JPH0448503A - Lighting device for discharge lamp and illumination apparatus thereof - Google Patents

Abstract

PURPOSE:To make a lighting device thin and miniaturize it by connecting a power terminal to the connecting terminal of a terminal base section arranged on the side face of one terminal base, and connecting a lamp side to a load side terminal on a terminal base section arranged on the other terminal base. CONSTITUTION:Coil bobbins 24, 25 are arranged and wired in contact with or near a circuit board 8, thus the case 1 of a lighting device can be easily made flat and thin. A terminal base section 45 having a connecting hole and provided with a load side terminal connected to a lamp 33 inside is formed on a terminal base 41, the area for forming the connecting hole of the load side terminal can be made wide, a connecting terminal 59 connected to the load side terminal inserted into the connecting hole formed on the terminal base section 45 of the terminal base 41 is protruded in parallel below a connector 57 connected to the connecting hole of the terminal base section 45 of the terminal base 41, thus the case 1 can be made flat and thin even if many lead wires are connected to the fluorescent lamp 33.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a discharge lamp lighting device for a lighting fixture mounted on a ceiling and the lighting fixture thereof.

(Prior art) This type of conventional discharge lamp lighting device has a structure in which a cylindrical case housing a circuit board equipped with an inverter lighting circuit is attached to an appliance chassis with a length dimension comparable to the length of the lamp. It was getting worse. This wiring has many lead-out wires that connect the circuit board on which the inverter lighting circuit is mounted, the power supply, and the lamp, respectively, and the lead-out wires are connected via terminal blocks each attached to the chassis, which requires time and effort to assemble. In addition, this is an obstacle to making lighting devices thinner and more compact.Furthermore, lighting equipment using this discharge lamp lighting circuit also suffers from reflections on the chassis on which the circuit board and terminal block are installed, which are equipped with an inverter lighting circuit. A plate-mounted structure was adopted, which was an obstacle to making the device thinner and smaller.

(Problems to be Solved by the Invention) In conventional discharge lamp lighting devices, a circuit board equipped with an inverter lighting circuit is housed in a case, and the case, terminal block, etc. are individually attached to the chassis. However, there was a problem in miniaturization, and it was difficult to make lighting equipment using this discharge lamp lighting device thin and compact.

The present invention has been made in view of the above problems, and provides a discharge lamp lighting device that is easy to assemble and can be made thin and compact. It provides equipment.

[Structure of the invention]

(Means for Solving the Problems) The discharge lamp lighting device of the invention according to claim 1 includes a cylindrical case having openings formed at both ends, and an inverter lighting circuit mounted on a board and housed in the case. It includes a circuit board section, and a pair of terminal blocks that are provided by closing openings at both ends of the case and have built-in connection terminals connected to the circuit board section, and the one terminal block has a connection terminal for a power line. A terminal block portion is formed on the side surface thereof, and the other terminal block is formed with a terminal block portion having a load side terminal connected to the lamp on the upper surface thereof.

The discharge lamp lighting device of the invention according to claim 2 is the discharge lamp lighting device according to claim 1, wherein the case has a substantially U-shaped cross section with a hole for mounting the circuit board portion on the structure. It consists of a lower case member, and an upper case member attached to the lower case member and covering the circuit board section.

The lighting device of the invention according to claim 3 includes: a cylindrical case with openings formed at both ends; a circuit board section in which an inverter lighting circuit is mounted on a board and housed in the case; and an opening at both ends of the case. a pair of terminal blocks each having a built-in connection terminal that is closed and connected to the circuit board portion;
The case includes a reflector that is attached to the case, and a lamp socket that is attached to the reflector. It consists of a case member and an upper case member that is attached to the lower case member and covers the circuit board part, and the one terminal block is formed with a terminal block part having a power line connection terminal arranged on the side surface, The other terminal block has a terminal block portion having a load-side terminal connected to the lamp on the top surface, and the reflector plate has a substantially flat reflective surface and a raised side surface surrounding the case. A wiring surface for wiring to the lamp socket is formed on the inner surface, and a connector to be connected to the other terminal block is held.

A lighting fixture according to a fourth aspect of the invention is the lighting fixture according to claim 3, in which a reflector mounting portion is integrally formed with the terminal block.

