JPH01289005A - Lighting equipment for electric-discharge lamp - Google Patents

Abstract

PURPOSE:To separate the device body and the electric-discharge lamp and to make the device in a small size and a light weight by providing a penetrating hole on the upper case to form a device body, through which a base seat is penetrated, and gearing members in the lower case and in the inner case respectively which gear with other gearing members, and furnishing an electric- discharge lamp connection in a recessed form in the lower case. CONSTITUTION:A base 32 is penetrated in the penetrating hole 5 of the upper case 2, and, while a gearing recess 7 furnished at the tube body 4 of the upper case 2 is geared to a gearing projection 14 furnished at the lower case, a gearing ring 9 of the upper case 2 is geared with a bowl-form member 23 in the inner case 21, to complete the assembly of the lighting equipment. After a fluorescent lamp 41 is installed, the lighting equipment is screwed and fixed in a bulb socket in the same manner as the ordinary screw type socket. Therefore, by inserting a socket 45 of a fluorescent lamp 41 to the electric discharge lamp connection formed in a recess at the lower case 3, the fluorescent lamp 41 can be installed dismountably to the lighting equipment.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a lighting fixture for a discharge lamp that is removably attached to a light bulb socket, and particularly relates to a lighting fixture for a discharge lamp that is detachably attached to a light bulb socket. This relates to lighting equipment for discharge lamps.

[Prior Art] As a conventional lighting fixture for a discharge lamp of this type, there is one described, for example, in Japanese Patent Application Laid-Open No. 185805/1983.

This device includes a one-piece housing containing a large number of various electronic components, and a bulb with a U-shaped glass enclosure that generates light through fluorescence. Both ends of the glass enclosure are mounted on the base. A one-piece lighting device is constructed by fitting the entire base into a recess provided in the housing.

[Problems to be Solved by the Invention] However, in such conventional lighting devices for fluorescent lamps, the housing and the bulb are integrated, so if the bulb is damaged due to, for example, electrode wear, the capacitor may be damaged. Even if the electronic components such as the above are operating normally, the housing cannot be used and the entire device must be replaced, which is uneconomical.

The present invention has been made in view of such conventional problems, and consists of a lighting device in which only a discharge lamp such as a fluorescent lamp is separated, and other high-frequency lighting circuits and the like are housed in the body.
The purpose of this invention is to solve the above problem by making it possible to attach this to a light bulb holder independently.

[Means for Solving the Problems] In order to achieve the above object, a lighting fixture for a discharge lamp according to the present invention includes an upper case and a lower case forming a substantially cylindrical container body, and a lower case in the container body. an inner case attached to the case; a cap part screwed and connected to a light bulb holder that is supported by the inner case so as to be rotatable at a predetermined angle and to which power is supplied; and a discharge lamp housed in the body. a board mounted with a high-frequency lighting circuit for lighting the upper case, the upper case is provided with a through hole through which the base part passes through, and an engaging part that engages with the lower case and the inner case, respectively; is characterized in that the discharge lamp connection part to which the connection pin of the discharge lamp is connected is recessed.

The discharge lamp connection portion can be provided with a holding spring that engages with an engagement convex portion provided on the side of the socket of the discharge lamp to engage and hold the discharge lamp.

Further, it is preferable that a plurality of substrates on which electronic components are mounted are arranged in multiple layers.

Furthermore, it is most preferable that the smoothing capacitor is built into the base and that the smoothing capacitor and the plurality of substrates are connected by lead wires.

[Function] By inserting the socket of a discharge lamp such as a fluorescent lamp into the discharge lamp connection part recessed in the lower case, the discharge lamp is removably attached to the lighting fixture. After that, the lighting device is connected to the power supply side by holding the container body consisting of the upper case and the lower case and screwing the base into the light bulb holder.

Therefore, if a breakdown occurs in the discharge lamp, only the discharge lamp can be replaced, and the lighting fixture, which is separate from the discharge lamp, can be continued to be used.

By providing a holding spring at the discharge lamp connection part,
The discharge lamp can be attached and fixed to this lighting equipment simply by inserting the socket, and by pulling the discharge lamp with a force slightly greater than the urging force of the holding spring,
The discharge lamp can be easily removed.

