JP2008108683A - Discharge lamp lighting device and lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a discharge lamp lighting device and a lighting fixture capable of stably storing an injected insulation filling material placed horizontally up to a hardening state, and reducing the filling material, in a horizontally-long closed case. <P>SOLUTION: The discharge lamp lighting device 1 constituting a case 5 comprising a horizontally-long case body 2 with a nearly U-shape cross section shape and with an upper face and both side faces opened, a lid body 3 closing the upper face of the case body 2, and an end plate 4 closing both side faces of the case body 2 is provided with a support part 2e arranged in the case 5, a printed-circuit board 6 supported by the support part 2e mounted with lighting circuit components 6a, and an insulation filling material 7 filled in the case 5. The filling material 7 contains the printed-circuit board 6, and covers the mounted lighting circuit components 6a. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a discharge lamp lighting device and a lighting fixture using the discharge lamp lighting device.

  2. Description of the Related Art In recent years, an inverter type electronic ballast composed of electronic components such as semiconductor elements is used as a lighting device for lighting a high pressure discharge lamp such as a high pressure sodium lamp or a metal halide lamp, or a low pressure discharge lamp such as a fluorescent lamp. Since these lighting devices are sometimes installed outdoors and are exposed to high humidity in an environment such as rain, snow, or the rainy season, the case for storing the lighting circuit components is configured in a sealed type.

  On the other hand, there is a discharge lamp ballast in which a bottomed metal case is filled with an insulating filler of resin for the purpose of reducing the temperature rise of the ballast (see Patent Document 1). In this assembly, a bottomed metal case is erected in the assembly of the ballast, the ballast body is inserted from the case opening, and an insulating filler is injected.

On the other hand, when fixing the printed circuit board which comprises the lighting device of a high pressure discharge lamp in the case of a lighting fixture, there exists a thing fixed using a filler (refer patent document 2).
JP 2000-11746 A JP 2003-168318 A

  However, in the case shown in Patent Document 1, the case is erected, that is, the resin is filled with an insulating filler in a vertical position. After that, it usually takes about 1 to 2 days for the resin to harden and stabilize. Therefore, in order to prevent the resin from flowing out of the case, the case remains in a vertical position without being tilted until the resin is hardened. It is necessary to store it in.

Therefore, in this case, storage stability becomes a problem. In addition, since the filler is injected in the case in a vertical state, the filler must be injected to a considerable level where the ballast body is hidden.

  Next, the thing shown by patent document 2 uses the filler in order to fix a printed circuit board to a case, and there is also no purpose of sealing a lighting device fundamentally to a case.

  The present invention relates to a discharge lamp lighting device and a lighting fixture that can be stably placed in a cured state by injecting an insulative filler in a horizontally long sealed case, and can be reduced in the amount of filler. The purpose is to provide.

  The invention of the discharge lamp lighting device according to claim 1 has a substantially U-shaped cross section, a horizontally long case body whose upper surface and both side surfaces are open, a lid that closes the case body upper surface, and both side surfaces of the case body In a discharge lamp lighting device that constitutes a case from an end plate that closes the casing, a support portion provided in the case, a printed circuit board that is supported by the support portion and on which the lighting circuit components are mounted, and an insulation that is filled in the case The filler includes a printed circuit board and covers the mounted lighting circuit component.

  The case where the lighting circuit component is covered with the filler includes the case where all the lighting circuit components are covered and the case where, for example, the upper part of the component is covered, that is, the upper part is not covered.

  The discharge lamp lighting device according to claim 2 is the discharge lamp lighting device according to claim 1, wherein the lighting circuit component includes an electrolytic capacitor having an explosion-proof valve, and the filler includes a printed circuit board and is mounted. Among the lighting circuit components, the electrolytic capacitor is covered with at least a space corresponding to the explosion-proof valve.

The discharge lamp lighting device according to claim 3 is the discharge lamp lighting device according to claim 1 or 2, wherein the upper end of the coexistence rising wall of the case body is among the lighting circuit components mounted on the printed circuit board, It is characterized by being configured to be higher than the height of the tallest circuit component.

  The discharge lamp lighting device according to claim 4 is characterized in that in the discharge lamp lighting device according to claims 1 to 3, filling material passing means for allowing the filling material to flow below the printed circuit board is formed. .

