JP2007035351A - Luminaire and lighting system with lifting and lowering device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminaire having a good balance in terms of weight and suppressed in temperature rise, and also to provide a lighting system with a lifting and lowering device which is smoothly lifted and lowered, and excelling in workability by improving a thermal problem. <P>SOLUTION: This luminaire 10 is composed of: a plurality of light sources 11; a plurality of ballasts 12 corresponding to the respective light sources 11 for lighting them; a ballast housing body 13 formed into a nearly cylindrical shape for positioning all the centers G of gravity of the plurality of ballasts 12 nearly at the cylinder center axis X-X; and a reflecting mirror 14 mounted at one end of the ballast housing body 13 for controlling the light of the plurality of light sources 11. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a lighting device installed on a ceiling or the like and a lighting device with a lifting device.

  This type of lighting device can produce a spot-like lighting effect as a downlight type lighting device, and the fixture itself is housed in the back of the ceiling, which is excellent in appearance and design. It is installed in various places such as offices and entrance halls and is becoming more popular.

  In particular, it is often installed in a high ceiling with a colonnade such as a multipurpose hall. In the case of a downlight type lighting device installed on a high ceiling, the lighting device with a lifting device from the standpoint of maintenance such as lamp replacement. Is frequently used (see, for example, Patent Document 1).

  In this lighting device with a lifting device, a ballast was installed on the lifting device side using a HID lamp as a conventional light source, and the lamp on the lighting fixture side was turned on. In addition, since ballasts have been miniaturized, a plurality of compact fluorescent lamps are used instead of conventional HID lamps as light sources, and ballasts equipped with lighting fixtures are installed. Yes.

FIG. 14 (a) shows a conventional lighting device with a multi-lamp type lifting device using three fluorescent lamps, which is embedded in a ceiling mounting hole 1 formed in a ceiling plate. A frame-shaped device main body 2, a lifting device 3, and a lighting device 4 that is lifted and lowered from the device main body 2 by the lifting device. The lighting device 4 includes three compact fluorescent lamps 5, a reflecting mirror 6, and a ballast 7. It consists of a ballast box 8 for storage.
JP 11-39928 A

  However, the lighting fixture 4 shown in FIG. 14 (a) has two ballasts 7 for controlling the lighting of the three compact fluorescent lamps 5, one ballast 7a and two lamp ballasts 7b. The ballast is composed of individual ballasts, and is housed separately in a rectangular tube-shaped ballast box 8 (see FIG. 14B). In addition, 9 is a wire which connects the raising / lowering apparatus 3 and the lighting fixture 4 in the figure.

  For this reason, since two ballasts of different sizes and weights are separated on the left and right, the center of gravity G of the ballast box is shifted to the side of the large and heavy ballast for two lamps. The lighting fixture is tilted when it is raised and lowered, and is caught on the inner surface of the ceiling mounting hole 1 or the apparatus main body 2, and the lighting fixture cannot be raised and lowered smoothly.

  Further, the ballast box has a rectangular tube shape, and each corner portion protrudes outward, and the protruding corner portion may be caught on the ceiling mounting hole 1 or the inner surface of the apparatus main body 2. There is also a problem that the lighting fixture cannot be raised and lowered smoothly.

  In addition, since the lighting fixture is equipped with a ballast box with a built-in ballast in the vertical direction, the overall height of the lighting fixture is increased, and it is necessary to attach it to a suspension bolt installed on a slab or the like on the back of the ceiling. Since the height of the instrument becomes high, there is a problem that it is difficult for the hand to reach the top plate of the instrument and the construction for fixing to the suspension bolt is difficult.

  These problems also occur in a downlight type lighting device that does not have a lifting device, that is, a lighting device that is manually lifted and installed on the back of the ceiling. The lighting fixture is easily caught on the ceiling mounting hole 1 and the inner surface of the fixture main body 2, and the same problem occurs that the installation work by hand cannot be performed smoothly. In addition, since the height of the instrument becomes high, it is difficult for the hand to reach the top plate of the instrument, resulting in a problem that the construction becomes difficult.

  On the other hand, in this type of multi-lamp type lighting fixture, since there are a plurality of lamps and a plurality of ballasts, a large amount of heat is generated from the lamps and ballasts. Whether to suppress is an important issue.

  The present invention aims to solve the above-described problems and problems, provides a lighting apparatus that is well balanced in weight and that suppresses temperature rise, and that can perform smooth elevation and thermal problems. An object of the present invention is to provide an illuminating device with a lifting device which is improved and has excellent workability.

  The invention of the lighting device according to claim 1 includes a plurality of light sources; a plurality of ballasts that respectively light the light sources; and a substantially cylindrical shape, and the center of gravity of all of the plurality of ballasts is approximately centered on the central axis A ballast housing body positioned; and a reflecting mirror provided at one end of the ballast housing body for controlling light from a plurality of light sources.

