configuration in the outer case 11 does not require a large waterproof case for housing the outer case 11, and can provide waterproof performance that can withstand a high humidity environment.

  For this reason, the lighting device 5 can be configured in a small size. Moreover, in addition to assembling the lighting device 5, there is no need for the trouble of housing the device 5 in the waterproof case and the trouble of assembling the waterproof case thereafter, so that the lighting device 5 can be easily assembled. As described above, since it is possible to eliminate the cost increase due to the use of the waterproof case itself, the cost for assembling can be reduced, so that the lighting device 5 and thus the lighting fixture 1 including the device 5 can be reduced in cost.

  Furthermore, since the filling material 55 of the lighting device 5 has not only waterproof performance but also heat radiation performance, the heat of the power transistor 26a and other electrical components that generate heat can be conducted to the outer case 11 through the filling material 55. In this case, since the capacity of the filler 55 is large and the heat conduction area from the filler 55 to the outer case 11 is large, excellent heat dissipation characteristics can be obtained. In particular, the use of the filler 55 mixed with a metal filler can further improve the heat dissipation characteristics.

  Moreover, since the filler 55 embeds the entire circuit module 21 as described above, the dust can be reliably prevented by the filler 55. Thereby, it can use suitably also as the lighting fixture 1 provided with the lighting device 5 used by this place with much dust and this device 5 by this.

The perspective view which shows the lighting fixture which concerns on one Embodiment of this invention. The perspective view which shows the lighting device which concerns on one Embodiment of this invention with which the lighting fixture of FIG. 1 is provided. Sectional drawing which follows the F3-F3 line | wire in FIG. Sectional drawing which follows the F4-F4 line | wire in FIG. The perspective view which shows the waterproof assembly of the lighting device of FIG. 2 as seen from the back side. The perspective view which shows the tray with which the waterproof assembly of FIG. 5 is provided seeing from the front side. The perspective view shown from the back side in the state which isolate | separated the tray of FIG. 6, and the circuit module accommodated in this. The perspective view shown from the front side in the state which isolate | separated the tray of FIG. 6, and the circuit module accommodated in this. Sectional drawing which shows the connector cap which the tray of FIG. 6 had. The perspective view which shows the electrical component with an explosion-proof valve mounted in the circuit module shown in FIG. (A) is sectional drawing which shows the state by which the electrical component of FIG. 10 was embed | buried under the filler. (B) is sectional drawing which shows the state which the explosion-proof valve of the electrical component of FIG. 10 embed | buried under the filler operated.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Lighting fixture, 2 ... Appliance main body, 3 ... Lamp socket, 4 ... Fluorescent lamp, 5 ... Lighting device, 11 ... Outer case, 12 ... Housing base, 15 ... Cover, 16, 17 ... Hole, 21 ... Circuit module, DESCRIPTION OF SYMBOLS 22 ... Circuit board, 22a ... Component mounting surface, 22b ... Soldering surface, 23 ... Lighting circuit, 24, 25 ... Electric wire connector, 26 ... Electrical component, 29, 30 ... Terminal, 31 ... Waterproof assembly, 41 ... Tray, 42 ... Tray body, 42a ... Cap connection part, 53 ... Wire insertion part, 53a ... Closed part, 53b ... Scheduled through hole part, 55 ... Filler, 55a ... Solder cover layer

Claims (3)

A circuit board, various electrical components mounted on the board to form a lighting circuit, and a circuit module provided with a wire connector connected to the lighting circuit and mounted on the circuit board;
A connector cap having a through-hole scheduled portion that is fitted on the electric wire connector and is closed by a closing portion that is pushed by the electric wire when the electric wire is connected to the electric wire connector and allows the electric wire to be inserted;
A tray containing the circuit module;
A filler having waterproofness and electrical insulation, filling the entire circuit module and filling the tray;
An outer case for housing the waterproof assembly including the tray, the circuit module, and the filler, and exposing the connector cap;
A lighting device comprising:   The lighting device according to claim 1, wherein the filler is a synthetic resin mixed with a filler. An instrument body;
A lamp socket attached to the appliance body;
A discharge lamp removably supported in the socket;
The lighting device according to claim 1 or 2, wherein the lighting device is attached to the appliance main body to light the discharge lamp;
The lighting fixture characterized by comprising.

Images