KR850000204Y1 - Fluorescent lamp device - Google Patents

Abstract

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Description

Fluorescent lamp device

1, 2, 3, 4, and 5 illustrate an embodiment of the present invention.

1 is a front view showing the appearance of a fluorescent lamp device.

2 is a cross-sectional view.

3 is an exploded perspective view.

4 is a diagram illustrating a lighting circuit.

5 is an operating characteristic diagram of a ballast composed of a static characteristic thermistor,

6 and 7 show a modification of the ballast,

6 is a cross-sectional view of the main portion.

7 is an exploded perspective view.

The present invention relates to a fluorescent lamp device that can be used in place of incandescent bulbs.

Recently, as energy conservation measures are greatly proposed as a social request, development of power saving lamps is required in the light source field. Fluorescent lamps, however, have superior light efficiency (Im / w) compared to incandescent bulbs, and are advantageous over incandescent bulbs as power-saving light sources. Therefore, in recent years, the development of a lamp that can be fitted to the screw threaded socket in place of the incandescent lamp by mounting a direct fluorescent lamp frame in the screw threaded clasp.

In general, however, fluorescent lamps require a lighting tube as a starting aid, and at the same time, a ballast is required to maintain stable lighting discharge. Therefore, when fluorescent lamps are mounted in sockets for incandescent lamps, the lamp tube or ballast shall be maintained as an integral unit with the lamps. However, since ballasts generally use inductance, they tend to generate heat in accordance with current limitations, and since light tubes are equipped with thermally active switches, their operating characteristics are likely to be affected by ambient temperature conditions. Therefore, when the lighting tube and the ballast are provided in close proximity to each other, the lighting tube may be affected by heat dissipation of the ballast, thereby closing the contact during lamp lighting, causing the lamp to turn off.

In order to prevent this, the lighting tube needs to be arranged in isolation from the ballast. Therefore, while maintaining the straight fluorescent lamp in the outer tube, a clasp is provided at one end of the outer tube and a cap is attached at the other end. The structure which accommodates a lighting tube in the cap and accommodates a ballast in a clasp is considered.

However, in order to accommodate the ballast in the clasp, the ballast must be small and lightweight. Thus, the use of nonlinear static characteristic thermistors such as those having the characteristics of FIG. 5 as ballasts is contemplated.

It can be formed of ceramic-based crystals, and because of its small size and light weight, it is easy to accommodate in the clasp. In addition, the static characteristics thermistor has the following advantages in electrical characteristics. In other words, since the temperature of the lamp is low at the start of the lamp and the resistance value is small, a large current flows through the filament, thereby increasing the amount of heat generated and increasing the release of hot electrons, thereby facilitating discharge.

When the lamp is turned on, its own heat is generated by the large current at the start-up, so that its temperature becomes equal to or higher than the specific temperature t ₁ , and the lamp is supplied with a sufficient current for its discharge. When the current value changes due to the change in the power supply voltage, the heat generation amount changes accordingly, and the resistance value changes statically. Accordingly, the lamp current can be stably maintained by controlling the change in the power supply voltage by itself.

As described above, the ballast composed of the static characteristic thermistor is advantageous not only in configuration but also in electrical problems. However, since the static characteristic thermistor generates heat when the current flowing in itself is large, the resistance value is increased. Therefore, when the power supply voltage is greatly increased, the heat generation amount is large and the temperature rise becomes remarkable. As a result, the resistance value increases, but when the resistance value exceeds a certain value, the lamp current required to maintain the discharge cannot be supplied to the lamp, and the lamp is turned off.

The present invention has been studied in accordance with the above circumstances, and its purpose is to use a static characteristic thermistor as a ballast, to address the temperature adjusting member to a ballast composed of the static characteristic thermistor, and The present invention aims to provide a fluorescent lamp device that maintains good contact with the temperature adjusting member, regulates the temperature rise of the ballast, and does not turn off.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1, 2, 3, 4, and 5.