  According to the first aspect of the present invention, a luminaire having a good balance in weight is configured by substantially locating the center of gravity of all of the plurality of ballasts on the central axis of the cylinder.

  Furthermore, the lighting fixture of a form with few catches is comprised by comprising a ballast container in cylindrical shape.

  In the present invention, the plurality of light sources allow fluorescent lamps such as compact fluorescent lamps and bulb-type fluorescent lamps, high-pressure discharge lamps such as metal halide lamps and mercury lamps, and incandescent bulbs.

It is preferable that the plurality of ballasts that light the light sources correspondingly have the same specification, the same shape, and the same weight, but it is not a requirement that the specifications, the shape, and the weight are the same. The center of gravity of the plurality of different ballasts may be adjusted so as to be substantially positioned on the cylindrical central axis of the ballast housing.

The ballast container having a substantially cylindrical shape preferably has a bowl-shaped cylindrical box shape. However, the ballast container body may have a cylindrical frame structure and may form a cylinder. The means is not particularly limited.

The lighting fixture of the present invention may be a downlight type lighting fixture used in a lighting device with a lifting device, or may be a lighting fixture used in a lighting device that does not have a lifting device.

The invention according to claim 2 is the luminaire according to claim 1, wherein the ballast housing is
A plurality of ballasts are arranged at substantially equal intervals along the circumference so that the center of gravity is located substantially at the center axis of the cylinder, and the longitudinal direction of the ballast and the light source is stored substantially parallel to the center axis of the cylinder. And

  According to the second aspect of the present invention, a luminaire having a good balance in weight is configured by arranging a plurality of ballasts at substantially equal intervals along the circumference and substantially locating the center of gravity on the central axis of the cylinder.

  In addition, by storing the plurality of ballasts and the light source with the longitudinal direction thereof positioned substantially parallel to the central axis of the cylinder, a lighting device having a vertically long shape is formed.

  Arranging a plurality of ballasts at substantially equal intervals along the circumference in the ballast housing body is a means for positioning the center of gravity on the center axis of the cylinder, and that each interval dimension is configured to be exactly equal. Instead of the conditions, the distance dimensions may be different within a range in which the center of gravity is substantially located on the center axis of the cylinder. Further, even if the center of gravity is not accurately positioned on the center axis of the cylinder, it is only necessary that the center of gravity is approximately positioned on the center axis of the cylinder within the allowable balance.

According to a third aspect of the present invention, in the lighting device according to the first or second aspect, the ballast housing body is characterized in that a guide portion is formed by inclining a cylindrical outer edge portion.

  According to the third aspect of the present invention, the guide device is formed by inclining the outer periphery of the cylinder, so that a lighting fixture having a form with little catching is formed.

  The guide portion is preferably formed at the outer edge portion at the upper end and the outer edge portion at the lower end of the cylinder, but may be formed at either the upper end or the lower end.

According to a fourth aspect of the present invention, in the lighting fixture according to any one of the first to third aspects, the ballast housing body includes a plurality of heat shield plates interposed between the ballast and the light source. Features.

  According to invention of Claim 4, the lighting fixture which suppressed heat rise by making heat-shielding favorable is comprised by interposing a several heat-shielding board between the ballast and the light source.

  According to a fifth aspect of the present invention, in the lighting fixture according to any one of the first to fourth aspects, the ballast housing body has a plurality of lengths substantially along a circumferential direction corresponding to the ballast on an outer surface thereof. A first heat radiating hole made of a hole is formed, and a second heat radiating hole is formed in communication with the support portion of the light source.

  According to the invention of claim 5, the first heat radiating hole formed of a plurality of elongated holes substantially corresponding to the circumferential direction is formed corresponding to the ballast, and the second heat radiating hole is communicated with the support portion of the light source. As a result, the illuminating device is configured in such a manner that the heat dissipation characteristics are improved and the temperature rise is suppressed, and there is little catching.

  The plurality of long holes substantially along the circumferential direction may be a rectangular shape or a horizontally long substantially elliptical shape, and the shape of the long hole is not particularly limited. Further, the long hole does not need to be completely along the circumferential direction, and may be slightly inclined, as long as the hole has a good heat dissipation characteristic and little catching.

  The invention of the lighting device with a lifting device according to claim 6 includes: the lighting fixture according to any one of claims 1 to 5; a lifting device that lifts and lowers the lighting fixture; a device main body that houses the lighting fixture by the lifting device; An attachment member provided at a substantially middle portion of the outer surface of the apparatus main body, and the substantially intermediate portion of the apparatus body is supported by a suspension bolt by the attachment member.

