JPH09237510A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire capable of reducing a cost by preventing flawing of a wire by a layered core of a discharge lamp stabilizer in a process of manufacture. SOLUTION: A device comprises a bottomed tubular appliance body 12, lamp holder 20 mounted in a lower side of this main unit, discharge lamp stabilizer 25 having a layered iron core 27 to be received to a lower part in the equipment main unit and a filler 30 with which inside the equipment main unit is charged by burying the stabilizer 25. A lighting equipment, provided with a wire through hole 18 inserting wires 33a, 33b connecting the stabilizer 25 and a holder 29 in a position concealed to be covered with the stabilizer 25 in a bottom wall 12a of the appliance body 12, is premissed on an assumption. A wire fret groove 19, partly dislocated from a projection area to the bottom wall 12a of a layered core 26 also to position a part except partly this part in the projection area, is formed in the bottom wall 12a. The wire through hole 18 is made to communicate with this groove 19, partly the wires 33a, 33b are drawn around through the groove 19 to be arranged. In this way, the iron core 26 is prevented from flawing the wire.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting fixture installed on a mounting surface such as a high ceiling such as a warehouse or an entrance for lighting.

[0002]

2. Description of the Related Art FIG. 7 is a side view partially illustrating a structure of a conventional high-ceiling lighting fixture. In FIG. 7, reference numeral 1 denotes a fixture main body attached to a lower side of a ceiling 2. A lamp holder 3 is attached to the lower side of this, and the holder 3 has an H
A high-intensity lamp 4 such as an ID lamp is attached.
In addition, 5 is a power supply box.

The instrument body 1 is made of an aluminum alloy die cast and is formed into a cylindrical shape with a bottom. As shown in FIGS. 8 and 9, the instrument body 1 has an inner surface from the bottom surface of the body 1. Four screw receiving protrusions 6 each having a columnar shape and extending in the up-down direction are provided integrally with each other so as to extend close to the upper end opening. The power supply box 5 is screwed onto the screw receiving projections 6. An electric wire passage hole 1a is provided in the central portion of the bottom wall 1b of the instrument body 1 so as to penetrate in the vertical direction.

As shown in FIGS. 7 and 8, a discharge lamp ballast 7 having a laminated iron core 7a and a coil 7b combined with the laminated iron core 7a in the lower part of the instrument body 1 covers the wire passage hole 1a. The ballast 7
Are buried and filled with the filler 8. Further, in the upper part of the instrument body 1, another electric component 9 such as a power factor improving capacitor is housed. Discharge lamp ballast 7 and electrical components 9
The lamp holder 3 and the lamp holder 3 are electrically connected to each other via an electric wire 10 which is wired through the electric wire passage hole 1a.

The filler 8 is made of unsaturated polyester having good thermal conductivity. By embedding the discharge lamp ballast 7 with this, the ballast 7 is fixed to the lower part of the main body 1 of the appliance. The moisture resistance of the discharge lamp ballast 7 is improved. Moreover, the heat generated in the discharge lamp ballast 7 is quickly transmitted to the instrument body 1 by the filler 8, and the body 1
By discharging the discharge lamp ball 7 from the outer surface to the surroundings, the discharge lamp ballast 7 can be miniaturized and thus the instrument body 1 can be miniaturized. In addition, the electric wire through hole 1a is provided within the projected area of the discharge lamp ballast 7 on the bottom wall 1b of the instrument body 1, and the through hole 1a is covered with the discharge lamp ballast 7 so that they are horizontal. The instrument main body 1 can be formed in a small size as compared with the configuration in which the positions are displaced from each other in the direction.

[0006]

However, as described above, the electric wire 10 passing through the electric wire passage hole 1a provided in the projected area of the discharge lamp ballast 7 on the bottom wall 1b of the appliance body 1 is shown in FIG. As shown, since the wiring is sandwiched between the bottom wall 1b surface and the lower surface of the laminated iron core 7a of the discharge lamp ballast 7, the discharge lamp ballast 7 is installed on the inner bottom portion of the instrument body 1. The posture is unstable, and it is easy to move with the filling process of the filler 8 or the like in the manufacturing process.