In the figure, reference numeral 1 denotes an outer tube, and forms a cylindrical shape with both ends open. The outer tube 1 is formed of a light transmissive material such as synthetic resin such as polycarbonate or glass, but may be a translucent material such as milky white. One end of the outer tube 1 is connected to the clasp sphere (2). The clasp sphere 2 is composed of a threaded clasp 3 such as E27 and an insulating connecting tube 4. As is known, the threaded clasp 3 is integrally provided with an eyelet terminal 7 by loading an insulating cement or an insulating adhesive 6 in a shell 5 formed in a male screw shape, In addition, the cover 8 having a large diameter is embedded in the insulating adhesive 6. In addition, a conductive hole 9 is formed in the insulation bonding crab 6. The insulating connecting tube 4 is made of a non-translucent or semi-transparent synthetic resin and is inserted into the opening of the cover 8. The connection tube 4 is integrally coupled with the cover 8 by the recessed portion 8a deformed by cutting a part of the outer surface of the cover 8 with a punch or the like. On the inner surface of the connecting tube 4, ribs 10 protruding toward the center direction at four locations perpendicular to each other. … Is formed. This rib 10... … The coupling groove 11 is formed on the upper surface at the same time the stop end portion 12 is formed at the inner end. Then, the outer tube 1 is inserted into the connecting tube 4, and the opening edge thereof is the rib 10... … Is inserted into the defect groove 11. In addition, the connecting tube 4 has an engaging click 13... … Is formed, and this locking click 13... … Is a coupling hole 14 formed in the outer tube 1. … The outer tube 1 and the connecting tube 4 are coupled to each other.

On the other hand, the cap 15 is deposited on the other end of the outer tube (1). The cap 15 is in the form of a cylinder having a bottom surface and is formed of a non-transparent or semi-transparent synthetic resin. The clamping end part 16 is formed in the inner surface of this cap 15, and the holding plate 25 mentioned later is clamped to this clamping end part 16. As shown in FIG. The other end of the outer tube 1 is inserted into the opening of the cap 15.

The locking click 13 of the connecting tube 4 is formed on the inner surface of the cap 15. … The same click as 17 (...) … Is formed, and this lock click 17... … Is a coupling hole 18 formed in the outer tube 1. … It is fitted in to maintain the coupling between the outer tube (1) and the cap (15).

Thus, the fluorescent lamp 20 is inserted into the outer tube 1. The fluorescent lamp 20 has the same structure as in the prior art, and bipost type clasps 21 and 21 are deposited on both ends of the bulb, and pins 22 and 21 are respectively provided on the clasps 21 and 21, respectively. (22), (22) and (22) protrude. In the bulb, filaments 23a and 23b are provided as shown in the circuit diagram of FIG. 4, and a predetermined amount of mercury and an inert gas are enclosed in the bulb. Both ends of the fluorescent lamp 20 are supported by the holding plates 24 and 25. One holding plate 24 is made of an insulating synthetic resin, and its outer diameter is matched with the inner diameter of the outer tube 1, and has corners 26 and 26 at its periphery.

These corners 26, 26 are ribs 10 formed on the connecting tube 4; … It is abutted and supported by the end surface of the.

The holding plate 24 has insertion holes 27 and 27 into which the pins 22 and 22 of the fluorescent lamp 20 are inserted. Therefore, the end of the fluorescent lamp 20 is coupled to the holding plate 24 by opening the pins 22 and 22 through the insertion holes 27 and 27 of the holding plate 24. The retaining plate 24 connects the corners 26 and 26 to the ribs 10 of the connecting tube 4. … The position in the axial direction is determined by abutting on the other hand, and the outer circumference of the holding plate 24 is restrained on the inner surface of the outer tube 1 to restrict the radial position. As a result, one end of the fluorescent lamp 20 is positioned in the axial direction and the radial direction via the holding plate 24, and mechanical holding is performed.

The other retaining plate 25 has an outer diameter that coincides with the inner diameter of the opening of the cap 15, and is adapted to match the pinching end 16 formed in the cap 15. The holding plate 25 is sandwiched between the end 16 and the other end opening of the outer tube 1 to fix the axial and radial positions. In this holding plate 25, pin insertion holes 28 and 28 are formed, and the pins 22 and 22 on the other end side of the fluorescent lamp 20 pass through. Moreover, the rotation stop grooves 29 and 29 are formed in the holding plate 25, and are fitted in the locking ribs 30 and 30 formed in the cap 15. As shown in FIG. Therefore, the other end of the fluorescent lamp 20 is regulated by the retaining plate 25 in the axial and radial positions and mechanically maintained. As a result, the fluorescent lamp 20 is positioned on the central axis of the outer tube 1 by the holding plates 24 and 55 at both ends.

