JPH0233895A - Apparatus for changing polarity of lamp of dc fluorescent lamp or lighting system periodically - Google Patents

Abstract

PURPOSE: To obtain a stable illumination whose life is long by generating a polarity signal at random by the polarity of the receiving moment of an AC power source, switching the polarity of a DC power source and supplying power to a DC fluorescent lamp. CONSTITUTION: In a DC power source 101 obtained by rectifying AC, the polarity is switched by a polarity changeover switch 102 and power is supplied to a DC fluorescent lamp 103. At this time, the polarity of the switch 102 is set at random by a free polarity signal setting device 104. Namely, the setting device 104 determines the polarity at random by the polarity of an AC power source of a receiving moment, arc noise or the clock pulse of the device itself. Therefore, probabilities generating positive and negative polarities become almost equal and consumption of the cathode of the DC fluorescent lamp 103 is reduced. Thus, a stable illumination making the most of the merit of DC and the long life are obtained.

Description

[Detailed Description of the Invention] Since the invention of fluorescent lamps, they have been widely applied due to their energy-saving characteristics due to their high efficiency and cold light. Currently, there are two types of fluorescent lamps on the market. are fluorescent lamps whose light bulbs are driven by AC power, and the former are the majority used in homes, factories, and public places. Although this method is cheap, the brightness changes caused by the AC power waveform pulses are not very effective even with the installation of a current limiter, and the efficiency is low, resulting in heat loss and noise, so DC fluorescent lamps cannot be used. Although it has good lighting stability, the cathode consumption on one side requires manual bulb direction change, which is very inconvenient, so this design plan mainly uses one polarity changeable DC fluorescent lamp or lighting system. and provides highly stable lighting functions,
At present, instead of the brightness periodic pulse formed by alternating current as a power source, which is harmful to the eyes as well as forming the drawback of one-way wear of the lamp cathode with a fixed direct current power source, the various embodiment circuit blocks thereof will be described below.

FIG. 1 is a block diagram of a single lighting fixture periodically variable DC fluorescent lamp, which mainly includes the following:

One DC power supply device 101 is used to generate DC power to drive the fluorescent lamp, and this DC power includes direct rectification filtered waves, or is a DC power after high frequency rectification with improved frequency, and has one polarity. The changeover switch 102 is an electric type Reine, which is composed of a solid-state circuit, and is used to command the setting of the device by a free polarity signal, and can switch between the DC power polarity and both sides of the bulb to provide front contact or opposite contact, and one fluorescent light bulb, Lighting equipment 1 consisting of a light bulb base, starter, current limiter, connecting lead wire, lamp case, etc.
03. A free polarity signal setting device 104 is a dummy number generation device, which can be set according to the instantaneous polarity of the power supply at the moment of power transmission, or by arc noise or its own clock pulse (CLO
CK) forms an undefined high or low signal to drive the polarity converter switch and set the positive or negative polarity at both ends of the bulb, permanently indicating that the device has a high or low signal. The probability of a signal appearing is roughly equal.

FIG. 1A shows an example of this free forced signal setting device. In the example shown in FIG. 1A, N100 and Nl0I are magnetic spring relays (approximately IMS
), the diodes D100 in different directions,
DIOL is connected in series, and the flywheel diode D
120. It is connected in parallel to D121 and then to the AC power supply, and its normally closed contacts are connected in series to the other coil to form an interlock, and D100 has another normally open contact and is a polarity exchange switch (relay N102). If the M terminal is positive at the instant of power transmission, N100 will instantly receive power and close, and its normally closed contact will cut the line of Nl0I, and at the same time its normally closed contact will change the polarity. Drive the replacement relay to close it and make it output the opposite polarity to the fluorescent lamp.Conversely, if N101 is closed, the polarity switching relay will not receive power, and in its normally closed contact state it will output the opposite polarity to the above. When outputting and transmitting electricity, N100
Since the power reception rate of N101 and N101 is the same, both ends of the DC fluorescent lamp fixture receive positive and negative power. Similarly, the free polarity setting device and polarity exchange switch shown in Figure 1 also have one double knife. The knife period selection switch 105 is replaced by the same knife period selection switch 105, which is configured by an electric relay or a solid-state circuit, and can be turned on or off from manual operation control or period setting.
When setting off once or a number of times, the transmission polarity for the DC fluorescent lamp fixture is changed. Figure 1B shows an example in which the polarity is switched at the cycle of a one-knife type switch. The coil of the knife cycle switch is paralleled to the power supply side, and once the power supply is opened and closed, both knife contacts cycle at the same time and advance one step, that is, change the input polarity to the DC fluorescent lamp 103.

The free polarity setting device shown in FIG. 1 is also taken a step further by using a circulating timed polarity switching device 106 to create a polarity that switches both ends of the bulb when a transmission load command and a set time are received, and the polarity can be switched during lighting. In order to prevent this, the condition of ANDing the time-determined switching signal and the lamp control off signal is used as the enforcement condition for the polarity of the fluorescent lamp fixture, and periodic direct current of unequal polarity is applied to both ends of the bulb.