In addition, by arranging multiple substrates in layers,
A large number of electronic components can be efficiently arranged in a narrow space, thereby making the lighting fixture compact.

Further, by incorporating a smoothing capacitor in the base portion and connecting the smoothing capacitor to a plurality of substrates using lead wires, the above-mentioned size reduction can be achieved while reducing the thermal influence on the smoothing capacitor.

[Example] Next, an example of the present invention will be described with reference to the drawings.

1 to 8 are diagrams showing one embodiment of the present invention.

First, to explain the structure, reference numeral 1 in the figure is a substantially cylindrical container, and this container 1 is composed of an upper case 2 and a lower case 3.

The upper case 2 includes a cylindrical body portion 4 and a cylindrical body portion 4.
It consists of an upper surface part 6 that extends radially inward continuously from the upper end and has a through hole 5 in the center, and these cylindrical body part 4 and upper surface part 6 are integrally formed of a heat-resistant synthetic resin material or the like. are doing. An engagement recess 7 is provided on the inner circumferential surface of the cylindrical body 4, and a vent 8 is provided on the upper surface 6 for discharging the heat inside the container l to the outside. An engaging ring 9 is formed in an extending annular shape. Engagement ring 9
These include a tapered portion 9a provided with an inwardly inclined surface forming an angle of 45 degrees, and a stopper portion 9b that protrudes more than the tapered portion 9a.
It is formed by alternating and consecutively.

The lower case 3 also includes a socket holder 11 forming a recessed part 10 into which a socket 45 of a fluorescent lamp 41, which is a specific example of a discharge lamp, is inserted, and a lower surface part 12 continuous to the lower end of this socket holder 11. The socket holder 11, the lower surface 12, and the peripheral edge 13 are connected to the upper case 2.
It is integrally formed from the same heat-resistant synthetic resin material. The peripheral edge 13 is formed with an engaging convex portion 14 having an outward protrusion at its tip, and by engaging the engaging convex portion 14 with the engaging concave portion 7, the upper case 2 and The lower cases 3 can be removably connected.

The bottom piece of the socket holder 11 has pin holes 1 into which four connector pins protruding from the tip of the socket 45 are inserted.
5, and on the upper surface of the bottom piece, corresponding to the pin hole 15, a connection mechanism storage part 17 in which a conductive connection tongue piece 16 is individually housed is formed. Openings 18 are provided on both sides of the socket holder 11.
The retaining springs 20 that engage with the engaging protrusions 45a provided on both sides of the socket 45 are exposed to the retaining springs 20. The holding spring 20 is
Its base is engaged with the connection mechanism storage section 17 and supported in a cantilevered manner, and a stopper 22 provided on an internal case 21 attached to the upper part of the VC integration mechanism storage section 17 is brought into contact with it from above. This prevents it from coming off upwards.

The socket holder 11 having the recessed portion 10, the connecting tongue piece 16 provided in connection with the socket holder 11, the holding spring 20, etc. constitute a discharge lamp connecting portion.

The inner case 21 also includes a bowl-shaped portion 23 in which the engagement ring 9 of the upper case 2 engages with a cap portion 27, which will be described later.
The arm portion 24 has an arm portion 24 that protrudes laterally from the bowl-shaped portion 23, and the stopper 22 protrudes from the back surface of the bowl-shaped portion 23. At the tip of the arm portion 24, an engagement piece 25 that protrudes downward is provided. By engaging the protrusion provided at the tip of the engagement piece 25 with the engagement hole 26 provided on the side of the connection mechanism housing section 17, the inner case 21 can be inserted into the container l. It is removably engaged and fixed to the socket holder 11.

The bowl-shaped portion 23 has a seat support portion 28 that rotatably supports the lower end portion of the mouthpiece portion 27 from both sides, and a pair of engagement stoppers 29 provided between the two seat portions 28. The protrusion provided at the tip of the fitting stopper 29 engages with the circumferential groove 30 provided in the mouthpiece 27, thereby causing the inner case to close. The base portion 27 is configured to be rotatable relative to (2). Stop portions 27a and 29a are provided on the cap portion 27 and the engagement stopper 29, respectively, thereby preventing rotation of both members 27 and 29 by a predetermined angle (90 degrees in this embodiment) or more. In addition, the seat support portion 28 includes
A tapered portion 9a provided on the engagement ring 9 of the upper case 2
A taper receiving portion 28 having an inclination angle of 45 degrees that engages with the
a, and an engagement space in which the stopper part 9a engages is provided between the tapered receiving parts 28a, thereby preventing relative rotation between the upper case 2 and the inner case 21.