Therefore, the laminated iron core 7 having a large weight
The insulating garment of the electric wire is easily damaged due to a right angle corner formed by the lower surface and the side surface of a. Therefore, in consideration of such a point, conventionally, it is necessary to cover the predetermined portion of the electric wire 10 with a protective tube made of an insulating material, wind a protective tape, and take other insulating protection measures. There is a problem of becoming.

Therefore, the first problem to be solved by the present invention is to provide a lighting fixture which can prevent the electric wire from being damaged by the laminated iron core of the discharge lamp ballast in the manufacturing process and can reduce the cost. Especially.

Further, as described above, the discharge lamp ballast 7 may move in the instrument body for some reason during the manufacturing process, and accordingly, the discharge lamp ballast 7 is provided at one end portion in the longitudinal direction of the discharge lamp ballast 7. The terminal portion 7c may approach or contact the metallic instrument body 1 within a prescribed insulation distance or less. Therefore, in consideration of these points, it is necessary to take an insulating measure (for example, winding an insulating tape or the like) on the terminal portion 7c as well, so that there is a problem that the cost increases accordingly.

Therefore, a second problem to be solved by the present invention is to solve the above-mentioned first problem, and at the same time, without requiring special insulation measures for the terminal part, the terminal part and the instrument body An object of the present invention is to provide a lighting fixture capable of ensuring electrical insulation between the lighting fixtures.

Further, the luminaire has a wattage of the lamp 4 different from 200 to 400 depending on its use, and the discharge lamp ballast 7 is also used with the ability to match the wattage of the lamp 4. It When selecting the discharge lamp ballast 7, the laminated core 7a is left as it is and the coil 7b is
Although the wire diameter and the number of turns may be changed, the iron core corresponding to the change in size of the laminated iron core 7a without changing the coil 7b is superior in the following point. When the capacity of the discharge lamp ballast 7 is changed by forming a smaller laminated iron core based on the maximum wattage lamp, it is necessary to maintain the core material cost and the form of the laminated iron core. Since the welding length is shortened, the cost can be reduced, and the weight of the discharge lamp ballast 7 and the entire lighting fixture can be reduced. However, even in the case of using various discharge lamp ballasts 7 obtained by dealing with the iron core, it is necessary to take the above-mentioned measures for insulating the electric wire 10 and the terminal portion 7c, which results in a high cost. Does not change.

Therefore, a third problem to be solved by the present invention is to solve the above first and second problems while surely disposing different types of discharge lamp ballasts at predetermined positions corresponding to the respective types. In other words, it is to provide a lighting fixture in which the fixture main body can be commonly used.

[0013]

SUMMARY OF THE INVENTION The present invention comprises a tubular metal instrument body with a bottom, a lamp holder attached to the lower side of the body, a laminated iron core and a coil combined therewith. A discharge lamp ballast formed and housed in the lower part of the fixture body, and a filler filled in the fixture body by embedding the ballast, the discharge lamp ballast and the lamp holder. It is premised on a lighting fixture which is provided at a position where a wire passage hole through which a wire for connecting the above is passed is covered with the discharge lamp ballast on the bottom wall of the fixture body.

In order to solve the first problem, the invention according to claim 1 is partly out of the projected area of the laminated iron core of the discharge lamp ballast onto the bottom wall, and partly An electric wire routing groove whose portion other than that is located in the projected area is formed in the bottom wall, the electric wire through hole is communicated with the routing groove, and a part of the electric wire is passed through the electric wire routing groove to route the wiring. It will be done.

According to the first aspect of the present invention, the wire routing groove provided in the bottom wall of the appliance body accommodates the wire therein, and the bottom wall and the discharge lamp ballast mounted thereon are laminated. The wire is prevented from being sandwiched between the core and the core, the installation state of the discharge lamp ballast on the bottom wall is stabilized, and the wire is routed around the corner of the laminated core to be routed.