FIG. 1C shows the side of the circuit having the timing ramp switching receiving polarity function, where CLIOI is used to generate the cyclic timing switching signal.

Its normally closed contact is connected in parallel with the normally open contact of the polarity exchange switch (relay) N102, and then in series with the coil of the polarity exchange switch, and then in parallel with the power supply. The fluorescent lamp 103
The receiving polarity is such that the normally open switch of N102 is always open, and the normally closed switch is always closed and then opened again.
When l reaches the set time, its normally closed contact is disconnected, and the parallel normally open contact of N102 is closed, so the state continues until the AC power is disconnected (lights out), and then The state when one of the lights is on presents the opposite situation,
The above-mentioned free polarity setting device can also be operated and controlled for polarity exchange by the manual operation control circulation cycle switching polarity switch 107, and can be turned on and off by manual operation instead of the free polarity setting device and changeover switch in FIG. It has a switch 107 which has a periodic circulation and has the same number of unequal polarity states in the on state during the circulation for each machine, and changes the fixed polarity input DC to both input terminals for the DC fluorescent lamp set and changes the polarity. It can convert the power transmission, ensure the positive and negative polarity between the two electrodes of the bulb, replace the manual operation and eliminate the troublesome and incomprehensible drawbacks of changing the direction of the bulb, this switch has at least one set of positive direction ON - off-opposite direction ON-OFF continuous rotation switching type, or push-key periodic type switches, including switches with grasp forced sequential polarity switching cycles, as shown in FIG. 1D:
This is an example of a periodic switch that has positive and negative polarity alternation between both electrodes of a light bulb.In this circuit, the switch with the above-mentioned forced order polarity switching circulation is used as a polarity changeover switch,
Switch - When the switch is on during two mechanical cycles, the state of sending DC electricity to the fluorescent light fixture with unequal polarity is equal, so for long-term use, the positive and negative polarity times are confusing. It is almost equivalent to discuss.

By the proof of each of the above embodiments, this design makes a selection by sending the DC power polarity to the DC fluorescent lamp at the moment of feeding AC electricity, and there is no brightness pulse when inputting DC, so the design Because it does not hurt the eyes and has a free signal setting device,
During long-term use, both sides of the bulb have a positive and negative rate, which prevents aging on one side of the bulb. This polarity changeable electrical supply device with manual or circulation timed automatic changeover switch can also be used as a fixture for integrated lighting, forming a polarity changeable electricity supply and forming a single polarity changeable power supply lighting system. The lighting equipment sets that constitute and supply electricity include fluorescent lamp sets driven by pure DC power or high-frequency pulsed DC, as well as other lighting equipment with DC loads, such as incandescent lamps or mercury lamps or air-filled discharge lamps, arc Applicable to lamps and other lighting equipment loads with undefined polarity that can be applied to DC.

Also, since the DC fluorescent lamps mentioned above must be subjected to unequal polarity, their starters can be configured using the traditional two-set anti-parallel method, or manually pressing a normally open pushbutton to configure the starting function, as well as the following novel methods: It can also be achieved by other means.

FIG. 2A shows an embodiment in which both sets of bimetallic thermal electrodes are constructed, with electrodes 201 and 202 in the figure generating heat and bending into the other electrode during unequal output polarities. Continuity is established, and due to further continuity, heat generation is stopped, and the fluorescent lamp is restarted.

Figure 2B shows a method in which both sets of bimetallic thermal electrodes and fixed electrodes are arranged in opposite directions in parallel in the same sealed structure. The moving electrode 203 is installed on the fixed electrode 206, and the relationship between the two is as follows.
When the thermal electrode 203 bends due to heat, it shoots the other fixed electrode 206, and in the case of another polarity, when the other set of thermal electrodes 205 bends due to heat, it shoots the other fixed electrode 206. 204 and completes the unequal polarity start-up by the above operation, Figure 2C shows an example of adding hot bridge commutation with a traditional starter. By combining with , the starter always receives the same polarity in case of unequal polarity, and in actual production, the above bridge type rectifier can be a device or installed inside the starter.

A starter applicable to the above-mentioned unequal polarity power supplies will facilitate the design and implementation of the present invention.

In summary, this design discloses a method and apparatus for periodic lamp receiving polarity of a DC fluorescent lamp or lighting system, which can eliminate the lamp periodic flickering reduction currently driven by AC power, and at the same time It eliminates the drawback of one-sided cathode wear of DC fluorescent light bulbs, improves the quality of illumination, guarantees eye health, has a novel design, and has reliable functionality, so we request that it be reviewed in accordance with the law. .