  According to the invention of claim 6, it is possible to smoothly move up and down, improve the thermal problem, and support the substantially intermediate part of the instrument main body with the suspension bolt by the mounting member. An illuminating device with an elevating device excellent in performance is configured.

  According to the first aspect of the present invention, the ballast housing body is formed in a cylindrical shape, and the center of gravity of all of the plurality of ballasts is substantially located on the center axis of the cylinder. A lighting fixture suitable for a lighting device with a lifting device that performs smooth lifting and lowering can be provided.

  According to the second aspect of the present invention, it is possible to provide a lighting apparatus with a good balance in weight by arranging a plurality of ballasts at substantially equal intervals along the circumference and substantially locating the center of gravity on the central axis of the cylinder. it can.

  In addition, since the plurality of ballasts and the light source are housed in such a manner that the longitudinal directions of the ballasts and the light source are positioned substantially parallel to the central axis of the cylinder, it is possible to provide a lighting device having a vertically long shape with little catch.

  According to the third aspect of the present invention, since the guide portion is formed by inclining the cylindrical outer edge portion, it is possible to provide a lighting fixture having a form with little catch.

  According to the invention of claim 4, by providing a plurality of heat shield plates between the ballast and the light source, it is possible to provide a luminaire that can improve the heat shield and suppress the temperature rise, Provided is a lighting fixture suitable for a lighting device with a lifting device that improves a thermal problem.

  According to the invention of claim 5, the first heat radiating hole formed of a plurality of elongated holes substantially corresponding to the circumferential direction is formed corresponding to the ballast, and the second heat radiating hole is communicated with the support portion of the light source. Thus, it is possible to provide a luminaire having a shape with less heat catching while suppressing the temperature rise and improving the heat radiation characteristics.

  According to the invention of claim 6, it is possible to smoothly move up and down, improve the thermal problem, and support the substantially intermediate part of the instrument main body with the suspension bolt by the mounting member. It is possible to provide a lighting device with a lifting device that is excellent in performance.

  Hereinafter, embodiments of the lighting apparatus and the lighting device with the lifting device of the present invention will be described.

  First, the configuration of the lighting fixture will be described with reference to FIGS.

  Reference numeral 10 denotes a lighting fixture. Three ballasts 12 provided corresponding to the three light sources 11 and the three light sources, respectively, a ballast housing 13 for housing the three ballasts, and the ballast housing The reflecting mirror 14 is provided at the lower end.

  The three light sources 11 are configured by known compact fluorescent lamps having the same specifications, for example, a compact fluorescent lamp (hereinafter simply referred to as “lamp”) having a model name of FHT42EX-N, a light emission length of 150 mm, and a rated power of 42 W. .

  The three ballasts 12 are ballasts for one lamp each corresponding to the three lamps 11 and are composed of electronic ballasts including inverters for lighting and dimming the lamps. Have a long rectangular parallelepiped metal case 12a, the same circuit specifications, the same shape and the same weight.

The ballast housing 13 is provided in a cylindrical main body case 13a made of a metal such as iron, stainless steel, or aluminum, with an upper end and a lower end opened, and an upper lid 13b provided at the upper end opening and a lower end opening. A lower lid 13c is used.

  The upper lid 13b is made of a metal such as iron, stainless steel, or aluminum, and is fitted into the upper end open portion of the cylindrical main body case 13a and fixed with a screw or the like. Further, the outer edge portion is inclined and formed into a dish shape to form a guide portion 13d. Further, a support plate 13e is integrally attached to the upper surface, and openings 13f and 13f are formed on both sides of the support plate (FIG. 3). .

  The lower lid 13c is also made of a metal such as iron, stainless steel, or aluminum, and is fitted into the lower end opening of the cylindrical main body case 13a and fixed with a screw or the like. Further, the outer edge portion is inclined to form a dish shape to form a guide portion 13d, and the lower surface of the lower lid 13c forms an opening portion 13g.

  As a result, the ballast housing 13 has a cylindrical shape and is configured to have inclined guide portions 13d and 13d at the upper and lower ends of the cylinder.

  A first heat radiating hole 13h composed of a plurality of elongated holes substantially along the circumferential direction is formed on the outer surface of the main body case 13a, and a second heat radiating hole 13i is formed on the lower outer surface.

  As shown in FIG. 6, the first heat dissipating holes 13h made of long holes form eight rows of square holes having a width of about 30 mm and a length of about 7 mm. The vertical spacing a of each square hole is about 7 mm, and a total of 88 square holes are formed. The rear surface has the same configuration, and the first heat radiation hole 13h is formed by a total of 176 square holes.

  The shape, size, and arrangement of the first heat radiation holes 13h efficiently dissipate the heat of the ballast 12, and the heat radiation holes become protrusions when the lighting fixture is housed in the lighting device body by the lifting device. The size and arrangement were difficult to catch.