In order to solve the second problem, the invention of claim 2 forms a rectangular concave portion corresponding to the shape of the lower end surface of the laminated iron core in the bottom wall of the instrument body, and in the concave portion Is provided with the wire passage hole, the wire routing groove is provided inside and outside the recess, and the lower end of the laminated core is fitted in the recess.

In the second aspect of the present invention, the recess formed in the bottom wall of the instrument body is fitted with the lower end of the laminated iron core to position the discharge lamp ballast at a predetermined installation position, During the manufacturing process, the discharge lamp ballast is held so that it does not move carelessly inside the fixture body.

In order to solve the third problem, in the invention of claim 3, both end portions in the longitudinal direction of the recessed portion have at least one step portion, and each of them has a stepped shape. It is characterized by.

In the invention of claim 3, the discharge lamp ballast having a laminated iron core of a size corresponding to the distance is fitted to the step portions located at the same height among the step portions of the recess. And position. Thereby, one discharge lamp ballast suitable for the lamp to be used can be selected and installed from a plurality of types of discharge lamp ballasts for the same fixture body.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention will be described below with reference to FIGS. The luminaire according to the first embodiment is for a high ceiling, and is used by being installed downward on the installation surface shown in FIG. 1, for example, the lower surface of the ceiling 11 such as an entrance.

As shown in FIGS. 1 and 2, this instrument has an instrument body 12 made of metal. This body 12
Is a metal material having a good heat dissipation property, for example, an aluminum alloy that is molded by die casting,
It has a cylindrical shape with a bottom wall 12a, and the top surface is open.

By making the instrument body 12 cylindrical,
The surface area, in other words, a large heat radiation area can be secured in comparison with the rectangular tubular shape, and it can be attached to the ceiling 11 in any orientation without directionality, and moreover, the external appearance is also compared with the rectangular tubular shape. It is rounded and excellent. In addition, in the present invention, a fin for heat dissipation may be provided on the outer peripheral surface of the instrument body 12 to further improve the heat dissipation performance, and the instrument body 12 has a shape other than a square tubular shape. The non-square tubular shape is desirable, but the shape is not limited to this, and a square tubular shape may be used.

The instrument body 12 as shown in FIGS.
On the inner surface of the, four screw receiving projections 1 extending vertically from the bottom wall 12a to the vicinity of the upper end opening and forming a columnar shape.
3 are integrally provided. Fixing holes 13a (see FIG. 4) that open to the upper end surfaces of the screw receiving protrusions 13 are provided at the upper ends thereof.

Inside the instrument main body 12, a pair of partition walls 14 extending upward from the inner bottom surface thereof are integrally provided.
These partition walls 14 are raised higher than the height (thickness) of a discharge lamp ballast 26, which will be described later, and both ends thereof are connected to the inner peripheral surface of the instrument body 12. In the case of this embodiment, the partition walls 14 are installed over the pair of screw receiving convex portions 13, respectively,
Although they are integrally connected to the inner peripheral surface of the instrument main body 12 via the screw receiving convex portions 13, they may be directly connected to the inner peripheral surface of the instrument main body 12 without the screw receiving convex portion 13.

Moreover, as shown in FIGS. 3 to 5, both partition walls 14 are provided in parallel with each other, and a ballast for accommodating a discharge lamp ballast 26 described later between the pair of partition walls 14. The accommodation space 15 is partitioned and formed. As shown in FIG. 3, the relationship between the length A and width B of the accommodation space 15 and the length C and width D of the discharge lamp ballast described later is A> C, B.
> D, C> B.

Instrument main body 1 with one partition wall 14 facing each other
The inner surface of the column 2 has a columnar protrusion 1 rising from the bottom wall 12a.
6 are provided integrally. The protrusion 16 has the same length as the screw receiving protrusion 13, and has a positioning protrusion 16a at its upper end as shown in FIGS. 4 and 5.

