JP2008300042A - Discharge lamp lighting device, and lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a discharge lamp lighting device with designing versatility at a circuit board improved without the need of a new case, as well as a lighting fixture equipped with the discharge lamp lighting device. <P>SOLUTION: The discharge lamp lighting device 1 is provided with a bottom plate part 6, a pair of erected parts 7, 7 fitted at either side of the bottom plate part 6, and a plurality of locking pawls 8a, 8b fitted to the erected parts 7, 7 at a given interval as well as a plurality of locking holes 9a, 9b located further at a non-bottom plate part side than the locking pawls 8a, 8b. It is also provided with a case bottom plate 3 supporting one of the faces 2a of the circuit board 2 as each locking pawl 8a, 8b of the same distance from a bottom face 6a of the bottom plate part 6 is folded, and a case lid body 4 locked to the locking holes 9a, 9b as locking pieces 13, 14, 15 of a pair of side plate parts 11, 11 are folded so as to come in close contact with the other face 2b of the circuit board 2. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

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

  2. Description of the Related Art Some discharge lamp lighting devices that illuminate a fluorescent lamp at a high frequency include a lighting circuit component mounted on a circuit board and the circuit board housed in a case made up of a bottom plate and a cover. The circuit board is fixed to the support member of the bottom plate, and the bottom plate and the cover are some which are coupled by locking the locking claws in the locking holes. For example, a storage case has been proposed in which a circuit board is fixed to a support portion of a bottom plate together with both end plates by a fastening member (screw), and an engagement hole of a cover is engaged with a locking claw portion of the end plate (Patent Document 1). reference.).

In addition, the discharge lamp lighting device in which the circuit board is supported by the pair of end members and accommodated in the base case, and the respective locking claws of the cover case are hooked into the respective locking holes of the base case so that the cover case and the base case are coupled. Has been proposed (see Patent Document 2).
Japanese Patent Laid-Open No. 7-45964 (page 3, FIG. 1) Japanese Patent Laying-Open No. 2005-259893 (page 5, FIG. 2)

  In the storage case of Patent Document 1 and the discharge lamp lighting device of Patent Document 2, since the relative positions of the circuit board fixed to the bottom plate of the case and the bottom plate of the case and the cover are fixed, arrangement of circuit components on the circuit board It cannot be used when the height dimension increases due to changes in the parts used, and the versatility of the case is low. For this reason, there is a problem that it is necessary to design and manufacture the bottom plate and cover of the case each time according to the occupied space of the mounted circuit components. For example, because the gap between the bottom of the bottom plate and the circuit board is small, chip parts cannot be mounted on the bottom surface of the circuit board, and it takes time to design, and height is required to mount tall discrete parts. May require a larger cover.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a discharge lamp lighting device that improves design freedom on a circuit board without requiring a new case, and a lighting fixture including the discharge lamp lighting device.

  The invention of the lighting device for a discharge lamp according to claim 1 includes: a circuit board on which lighting circuit components are mounted; a rectangular bottom plate portion, and a plane opposite to each other along the longitudinal direction of the bottom plate portion. A pair of raised portions, a plurality of locking claws provided on the pair of raised portions along the longitudinal direction and at a predetermined interval in a direction perpendicular to the longitudinal direction, and the locking There are a plurality of locking holes provided for each locking claw corresponding to the distance between the locking claws so as to be positioned on the non-bottom plate side of the claw, and each engagement at the same distance from the bottom surface of the bottom plate portion. A case bottom plate in which a pawl is bent inside a pair of upright portions, and supports the one surface of the circuit board with the engaging claws; a pair of side plate portions so as to cover the pair of upright portions of the case bottom plate, and the side plate portions A top plate that extends over the A locking piece is provided along the longitudinal direction and corresponding to the locking hole, and the locking piece is bent toward the locking hole so as to be close to the other surface of the circuit board. And a case lid locked in the locking hole.

  In the present invention and each of the following inventions, each configuration is as follows unless otherwise specified.