  The second heat radiation holes 13i formed on the lower outer surface form three rows of square holes having a width of about 60 mm and a length of about 40 mm. The distance dimension b between each second heat radiation hole 13i and the first square hole 13h located at the lowest level is about 8 mm. The rear surface has the same configuration, and the second heat radiation holes 13i are formed by a total of six square holes.

  The height c of the main body case 13a was about 228 mm, and the diameter d of the cylinder was about 195 mm.

  A second heat shield plate 13k is provided inside the ballast housing 13 having a cylindrical shape so as to be spaced from the first heat shield plate 13j and the first heat shield plate.

The first and second heat shield plates 13j and 13k are formed in a disk shape from a metal such as iron, stainless steel, or aluminum, and are screwed to a support column 13L that is also made of metal, and the two are spaced at a predetermined interval. It is comprised so that it may have.

The first and second heat shield plates 13j and 13k configured as described above have the first heat shield plate as the main body case 13.
a is located above the first heat radiating hole 13h located at the bottom of a, and the second heat shield plate is installed at a height located substantially in the middle of the second heat radiating hole 13i (FIG. 1), The bottom surface of the second heat shield plate is supported by screwing or the like on the inner surface of the lower lid body 13c via a support column.

Three support plates 13m are attached to the upper surface of the first heat shield plate 13j supported as described above. That is, the three support plates are formed of angled metal plates, arranged at equal intervals along the circumference of the cylindrical main body case 13a at every 120 degree angle, and the upper end of the upper cover body. 13
b is fixed to the inner surface of the upper end portion by screws or the like, and the lower end is fixed to the upper surface of the first heat shield plate 13j by screws or the like.

  Three ballasts 12 are attached one by one to the three support plates 13m supported as described above. That is, the metal case 12a made of a long rectangular parallelepiped is fixed vertically to the support plate 13m using screws or the like.

  Thereby, the three ballasts 12 are arranged in equilateral triangles at substantially equal intervals along the circumference in the cylindrical ballast housing 13 (FIG. 4), and each ballast 12 has the same shape and Since they have the same weight, by positioning the center of the equilateral triangle at the center of the ballast container 13, the center of gravity G of the ballast container 13 is placed on the cylindrical central axis XX of the ballast container. Since the center of gravity is not shifted from side to side, the cylindrical vertically long stabilizer housing 13 is in a well-balanced state.

  The three ballasts 12 are housed in a state in which the longitudinal direction thereof is positioned substantially parallel to the cylindrical center axis XX, and the ballast housing body 13 has a circumferential surface corresponding to the ballast 12 on its outer surface. It will be in the state in which the 1st heat radiating hole 13h which consists of a plurality of long holes along a direction is formed.

  As schematically shown in FIG. 2, the secondary side wiring of the ballast 12 is derived from the lower side of the metal case 12a, and the different polarity lines R1 and R2 are wired separately on the left and right sides of the case to be generated from the fluorescent lamp. In addition to suppressing an increase in electrical noise, the wiring distance to a lamp socket described later is shortened.

  Further, the primary side wiring of the ballast 12 is led out from above the metal case 12a, and is configured to shorten the electrical wiring distance with the lifting unit of the lifting device described later.

  The socket 11a of the lamp 11 is fixed to the lower surface of the second heat shield plate 13k having a disk shape at equal intervals along the circumference with an angle of 120 degrees by means such as screwing. The support part 15 is comprised. The socket 11a is a known socket for a compact fluorescent lamp.

  Thereby, the support part 15 of the lamp is positioned so as to face the second heat radiation hole 13i, and the second heat radiation hole 13i is formed in communication with the support part 15 (FIG. 1).

  A reflecting mirror 14 for controlling the light of the lamp 11 is attached to the opening 13g of the lower lid 13c located at the lower end of the ballast housing 13. The reflecting mirror 14 is made of a metal such as stainless steel or aluminum and is configured in a mortar shape so that a reflecting surface whose inner surface forms a paraboloid of revolution is formed, and the bottom surface faces the socket 11a and has three through holes. 14a is formed, and the three lamps 11 are configured to be detachably attached to the respective sockets 11a one by one through the through holes (FIG. 5).

  The reflecting mirror 14 is mounted with its axis line positioned on the cylindrical central axis XX of the ballast housing 13, and the three sockets 11a and the lamps 11 are arranged in equilateral triangles at substantially equal intervals to be balanced. Install in condition.

  Thereby, together with the ballast housing 13 configured in a well-balanced manner, the center of gravity G of the entire lighting fixture 10 including the reflecting mirror 14 and the lamp 11 is substantially positioned on the cylindrical central axis XX of the ballast housing 13, A well-balanced configuration.

Further, the longitudinal direction of the three ballasts 12 and the three lamps 11 are accommodated so as to be positioned substantially parallel to the cylindrical center axis XX, and a vertically long lighting fixture 10 that is not bulky in the radial direction is configured.