(Function) The discharge lamp lighting device according to the invention as set forth in claim 1 houses a circuit board portion on which an inverter lighting circuit is mounted on the board in a cylindrical case having openings at both ends, and has openings at both ends of the case. A discharge lamp lighting device is assembled by blocking a pair of terminal blocks with built-in connection terminals connected to the circuit board, and a power terminal is connected to the connection terminal of the terminal block disposed on one terminal block. In addition, all you have to do is connect the lamp side to the load side terminal on the top of the terminal block on the other terminal block, and the load side terminal on the top of the terminal block on the other terminal block. Therefore, even if there are many lead wires, a large area for arranging the load-side terminals can be secured, and the lighting device can be made thinner and smaller.

In the discharge lamp lighting device of the invention as set forth in claim 2, the case covering the circuit board is formed by attaching the upper case member to the lower case member having a substantially U-shaped cross section to which the circuit board is attached. The lighting device can be attached to the structure by attaching it to the structure through a hole.

In the lighting fixture of the invention set forth in claim 3, the lighting fixture is configured by attaching a reflector provided with a lamp socket to the case of the discharge lamp lighting device set forth in claim 2, and that The case of the discharge lamp lighting device is covered by the formed rising side, and the wiring on the wiring surface connected to the lamp socket on the inner wiring surface is connected to the load side terminal of the other terminal block with a connector to connect the electric wires to 8 sides. This allows lighting equipment to be made thinner and smaller.

In the lighting device of the invention according to claim 4, the reflector can be attached to the terminal block integrally formed with the reflector, the number of parts is small, the structure is simple, and the ease of assembly is improved. Ru.

(Embodiment) The configuration of an embodiment of the present invention will be described with reference to FIGS. 1 to 4. FIG.

Reference numeral 1 denotes a case, and the case 1 is a flat rectangular cylinder opened at both ends, consisting of a lower case member 2 having a substantially U-shaped cross section and an upper case member 3 having a substantially U-shaped cross section fitted into the lower case member 2. The fitted state is maintained by a boss-like protrusion formed on one side of both case members 2.3 and a boss-like recess 4 formed on the other side. .

The lower case member 2 is formed longer than the upper case member 3 with both ends thereof extending in the longitudinal direction, and both ends of the lower case member 2 protruding from the upper case member 3 are attached to a structure such as a ceiling. For installation, use hole 5 for installation at part 6.
is formed.

Reference numeral 7 denotes a circuit board section in which an inverter lighting circuit is mounted on a printed circuit board 8. This circuit board section 7 is housed and attached to the lower case member 2, and is covered with the upper case member 3. ing. This inverter lighting circuit has through-hole inserted components on the front surface of the circuit board 8, such as a transistor 1O mounted with a heat sink 9, a capacitor 11, a resistor 12, etc., and surface-mounted components on the back surface of the circuit board 8, such as a capacitor. 13. Resistor 14 etc.
and an inverter transformer 15 attached by inserting the circuit board 8. This inverter transformer 1
As shown in FIGS. 5 and 6, ferrite core 1617 and ferrite core 16.5 are vertically opposed and abutted against each other. Secondary coil 18 wound at +7
and a secondary coil 19. and,
Ferrite core 16. In IT, side leg centers 22 are formed parallel to each other via connecting portions 21 that are connected at right angles to both sides of the center rotary center 20, and a leakage circumferential center 23 is located between the center rotary center 20 and the side leg centers 22 and connected to the connecting portion 21. are formed parallel to each other. In addition, the side leg cores 22 are projected longer than the center rotary core 20 so as to butt each other, and the leaky circumferential core 23 is shorter than the center rotary core 20, and the gap G1 between the tips of the center rotary cores 20 and 20 and the tip of the leaky core 23 The relationship with the gap G between the two is G<62.

Further, the secondary coil 18 is connected to the ferrite core 16.
It is wound around a coil bobbin 24 that is fitted to a center rotary core 20 of +7 and has a coil winding portion open on the outer circumferential surface, and the secondary coil 19 is fitted to a leaky circumferential center 23 and has a coil winding portion open on the outer circumferential surface. It is wound around the coil bobbin 25, and the -th coil 1
A secondary coil 19 is disposed outside of the coil 8 .