  From the point of supporting one surface of the circuit board, it is preferable that a plurality of locking claws are provided at least on both ends in the longitudinal direction of the upright portion. Further, the locking claws are provided so that the distance from the bottom surface of the bottom plate portion is sequentially increased, and when there are three or more, the predetermined interval between the adjacent locking claws may be the same or different. It may be. Moreover, although it is suitable for the latching claw to be arranged in parallel on the same straight line in the direction orthogonal to the longitudinal direction of the upright portion, it may be provided obliquely with respect to the longitudinal direction.

  The locking hole is not particularly limited in size and shape as long as the locking piece of the case lid is inserted by bending and hooks the locking piece. In addition, “provided for each locking claw corresponding to a predetermined interval of the locking claw” means that the locking hole and the locking claw have a lower end edge of the locking hole than the upper edge of the locking claw. It means that they are provided so as to be located away from the bottom surface of the bottom plate portion by the thickness of the substrate.

  The gap where the locking piece is close to the other surface of the circuit board is formed at least between the lower end edge of the locking hole where the locking piece is locked and the lower edge of the locking piece.

  According to the present invention, among the plurality of locking claws of the case bottom plate, the locking claw of the same distance from the bottom surface of the bottom plate portion is bent inside the pair of uprights, and the circuit board is placed on the pair of uprights. After covering the case lid, fold the locking piece of the case lid to the side of the locking hole corresponding to the bent locking claw so that the circuit board is sandwiched between the locking claw and the locking piece. The case bottom plate and the case lid are combined with each other and accommodated in the bottom plate. And, according to the height dimension of one surface side of the circuit board or according to the interference between the lighting circuit component and the bottom surface of the bottom plate part, the insulation distance, etc., the locking claw of the same distance from the bottom plate part is selected And folded.

  The discharge lamp lighting device according to claim 2 is the discharge lamp lighting device according to claim 1, wherein a plurality of locking pieces of the case lid are provided in a direction orthogonal to the longitudinal direction of the side plate portion. It is characterized by being.

  The interval between the adjacent locking pieces is arbitrarily set regardless of the interval between the locking claw and the locking hole.

  According to the present invention, the locking piece to be bent is selected according to the height of the lighting circuit component mounted on the other surface of the circuit board. Each of the selected locking pieces is bent toward the locking hole side of the case lid corresponding to the bent locking claw, and is locked to the locking hole in the vicinity of the other surface of the circuit board. As a result, the top plate portion of the case lid and the lighting circuit component are separated without interference, and the case bottom plate and the case lid are coupled.

  The invention for a discharge lamp lighting device according to claim 3 is the discharge lamp lighting device according to claim 1 or 2, wherein the bottom plate portion of the case bottom plate is provided with a circuit board on each side of the longitudinal direction. A cut-and-raised piece for restricting movement in the longitudinal direction is provided.

  The cut-and-raised piece is formed at a height that restricts the movement of the circuit board even if the locking piece having the largest distance from the bottom surface of the bottom plate portion is bent toward the locking hole.

  According to the present invention, when the circuit board moves in the longitudinal direction, the circuit board comes into contact with the cut and raised pieces, the movement in the longitudinal direction is restricted, and the circuit board is held in the case bottom plate.

  According to a fourth aspect of the present invention, there is provided a lighting device for a discharge lamp according to any one of the first to third aspects; a discharge lamp that is lit by the lighting device for the discharge lamp; and a discharge lamp. And an appliance main body.

  According to this invention, the lighting fixture which comprises the lighting device for discharge lamps as described in any one of Claim 1 thru | or 3 is provided.

  According to the first aspect of the present invention, the height of the circuit board relative to the case bottom plate can be adjusted by selecting the locking claws to be bent, so that the degree of freedom in design such as selection of chip components to be mounted on one surface of the circuit board is improved. Thus, the lighting circuit can be easily designed, and it is not necessary to use a new case bottom plate, so that the cost can be reduced.

  According to the second aspect of the present invention, the height of the case lid relative to the circuit board can be adjusted by selecting the locking pieces to be bent, so that the selection and arrangement of tall discrete components to be mounted on the other surface of the circuit board, etc. Thus, the lighting circuit can be easily designed, and it is not necessary to use a new case lid, thereby reducing the cost.