Reference numeral 31 shown in FIG. 1 is a cap screwed onto the upper part of the cap 27, and the cap 31 and the cap 27 constitute the cap 32. A smoothing capacitor 3 is provided in the hole of the cap 32.
The negative electrode is connected to the terminal plate 35 at the tip of the base 31 through a conductor 34, and the other electrode is connected to the It is electrically connected to the substrate 37 of No. 2 by a lead wire.

As shown in FIG. 7 etc., the second board 37 has one end held between the inner case 21 and the socket holder 11,
Each terminal of the connecting tongue piece 16 is inserted into a slit penetrating its front and back surfaces. The second board 37 is mounted with electronic components that constitute a preheating circuit when starting the discharge lamp and electronic components that constitute a part of the power supply circuit. A board 38 is arranged. The first board 38 has an opening 39 through which a discharge lamp connection part such as the socket holder 11 passes, and also contains electronic components that constitute at least a part of the high-frequency lighting circuit and electronic components that constitute the protection circuit. is mounted and electrically connected to the second board 37 by a lead wire.

FIG. 8 shows an electric circuit according to this embodiment.

This electric circuit includes a power supply circuit 40 that is screwed into the light bulb holder to supply power, a preheating circuit 42 that heats the filament of the fluorescent lamp 41 to a predetermined temperature at the time of starting lighting, and a preheating circuit 42 that heats the filament of the fluorescent lamp 41 to a predetermined temperature at the time of lighting start. , a protection circuit 43 for protecting the circuit from abnormal voltages generated when a filament is disconnected, a fluorescent lamp is removed, etc., and a high frequency lighting circuit 44 for generating Takaoka wave pulses.

The power supply circuit 40 consists of a fuse F1, a capacitor C1, a surge absorber SZI, actance Ll, L2, a bridge diode D1, and a smoothing capacitor C2 which is an electrolytic capacitor. It functions to protect the circuit from noise, etc., and the two actances Ll and L2 are power line noise filters generated by this circuit.The bridge diode DI rectifies the power supply current supplied to the circuit into DC current. After that, smoothing capacitor C
Step 2 smooths the DC current.

Preheating circuit 42 includes resistors R1, R2, R3 and relay RLI.
, an electrolytic capacitor C3, a capacitor C4, a Zener diode 201, a transistor Q1, and a resistor R4.
The transistor Q1 is operated in the ON state for a preheating time determined by the time constant of the electrolytic capacitor C3, and the resistor R1 is turned on.
, R2, the relay RLI closes the contact circuit, and a preheating current is supplied to the filament of the fluorescent lamp 41 via the output transistor TI. Zener diode 201 is for protecting relay RLI from overvoltage flowing through this circuit, and capacitor C4 is for absorbing surge voltage at the contacts of relay RLI.

The protection circuit 43 includes resistors R4, R5, R8 and a capacitor C.
5, Zener diode ZD2, and diode D2. D3
, a thermistor THI, a thyristor D4, and a surge absorber SZ2, and stops the oscillation of the high frequency lighting circuit 44 based on the heat generated by the surge absorber SZ2. In other words, the heat generated by the surge absorber SZ2 is absorbed by the thermistor THI.
is detected, and when the temperature rises above a predetermined temperature and the gate voltage of thyristor D4 becomes above a predetermined value,
By making the anode and cathode of the thyristor D4 conductive and setting the power source of the high frequency lighting circuit 44 to approximately OV, oscillation is latched in a stopped state. In this case, the latched protection circuit 43 is not reset unless the 100V power supply is turned OFF once, so it is very effective as a protection means for the high frequency lighting circuit 44.