As shown in FIG. 1, the lower ferrite core 17 of the inverter transformer 15 is fitted into the insertion hole 26 formed in the circuit board 8.
The bottom surface of the upper ferrite core 16 is close to or in contact with the inner surface of the lower case member 2, and the upper surface of the upper ferrite core 16 is close to or in contact with the inner surface of the upper case member 3.
Terminals 27 connected to the lead wires of the secondary coil 19 at the upper part of the coil bobbin 24 and 25 are inserted through through holes into the surface of the circuit board 8, and are connected to the lower surface of the circuit board 8. The lower surfaces of the coil bobbins 24 and 25 of the secondary coil 19 are brought into contact with or close to the circuit board 8 so that the winding direction thereof is parallel to the circuit board 8.

Further, for example, the heat sink 9 attached to the transistor IO is brought into surface contact with the side surface of the lower case member 2 and the inner surface of the upper case member 3.

Furthermore, the inverter circuit 30, as shown in FIG.
It is connected to a DC power supply circuit 32 connected to an AC power supply 31, and a fluorescent lamp 33 is connected to the secondary coil 19 of the inverter transformer 15 of this inverter circuit 30. This inverter circuit 30 is
For example, by the on/off operation of the switching transistor 34, the fluorescent lamp 33 is transferred from the secondary coil 19 to the fluorescent lamp 33 by the resonant operation of a resonant circuit formed by the capacitor 35 connected to the emitter of the transistor 34 and the primary coil 18 of the inverter transformer 15. An operating voltage is applied to. Note that a transistor protection diode 36 is connected between the emitter and collector of the transistor 34.

This inverter transformer 15 is connected to a capacitor 35.
Due to the resonance operation of the resonant circuit formed by the primary coil 18 of the inverter transformer 15 and the primary coil 18 of the inverter transformer 15, an excitation current flows through the secondary coil 18, and as shown in FIG. The center rotary core 2 of the ferrite core 16
0, through the side leg core 22 of the other ferrite core 17, and circulates to the central rotary core 20, and the exciting magnetic flux becomes a magnetic circuit shown by the solid line in FIG. , has little to do with magnetic resistance, and the magnetic resistance in this magnetic circuit is only at the abutting portions of the side leg cores 22, 22, and the magnetic resistance is extremely small, with approximately IN% of the magnetic energy being supplied to the secondary coil 19. Ru.

Further, a magnetic circuit for generating leakage inductance by the secondary coil 19 is formed between the side leg core 22 and the leakage rotor core 23, as shown by the chain line in FIG. 7, and the magnetic flow direction of this magnetic circuit is The flow of the excitation magnetic flux of 18 is opposite to that of the leakage rotor core 23.0, and current-limiting leakage inductance is obtained due to magnetic leakage in the air gap between the leakage rotary cores 23.0, thereby limiting the operating current emitted by the secondary coil 19 to the fluorescent lamp 33. can. This magnetic circuit is shorter than the magnetic path of the magnetic circuit of the primary coil 18, and can secure a large ampere turn for generating leakage inductance, and can efficiently generate leakage inductance.
- The number of turns of the primary coil 18 and the secondary coil 19 can be reduced, and the heights of both coils 18 and 19 can be reduced, making it possible to reduce the thickness and weight.

In addition, in FIGS. 1 and 2, 40 and 41 are a pair of terminal blocks that are firmly attached to the lower case member 2 and are fitted into the openings at both ends of the case 1 to respectively close the openings at both ends, Connecting terminals built into the terminal blocks 40 and 41 are connected to the circuit board 8 of the circuit board section 7, and the circuit board 8 is held within the case 1 by the terminal blocks 40 and 41 at both ends. A terminal block portion 43 is formed on the side surface of the one terminal block 40 and has a plurality of parallel connection holes 42 in which connection terminals for connecting power lines and feed wiring power lines are disposed. Further, the other terminal block 41 has a terminal block section 45 formed on its upper surface, which has a connection hole 44 in which a load-side terminal connected to the lamp 33 is provided inside.

Furthermore, screw holes 4 are provided on the top surface of both terminal blocks 411.41.
The reflector mounting parts 6 are each formed with a portion 47.