  According to the invention of claim 3, while the vertical movement of the circuit board is regulated by the locking claw of the case bottom plate and the locking piece of the case lid, the movement of the circuit board in the longitudinal direction is caused. Since the regulation is performed by one piece, the circuit board can be stored in the case bottom plate with a simple and inexpensive configuration.

  According to invention of Claim 4, the lighting fixture which comprises the lighting device for discharge lamps as described in any one of Claim 1 thru | or 3 can be provided.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. First, a first embodiment of the present invention will be described.

  1A and 1B show a discharge lamp lighting device according to a first embodiment of the present invention, in which FIG. 1A is a schematic longitudinal sectional view, FIG. 1B is a schematic sectional view in the AA direction of FIG. FIG. 2 is an exploded schematic side view of the discharge lamp lighting device.

  In FIG. 2, the discharge lamp lighting device 1 includes a circuit board 2, a case bottom plate 3, and a case lid 4.

  The circuit board 2 is made of, for example, a rectangular glass epoxy material or paper phenol material, and is mounted with a lighting circuit component 5 of a high-frequency lighting circuit for lighting a discharge lamp. That is, the transistors Tr1 and Tr2 which are chip parts are mounted on one surface (lower surface) 2a, and the capacitor C1, which is a discrete component, the short capacitor C2, resistors R1 to R3, and the diode D1 are mounted on the other surface (upper surface) 2b. A transformer T1, an IC element IC1, an inductor (not shown), and the like are mounted. The high-frequency lighting circuit is formed of a known circuit for lighting a discharge lamp at high frequency. The board thickness of the circuit board 2 is 2.0 mm, for example.

  The case bottom plate 3 is made of metal, for example, aluminum (Al). As shown in FIG. 1A, the case bottom plate 3 has a rectangular length formed by bending a single flat plate into the bottom plate portion 6 and the pair of upright portions 7 and 7. It is a scale frame. That is, the bottom plate portion 6 is formed in a rectangular shape, and the pair of upright portions 7 and 7 are bent at a right angle with respect to the bottom plate portion 6 so that the respective planes are opposed to both sides along the longitudinal direction of the bottom plate portion 6. Is provided.

  As shown in FIG. 2, the pair of upright portions 7 and 7 are provided with a plurality of locking claws 8 a and 8 b and a plurality of locking holes 9 a and 9 b on both end portions 3 a and 3 b. . The locking claws 8 a and 8 b are formed by punching, and are formed so that the longitudinal sides of the raised portions 7 are along the longitudinal direction of the raised portions 7 and the distal ends of the raised claws 8 are directed to one end side and the other end side of the raised portions 7. Moreover, it forms on the same straight line of the direction orthogonal to the longitudinal direction of the upright part 7 with a predetermined space | interval, for example, 2-5 mm.

  The locking claws 8a and 8b are bent at the same distance from the bottom surface 6a of the bottom plate portion 6, and support one surface (lower surface) 2a of the circuit board 2 with the bent locking claws 8a and 8b. is there. In FIG. 1, since the transistors Tr1 and Tr2 are mounted on the lower surface 2a of the circuit board 2, of the locking claws 8a and 8b, the locking claw 8b farthest from the bottom plate portion 6 is bent. Yes. Thus, the locking claws 8a and 8b to be bent are selected in accordance with the height dimension on the one surface 2a side of the circuit board 2, the interference between the lighting circuit component 5 and the bottom surface 6a of the bottom plate 6 and the insulation distance. Thus, the height adjustment of the circuit board 2 with respect to the case bottom plate 3 can be performed.