  Next, the structure of the illuminating device which incorporates the lighting fixture comprised above is demonstrated according to FIGS.

  Reference numeral 20 denotes a lighting device, which is composed of a device main body 21 and a lifting device 22 for housing the lighting fixture 10 in the device main body.

  The apparatus body 21 includes a ring-shaped substantially disk-shaped top plate 21a, a lower frame 21b having an opening and a circular ring shape, a middle frame 21c positioned approximately in the middle of the top plate and the lower frame, and A pair of two columns 21d and 21d for connecting the top plate, the lower frame, and the middle frame by means such as screws are configured to form a cylindrical frame having a wide open portion as a whole.

  The top plate 21a, the middle frame 21c, and the columns 21d and 21d constituting the apparatus main body 21 are made of metal such as iron, stainless steel, or aluminum.

  The lower frame 21b is a frame that constitutes the apparatus main body 21, and is configured in a ring shape with an L-shaped longitudinal section. When the lower frame 21b is installed on the ceiling 30 described later, the L-shaped lower surface portion is attached to the ceiling. It is configured to match the cut end portion of the hole 30a, and covers and hides the opening edge portion of the ceiling mounting hole that is opened in a jagged manner, thereby serving as a decorative frame that improves the appearance and design.

  The elevating device 22 is attached to the upper surface of the top plate 21a, and the elevating part 22a is installed on the lower surface of the elevating device so that it can be taken in and out. The elevating part 22a is moved up and down by winding and unwinding the two wire ropes 22b and 22b by forward and reverse rotation of a built-in motor.

  When the lighting device 20 is installed on the ceiling, the lifting plate 22a is connected to the support plate 13e of the ballast housing 13 of the lighting device 10, and the entire lighting device together with the lifting unit 22a by the winding operation of the wire ropes 22b and 22b. The lighting fixture 10 is configured to be housed in the apparatus main body 21 that forms a cylindrical frame.

  Furthermore, the middle frame 21c located in the middle is provided with a pair of attachment members 21e made of the same metal as the middle frame so as to oppose each other in the diameter direction.

  The attachment member 21e has an attachment piece 21g formed with a support hole 21f for fixing the apparatus main body 21 to a suspension bolt fixed to a ceiling slab or the like, and the attachment piece is rotated at one end by a shaft 21h on an intermediate frame 21c. The shaft is supported so as to be rotatable about an angle range of about 90 degrees from the horizontal to the vertical along the middle frame 21c around the shaft 21h. The support hole 21f is a long hole with one end open (FIG. 13).

  Note that the attachment piece 21g is held in a horizontal state by a stopper piece 21i formed integrally with the attachment piece and a lock mechanism 21j by the engaging action of the convex portion of the middle frame 21c and the concave portion of the attachment piece 21g.

  In the figure, reference numeral 21k denotes a support piece composed of a leaf spring that protrudes outwardly from the lower end portion of each column 21d, and is used to sandwich and hold the ceiling plate with the lower frame 21c. By moving up and down along the long hole 21L formed in the column 21d, the position protruding outward from the column can be adjusted according to the thickness of the ceiling plate.

  Although not shown, the power line is pre-wired to the lifting device 22, and the lighting fixture 10 is stored and installed in the device main body 21, so that the socket 11a of the lighting fixture 10 is powered via the lifting portion 22a. Connected to the line, power is supplied to each lamp 11.

  As described above, the lighting device 20 with the lifting device in which the lighting fixture 10 is housed in the device body 21 is configured.

  The illuminating device with the lifting and lowering device configured as described above has a height h1 of the device main body, that is, a height from the lower end of the lower frame 21b to the upper surface of the lifting and lowering device 22 is about 629 mm, and the ballast housing in the lighting fixture 10 The height dimension h2 of the body 13, that is, the height dimension from the lower surface of the lower lid body 13c to the upper surface of the upper lid body 13b is about 271 mm, and the diameter d of the ballast housing body 13 is about 195 mm. Configure (FIG. 12).

  Next, a construction procedure for installing the lighting device with the lifting device configured as described above on the ceiling will be described with reference to FIGS.

  A pair of two suspension bolts 40 are previously installed and suspended on a slab or the like on the back of the ceiling with a predetermined distance.

  Further, a circular ceiling mounting hole 30 a for embedding and installing the lighting device 20 in the ceiling 30 is formed.

  The diameter of the ceiling mounting hole 30a is set so that the L-shaped portion of the lower frame 21b of the apparatus main body 21 matches the cut end.

  First, the attachment piece 21g of the attachment member 21e attached to the middle frame 21c is rotated to a vertical state along the middle frame so that the attachment piece 21g does not protrude outward from the side surface of the apparatus main body 21 ( FIG. 9).