Further, in FIG. 2, reference numeral 50 denotes a reflector, which has a substantially flat reflective surface 51 and a rising side surface 5 surrounding the case 1.
2 is formed. Also, the reflective surface 5 of this reflector 50
A plurality of pairs of lamp sockets 53 are attached to opposite ends of the lamp socket 1, respectively. Further, this reflector 50 is formed with screw insertion holes 54 that are opposed to the screw holes 46 of the reflector attachment portions 47 of the terminal blocks 40 and 41 attached to both ends of the case 1, respectively.

Further, as shown in FIGS. 3 and 4, the reflector 5
On the inner surface of G is an electric wire 5 connected to the lamp socket 53.
A wiring surface 56 for wiring the terminal block 5 is formed, and a connector 57 connected to the connection hole 44 of the terminal block section 45 of the other terminal block 41 is connected to this electric wire 55. This connector 57 is fixed to the inner surface of the reflector 50 or the electric wire 5
It is also possible to leave it connected to 5. and,
This connector 57 has a connection hole 58 provided inside with a terminal for connecting the electric wire 55 formed on the outer end surface and side surface. Furthermore, the connector 57 has connection terminals 59 protruding in parallel on the lower surface thereof, which are inserted into the connection holes 44 formed in the terminal block portion 45 of the other terminal block 41 and connected to the load side terminals.

Further, the connector 57 has a vertical alignment portion 61 formed on its inner surface that is continuous with the inclined engagement guide surface 60 and is engaged with the outer end surface of the other terminal block 41, and further includes a reflector. For installation, use the screw insertion hole 62 opposite to the screw hole 46 of the part 47.
is formed. Further, a positioning body 63 is attached to the inner surface of the reflector 50, and the positioning body 63 is connected to an inclined engagement guide surface 64 on the inner surface and is engaged with the outer end surface of the other terminal block 41. A vertical positioning portion 65 is formed for mounting the reflector, and a screw insertion hole 66 is formed opposite to the screw hole 46 of the portion 47 for attaching the reflector.

Next, the operation of this embodiment will be explained.

In the discharge lamp lighting device, the inverter transformer 15, which is a factor in increasing the size of the device, has a structure and a circuit board 8.
We are considering installing this product in the future, and have achieved a long lifespan and a thinner design. That is, the coils 18 and 19 are wound in parallel with the circuit board 8 to form a flat coil, and when installed on the circuit board 8, the lower ferrite core 17 of the inverter transformer 15 is inserted into the insertion hole of the circuit board 8. 26, the bottom surface of the lower ferrite core 17 is close to or in contact with the inner surface of the lower case member 2, the upper surface of the upper ferrite core 16 is close to or in contact with the inner surface of the upper case member 3, and the coil bobbin By arranging and wiring 24.25 in contact with or close to the circuit board 8, case 1 of the lighting device
This makes it easy to make it flat and thin. In addition, the other terminal block 41 has a terminal block section 45 having a connection hole 44 on the top surface of which a load-side terminal connected to the lamp 33 is provided inside.
The connector 57 connected to the connection hole 44 of the terminal block portion 45 of the other terminal block 41 has a large area for forming the connection hole of the load side terminal. Since the connection terminals 59 are inserted in the connection hole 44 formed in the terminal block part 45 and connected to the load side terminals and protrude in parallel, the number of lead-out electric currents [55] connected to the fluorescent lamp 33 is large. However, it is possible to make the case flat and thin.

Further, the case 1 is formed of a lower case member 2 and an upper case member 3 fitted to the lower case member 2, and both ends of the case 1 are closed with terminal blocks 40 and 41.
．． By connecting the circuit board section to 41, the structure of the lighting device is simple and can be made into a unit. Also, case 1
Both ends of the lower case member 2 are extended to be long, and both ends of the lower case member 2 protruding from the upper case member 3 are formed in a part 6 with holes 5 for mounting to a structure such as a ceiling. This makes installation easy.

Furthermore, one terminal block 40 is formed with a terminal block section in which a connection terminal for a power line is arranged, and the other terminal block is formed in a terminal block section in which a load side terminal connected to a lamp is arranged.
Wiring becomes easier.