  As shown in FIG. 2, the locking holes 9a and 9b are provided for the respective locking claws 8a and 8b, and are formed by punching into a small rectangular shape into which the locking claws 8a and 8b are inserted and locked. Has been. That is, the position of the locking claws 8a, 8b on the same straight line in the direction perpendicular to the longitudinal direction of the upright portion 7 is a position farther from the bottom plate portion 6 than the locking claws 8a, 8b (position on the non-bottom plate portion side). It is formed so as to have the same interval as a predetermined interval of 8b (for example, 2 to 5 mm). The interval between the locking claw 8a (8b) and the locking hole 9a (9b) in the direction perpendicular to the longitudinal direction is such that the lower end edge of the locking hole 9a (9b) is the upper edge of the locking claw 8a (8b), for example. It is provided at a position farther away from the non-bottom plate portion by the thickness of the circuit board 2 (for example, 2.0 mm).

  Locking pieces 13, 14, and 15, which will be described later, of the case lid 4 are inserted into the locking holes 9 a and 9 b and hooked. As a result, the case bottom plate 3 and the case lid 4 are coupled, and the circuit board 2 is accommodated therein.

  Further, as shown in FIG. 1B, the bottom plate portion 6 is provided with cut pieces 10 and 10 at both end portions 6a and 6b in the longitudinal direction, respectively. The cut and raised pieces 10 and 10 are cut and raised in a rectangular shape on the inner side of the rectangular case bottom plate 3 from the bottom surface 6a on the back side toward the one end side and the other end side of the bottom plate portion 6, respectively. The cut-and-raised pieces 10 and 10 are formed in such a size that the respective distal end portions are separated from the bottom plate portion 6 rather than the locking holes 9b that are most separated from the bottom plate portion 6. The cut-and-raised pieces 10 and 10 are in contact with each other when the circuit board 2 supported by the locking claws 8a and 8b moves in the longitudinal direction, thereby restricting the movement.

  The case lid 4 is made of metal, for example, aluminum (Al), and as shown in FIG. 1A, a single rectangular flat plate is bent to form a pair of side plate portions 11 and 11 and the side plate portions 11 and 11. It is formed in the elongate frame which has the top-plate part 12 ranging over. The case lid 4 is attached to the case bottom plate 3 so as to cover the pair of upright portions 7 and 7 of the case bottom plate 3. As shown in FIG. 2, the pair of side plate portions 11, 11 is provided with a plurality of locking pieces 13, 14, 15 that make a pair.

  The locking pieces 13, 14, 15 are sized so as to be inserted into the locking holes 9 a, 9 b, and are formed along the longitudinal direction of the side plate portion 11 and at portions corresponding to the locking holes 9 a, 9 b. Any of the locking pieces 13, 14, 15 is bent to any locking hole 9 a, 9 b side and locked to the locking holes 9 a, 9 b. That is, the locking pieces 13, 14, 15 are side plate portions 11 that are positions that can face the locking holes 9 a, 9 b when the case lid 4 is put on the pair of upright portions 7, 7 of the case bottom plate 3. Provided on one end side and the other end side, and on a straight line perpendicular to the longitudinal direction of the side plate portion 11. The intervals between the adjacent locking pieces 13, 14 and 15 are arbitrarily set irrespective of the intervals between the locking holes 9a and 9b, and the interval between the locking pieces 13 and 14 is 5 mm, for example. The interval between the pieces 14 and 15 is, for example, 3 mm.

  The locking pieces 13, 14 and 15 are bent toward the locking holes 9a and 9b corresponding to the bent locking claws 8a and 8b, and locked to the locking holes 9a and 9b. Further, the locking pieces 13, 14, 15 are all bent to the locking holes 9a, 9b and are locked to the locking holes 9a, 9b. At this time, the bent locking pieces 13, 14, 15 are set on the circuit board 2 by setting the distance between the locking claws 8 a, 8 b and the locking holes 9 a, 9 b in the direction perpendicular to the longitudinal direction of the upright portion 7. Proximity to the other surface (upper surface) 2b.

  When the locking piece 13 is locked in the locking holes 9 a and 9 b, the distance between the top plate portion 12 of the case lid 4 and the bottom plate portion 6 of the circuit board 2 or the case bottom plate 3 is maximized. When the locking piece 14 is locked to the locking holes 9a and 9b, the top plate portion 12 approaches the circuit board 2 (bottom plate portion 6), and when the locking piece 15 is locked to the locking holes 9a and 9b, The distance between the top plate 12 and the circuit board 2 (bottom plate 6) is the smallest. Thus, the height of the case lid 4 with respect to the bottom plate portion 6 of the circuit board 2 or the case bottom plate 3 can be adjusted by selecting the locking pieces 13, 14, 15 to be locked in the locking holes 9 a, 9 b.