Moreover, the high frequency lighting circuit 44 has a resistor +27. R8, R9
, R10, R11, capacitors C8, C7, CB, and transistor Q2. It consists of an oscillation circuit formed by an unstable multivibrator circuit consisting of Q3 and Q4, a transistor Q2, and an output transformer T1 having a capacitor C8, and the DC voltage supplied from the power supply circuit 40 is connected to the resistor R.
4, the voltage is stepped down and supplied to the oscillation circuit. transistor Q
The ON time of the transistor Q2 is set by the time constant of the resistors RIO, R11 and the capacitor C7, and the OFF time of the transistor Q3 is set by the time constant of the resistor R9 and the capacitor C6. Both transistors Q2. ON in Q3
The turned-off sine wave is shaped into a rectangular wave by the transistor Q4. Note that the capacitor C8 is for stabilizing the oscillation output.

The oscillation output shaped into a rectangular wave is supplied to the gate of transistor Q5 (MOS power FET), and
5 is turned on and off, and the fluorescent lamp 41 connected to the output transformer TI is turned on at high frequency. The capacitor C8 is a ballast capacitor for adjusting the load so as not to burden the circuit with changes in impedance of the filament at the end of the life of the fluorescent lamp 41.

In addition, in the event of an abnormality such as at the end of the life of the fluorescent lamp 41, when the filament is broken, or when the fluorescent lamp 41 is removed, the MOS power F is
A high voltage pulse is now applied to the ET transistor Q5, but such high voltage pulse is
2 is consumed and generates heat, the protection circuit 42 is activated as described above.

The lighting equipment may be assembled, for example, as follows.

First, the connecting tongue piece 16 is inserted into the second board 37 on which a desired electronic component is mounted, and the electronic part is electrically connected to the protruding end of the connecting tongue piece 16. It is connected to the second substrate 37 by a lead wire. Then, the holding spring 2 is attached to the socket holder 11 of the lower case 3.
0, insert the socket holder 11 into the through hole 39.
At the same time, the second board 37 is placed on the socket holder 11 and the inner case 21 is inserted into the socket holder 1 so as to sandwich the second board 37 therebetween.
Electrodeposit on 1.

Next, the smoothing capacitor 33 connected to the second board 37
The lead wire is passed through the notch 36, and the smoothing capacitor 33 at the tip thereof is placed approximately in the center of the bowl-shaped portion 23 of the inner case 21. Then, after inserting the power wire through the notch 36 and introducing it into the cap 27, the cap 31 is screwed into the cap washer 27, and the power wire introduced into the cap 27 is soldered to the cap 31. Attach and connect. Subsequently, the base portion 27 is fitted into the bowl-shaped portion 23 of the inner case 21.

After that, the cap part 32 is passed through the through hole 05 of the upper case 2, and the engagement recess 7 provided in the cylindrical body part 4 is inserted into the lower case 3.
The assembly is completed by engaging the two provided engaging convex portions 14 and engaging the engaging ring 9 with the bowl-shaped portion 23 of the inner case 21.

This lighting fixture having the above-described configuration includes a fluorescent lamp 41
After attaching it, screw it into the bulb holder as you would a normal screw-in socket.

That is, by inserting the socket 45 of the fluorescent lamp 41 into the discharge lamp connecting portion recessed in the lower case 3 of the vessel 1, the fluorescent lamp 41 is removably attached to the lighting fixture.

After that, by holding the container body 1 and screwing the cap part 32 into the light bulb holder, this lighting fixture is connected to the power source side, and thereby it is possible to supply power to the fluorescent lamp 41 through this lighting fixture. Become.

Therefore, if a failure occurs in the fluorescent lamp 41, only the fluorescent lamp 41 can be replaced, and the lighting fixture screwed into the light bulb receiver can continue to be used. Therefore, this type of lighting device can be provided at a low cost, and since the inverter-lit fluorescent lamp does not flicker and has good lighting efficiency, it is possible to save power.

In addition, since the discharge lamp connection part is provided with the holding spring 20, the fluorescent lamp 41 can be easily and securely attached to this lighting fixture by simply inserting the fluorescent lamp 41, and the fluorescent lamp 41 can be attached to the holding spring 20. It can be easily removed by pulling with a force slightly greater than the biasing force of 20.