  The filler passing means includes a case where a through hole is formed in the printed board and a case where a gap is formed between the case and the printed board. In short, it is only necessary to form a means for the filler to flow below the printed circuit board.

A discharge lamp lighting device according to a fifth aspect is the discharge lamp lighting device according to the first to fourth aspects, wherein a partition is provided in the case to partition the printed circuit board and the case main body. It is characterized by.

The discharge lamp lighting device according to claim 6 is the discharge lamp lighting device according to any one of claims 1 to 5, wherein the case includes an upper portion of the lighting circuit component mounted on the printed circuit board, A partition that partitions the lid from the lid that closes the case main body is provided.

In Claims 5 and 6, the partition body may be made of a synthetic resin and may be formed in a plate shape, or may be formed in a film shape.

The discharge lamp lighting device according to claim 7 is the discharge lamp lighting device according to any one of claims 1 to 6, wherein the filler includes a plurality of filler layers in the case by a plurality of types of fillers. It is formed.

The filling layer may be partially formed without being formed over the entire surface of the case. For example, different types of fillers may be used depending on the periphery of a specific part and other parts, thereby forming a plurality of packed layers.

The lighting fixture according to claim 8 is a fixture main body provided with the discharge lamp lighting device according to any one of claims 1 to 7, a discharge lamp that is lit by the discharge lamp lighting device, and a discharge lamp. It was characterized by comprising.

  According to the present invention, in a horizontally long case, a discharge lamp lighting device capable of injecting an insulative filler in a horizontal orientation, stably storing the filler in a cured state, and reducing the filler, and A luminaire can be provided.

  An embodiment of a discharge lamp lighting device and a lighting fixture of the present invention will be described with reference to the drawings. First, in the first embodiment, FIG. 1 to FIG. 3 show a discharge lamp lighting device 1, FIG. 1 is an exploded perspective view, FIG. 2 is a longitudinal sectional view showing a cover body removed, and FIG. It is a perspective view shown. In FIG. 1, a discharge lamp lighting device 1 includes a case main body 2, a lid 3 that closes the upper surface of the case main body 2, and end plates 4 that close both side surfaces of the case main body 2. The printed circuit board 6 provided in the case 5 and the insulating filler 7 filled in the case 5.

  The case main body 2 has a substantially U-shaped cross section and is formed by extrusion using a metal material such as aluminum. The overall shape of the case 5 is horizontally long, the upper surface in the longitudinal direction and both side surfaces are open, and the upper surface opening 2a and the side surface opening 2b are formed, respectively. In addition, a groove 2c is formed in the upper end surface along the longitudinal direction, and a plurality of heat radiation fins 2d are formed in the outer peripheral surface along the longitudinal direction. Further, on both sides of the inner peripheral surface, concave grooves 2e are formed as support portions for supporting the printed circuit board 6.

The printed circuit board 6 includes a lighting circuit component 6a and the like for lighting a discharge lamp mounted on the board at a high frequency. The lighting circuit component 6a is an electronic component such as a field effect transistor, a diode, a full-wave rectifier, a smoothing capacitor, a resonance capacitor, or a resonance inductor. The printed circuit board 6 is made of, for example, a glass epoxy material or a polybutylene terephthalate (PBT) material having a rectangular shape, and is inserted into a concave groove 2 e provided on the inner surface of the case body 2. Both end portions of the recessed groove 2 e are opened facing the side surface opening 2 b of the case body 2. The printed circuit board 6 is inserted into the groove 2 e from either side of the side opening 2 b of the case body 2 and supported by the case body 2.

In addition, through holes are formed in a plurality of locations on the printed circuit board 6 as filler passing means for facilitating the later-described insulating filler 7 to flow below the printed circuit board 6 (not shown). .)

  The end plate 4 that closes both sides of the case 5 is made of aluminum and is formed in a shape and size of a substantially cross-sectional outer shape of the case 5, and a plurality of mounting screw through holes 4a are formed in the vicinity of the outer periphery thereof. . A waterproof packing 8 is provided inside the end plate 4. The waterproof packing 8 has substantially the same shape as the end plate 4, and a screw through hole 8 a is formed at the same position as the end plate 4. When the end plate 4 is attached so as to close the side surface openings 2b of the case body 2, the waterproof packing 8 is attached in close contact with the side surface openings 2b at the same time.