  In FIG. 1A, since the locking claw 8b of the case bottom plate 2 is bent, the locking pieces 13, 14, and 15 are located on the side of the locking hole 9b provided corresponding to the locking claw 8b. It can be bent. Further, for example, a locking piece 14 other than the locking piece 13 is bent toward the locking hole 9b so that the top plate portion 12 of the case lid 4 and the discrete component capacitor C1 do not contact or approach each other.

  The side plate portions 11 and 11 and the top plate portion 12 of the case lid 4 are provided with ventilation slits (not shown). Further, on both end sides of the bottom plate portion 6 of the case bottom plate 3, input and output terminal blocks (not shown) are provided, respectively.

  Next, the operation of the first embodiment of the present invention will be described.

  Since the circuit board 2 has the chip parts of the transistors Tr1 and Tr2 mounted on the lower surface 2a, among the locking claws 8a and 8b, each locking claw 8b having the same distance from the bottom surface 6a of the bottom plate portion 6 is placed in a pair. The lower surface 2a of the circuit board 2 is placed on each of the bent engaging claws 8b. Thereby, the insulation distance, interference, etc. of a chip component and the baseplate part 6 of the case baseplate 3 are prevented.

  Since the circuit board 2 has discrete parts such as the capacitor C1 mounted on the upper surface 2b, the case lid 4 is provided corresponding to each locking claw 8b after the case lid 4 is placed on the pair of upright portions 7 and 7. The respective locking pieces 14 (or the locking pieces 15) are bent toward the respective locking holes 9b. Thereby, the circuit board 2 and the lighting circuit component 5 are accommodated in the case bottom plate 3 and the case lid 4 in a state where interference between the discrete component and the top plate portion 12 of the case lid 4 is prevented. And since the latching piece 14 is latched by the latching hole 9b, the case baseplate 3 and the case cover body 4 couple | bond.

  Further, since the locking claw 8b supports the lower surface 2a of the circuit board 2 and the locking piece 14 is close to the upper surface 2b of the circuit board 2, the movement in the direction (vertical direction) perpendicular to the longitudinal direction of the circuit board 2 is possible. Be regulated. Since the pair of cut and raised pieces 10, 10 provided on the bottom plate portion 6 of the case bottom plate 3 regulates the movement of the circuit board 2 in the longitudinal direction, the circuit board 2 is formed by the case bottom plate 3 and the case lid 4. It will be held inside. Thus, the circuit board 2 can be held with a simple configuration of the locking claws 8a and 8b, the locking pieces 13, 14, and 15 and the pair of cut and raised pieces 10 and 10.

  As described above, the height of the circuit board 2 with respect to the bottom plate portion 6 of the case bottom plate 3 can be adjusted by selecting the locking claws 8a, 8b to be bent, and the circuit board 2 can be adjusted by selecting the locking pieces 13, 14, 15 to be bent. Since the height of the case lid 4 can be adjusted, the degree of freedom in design such as selection of chip components to be mounted on the lower surface 2a of the circuit board 2 and selection and arrangement of discrete components to be mounted on the upper surface 2b are improved. Therefore, the discharge lamp lighting circuit can be easily designed, and it is not necessary to prepare a new case bottom plate 3 and case cover 4 each time the design is changed, thereby reducing the cost of the discharge lamp lighting device 1. Can be achieved.

  In the discharge lamp lighting device 1, two locking claws 8 a and 8 b and locking holes 9 a and 9 b are provided, but three or more locking claws may be provided. In this case, the intervals between the adjacent locking claws and the locking holes may be constant intervals or different intervals. Moreover, although the top plate part 12 of the case lid 4 is formed in a planar shape, it may be formed in a mountain shape or an arc shape.