In addition, both terminal blocks 4 (1, 4) of case 1 of the discharge lamp lighting device
The setscrew 10 inserted through the insertion hole 54 of the reflector 5o is inserted into the screw hole 46 on the top surface of the terminal block 40 , and the set screw 10 is inserted through the screw insertion hole 62 of the connector 57 or the screw insertion hole 66 of the alignment body 63 . .41 reflector mounting is done using screw hole 4 in section 47.
6 and attaching the reflector 5o to the case 1 via the terminal block 40, 41, a lighting fixture is constructed. When attaching this reflector 50 to the case 1, the alignment body 6
While the reflector 5o is aligned with the case 1 by the inclined engagement guide surface 64 of No. 3 and the inclined engagement guide surface 60 of the connector 57, the reflector 5o is aligned with the outer end surface of one terminal block 40. The positioning portion 65 of the body 63 and the positioning portion 61 of the connector 57 engage with the outer end surface of the other terminal block 41, respectively, so that the reflector 50 is positioned with respect to the case 1. In this state, the connection terminal 59 of the connector 57 is inserted into the connection hole 44 formed in the other terminal block 41 and connected to the load terminal.

A lighting fixture configured in this manner does not require a separate chassis and can be made flat and thin. And case 1
is covered by a rising side surface 52 around the reflector 50.

Specifically, the thickness of the case 1 is 20 m1, and the thickness of the lighting fixture is reduced to about 25 m5 at the rising side surface 52 of the reflector 50.

Next, the configuration of another embodiment will be explained with reference to FIGS. 9 to 12.

In this embodiment, the discharge lamp lighting device has the same configuration as the previous embodiment, and the reflector 71 is substantially flat and curved in a downward arc in the width direction. The connector 72 provided on the inner surface of the reflector 71 has an alignment portion 73 formed of a plate material having spring properties to be engaged with the outer end surface of the other terminal block 41. Elastic engagement pieces 7 are disposed on both sides of the case 1 and are engaged with and disengaged from edge pieces 75 formed by bending inward from the opening edge of the rising side part 74 of the case 1 and facing each other.
6 is provided, and a mounting portion 77 formed of a plate material having spring properties provided on the reflector 71 includes an alignment portion 78 that is engaged with the outer end surface of one terminal block 40 and a rising side portion 7 of the case 1.
An engagement piece portion 79 that is engaged with and disengaged from the edge piece portion 75 formed at 4 is integrally formed.

In the configuration of this embodiment, the reflector 71 is mounted by engaging the elastic engagement pieces 76 provided on both sides of the connector 72 with the edge piece 75 and engaging the mounting portion 77 with the edge piece 75. Attached to case 1.

In addition, to attach the reflector 71, the alignment part 78 is engaged with the outer end surface of one terminal block 40 formed in the part 77, and the alignment part 73 provided in the connector 72 is engaged with the outer end surface of the other terminal block 41. The reflector 71 is engaged with the outer end surface, positioned, and attached to the case 1.

〔Effect of the invention〕

According to the invention as set forth in claim 1, a circuit board section having an inverter lighting circuit mounted on the board is housed in a cylindrical case having openings formed at both ends, and the openings at both ends of the case are connected to the circuit board section, respectively. Each of the terminal blocks is closed with a pair of terminal blocks each having a built-in connection terminal, one of the terminal blocks forming a terminal block portion having a connection terminal for a power line, and the other terminal block having a connection terminal connected to a lamp. Since the terminal block section has the load side terminals arranged on the top surface, the circuit board section with the inverter lighting circuit attached to the board is housed in a cylindrical case with openings at both ends, and the openings at both ends of the case are opened. The discharge lamp lighting device is assembled into a unit by blocking a pair of terminal blocks each having a built-in connection terminal connected to the circuit board, and the terminal block disposed on the side of one terminal block is closed. Connect the power terminal to the connection terminal, and connect the lamp side to the load side terminal on the top surface of the terminal block on the other terminal block (in addition, the terminal block on the other terminal block Since the load-side terminals are arranged in the lamp, even if there are many lead wires, a large area can be provided for the load-side terminals, and the lighting device can be made thinner and smaller.