A plurality of screw portions 2f are provided on the end surfaces of the side surface openings 2b of the case body 2, and the screws 9 are respectively inserted through the plurality of mounting screw through holes 4a formed in the end plate 4, and subsequently, the waterproof packing. 8 through the screw through hole 8a and screwed to the screw portion 2f. Thereby, both side surface opening 2b of case main body 2 will be airtightly obstruct | occluded.

The lid body 3 is formed in a substantially arc shape in cross section, and convex portions 3a that are fitted into the concave grooves 2c of the case 5 are formed along the longitudinal direction at lower ends on both sides.

And if the convex part 3a of the cover body 3 fits into the ditch | groove 2c of the case main body 2, the case main body 2 and the cover body 3 will be integrated. At this time, there is no gap between the concave groove 2c and the convex portion 3a so that rainwater and moisture do not enter the case 5 from the concave groove 2c and the convex portion 3a. Therefore, the upper surface opening 2a of the case body 2 is hermetically closed. The outer surface and inner surface of the case body 2 and the outer surface and inner surface of the lid 3 are each subjected to an alumite (corrosion resistant oxide coating) treatment for rust prevention.

The end plate 4 and the waterproof packing 8 are formed with insertion holes 10 such as lead wires.

Furthermore, in order to improve the sealing performance of the case 5, a paint may be applied as a weathering material at the boundary between the case body 2, the lid body 3, and the end plate 4.

As shown in FIG. 2, the case 5 is filled with an insulating filler 7, for example, a silicone resin. The filler 7 is filled to a level that covers the printed circuit board 6 and all the lighting circuit components 6 a mounted on the printed circuit board 6. That is, the filler 7 is injected to a level where the tallest part is hidden. However, the upper end of the case 5 is not fully filled, and the space 11 is left in the upper part. That is, the height of the case body 2 is configured to be higher than that of the tallest part.

  Next, an outline of a method for filling the insulating filler 7 in the case 5 will be described. With the printed circuit board 6 installed on the case body 2 and the upper surface of the case 5 opened, the case 5 is placed sideways, and an insulating filler 7 such as a silicone resin is injected from the upper surface opening 2a. The filler injected from the top toward the surface of the printed circuit board 6 passes through the through-hole as a filler passing means of the printed circuit board 6 and flows into the lower side of the printed circuit board 6.

  The injection amount of the filler 7 is set to a level at which all the lighting circuit components 6 a are covered with the filler 7. After the injection is completed, the upper surface of the case 5 is closed with the lid 3, and the filling material 7 is cured and allowed to stand for storage until it is stabilized.

  According to this embodiment, it is possible to inject an insulative filler while the case is placed horizontally, and to stably store the time required until the filler is cured. Further, since the upper surface opening of the case main body has a relatively wide area, workability is improved when the filler is injected.

  Further, since the case body is formed by extrusion molding with a metal material such as aluminum, it is easy to manufacture, and the sealing performance is enhanced as compared with the case where the case is configured by combining press plates.

  Furthermore, since all the lighting circuit components including the printed circuit board are covered with the filler, that is, the lighting circuit components are buried in the filler and are not exposed on the surface, combined with the sealing property of the case, A discharge lamp lighting device excellent in insulation can be provided. In particular, it is suitable when applied to a luminaire used outdoors.

  Further, although the filling material covers all the lighting circuit components, it is not necessary to fill the filling material up to the full height of the case, so that the amount of use of the filling material can be reduced.

In the present embodiment, the case where the filler 7 is injected to a level covering all the lighting circuit components 6a and the lighting circuit components 6a are buried in the filler 7 has been described. In the case where the upper portion is not covered with the filler 7, that is, the head of the circuit component is not partially covered with the filler 7 and may protrude into the space 11.

Next, a second embodiment of the present invention will be described. In addition, the same code | symbol is attached | subjected to the same or equivalent part as the above-mentioned embodiment, and the detailed description is abbreviate | omitted.