Thus, the cap 15 is accommodated in the lighting tube 31 and the noise preventing capacitor 32 as necessary. These lighting tubes 31 and the condenser 32 are both supported by the holding plate 25. The support plate 33, 33, 34 is integrally formed in the holding plate 25, and the lighting tube 31 has these protrusions 33, () between the pair of support protrusions 33, 33. It is clamped using the elastic force of 33). Moreover, the capacitor | condenser 32 is fixed by winding the lead wire 32a or 32b to the projection 34. As shown in FIG.

On the other hand, the stabilizer 35 is accommodated in the clasp sphere 2 described above. The ballast 35 is composed of a nonlinear static characteristic thermistor having the characteristics as shown in FIG. Or it is obtained by carrying out trace amount addition of two or more types, and is formed in disk shape with ceramic crystals. The ballast 35 is formed of a ring 39 formed on each of the spring rests 36 made of a conductive plate. … The radial movement is prevented by this. The spring support 36 is opposed to the end face of the insulating adhesive 6 described above, and is normally pressed by the coil spring 39 accommodated in the through hole 9.

Reference numeral 40 is a lead wire made of a spiral that electrically connects the spring support 36 and the eyelet terminal 7.

Moreover, the terminal plate 37 is bent by the bending piece 41. … And a connecting piece 42, and the terminal plate 37 supports the temperature adjusting member 43. The temperature adjusting member 43 has a plurality of fins 44. … And the lower pin 44 is bent piece 41... … This bending piece 41... … Therefore, the temperature adjusting member 43 is engaged with the connecting piece 42 and is in surface contact. The shoulder of the temperature adjusting member 43 has ribs 10... Of the connecting tube 4. … It is caught by the stop end 12 formed in the. As a result, the spring support 36 is pressed by the coil spring 39 so that the spring support 36 is pressed in surface contact with the ballast 35, and the ballast 35 is in surface contact with the terminal plate 37. In addition, the terminal plate 37 is in surface contact with the temperature adjusting member 43. The temperature adjusting member 43 is supported by the rib 10 of the connection tube 4 by receiving the elasticity of the coil spring 39.

Reference numerals 45 and 46 are conductive codes and are guided in the axial direction along the outer surface of the fluorescent lamp 20 in the outer tube 1. On the other hand, the cord 45 is electrically connected between one of the pins 22 and 22 at both ends of the fluorescent lamp 20, and the other cord 46 is connected to one of the lead wires of the lighting tube 31 and the shell ( And 5) are electrically connected.

In addition, these codes 45 and 46 are adhered to the clasps 21 and 21 by adhesive tapes 47 and 47. Reference numeral 48 is a different code, which electrically connects the connecting piece 42 of the terminal plate 37 and the other pin 22 of one clasp 21 of the fluorescent lamp 20.

The fluorescent lamp 50, the lighting tube 31, the condenser 32, and the ballast 35 as described above have a circuit configuration as shown in FIG. That is, the filament 23a of the fluorescent felt 20 is connected in series with the ballast 35. In addition, the lighting tubes 31 are connected in series to the filaments 23a and 23b, and the lighting tubes 31 are parallel to the fluorescent lamp 20 at the time of lighting. The capacitor 32 is connected in parallel to the lighting tube 31.

The operation of the fluorescent lamp device according to such a configuration will be described.

When the power switch 50 is closed by inserting the clasp 3 of the fluorescent lamp device in place of the incandescent lamp (not shown) for the incandescent lamp, the voltage of the power source 51 is supplied to the lamp device. As the power source 51 is turned on, a current flows through the lighting tube 31, so that glow discharge occurs. This glow discharge heats and closes the bimetal switch of the lighting tube 31, so that the lighting tube 31 is closed, so that a preheating current flows in both the filaments 23a and 23b of the fluorescent lamp 20. When the bimetal switch of the lighting tube 31 is opened by cooling, a sudden current change occurs, so that a high pulse voltage due to kick voltage is generated, and this high voltage pulse is generated between both filaments 23a and 23b. As a result of the application, the fluorescent lamp 20 is turned on.

When the discharge is started in this manner, the discharge current flows, but since the voltage and the current at the time of discharge show negative (-), the current cannot be limited by the lamp 20 itself, and therefore the ballast 35 connected in series is provided. Current to suppress the stable discharge.

Therefore, when using the static thermistor having the characteristics as shown in FIG. Since the filaments 23a and 26b are heated to a high temperature, the amount of electromagnetic radiation is increased, and the filaments 23a and 26b are easily discharged. Therefore, even if the pulse voltage is relatively low, reliable discharge is achieved.