  If the mounting piece 21g is left in a horizontal state, the mounting piece protrudes outward from the side surface of the apparatus main body 21 and is caught in the ceiling mounting hole 30a, so that the apparatus main body 21 has a dimensional relationship in which the ceiling mounting hole 30a cannot be inserted. Has been.

  Next, the apparatus main body 21 is inserted into the ceiling mounting hole 30a from below, and the lower frame 21b is matched with the cut portion of the ceiling mounting hole 30a (FIG. 10).

  At this time, each support piece 21k at the lower end of the column 21d is bent and returned by the elastic force of the spring, so that the ceiling plate is sandwiched and held between the lower frame 21c.

  In this state, the attachment piece 21g of the attachment member 21e is rotated upward about the shaft 21h to be in a horizontal state. At this time, the attachment piece 21g is held in a horizontal state by the stopper piece 21i and the locking mechanism 21j by the unevenness.

  Next, the ends of the pair of two suspension bolts 40 supported by the slab are inserted into the support holes 21f of the attachment pieces 21g, and nuts 41 provided at the top and bottom are screwed. Thereby, the intermediate part of the apparatus main body 21 is fixed in the state suspended by the suspension bolt 40 (FIG. 10).

  At this time, if the suspension bolt 40 and the ceiling mounting hole 30a are slightly misaligned, the apparatus main body 21 is moved and adjusted in the horizontal direction within the range of the long dimension of the long hole of the support hole 21f and supported (see FIG. 13 (a)).

As a result, the apparatus main body 21 is not forcibly supported and fixed to the suspension bolt 40 that is positioned out of position, and the apparatus main body 21 that forms the cylindrical frame is installed without deformation. In addition, no gap is formed between the lower frame 21b serving as a decorative frame of the appliance body 21 and the ceiling surface.

  In the lighting device of this embodiment, in order to accommodate the vertically long lighting fixture 10 in which the ballast 12 is installed on the lighting fixture 10 side, the height of the device main body 21 is high, and the suspension bolt 40 is connected. As shown in the conventional patent document 1, in the case of a method of connecting with the top plate or the like of the apparatus main body 21, it is difficult for the operator's hand to reach the top plate and the construction becomes difficult.

  However, in this embodiment, since the attachment member 21e is provided not in the top plate of the apparatus main body 21 but in the middle part of the column 21d, the connection work with the suspension bolt 40 can be performed at a relatively low position. Construction becomes easy.

  Next, as shown in FIG. 11, the wire rope 22 b of the elevating device 22 is unwound and fed out to lower the elevating part 22 a onto the floor surface 42.

  A connecting rod 43 is connected to the bottom of the lifted and lowered part 22a and the support plate 13e of the lighting fixture 10 prepared on the floor in advance by fastening with two nuts 45 via a spring 44 from above and below. The instrument 10 and the elevating part 22a are integrated. At this time, electrical wiring is performed between the input terminal portion of the lighting fixture 10 and the contact terminal portion of the elevating unit 22a.

  Next, the wire rope 22b of the lifting / lowering device 22 is wound up, the entire lighting fixture 10 is lifted together with the lifting / lowering portion 22a, and the lighting fixture is housed in the device main body 21 forming a cylindrical frame (FIG. 12).

  At this time, the entire lighting fixture 10 including the reflecting mirror 14 and the lamp 11 together with the well-balanced ballast housing 13 is in a well-balanced state, and the lighting fixture 10 tilts or rolls when moving up and down. The lighting fixture 10 does not collide with the inner surface of the apparatus main body 21 or the fitting between the elevating part 22a and the elevating apparatus 22 at the time of ascent does not become bad. Thus, the mechanical lock and electrical connection can be reliably performed, and the lighting device can be stored and installed smoothly and reliably in the apparatus main body.

Further, the ballast housing 13 has a cylindrical shape and is formed with the inclined guide portions 13d and 13d located at the outer edges of the upper and lower ends of the cylinder. Even if 10 and the inner surface of the apparatus main body 21 come into contact with each other, they can be raised and lowered smoothly without being caught.

  Moreover, since the apparatus main body 21 is not deformed as described above, the luminaire 10 is smoothly accommodated in the apparatus main body 21, and as shown in FIG. There is no case where the reflecting mirror 14 or the like of the lighting fixture 10 is fitted and cannot be moved up and down.

  In addition, a large number of first heat radiation holes 13h are formed on the outer surface of the luminaire 10, and protrusions on the inner surface of the apparatus main body 21, for example, parts constituting the mounting member 21e come into contact with each other, making the operation difficult. There is a risk of damage to the instrument. In particular, it tends to occur when the lighting fixture 10 rolls due to wind, vibration, etc. Further, when the heat radiation hole 13h is a vertically long square hole, the vertically long hole serves as a guide. It becomes easy to get caught.