The inner bottom surface of the instrument body 12, that is, the bottom wall 12
The upper surface of a is a horizontal surface, and the inner bottom surface thereof is located between the pair of partition walls 14 as shown in FIGS. 2, 4, and 5, and corresponds to the shape of the lower end surface of the laminated iron core 27 described later. A rectangular recess 17 is formed. The recess 17 is open to the upper surface of the bottom wall 12a. As shown in FIG. 2, the recess 17 has at least one step, for example, two steps 17a and 17b at both ends in the longitudinal direction, and has a step shape. First step portions 17a, 17 facing each other
a is at the same height position, and similarly, the second step portions 17b and 17b facing each other at a position one step lower than these are also at the same height position.

The first step portion 17a in the upper position is a discharge lamp stabilizing device having a laminated iron core of a size capable of exerting the ability corresponding to the maximum wattage (for example, 400 W) lamp of the luminaire. The second step 17b in the lower position is used for installing a lamp and has a corresponding capability when the luminaire uses a lamp with a wattage lower than the maximum wattage (eg 300W). It is used to install a discharge lamp ballast having a laminated iron core (smaller than the laminated iron core for the maximum wattage) of a size to exert its effect.

As shown in FIG. 4 and the like, the central portion of the bottom wall 12a of the appliance body 12, and hence the approximate central portion of the recess 17 (in other words, this position is when the discharge lamp ballast 26 described later is installed). , Which is located within the projected area of), is provided with an electric wire through hole 18 formed of, for example, a round hole penetrating in the vertical direction. Further, the bottom wall 12a is formed with an electric wire routing groove 19 which is opened on the upper surface thereof, extending inside and outside the recess 17. More specifically, the wire routing groove 19 has a projected area on the bottom wall 12a of the laminated core (to be described later, the concave portion 1).
A part is removed from 7) and a part other than this part is located inside the recess 17. This routing groove 1
The width and depth of 9 are larger than the wire diameters of the electric wires 30a and 30b described later, and the electric wire passage hole 18 communicates with the portion of the electric wire routing groove 19 located in the recess 17.

On the lower side of the instrument body 12 having the above-mentioned structure, FIG.
And the lamp holder 20 is attached as shown in FIG. Reference numeral 21 in FIG. 1 denotes a screw for connecting the holder 20 to the bottom wall 12a. A lamp 22 is detachably mounted inside the lamp holder 20. For this lamp 22, for example, a 200 W to 400 W HID lamp capable of high brightness illumination is adopted.

As shown in FIGS. 1 and 2, a power source box 23 made of sheet metal is provided on the upper surface of the instrument body 12. The power supply box 23 integrally has a flange protruding outward from the lower end of the cylindrical portion and supported by the upper ends of the respective convex portions 13 and 16, and screws (not shown) penetrating the flange are received on the respective screw receiving convex portions. It is attached by being screwed into the fixing hole 13a of the reference numeral 13. The appliance is installed by abutting the upper end of the power supply box 23 on the ceiling 11. Inside the power supply box 23, a terminal block 24 to which a power supply line (not shown) drawn from the ceiling 11 is connected is attached. Reference numeral 25 in FIG. 1 denotes a screw for mounting the terminal block 24. Although not shown, the flange is provided with a positioning groove to be fitted to the positioning protrusion 16a, and the fitting allows the power supply box 23 to be properly positioned with respect to the instrument body 12.

As shown in FIGS. 2 and 3, a discharge lamp ballast 26 for lighting the lamp 21 is housed in the ballast housing space 15 in the instrument body 12. The ballast 26 has a laminated iron core 27 and a coil 28 combined with the laminated iron core 27. As shown in FIG. 3, the laminated iron core 27 has a plane shape that is slightly rectangular and has a rectangular shape.
Reference numerals 8 respectively project from both longitudinal end surfaces of the laminated iron core 27. Further, reference numeral 29 in FIG. 2 denotes a terminal portion included in the discharge lamp ballast 26.