4 and 5 show the discharge lamp lighting device 1, FIG. 4 is an exploded perspective view, and FIG. 5 is a longitudinal sectional view showing the cover body removed. The difference from the above-described embodiment is that, in the present embodiment, a partition plate 20 is provided as a partition that partitions the space between the lower side of the printed circuit board 6 and the lower surface of the case body 2.

The partition plate 20 is a solid body that is rectangular and has no holes or the like. For example, the partition plate 20 is made of a polybutylene terephthalate (PBT) material or the like, and is inserted into a recessed groove 2g provided on the inner surface of the case body 2. .

As shown in FIG. 5, the filler 7 that has flowed into the back side of the printed circuit board 6 is blocked by the partition plate 20 that partitions the space below the printed circuit board 6, and does not flow to the lower part 12 of the partition plate 20.

According to this embodiment, in addition to the effects of the above-described embodiment, the amount of filler used can be reduced by the partition plate. Depending on the product type of the discharge lamp lighting device, the printed circuit board and the lighting circuit component to be mounted may be different. However, it is effective to make the case common regardless of the product type. That is, when the lighting circuit component mounted on the back side of the printed circuit board is shorter than a normal product, the lower part of the printed circuit board becomes an extra space. On the other hand, by providing the partition plate, the surplus space can be reduced and the filler can be reduced.

Next, a third embodiment of the present invention will be described. In this embodiment, a plurality of insulating fillers are provided. FIG. 6 shows a cross-sectional view of the discharge lamp lighting device 1. There are two types of fillers: the printed board 6 and the first filler 7a around the lighting circuit component 6a mounted on the printed board 6, and the second filler 7b disposed in other portions. Materials are used to form each packed bed.

Urethane resin or silicone resin is used as the first filler 7a, and polyester resin or pitch compound resin is used as the second filler 7b. This is because the lighting circuit component 6a is required to have excellent heat dissipation and waterproof properties and low hardness that can be absorbed when the component is stressed. However, since these materials are generally expensive, the necessary minimum amount is selected, and a relatively inexpensive material is selected as the second filler 7b.

According to this embodiment, in addition to the effects of the above-described embodiments, an inexpensive discharge lamp lighting device can be obtained.

In the present embodiment, for example, when many parts with large calorific values are provided on the front side of the printed circuit board, the type of filler may be changed corresponding to the front and back of the printed circuit board. Good. In short, various fillers may be selected and combined depending on the purpose.

Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 7 shows a schematic side view of the discharge lamp lighting device.

In the present embodiment, the relationship between the height of the lighting circuit component and the rising wall of the case main body will be mainly described regarding the injection of the filler. The above embodiment employs a slightly different configuration such as the printed board mounting position and the lid configuration, etc., but the same or corresponding parts as in the above embodiment are given the same reference numerals, and the details The detailed explanation is omitted.

First, the case body 2 having a substantially U-shaped cross section includes a bottom wall 2A and rising walls 2B that rise from both sides of the bottom wall 2A. On the printed board 6, lighting circuit components 6 a such as a field effect transistor, a diode, a smoothing capacitor, and a resonance inductor are mounted.

And although the lighting circuit component 6a mounted on the printed circuit board 6 has various heights, the case body 2 is compatible and the upper end of the wall 2B is higher than the tallest component. ing.

With such a configuration, the filler does not overflow from the case body 2 to the outside even when the filler is injected to a level that covers the tallest lighting circuit component 6a as shown by the phantom line A.

As described above, according to the present embodiment, the height of the coexistence rising wall 2B of the case body 2 and the height of the lighting circuit component 6a is taken into consideration, so that the lighting circuit component 6a is reliably covered with the filler. Can do.

Next, a fifth embodiment of the present invention will be described with reference to FIG. FIG. 8 shows a schematic side view of the discharge lamp lighting device.

The present embodiment is characterized in that a partition that partitions between the lighting circuit component 6a mounted on the printed circuit board 6 and the lid 3 that closes the case body 2 is provided. Similarly, the same or corresponding parts as those of the above-described embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

First, the lighting circuit component 6a is mounted on the printed circuit board 6, and the partition body 20 that divides the space between the lower side of the printed circuit board 6 and the case body 2 is the same as described in the second embodiment. Is provided.