  However, since the heat radiation hole 13h of the present embodiment is configured by a horizontally long square hole, the hole is difficult to serve as a guide for the protrusion. For this reason, a possibility that the outer surface of the illuminating device 10 will be caught by a protrusion reduces.

When the elevating unit 22a is mechanically locked to the elevating device 22, the contact terminal portion of the elevating unit 22a is electrically connected to the terminal unit of the elevating device 22, and a power line and a lighting fixture that are pre-wired to the elevating device 22 Ten sockets 11a are connected, and power is supplied to each lamp 11.

  As described above, the lighting device 20 with the lifting device is configured so that the reflecting mirror 14 and the lamp 11 are directed downward to illuminate the lower floor surface, and the construction is completed.

  In the lighting device with lifting device installed as described above, when performing lamp replacement, repairing or checking the lighting fixture, press the “Descent” button on the lifting switch installed separately on the wall, etc. Then, the elevating device 22 is driven to unwind the wire rope 22b, the unwinding lighting fixture 10 is lowered to the floor surface 42, and the lamp is exchanged.

  Next, when the lighting device with a lifting device installed on the ceiling as described above is turned on, the lighting control circuit is activated, the temperature of the circuit components rises, and the temperature of the three ballasts 12 rises. At the same time, the three lamps 11 are turned on and the lamp temperature rises.

  However, a plurality of first heat radiating holes 13h consisting of a plurality of long holes along the circumferential direction corresponding to the ballast 12 are formed in the vertical direction so as to cover the entire height dimension of the ballast 12 which is vertically long. Therefore, the heat generated from the ballast 12 rises due to convection and is radiated to the outside from the multiple first heat radiation holes 13h. Further, heat is radiated from the opening 13f of the upper lid 13b located above.

  At the same time, the heat trapped in the lower part of the ballast 12 is shielded twice by the first and second heat shield plates 13j and 13k, thereby preventing thermal influence on the lower lamp and the like.

  On the other hand, the heat of each lamp 11 flows upward by convection, reaches the lamp support part 15 provided with the socket 11a, and is radiated to the outside from the large second heat radiation hole 13i formed in communication with the support part. The

  Further, the lamp support portion 15 is provided with a second heat shield plate 13k, and further, a first heat shield plate 13j is provided above the second heat shield plate 13k. Is blocked by. The second heat shield plate 13k close to the lamp 11 is located approximately in the middle of the square hole of the second heat radiation hole 13i and faces outward, so that it is cooled by outside air.

Thereby, the temperature rise of a lamp | ramp is suppressed, and also 1st, 2nd heat shield plate 13j, 13k
Thus, upward heat transfer is suppressed, and it is possible to prevent the ballast 12 from being thermally affected.

As described above, even in a multi-lamp type lighting device having a large number of lamps and ballasts, it is possible to efficiently release the heat inside the fixture and to reduce the temperature of the ballasts themselves, and at the same time, the temperature of the lamps also rises. Can be suppressed.

  In this embodiment, although applied to the illuminating device with a raising / lowering device, you may apply to the normal downlight type illuminating device which does not have a raising / lowering device.

  In an illuminating device that does not have an elevating device, the luminaire 10 is lifted manually, and stored and installed in the apparatus main body 21 installed on the ceiling.

  Also in this case, the entire lighting fixture is in a well-balanced state, and the lighting fixture does not inadvertently tilt when lifted by hand, so that the construction is easy.

In addition, since the inclined guide portions 13d and 13d are formed in the ballast housing 13, when the lighting fixture 10 is lifted and stored in the device main body 21, even if the lighting fixture contacts the device main body, it is caught. Even in an illuminating device that does not have an elevating device, such as being able to be stored smoothly without any problems, the same effects as the illuminating device with the elevating device can be achieved.

According to the present embodiment, the three ballasts 12 are arranged at substantially equal intervals along the circumference, and the center of gravity G is positioned on the substantially cylindrical center axis XX of the ballast housing 13 so that the balance is good. The lighting fixture 10 as a whole, including the reflector 14 and the lamp 11, is in a well-balanced state, and the lighting fixture is not tilted or swayed when moving up and down. The lighting fixture 10 is smoothly and reliably accommodated in the apparatus main body 21.

Since the ballast housing 13 is formed in a cylindrical shape, it is not a rectangular tube as shown in FIG.

Since the inclined guide portions 13d and 13d are formed at the outer edge of the upper and lower ends of the ballast housing 13, the lighting fixture 10 is not caught even if the lighting fixture comes into contact with the apparatus main body when the lighting fixture 10 is raised or lowered. It can be raised and lowered smoothly.

  Since the first heat radiating hole 13h formed on the outer surface of the ballast housing body 13 is a horizontally long square hole, it is difficult for a projecting object to be caught in the hole, and the lifting and lowering can be performed more smoothly.