The bottom wall 12a in the ballast accommodation space 15
The discharge lamp ballast 26, which is housed in contact with, is arranged such that the lower end portion of the laminated iron core 27 is mounted on the step portion 17a or 17b of the concave portion 17 in the size thereof and fitted into the concave portion 17. With such an arrangement, the laminated iron core 27 does not completely close the upper surface opening of the wire routing groove 19 as shown in FIG. 2, but is housed and arranged by opening the end opposite to the wire through hole 18.

As shown in FIGS. 2 and 3, the ballast housing space 15 is filled with an unsaturated polyester filler 30 in which a discharge lamp ballast 26 is embedded. The upper surface of the filler 30 is set to a position lower than the upper end of the partition wall 14 and higher than the upper surface of the discharge lamp ballast 26 housed in contact with the bottom wall 12a. It should be noted that the lunar space 31 (see FIG. 3 and FIG. 4) located on both sides of the discharge lamp ballast 26 in the width direction and formed between the partition wall 14 and the inner surface of the appliance body 12 facing this partition wall 14 (see FIGS. 3 and 4). , Filler 3
0 is not filled.

As shown in FIG. 2, a capacitor 32 for improving the power factor is housed in the upper part of the instrument body 12. From the condenser 32 and the discharge lamp ballast 26 to the terminal block 2
The two electric wires 34 a and 34 b wired in four directions are connected to the terminal block 24, respectively. Further, both of the two electric wires 33a and 33b wired from the lamp holder 20 are guided into the instrument body 12 through the electric wire passage hole 18 and the electric wire drawing groove 19. And one electric wire 3
3a is connected to the terminal portion 29 of the discharge lamp ballast 26, and the other electric wire 33b is connected to the capacitor 32.

The wires 33a, 33b routed through the wire routing groove 19 as described above are not sandwiched between the bottom wall 12a and the heavy laminated iron core 27, and the iron core 25a has a lower end surface and side surfaces. It does not come into contact with the corners formed by.

The lighting device having the above-described structure is configured so that the electric wires 33a and 33b that are drawn out from the lamp holder 20 and pass through the electric wire passage hole 18 of the main body 12 of the apparatus and are routed inside the main body 12 of the apparatus as described above. The wire is routed through the wire routing groove 19 provided on the bottom wall 12a of the main body 12.

By the way, a part of the wire routing groove 19 is
The projected area of the discharge lamp ballast 26 on the bottom wall 12a,
In other words, since it is provided outside the area covered by the laminated iron core 27, the electric wires 33a and 33b are housed inside the electric wire routing groove 19 and the electric wires 33a and 33b are
33b can be prevented from being sandwiched between the bottom wall 12a and the laminated iron core 27 of the discharge lamp ballast 26 placed on the bottom wall 12a, and the electric wires 33a and 33b can be bypassed at the corners of the laminated iron core 27. It can be routed and wired. Such a state is shown in FIG. Moreover, by accommodating the electric wires 33a and 33b in the electric wire routing groove 19 as described above, the installation state of the discharge lamp ballast 26 on the bottom wall 12a can be stabilized.

Therefore, in the manufacturing process such as filling the filling material 30 into the ballast housing space 15, the discharge lamp ballast 26 is prevented from being inadvertently displaced on the bottom wall 12a, and with it. The electric wires 33a and 33b are prevented from being damaged at the corners of the laminated iron core 27. Therefore, it is possible to omit a special measure for insulation of the electric wires 33a and 33b, and the cost can be increased accordingly.

At this point, the wire routing groove 1 is formed on the bottom wall 12a.
It is possible to realize the discharge lamp ballast 26 by providing the recessed portion 17 in which the lower surface portion of the laminated iron core 27 is fitted in the bottom wall 12a and fitting the laminated iron core 27 there. It can be reliably positioned at a predetermined position inside the instrument body 12. Therefore, the recess 17 can provide a guideline for arranging the discharge lamp ballast 26, and the assembling thereof can be facilitated. In addition, the instrument body 1
In the structure in which the pair of partition walls 14 are provided in the second embodiment, the width B between them is made smaller than the length C in the longitudinal direction of the discharge lamp ballast 26. Since the ballast 26 cannot be provided,
Using these partition walls 14 as a guide, the discharge lamp ballast 26 can be housed in the ballast housing space 15 between them along the longitudinal direction thereof. In this way, the discharge lamp ballast 26 can be easily accommodated and arranged in the ballast accommodating space 15 in a predetermined posture without making a mistake in assembling.