In addition, in the space between the tallest component of the lighting circuit component 6a and the inner surface of the lid 3, a partition plate 21 as a partition that divides this space is formed in the recessed groove 2h formed on the inner surface of the case body 2. Inserted and provided. The partition plate 21 has a filler injection port (not shown). Except for this point, the partition plate 21 has substantially the same configuration as the partition plate 20 below.

A plurality of concave grooves 2h are formed on both sides of the inner surface of the case body 2, and this serves as a guide rail for the partition plate 21, and the position of the partition plate 21 is determined according to the height of the lighting circuit component 6a. In other words, the partition plate 21 can be installed at an appropriate position by selecting the concave groove 2h into which the partition plate 21 is inserted according to the height of the lighting circuit component 6a. Incidentally, in the present embodiment, since five pairs of the concave grooves 2h are formed, the position can be selected in five stages.

In addition, the inlet for the filler 7 may be formed by providing a gap between the partition plate 21 and the case main body 2 without forming it directly in the partition plate 21.

Furthermore, the lower partition plate 20 may also be formed with a plurality of grooves on the inner surface of the case body 2 so that the installation position can be selected according to the height of the lighting circuit component 6a mounted on the back side of the printed circuit board 6. .

As described above, according to the present embodiment, the filler 7 covers the lighting circuit component 6 a by the injection of the filler 7, while the filler 7 flowing into the back side of the printed circuit board 6 is dammed by the partition plate 20. It is stopped and does not flow below the partition plate 20.

Moreover, excessive injection | pouring of the filler 7 is prevented by the upper partition plate 21, the usage-amount of the filler 7 can be decreased, and an economical effect can be achieved. Furthermore, since the amount of filler 7 used can be reduced, the weight of the product can be reduced.

Next, a sixth embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the same or equivalent part as the above-mentioned embodiment, and the detailed description is abbreviate | omitted.

FIG. 9 is a perspective view showing an electrolytic capacitor as a lighting circuit component. The electrolytic capacitor 60 is configured by incorporating a capacitor element in a cylindrical aluminum case 60a. The upper part of the case 60a has a generally known explosion-proof valve 60b, and the lower part is provided with an electrode lead 60c. In the electrolytic capacitor 60, the internal pressure may rise due to external factors such as overvoltage and overcurrent or failure of the capacitor itself, and the case 60a may burst. To reduce this shock, the explosion-proof valve 60b is provided. Yes.

By the way, when such an electrolytic capacitor 60 is used as a lighting circuit component of a discharge lamp lighting device, the electrolytic capacitor 60 is mounted on the printed circuit board 6, and as shown in FIG. If the lighting circuit component 6a including the capacitor 60 is completely filled, the filler contacts the explosion-proof valve 60b and is sealed, and the explosion-proof valve 60b may not open as desired.

Therefore, in this embodiment, the lighting circuit component 6a is covered with the filler 7, but a predetermined space is provided in at least a portion corresponding to the explosion-proof valve 60b of the electrolytic capacitor 60 so that the explosion-proof valve 60b can be normally opened. It is.

First, a first embodiment will be described with reference to FIG. FIG. 10 is a longitudinal sectional view showing the discharge lamp lighting device with the lid removed. In the figure, an electrolytic capacitor 60 is mounted on the printed circuit board 6. A cap 61d made of a synthetic resin cap having an insulating property is attached to the upper portion of the electrolytic capacitor 60 with a predetermined space 61 present.

That is, a space is provided corresponding to the explosion-proof valve 60b of the capacitor 60. Therefore, although the electrolytic capacitor 60 is covered with the filler 7, a space 61 is left corresponding to the explosion-proof valve 60b.

Next, a second embodiment will be described with reference to FIG. The difference from the first embodiment described in FIG. 10 is that not only the upper part of the electrolytic capacitor 60 but also the whole is covered with a cover 60d. Also in this embodiment, since the space 61 is provided corresponding to the explosion-proof valve 60b, the electrolytic capacitor 60 is covered with the filler 7, but the space 61 is left corresponding to the explosion-proof valve 60b.