  Since a large number of elongated holes along the circumferential direction are formed corresponding to the ballast 12, heat generated from the ballast can be efficiently radiated to the outside.

  The heat of the ballast 12 is doubly shielded by the first and second heat shield plates 13j and 13k, and is prevented from exerting a thermal influence on the lamps below.

  The heat of each lamp 11 is efficiently radiated to the outside through a large second heat radiating hole 13 i formed in communication with the lamp support 15.

  The lamp support portion 15 is provided with a second heat shield plate 13k, and a first heat shield plate 13j is provided above the second heat shield plate 13k, so that the upward heat is blocked by the double heat shield plate. Is done.

Since the second heat shield plate 13k faces outward from the second heat radiation hole 13i, it is cooled by the outside air.

  Since the secondary side wiring of the ballast 12 is led out from the lower side of the metal case 12a and the different polar lines R1 and R2 are separately wired on the left and right sides of the case, an increase in electrical noise can be suppressed.

  In the present embodiment, the attachment member 13e is provided not in the top plate of the apparatus main body 21 but in the middle portion of the column 21d, so that the connection work with the suspension bolt 40 can be performed at a relatively low position. It becomes easy.

  Since the support hole 13f of the mounting member 13e is a long hole, even if the suspension bolt 40 and the ceiling mounting hole 30a are slightly deviated, they can be adjusted and supported within the range of the long dimension of the long hole. The main body 21 is installed without being deformed.

  Further, no gap is formed between the lower frame 21b serving as a decorative frame of the apparatus main body 21 and the ceiling surface, so that the appearance of the lighting apparatus does not deteriorate.

The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above-described embodiment, and various design changes can be made without departing from the scope of the present invention.

The front view of the lighting fixture in embodiment of this invention. The front view of the lighting fixture which deletes the main body case of a ballast container similarly, and cuts and shows a part. Similarly the top view of a lighting fixture. Sectional drawing which follows the AA line of FIG. Similarly the bottom view of a lighting fixture. The front view of the main body case of a ballast container similarly. The front view of the apparatus main body of the illuminating device in embodiment of this invention. The side view of the apparatus main body of an illuminating device. Explanatory drawing which similarly shows the state which installs the apparatus main body of an illuminating device on a ceiling. Explanatory drawing which similarly shows the state which installed the apparatus main body of the illuminating device on the ceiling. Similarly, it is explanatory drawing which shows the state which installs a lighting fixture in an apparatus main body, (a) is a figure which shows the state which lowered the raising / lowering part and was connected with the lighting fixture, (b) is a figure which expands and shows the B section of (a) . The front view of the illuminating device in embodiment of this invention. Similarly, it shows the mounting member of the apparatus main body in the lighting device, (a) is a side view showing a state where the mounting piece is horizontal, partly cut away, (b) shows a state where the mounting piece is vertical. Side view. The conventional illuminating device is shown, (a) is a perspective view which shows the state installed in the ceiling, (b) is a cross-sectional view of a ballast box.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Lighting fixture 11 Light source 12 Ballast 13 Ballast container 14 Reflector G Center of gravity XX Cylindrical center axis

Claims (6)

With multiple light sources;
A plurality of ballasts each correspondingly illuminating;
A ballast housing body having a substantially cylindrical shape and having the center of gravity of all of the plurality of ballasts substantially positioned on the central axis of the cylinder;
A reflector provided at one end of the ballast housing for controlling the light of the plurality of light sources;
The lighting fixture characterized by comprising. The ballast housing body has a plurality of ballasts arranged at substantially equal intervals along the circumference so that the center of gravity is substantially located on the cylindrical central axis, and the longitudinal direction of the ballast and the light source is substantially parallel to the cylindrical central axis. The lighting fixture according to claim 1, wherein the lighting fixture is stored. The lighting device according to claim 1, wherein the ballast housing body has a guide portion formed by inclining a cylindrical outer edge portion. The lighting device according to any one of claims 1 to 3, wherein the ballast housing body includes a plurality of heat shield plates interposed between the ballast and the light source. The ballast housing body has a first heat radiating hole formed of a plurality of long holes substantially along the circumferential direction corresponding to the ballast on the outer surface thereof, and communicates with a support portion of the light source to form a second heat sink. The luminaire according to any one of claims 1 to 4, wherein a heat radiating hole is formed. A lighting fixture according to any one of claims 1 to 5;
A lifting device for lifting and lowering the lighting fixture;
A device main body for storing the lighting fixture by the lifting device;
An attachment member provided at a substantially middle portion of the outer surface of the apparatus main body;
A lighting device with a lifting device, characterized in that a substantially intermediate portion of the device main body is supported by a suspension bolt with a mounting member.

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