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a single luminaire periodically variable polarity DC fluorescent lamp. FIG. 1A shows an embodiment of this free polarity signal setting device. FIG. 1B shows an embodiment in which the polarity is switched at the cycle of both knife-type periodic changeover switches. FIG. 1C is an example of a circuit having a time-determined switching light receiving polarity function. FIG. 1D is an example of a periodic switch with alternating positive and negative polarity between the poles of a light bulb. FIG. 2A shows an embodiment in which the thermal electrodes are made of one set of bimetals. FIG. 2B is an embodiment of the method in which both sets of thermal electrodes and fixed electrodes made of bimetal are provided in opposite parallel arrangement in the same sealed structure. FIG. 2C is an example of a traditional starter with hot bridge commutation. F old, 1B FIG. A FlG. D Procedural amendment (method) Indication of the case Patent application No. 182749/1982 Name of the invention Relationship with 111 cases of DC fluorescent lamps or persons who amend the cycle changing device of light bulb receiving polarity of lighting system Patent applicant Quiver Yang Procedural Amendment (Method) % Formula % 1. Indication of the case Japanese Patent Application No. 182749/1983 2. Name of the invention: DC fluorescent lamp or lighting system lamp receiver polarity cycle changing device 3゜ Amendment case and Relationship between patent applicant Thai-Ber Yang Date of amendment order: October 5, 1985 (Despatch point: October 25, 1988) Drawings to be amended (Figure 2A, Figure 2B, Figure 2C) 5. Date of amendment order (Despatch phone: 271-3751 (Representative) January 6, 1999 January 31, 1999) 7゜Amendment details as attached (Engraving 1.2.j, E No change in content) )°゛ ・・・ゝ− j

Claims (8)

[Claims] (1) Receiving polarity of one cycle-changeable light bulb The main components of a fluorescent lamp driven by direct current are: one DC power supply device; used to generate DC power to drive the fluorescent lamp; Direct current includes direct rectification filtered wave, or DC power after high frequency rectification to improve the frequency, consists of one polarity changeover switch; electrical relay or solid state circuit, used to set the device by free polarity signal, direct current Switch the polarity of the power supply to make front contact or opposite contact with both sides of the bulb, lighting equipment consisting of one fluorescent light bulb, bulb base, starter, current limiter and junction lead wire, lamp case, one free polarity signal. Setting device: A random number generator that changes polarity by forming an unstable high or low signal according to the power supply instantaneous polarity at the moment of power transmission, or by arc noise or its own clock pulse (CLOCK) signal. Drive the switch and set the positive and negative polarity of both ends of the bulb, in terms of permanence, the high and low signals will appear on this device and the confusion rate will be somewhat equal. The above main structural devices are formed at the moment of sending AC electricity,
The free polarity signal setting device generates a temporary signal, the polarity operation control AC switch exhibits one relative stable state, inputs the DC power into the fluorescent lamp set, and has the free signal setting device, so it can be used for long-term integration. A period changing device for the polarity of a light bulb in a DC fluorescent lamp or lighting system, which has a slightly equal chance of turning both sides of the light bulb positive or negative during use, and prevents aging on one side of the light bulb. (2) It is also possible to replace one double-knife rotation changeover switch, and this double-knife rotation changeover switch is constituted by an electric relay or a solid state circuit, and the operation control light switch can be operated from manual operation control or cycle setting. 2. The device for changing the cycle of the receiving polarity of a light bulb according to claim 1, which is capable of turning on and off once or by changing the transmitting polarity of the DC fluorescent lamp set when setting the number of times. (3) Going one step further, from one circulation time determination switching device,
The polarity is set to switch both ends of the bulb when there is a power transmission load command and a setting time, and in order to prevent switching during lighting, the condition of AND of both this time-determined switching signal and the off signal that controls the lamp is set for fluorescent lamps. 2. The cycle changing device according to claim 1, wherein as a condition for executing polarity switching for a set, direct current having different polarities is periodically applied to both ends of the light bulb. (4) Going one step further, the polarity switch can be changed manually, and the fixed polarity input DC is changed to the input terminal for the DC fluorescent lamp set, and the polarity can be changed for power transmission, replacing the trouble of manually changing the direction of the light bulb. This switch has at least one set of positive ON-OFF-
2. The period changing device according to claim 1, comprising a continuous rotary switching type switch or a push key rotation type switch with opposite direction on-off, and having a switch with ordered forced polarity switching cycle. (5) It is also possible to change the polarity of the integrated lighting installation by means of a polarizable electrical supply (manual or timed automatic switching, or by polarity switching circulation with free polarity or forced order). (switches) constituting a lighting system with a power supply whose polarity can be changed by operation control, as well as direct current fluorescent lamps, incandescent lamps, mercury lamps or air-filled discharge lamps, arc lamps and other lamps with undefined polarity applied to direct current; The period changing device according to claim 1, which drives a set load. (6) Construct a thermal electrode with one bimetal set,
Claims 1 to 5 include generating heat, bending to another electrode, conducting, and stopping heat generation due to conduction and returning to drive the fluorescent lamp in case of unequal output polarity. The cycle changing device according to any one of the above items. (7) Both sets of thermal electrodes and fixed electrodes made of bimetal are provided in the same sealed structure and are arranged in opposite directions in parallel. In any case, when the other set of thermal electrodes bends due to heat, the fixed electrode in the opposite direction is shot to complete activation in unequal polarity. The device according to item 1. (8) An example of adding hot bridge commutation with a traditional starter, which combines the traditional starter with bridge commutation, so that the starter always receives the same polarity in the case of unequal polarity, and the actual production 6. Device according to any one of claims 1 to 5, in which case the bridge arrangement can be placed externally or installed inside the starter.