By the fitting, the discharge lamp ballast 26 is moved from the predetermined installation position in the instrument body 12 in the manufacturing process.
Since it can be held so as not to move carelessly, it is possible to more reliably prevent the above-described damage to the electric wires 33a and 33b. In addition, the positioning also reliably prevents the terminal portion 29 of the discharge lamp ballast 26 from abnormally approaching or contacting the inner surface of the metallic instrument body 12. As a result, electrical insulation between the terminal portion 29 and the instrument body 12 can be ensured, so that no special measure for insulation of the terminal portion 29 can be omitted. Therefore, the cost can be reduced accordingly.

Furthermore, since the recess 17 is provided with two stepwise steps 17a and 17b at both ends in the longitudinal direction,
The stepped portions 17a, 17a at the same height among them are selected, and the laminated iron core 27 of a size corresponding to the distance is selected.
The discharge lamp ballast 26 having the above can be fitted and positioned (see FIG. 2), and instead, the step portions 17b and 17b at the lower position after the same height are selected to correspond to the distance between them. A small discharge lamp ballast (not shown) having a laminated core of a size can be fitted and positioned.

In this way, by selecting the step portions 17a and 17b, different types of discharge lamp ballasts according to the wattage of the lamp 22 can be reliably arranged at predetermined positions according to each.
The fixture body 12 can be commonly used for a plurality of types of discharge lamp ballasts, and cost reduction of lighting fixtures can be achieved even in such commonization.

In the luminaire having the above construction, the ballast housing space 1 is mounted on the bottom wall 12a of the luminaire main body 12.
The discharge lamp ballast 26 housed in No. 5 is the ballast housing space 1
It is embedded in a filler 30 which is solidified by pouring it in a liquid state and leaving it inside. Thereby, the discharge lamp ballast 26 is fixed and the moisture resistance thereof is enhanced. Then, the filler 30 is injected and filled only in the ballast housing space 15 formed by the pair of partition walls 14 and not between the entire lower part of the instrument body 12 to form the discharge lamp ballast 26. It is to be embedded, and the lunar space 31 shown in FIG. 3 may not be filled with the filler 30. Therefore, the amount of the filler 30 required for burying the discharge lamp ballast 26 can be reduced, so that the ceiling 1
There is an advantage that the weight of this type of device attached to the device 1 can be reduced, and the cost of the entire device can be reduced as the material cost of the filler 30 is reduced. In addition,
Although the string-shaped cavity 31 is not filled with the filler 30, the heat emitted from the discharge lamp ballast 26 toward the string-shaped cavity 31 passes through the partition wall 14 and the circle of the instrument main body 12 passes through the partition wall 14. Since the heat is transferred to the peripheral wall portion, the heat radiation performance from the discharge lamp ballast 26 does not deteriorate.

The present invention is not limited to the first embodiment. For example, as shown in FIG.
The number of steps 17a may be one. Since the second embodiment shown in FIG. 6 has the same configuration as the first embodiment shown in FIG. 1 except for the above points,
The same components are designated by the same reference numerals and the description thereof will be omitted. And also in this 2nd Embodiment, the 1st, 2nd subject can be solved by the effect | action demonstrated in the said 1st Embodiment.

Further, in the present invention, in order to solve only the first problem, the recess 17 provided in the first embodiment may be omitted.

[0047]

Since the present invention is carried out in the form as described above, it has the following effects.

According to the invention of claim 1, the electric wire is not sandwiched between the inner surface of the bottom wall of the instrument body and the laminated iron core of the discharge lamp ballast placed thereon, and the electric wire is Wires can be routed around the corners of the laminated core without contacting the corners, and the discharge lamp ballast can be installed in a stable condition to prevent inadvertent movement. It is possible to prevent this from happening, and by doing so, it is possible to omit a special measure for insulating the electric wire, so that the cost can be reduced accordingly.