In addition, when the relay current flows in the start-up preheating process, the stabilizer 35 generates heat by itself and is heated to a specific temperature t ₁ or more to rapidly increase the resistance value. Therefore, since the current of the lighting circuit is suppressed and only the current necessary for the discharge of the lamp 26 flows, stable discharge is maintained.

When the power supply voltage rises during lighting, the current flowing through the ballast 35 rises, so that the ballast 35 generates heat by itself to regulate the current flowing through the lamp 20. In addition, when the power supply voltage decreases, the self-heating of the ballast 35 decreases and the resistance value decreases, so that the current value given to the lamp 20 increases. Thus, the lamp can maintain a stable discharge. By the way, for example, when the power supply voltage rises, the self-heating of the ballast 35 increases, but since the ballast 35 is in contact with the temperature adjusting member 43 via the terminal plate 37, the heat of the ballast 35 is increased. Is conducted to this temperature adjusting member 43.

The temperature regulating member 43 has a large heat capacity and a heat radiation fin 44... … Since the heat is dissipated by the stabilizer 35, its temperature rise is restricted. Thus, the ballast 35, for example, so maintained at a temperature less than that represented by a fifth-degree t ₂ suppresses an increase in the resistance value. That is, since the lamp current value necessary for the lighting of the lamp 20 is secured, the lamp is not turned off.

In this case, since the ballast 35 is pressed toward the temperature adjusting member 43 by the coil spring 39, the ballast 35 and the nose leaf spring 39 are kept in good contact so that a large contact area can be obtained. Since it is retained, the heat conduction from the ballast 35 to the temperature adjusting member 43 is surely made.

As such, the fluorescent lamp device includes the fluorescent lamp 20, the lighting tube 31, and the stabilizer 35 as an integrated unit. Therefore, the fluorescent lamp device may be replaced with an incandescent lamp and inserted into a socket. As it becomes possible to use without the need of), there is no functional problem as an alternative light source of the incandescent lamp.

In addition, since the fluorescent lamp device accommodates the lighting tube 31 in the cap 15 and the ballast 35 and the temperature adjusting member 43 in the clasp 3, the lighting tube 31 and the ballast 35 ) Is isolated so that the light tube 31 is not affected by heat.

In the above embodiment, as the temperature adjusting member 43, the plurality of heat radiation fins 44... … Although the present invention has been described, the present invention is not limited according to the shape of the temperature adjusting member, and is, for example, approximately the same as in the modifications of FIGS. 6 and 7. The member 60 of a shaped shape may be sufficient. 6 and 7, the pin 61 penetrates sideways to support the temperature adjusting member 60, and both ends of the pin 61 are insulated from each other with respect to the cover 8. It is attached by (62) and (62).

6 and 7 may not necessarily require the coil spring 39 as long as the pin 61 retains the elastic force that pushes the temperature adjusting member 60 toward the ballast 35.

As described in detail above, the present invention installs a cap on one end of the transparent or semi-transparent outer tube, and attaches a cap to the other end, accommodates a straight fluorescent lamp in the outer tube, and simultaneously turns on the light tube in the cap. And a ballast installed in the clasp, and the temperature adjusting member is delivered to the ballast. Therefore, since the light tube and ballast are isolated, the light tube is not affected by heat dissipation of the ballast. And since the ballast uses a static characteristic thermistor, it is small and light in weight, and is easily accommodated in the clasp. In addition, since the temperature regulating member is addressed to the static characteristics thermistor ballast, the temperature rise of the ballast is suppressed by this temperature regulating member, and thus, there is no increase in resistance of the ballast, and there is an advantage of preventing the lamp from turning off. In addition, since the stabilizer and the temperature adjusting member are elastically attached to each other by an elastic body, the contact between these stabilizers and the temperature adjusting member is kept well and the thermal conductivity is assured.

Claims (1)

A threaded tap for accommodating a straight fluorescent lamp in a light-transmitting or semi-translucent tubing, connecting a cap to a connecting tube at one end of the tube, and a light tube at the other end thereof, and a stabilizer member in the connecting tube. In mounting the iron, the ballast member is connected to the coil spring 39, the spring support 36 pressed by the coil spring, the static characteristics thermistor 35 connected to the spring support, and the thermistor. And a temperature adjusting member (43) connected to the terminal plate (37) sandwiching the spring rest and the terminal plate to radiate heat.