JPS61500086A - Flash tube using multiple flashes - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Flash tube with multiple flashes The present invention relates generally to emergency vehicle warning systems, and more particularly to emergency vehicle warning systems, and more particularly to one or more flash tubes that produce more than one flash of light in rapid succession This invention relates to an improved alarm device using.

Although not limited to the specific applications illustrated and described, the invention more particularly includes It has a flash tube of 30 to 9 QmS and is continuous at high speed. Flashing brightness recognition and warning light salience? Concerning a significantly improved alarm system. 2 Unfortunately, the flashes of C5 and higher are close together, so the observer sees only one flash. I can do it.

The warning beam is made as visible as possible to as many observers as possible within a given area. It is a well-known purpose of alarm systems to direct The flash tube is short but non- It has been found to be an extremely effective warning light that always produces a strong flash of light. general A strobe is a gas-filled tube that produces a short flash of light with a duration of approximately 200 μs. be able to occur. The well-known flash tube design produces an extremely powerful flash. However, it is an effective and easily possible method using conventional technology. It was not possible to improve brightness recognition.

Conventionally, in order to increase the conspicuousness of the warning light beam, short flashes of seven flashes were continuously generated. was. These devices ensure that the interval between flashes does not significantly affect perceived brightness. Therefore, it was not possible to significantly increase the brightness.

In the prior art, the holding time was much longer than the critical interval revealed for the present invention. It is common to use two flashes spaced approximately 150 m5 apart.

In 1902, the problem of short-term flash brightness was solved by Broca and Sursa (5 ul Zer) in a series of papers in which light rays stimulate the observer's eye. It was found that the duration of the scene affected the perceived brightness of the scene. This condition is a professional car. What came to be known as the Sursa effect, caused the flash to be difficult for observers to measure using laboratory equipment. It has been proven that there is a critical Franch retention time that appears brighter than when .

Later research confirmed the discovery of procursions. Par is Monpress (Pe rgamo'n Press) 1964, Volume 4, pages 61-76 Paper by M, S, Kat7. on Res, ).

, and by adapting some curves from the paper of Proforce and Surzu. The Kastle Zuichi effect was dramatically proven. Short flash of 0.05 seconds at 170 lux The light duration is 5 to 6 times brighter to the human eye than a steady state 170 lux beam. It turned out that it looked ugly. In this way, two flashes are generated in a short holding time in the critical range. Then, the high-intensity light can be made to appear even stronger and brighter, and after that period, the light will Enhanced apparent brightness without loss.

Therefore, two or more flashes can be used in rapid succession to improve brightness perception. It is an object of the present invention to.

Two or more strobe flashes are generated and visible in one time without a procursion. It is another object of the present invention to increase the brightness and conspicuousness of the warning beam. Ru.

Drive the flash tube to flicker fuse two or more frequencies higher than the same wave number. It is also an object of the present invention to generate more cascading flashes.

The appearance of the alarm device is to increase the brightness above and generate light that is easier for the observer +C to see. Both are objects of the present invention.

For these and other purposes, brightness-enhanced flashes are used to increase the viewer's perception of the warning beam. An improved flash tube system that takes advantage of the procursor effect to achieve This is achieved in accordance with the present invention which provides an arrangement. According to the effect of the present invention generated from a flash tube with a flash retention time of 60 to 90 m5. by using two or more flashes in rapid succession. The interpulse interval Ω′ is greater than or equal to Ω′! Since the two flashes are within the critical range, the two flashes are This results in an apparent brightness that is 5 to 6 times higher than that of a steady light beam of the same illuminance. flash frequency is higher than the so-called ``flicker fusion frequency'', so two flashes become one flash. It looks like.

In this way, the present invention uses a standard flash tube to produce multi-pulse flashes and moving reflections. It is possible to obtain a greater perceptible luminance than with prior art devices using radiators. Other objects of the invention, together with other features contributing thereto and advantages arising therefrom, include the same. The same reference numerals indicate corresponding parts throughout. It will be clear from the following description of the example, where FIG. An electrical circuit diagram of an embodiment of the present invention, Figure 2 shows the timing diagram showing the typical operation of the circuit in Figure 1. Activate one or more flash tubes to increase the intensity by 5-6 times. Embodiments of circuits and methods are presented. Using many similar circuits and configurations However, the circuit shown in FIG. 1 represents one technique for achieving the objectives of the present invention.

Two or more short flashes from the flash tube can be generated during a selection period to form a single flash. The present invention can be improved using other circuits' or devices, such as increasing the apparent brightness. It is also within the scope of the present invention to achieve results.

In accordance with the present invention provided by the circuit of FIG. 1, the flash tube of FIG. They are arranged to produce two or more flashes at consecutive intervals of 90m5. of the present invention The warning light device employing this technology has a long retention time in the range of approximately 60 to 90 ms. approximately 5 to 6 times brighter than the same lumen beam with constant output, depending on the I realized that I could see it. Since the flashes from the flash tube of the present invention are very close together, Therefore, it appears as a single flash with a retention time approximately equal to the interval between flashes.

FIG. 1 will be explained. The flash lamp 10 includes a contact base (not shown) and Flash tube mounted on the main body 12. Transformer 14 and capacitor 16? It is becoming more and more.

The flash tube 12 includes a first electrode 20, conveniently shown as an anode, and a cathode, conveniently shown as an anode. A second electrode 22 shown as a band and a metal band (not shown) extending from the band. It can be a conventional flash tube with a trigger electrode 24. I don't restrict it Flash tube 12 shall be General Electric model FT-1060. Can be done.