Next, a third embodiment will be described with reference to FIG. FIG. 12 is a partial longitudinal sectional view showing the mounted state of the electrolytic capacitor 60. In the present embodiment, a form in which the periphery of the electrolytic capacitor 60 is covered with a cylindrical cover 60d having an open top is shown. Also in this embodiment, the upper part of the electrolytic capacitor 60 is opened, and a space 61 corresponding to the explosion-proof valve 60b is provided.

Next, a fourth embodiment will be described with reference to FIG. FIG. 13 is a partial longitudinal sectional view showing the mounted state of the electrolytic capacitor 60. In the present embodiment, the portion of the explosion-proof valve 60b of the electrolytic capacitor 60, that is, the head of the capacitor 60 is left and the filler 7 is filled. The other lighting circuit components are parts shorter than the electrolytic capacitor 60 and are covered with the filler 7.

In this case, the other lighting circuit components are short and are preferably covered with the filler 7, but in this embodiment, some of the other lighting circuit components are electrolytic capacitors 60. It is taller than that, and the head of the part is not covered with the filler 7 and is allowed to protrude.

As described above, also in this embodiment, the space 61 is provided corresponding to the explosion-proof valve 60b.

In each embodiment, the position of the explosion-proof valve of the electrolytic capacitor is not limited to the upper part of the capacitor. When an explosion-proof valve is provided at the lower part of the capacitor, it is sufficient that a space exists corresponding to the explosion-proof valve.

Therefore, according to the present embodiment, the filling material covers the mounted lighting circuit component leaving a space corresponding to the explosion-proof valve of the electrolytic capacitor, so that the normal operation of the explosion-proof valve can be ensured.

Next, a seventh embodiment of the present invention will be described with reference to FIG. FIG. 14 is an exploded perspective view of the discharge lamp lighting device.

In the present embodiment, a lid that closes the upper surface of the case main body and end plates that close both sides of the case are integrally configured. In addition, the same code | symbol is attached | subjected to the same or equivalent part as the above-mentioned embodiment, and the detailed description is abbreviate | omitted.

In FIG. 14, the discharge lamp lighting device includes a case 5 composed of a case body 2, a lid 3 that closes the upper surface and both sides of the case body 2, a printed circuit board 6 and a case provided in the case 5. 5 is composed of an insulating filler filled in the inside. Both the case main body 2 and the lid 3 are made of metal such as aluminum.

The lid body 3 is composed of an upper lid portion 3A for closing the upper surface of the case body 2 and end plate portions 3B for closing both sides of the case body 2. The end plate portion 3B has a substantially cross-sectional shape of the case, A screw through hole 4 a is formed in a size and is attached to the case body 2.

The end plate portion 3B is fixed to and integrated with the side portion of the upper lid portion 3A by welding or the like. The upper lid portion 3A and the end plate portion 3B may be integrally formed by casting or the like.

Reference numeral 15 denotes an inner end plate that closes both sides of the case body 2 prior to the end plate portion 3B of the lid 3. The inner end plate 15 is made of an insulating heat-resistant plastic material, and has a screw through hole 15a in a shape along the substantially cross-sectional shape of the case, like the end plate portion 3B of the lid 3. .

Next, the assembly process of this discharge lamp lighting device will be described. First, the inner end plate 15 is attached to the case body 2 with screws. In this state, the filler is injected from the upper opening of the case body 2. In this case, the inner end plate 15 serves as a weir to prevent the filler from flowing out from the side of the case body 2. Subsequently, the lid 3 is attached to the case body 2. The upper opening 3 </ b> A of the lid 3 closes the upper opening of the case body 2, and the end plate 3 </ b> B of the lid 3 overlaps the inner end plate 15 to close both sides. Will be. At this time, since the inner end plate 15 is a plastic material and has a predetermined elasticity, it serves as a packing for the end plate portion 3B of the lid 3. Thereafter, store until the filler is cured and stable.

As described above, according to the present embodiment, in the lid body 3, the upper lid portion 3 </ b> A that closes the upper surface of the case body 2 and the end plate portions 3 </ b> B that close both sides of the case body 2 are integrally configured. The process can be simplified.

Further, since the inner end plate 15 is made of a plastic material, it can have a function of weir to prevent the filler from flowing out and a function of packing, and can exhibit an effective function.