According to the invention as set forth in claim 2, the case includes a lower case member having a substantially U-shaped cross section in which a hole is provided for mounting the circuit board portion to the structure, and a lower case member having a substantially U-shaped cross section for housing the circuit board portion, and a lower case member that is attached to the lower case member and has a hole for mounting the circuit board portion. Since the upper case member covers the circuit board part, the case covering the circuit board part is formed by attaching the upper case member to the lower case member having a substantially U-shaped cross section to which the circuit board part is attached, and the case covering the circuit board part is formed. The lighting device can be easily attached to a structure by attaching it to the structure through a hole.

According to the invention set forth in claim 3, the reflector is attached to the case of the discharge lamp lighting device including the case, the circuit board part, and the pair of terminal blocks and has the lamp socket, and the reflector has a substantially flat reflective surface. A rising side surface is formed around the case to cover the case, and a wiring surface for wiring to the lamp socket is formed on the inner surface, and a connector connected to the other terminal block is held. A lighting fixture was constructed by attaching a reflector with a socket, and the case of the discharge lamp lighting device was covered by the rising side formed around the reflector, and connected to the lamp socket on the inner wiring surface. By connecting the wiring on the wiring surface to the load-side terminal of the other terminal block with a connector, wire connection can be easily made, and the lighting fixture can be made thinner and smaller.

According to the invention set forth in claim 4, since the reflector mounting part is integrally formed on the terminal block, the reflector can be attached to the reflector mounting part integrally formed on the terminal block, and the part The number is small, the structure is simple, and the ease of assembly is improved.

[Brief explanation of drawings]

Fig. 1 is a vertical cross-sectional view of a lighting fixture according to an embodiment of the present invention;
The figure is an exploded perspective view of the same as the above, Figure 3 is a perspective view of the reflector as the above, Figure 4 is a perspective view of the connector as the above, Figure 5 is a perspective view of the inverter transformer as the above, Figure 6 is a perspective view of the ferrite core as the above, Fig. 7 is an explanatory diagram of the inverter transformer, Fig. 8 is the same circuit diagram as above, Fig. 9 is an exploded perspective view of the lighting equipment of another embodiment, Fig. The vertical side view and FIG. 12 are perspective views of the same reflector. 1. Case, 2. Lower case member, 3. Upper case member, 7. Circuit board part, 8. Circuit board, 40.・One terminal block, 41... The other terminal block, 43, 45... Terminal block part, 47... Reflector mounting part, 50° 71... Reflector,
52...Rising circumferential surface, 53...Lamp socket, 56...
・Wiring side, 57.72...Connector. "Vl[

Claims (4)

[Claims] (1) A cylindrical case with openings formed at both ends, a circuit board section in which an inverter lighting circuit is mounted on the board and housed in the case, and the circuit board provided with the openings at both ends of the case closed, respectively. a pair of terminal blocks each having a built-in connection terminal connected to the terminal block, the one terminal block forming a terminal block part having a connection terminal for a power line arranged on a side surface, and the other terminal, 1. A discharge lamp lighting device characterized by forming a terminal block portion on the top surface of which load-side terminals connected to the lamp are arranged. (2) The case consists of a lower case member with a substantially U-shaped cross section that has a mounting hole for attaching to a structure and a circuit board section is attached and housed therein, and an upper case member that is attached to the lower case member and covers the circuit board section. The lighting device according to claim 1, characterized in that: (3) a cylindrical case with openings formed at both ends; a circuit board portion in which an inverter lighting circuit is mounted on a board and housed within the case; and a circuit board provided with openings at both ends of the case closed, respectively A pair of terminal blocks each having a built-in connection terminal connected to a substrate, a reflector attached to the case, and a lamp socket attached to the reflector, the case having a mounting hole for attaching to a structure. A lower case member having a substantially U-shaped cross section, in which the circuit board section is mounted and housed, and an upper case member attached to the lower case member and covering the circuit board section, and a power line is connected to one of the terminal blocks. A terminal block portion is formed with terminals disposed on the side surface, and the other terminal block is formed with a terminal block portion having load side terminals connected to the lamp disposed on the top surface, and the reflector is a substantially flat reflective body. 1. A lighting fixture, characterized in that a rising side surface is formed around the periphery to cover the case, a wiring surface for wiring to the lamp socket is formed on the inner surface, and a connector connected to the other terminal block is held. (4) The lighting device according to claim 3, wherein the reflector mounting portion is integrally formed on the terminal block.