According to the invention of claim 2 which depends on claim 1, in addition to being able to solve the first problem, the lower end of the laminated iron core is fitted into the recess formed in the inner surface of the bottom wall of the instrument body. The discharge lamp ballast is positioned so that it does not inadvertently move from the specified installation position in the fixture body during the manufacturing process, so the terminal part of the discharge lamp ballast is made of metal. There is no abnormal approach or contact with the appliance body, and thereby electrical insulation between the terminal portion and the appliance body can be secured, so that no special insulation measure for the terminal portion can be omitted, and therefore The cost can be reduced accordingly.

Further, according to the invention of claim 3 which depends on claims 1 and 2, in addition to being able to solve the first and second problems, at least one stepwise shape of both ends in the longitudinal direction of the recess is formed. Of the two steps, the steps located at the same height can be selected, and the discharge lamp ballast having a laminated iron core of a size corresponding to the distance can be fitted and positioned. By selecting, the different types of discharge lamp ballasts can be reliably arranged at the predetermined positions according to the respective types, and therefore the instrument body can be commonly used for a plurality of types of discharge lamp ballasts.

[Brief description of drawings]

FIG. 1 is a side view showing a configuration of an entire lighting fixture according to a first embodiment of the present invention.

FIG. 2 is a side view showing a partial cross-section of the configuration of the entire lighting fixture according to the first embodiment.

FIG. 3 is a transverse cross-sectional view of the entire luminaire shown along the line ZZ in FIG.

FIG. 4 is a plan view showing a configuration of a fixture main body included in the lighting fixture according to the first embodiment.

5 is a cross-sectional view of the instrument body taken along line YY in FIG.

FIG. 6 is a plan view showing a configuration of a fixture body included in a lighting fixture according to a second embodiment of the present invention.

FIG. 7 is a side view showing a partial cross-section of the configuration of the entire lighting fixture according to the conventional example.

8 is a cross-sectional view taken along line XX in FIG.

FIG. 9 is a plan view showing a configuration of a fixture body included in a lighting fixture according to a conventional example.

[Explanation of symbols]

 12 ... Instrument body, 12a ... Bottom wall of instrument body, 17 ... Recessed portion, 17a, 17b ... Step portion of recessed portion, 18 ... Electric wire passage hole, 19 ... Electric wire drawing groove, 20 ... Lamp holder, 22 ... Lamp, 26 ... Release Electric ballast, 27 ... laminated iron core, 28 ... coil, 29 ... terminal part of discharge lamp ballast 30 ... filler 33a, 33b ... electric wire.

Claims (3)

[Claims] 1. A lower part in the instrument body, which is formed of a tubular metal instrument body with a bottom, a lamp holder attached to the lower side of the body, a laminated core and a coil combined with the iron core. A discharge lamp ballast housed in the lamp, and a filler filled in the fixture body by burying the ballast in the appliance body, and a wire passage through which an electric wire connecting the discharge lamp ballast and the lamp holder passes. In a lighting fixture in which a hole is provided at a position where the bottom wall of the fixture body is covered with the discharge lamp ballast, a part of the projected area of the laminated iron core of the discharge lamp ballast onto the bottom wall is provided. And a part other than this part is formed in the projected area while the part other than this part is formed in the bottom wall, and the wire passing hole is communicated with this drawing groove, and part of the wire is routed to the wire. Wiring routed through the groove Lighting equipment characterized by the following. 2. A rectangular recess corresponding to the shape of the lower end surface of the laminated core is formed in the bottom wall of the instrument body, the wire passage hole is provided in the recess, and the recess extends inside and outside the recess. The lighting fixture according to claim 1, wherein a wire routing groove is provided, and the lower end of the laminated iron core is fitted in the recess. 3. The luminaire according to claim 2, wherein both end portions in the longitudinal direction of the recessed portion have at least one step portion and have a stepped shape.