In addition, the material of the waterproof packing in the first embodiment is not limited, but a plastic material may be used as in this embodiment.

In each of the embodiments described above, the case where the printed board is inserted and supported in the concave groove of the case main body has been described. However, a support portion may be provided on the end plate to support the printed board.

In addition, the filler passing means has been described with a through-hole formed in the printed board, but the filler passing means is configured so that a gap is formed between the printed board and the end plate. You may make it a filler flow into the printed circuit board lower side.

Next, an embodiment of the lighting fixture of the present invention will be described.

FIG. 15 is a perspective view showing a street lamp 30 as a lighting fixture. The main body 31 is formed in a substantially box shape having an open bottom surface, and is provided with a high-pressure discharge lamp as a discharge lamp, a reflector, and the like. The stepped pole 32 is erected on a concrete foundation 34 partially embedded in the underground 33. And the discharge lamp lighting device 1 is accommodated in the stepped pole.

  Since the discharge lamp lighting device 1 is excellent in insulation and formed in a waterproof shape, even if rainwater or moisture enters the stepped pole in which the discharge lamp lighting device 1 is accommodated, moisture or moisture is contained in the case. Is prevented from entering.

It is a disassembled perspective view which shows 1st Embodiment of the discharge lamp lighting device of this invention. It is the longitudinal cross-sectional view. It is a perspective view of the same assembly state. It is a disassembled perspective view which shows 2nd Embodiment of the discharge lamp lighting device of this invention. It is the longitudinal cross-sectional view. It is a cross-sectional view which shows 3rd Embodiment of the discharge lamp lighting device of this invention. It is a schematic side view which shows the 4th Embodiment. It is a schematic side view which shows the 5th Embodiment. It is a perspective view which shows an electrolytic capacitor. It is a longitudinal cross-sectional view which shows 6th Embodiment of the discharge lamp lighting device of this invention. It is the longitudinal cross-sectional view. It is the same part longitudinal cross-sectional view. It is the same part longitudinal cross-sectional view. It is a disassembled perspective view which shows the said 7th Embodiment. It is a perspective view which shows embodiment of the lighting fixture of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Discharge lamp lighting device 2 Case main body 2B Standing wall 2e Support part 3 Cover body 4 End plate 5 Case 6 Printed circuit board 6a Lighting circuit component 7 Filler 20, 21 Partition 30 Lighting fixture 60 Electrolytic capacitor 60b Explosion-proof valve 61 Space

Claims (8)

A discharge lamp that has a substantially U-shaped cross-section and is composed of a horizontally long case body whose upper surface and both side surfaces are open, a lid that closes the upper surface of the case body, and an end plate that closes both side surfaces of the case body. In the device
A support provided in the case;
A printed circuit board mounted with a lighting circuit component supported by a support portion;
An insulating filler filled in the case;
The discharge lamp lighting device is characterized in that the filler includes a printed circuit board and covers a mounted lighting circuit component.   The lighting circuit component includes an electrolytic capacitor having an explosion-proof valve, and the filler includes a printed circuit board, and the mounted lighting circuit component covers at least a space corresponding to the explosion-proof valve of the electrolytic capacitor. The discharge lamp lighting device according to claim 1.   The upper end of the rising wall of the case main body is configured to be higher than the height of the tallest circuit component among the lighting circuit components mounted on the printed circuit board. Item 3. A discharge lamp lighting device according to Item 2.   The discharge lamp lighting device according to any one of claims 1 to 3, wherein a filler passing means is provided for allowing the filler to flow downward of the printed circuit board. The discharge lamp lighting device according to any one of claims 1 to 4, wherein a partition is provided in the case for partitioning the printed circuit board and the case main body.   6. A partition body is provided in the case for partitioning between a lighting circuit component mounted on a printed circuit board and a lid body for closing the case body. The discharge lamp lighting device according to any one of the above. The discharge lamp lighting device according to any one of claims 1 to 6, wherein a plurality of filler layers are formed in the case by a plurality of types of fillers. A discharge lamp lighting device according to any one of claims 1 to 7;
A discharge lamp lit by a discharge lamp lighting device;
An instrument body provided with a discharge lamp;
The lighting fixture characterized by comprising.

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