Furthermore, since the electronic components are mounted in a distributed manner on two boards 37 and 38 that are arranged in layers within the vessel, this lighting fixture can be made as compact and lightweight as possible. can. In particular, by accommodating the smoothing capacitor 33 within the base portion 32, it becomes easier to reduce the size and weight of the capacitor 33.

Further, since the base portion 32 is configured to be rotatable by 90 degrees, the mounting state of the fluorescent lamp 41 can be unified when mounted, and a beautiful appearance can be ensured.

In addition, although the above-mentioned example explained the example applied to a fluorescent lamp, the present invention is not limited to this, and can of course be applied to other types of discharge lamps.

[Effects of the Invention] As described above, according to the present invention, the upper case includes an upper case and a lower case forming a container body, an inner case, a base portion, and a board on which a high-frequency lighting circuit is mounted. Since the case is provided with a through hole and an engaging portion, and the lower case is provided with a discharge lamp connection portion, it is possible to provide a lighting fixture for a discharge lamp that is separate from the discharge lamp and is small and lightweight. This effect can be obtained. Furthermore, a lighting fixture for a discharge lamp is obtained in which the discharge lamp can be easily and reliably mounted and removed, the discharge lamp does not flicker, the lighting efficiency is high, and power consumption can be reduced.

In addition, by dispersing and mounting electronic components using multiple boards, it is possible to provide a compact and lightweight lighting fixture for discharge lamps.In particular, by housing the smoothing capacitor in the base, The effect is that size reduction and weight reduction can be achieved more easily.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing an embodiment of the present invention, Fig. 2 is a front view, Fig. 3 is a plan view, Fig. 4 is a bottom view, and Fig. 5 shows a state in which the base is removed. FIG. 6 is a plan view with the upper case removed; FIG. 7 is a plan view showing the state in which the second board is attached; FIG.
The figure is a circuit diagram showing one embodiment of an electric circuit according to the present invention. l: Container body 2: Upper case 3: Lower case 7: Engagement recess 11: Socket holder 14: Engagement protrusion 17: Connection mechanism storage part 20: Holding spring 21: Internal case
27: Rokinza 31: Rokin 3220 all 3
3: Smoothing capacitor 37: Second board 38: First board 40: Power supply circuit 41: Fluorescent lamp (discharge lamp) 4
2: Preheating circuit 43: Protection circuit 44: High frequency lighting circuit 45: Socket 45a: Engaging convex portion Patent applicant Jinbo Denki Co., Ltd. Representative Patent attorney Small 1) Osamu Figure 1, Figure 2, Figure 3, Figure 4 Figure 5

Claims (4)

[Claims] (1) An upper case and a lower case forming a substantially cylindrical container body, an inner case attached to the lower case within the container body, and an inner case that is rotatably supported by a predetermined angle and that receives electric power. The cap part is screwed and connected to the supplied light bulb holder, and the board is housed in the container body and is equipped with a high-frequency lighting circuit for lighting the discharge lamp, and the cap holder passes through the upper case. A discharge lamp characterized in that the lower case is provided with a through hole and an engaging portion that engages with the lower case and the inner case, respectively, and a discharge lamp connection portion to which a connection pin of a discharge lamp is connected is recessed in the lower case. Lighting equipment for electric lights. (2) The lighting fixture for a discharge lamp according to claim 1, wherein the discharge lamp connecting portion is provided with a holding spring that engages with an engaging convex portion provided on a side portion of the socket of the discharge lamp. (3) The board includes a first board on which at least some of the electronic components of the high-frequency lighting circuit are mounted and is provided with a through hole through which the discharge lamp connection part passes, and at least a preheating circuit for starting the discharge lamp. 2. The discharge lamp according to claim 1, further comprising a second substrate mounted on the lower case and held between the lower case and the inner case, and electrically connected between the first substrate and the second substrate. lighting equipment. (4) A part of electronic components of a power supply circuit is mounted on the first board, a smoothing capacitor constituting a part of this power supply circuit is built into the base part, and the smoothing capacitor and the electronic component are connected to each other by a lead wire. 4. The luminaire for a discharge lamp according to claim 3, wherein the luminaire is connected by a.