  Next, a second embodiment of the present invention will be described.

  FIGS. 3A and 3B are luminaires showing a second embodiment of the present invention, in which FIG. 3A is a schematic top view, FIG. 3B is a schematic front view, and FIG. The same parts as those in FIG. 1 are denoted by the same reference numerals, and description thereof is omitted.

  The lighting fixture 16 shown in FIG. 3 is a direct-mounted lighting fixture that is installed on a construction such as a ceiling. The lighting fixture 16 is provided with a discharge lamp lighting device 1 shown in FIG. 1 inside a fixture body 17 formed in an inverted Fuji shape. Further, a pair of lamp socket mounting brackets 18, 18 are fixed by screws 19 at both ends in the longitudinal direction of the instrument body 17. The lamp sockets 20, 20 are attached to the lamp socket mounting brackets 18, 18. A straight tube fluorescent lamp 21 as a discharge lamp is mounted on the lamp sockets 20 and 20.

  The fluorescent lamp 21 is lit by the operation of the discharge lamp lighting device 1. When the fluorescent lamp 21 is turned on, the radiated light from the fluorescent lamp 21 is irradiated on the irradiation surface side as direct light and reflected light reflected by the reflecting surface of the instrument body 17.

  Since the lighting fixture 16 includes the discharge lamp lighting device 1 with improved design flexibility on the circuit board 2 without the need for a new case bottom plate 3 or case lid 4, the lighting fixture 16 is designed at a low cost. Can be manufactured.

BRIEF DESCRIPTION OF THE DRAWINGS The lighting device for discharge lamps of the 1st Embodiment of this invention is shown, (a) is a schematic longitudinal cross-sectional view, (b) is a schematic sectional drawing of the AA direction of (a). Similarly, the decomposition | disassembly schematic side view of the lighting device for discharge lamps. It is a lighting fixture which shows the 2nd Embodiment of this invention, (a) is a schematic top view, (b) is a schematic front view, (c) is a partially notched schematic side view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Discharge lamp lighting device 2 ... Circuit board 3 ... Case bottom plate 4 ... Case cover body 8a, 8b ... Locking claw 9a, 9b ... Locking hole 10 ... Cut-and-raised piece 13, 14, 15 ... Locking piece 16 ... Lighting equipment 17 ... Main body 21 ... Fluorescent lamp as discharge lamp

Claims (4)

A circuit board on which lighting circuit components are mounted;
A rectangular bottom plate portion, a pair of uprights provided on both sides along the longitudinal direction of the bottom plate portion so that the planes face each other, and the longitudinal direction of the pair of upright portions along the longitudinal direction, respectively. A plurality of locking claws provided at a predetermined interval in a direction perpendicular to each other, and each locking claw corresponding to the interval of the locking claws so as to be positioned on the non-bottom plate portion side with respect to the locking claw A plurality of locking holes provided on the bottom plate portion, and each locking claw of the same distance from the bottom surface of the bottom plate portion is bent inside the pair of uprights, and the one surface of the circuit board is supported by the locking claw With the case bottom plate;
A pair of side plate portions and a top plate portion straddling the side plate portions are formed so as to cover the pair of upper portions of the case bottom plate, and the pair of side plate portions respectively correspond to the locking holes so as to follow the longitudinal direction. A case lid that has a locking piece provided at the site, and is bent toward the locking hole so that the locking piece is close to the other surface of the circuit board and locked in the locking hole; ;
A discharge lamp lighting device comprising:   The discharge lamp lighting device according to claim 1, wherein a plurality of locking pieces of the case lid are provided in a direction orthogonal to the longitudinal direction of the side plate portion.   3. The discharge according to claim 1, wherein the bottom plate portion of the case bottom plate is provided with cut-and-raised pieces for restricting the movement of the circuit board in the longitudinal direction on both ends in the longitudinal direction. Lamp lighting device. A lighting device for a discharge lamp according to any one of claims 1 to 3;
A discharge lamp to be lit by the discharge lamp lighting device;
An appliance body in which a discharge lamp is disposed;
The lighting fixture characterized by comprising.

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