Transformer 14 is typically a miniature transformer, including but not limited to Siemens ZS. -1062 transformer. Capacitor 16 is preferably a disc set. It is a ramic capacitor, and although there are no restrictions, it can be used as a sprag 5 GAS-810 condenser. It can be a capacitor.

A conductor 30 connects the anode 20 to the conductor 32 of the capacitor 16 . The conductor 34 is connected to one side 36 of the transformer primary 38 . Conductor 40 transforms voltage Connect the other side 40 of the transformer primary side to the ground terminal of the lamp 10 and one side of the transformer secondary side 42. A conductive wire 44 then connects the trigger electrode 26 to the other side of the transformer secondary 48. conductor wire 45 connects the subsequent element to the ground of the power supply PSl.

The cathodes of a pair of silicon controlled rectifiers 1scR] and 5CR2 extend from the conductor m30. They are connected to each other by conductive wires 46 and 48. 5CR1 and 5OR2 a The node is a conductor with diodes CR] and CR2 in series with 5CR1 and 5CR2. They are connected to the power supply PS1' via @50 and 52, respectively. flash A conductor @54 is connected between the conductor 50 and the conductor 45 of the capacitor C] and the conductor C2, respectively. a.

54b and 56a, 56b.

Keitoro 0 and 62 of 5CR1 and 5cR2 are each timed by transformer 66. is connected to the programming circuit 64. Timing circuit 64 is made by National Semiconductor , model LM555, or the like.

In operation, the power supply PS1 is connected to the circuit through the diodes CR1 and CR2 during the period t]. Charge capacitors C1 and C2 to the desired energy value. At the end of time t1, tie A positive rising edge occurs at terminal 1 of the timing circuit 64, making SCR conductive. . When 5CR1 force 1 conducts, a positive pulse is generated on capacitor 16 and a flash is generated. The tube 12 is ignited to discharge the capacitor C. Time t2 (procurement time) After (period), a negative edge occurs at terminal 1 of the timing circuit 14 and 5CR2 conduction. Flash tube 12 reignites, discharging capacitor C2. Ko capacitor C] and C2 discharge in approximately 2 ms to limit the minimum value of period t2. .

For illustrative purposes, a table giving examples of energy values and time intervals issued by the circuit of FIG. A timing diagram is shown. Using other energy values and time intervals, tl and t2, 7 runci tubes 1 within a period equal to the critical range of approximately 30-90 ms according to the 2 can also be flashed sequentially, and the optimum brightness is generally in the middle of this range. (In Figure 2 j, the timer 64 is 75 m5. During the period t2, an output of 5■ is generated. Both capacitors C1 and C2 are connected to diode C It should be possible to charge to a voltage of 450μ via P11 and CR2.

The circuit is then approximately 2mS apart within the critical range by a period of approximately 75m5. A voltage of 450 V is applied between both ends of the capacitor 16 for a period of time to produce two continuous flashes of light. Add. Next, a flash of light occurs at a frequency higher than the ``flicker melting frequency'' and lasts for a long time. It appears to be a single flash with a duration of 75 ms and a perceived brightness 5 to 6 times the normal brightness. , thus increasing the salience of the warning beam.

Flashlamp 12 operative in accordance with the present invention may be used in addition to any alarm device of suitable design. It is obvious that it can be used in conjunction with similar flash lamps. disclose here The invention also provides for two or more flashes as long as the time interval between flashes is within 60-9 Oms. The purpose of the invention is achieved by flashing a strobe for a continuous flash of be able to.

Although the present invention has been described with reference to embodiments, it is within the scope of the invention to be understood by those skilled in the art. Please be aware that you may make various changes or replace components with equivalent products. stomach. Furthermore, within the essential scope of the invention, particular circumstances or materials may be appropriate to the teachings of the invention. Various f6 corrections can be made to match. Therefore, the present invention (one best practice) There is no intention to be limited to the specific embodiment disclosed as a mode of implementation, but within the scope of the claims. is intended to include all embodiments.

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Claims (11)

[Claims] 1. a flash lamp device; a circuit device connected to said lamp device for triggering a short duration flash; , The circuit arrangement causes the flash lamp arrangement to operate during a time interval of approximately 30-90 mS. a flash lamp including a device for triggering at least two consecutive flashes at a location; Device. 2. The flash lamp device according to claim 1, wherein the flash lamp The pump device includes a flash tube having an anode, a cathode, and a trigger electrode. Flash lamp device. 3. The flash lamp device according to claim 1, wherein the circuit device is A flash lamp device including a timer device for triggering continuous flashes. 4. The flash lamp device according to claim 1, wherein the circuit device is a pair of capacitors connected to the flash lamp; A flash lamp device that triggers the continuous flash by continuously discharging the light. 5. The flash lamp device according to claim 4, wherein the circuit device each further includes a pair of silicon-controlled rectifiers connected to said capacitor; a flash that continuously conducts the rectifier to discharge the capacitor on a continuous basis; Yurump device. 6. The flash lamp device according to claim 5, wherein the circuit device is A flash lamp device including a timer device for controlling the conduction period of the rectifier. 7. a flash lamp having a flash tube that generates flash; connected to the flash lamp, and two or more A device that generates continuous flashes of light A flash lamp equipped with. 8. In the flash lamp according to claim 7, the continuous flash includes one light beam. A flash lamp that appears as a flash of light 9. The flash lamp according to claim 7, further comprising a series of the two A flash lamp equipped with a circuit device that generates a flash of light greater than or equal to 10. The flash tube produces short duration flashes, with approximately Some of the flashes are flattened as two or more consecutive flashes during a period of 30 to 90 mS. A method for enhancing the apparent brightness of a flash tube comprising the step of flashing. 11. 11. The method of claim 10, wherein said A method of enhancing the apparent brightness of a flash tube including the step of generating a continuous flash of light.