TWI232992B - Camera - Google Patents

Abstract

A camera that stops charging before flashing for preventing voltage-down can still flash if the strobe is selected. A trigger condenser 51 is connected in a step-up circuit 41. The trigger condenser 51 is connected with a discharge resister 45a and a delay-condenser 45b in parallel series. When the shutter leaves starts to open/close to respond the pressing of a release button 7, the charging of the step-up 41 is stopped by using a forbidding-transistor 49. When the step-up 41 stops, the trigger condenser 51 discharges through resistor 58, discharging resistor 45a. Meanwhile, during the interval that a synchro switch 27 turns on, the trigger condenser 51 is maintained on the voltage for flashing requirement by the delay-condenser 45b that is discharged through the resistor 45a.

Description

1232992

[Technical field to which the invention belongs] Judge = It is related to a photo with a flash. [Previous technology] μ Most of the time, the flash is emitted before the main capacitor pre-light is shot. However, there are shots. Therefore, Kaiping 8-304888 should turn on the flash. When the main capacitor and the light-emitting selection capacitor are discharged, the prohibited cameras are equipped with a flash, which can be used to shoot the same light during flash shooting. Charging voltage, so generally, the charging switch is turned on first to make the boost circuit operate. There are times when a user does not want to, but accidentally implements a flash device with a known beta (such as the Japanese Patent Publication No.), even if the main capacitor has been charged, whether to choose or not, as disclosed in JP-A-8-304888 The described flash circuit is a switch on the discharge circuit of the trigger capacitor that is charged simultaneously by the booster circuit. The trigger is prevented by turning off this light-emitting selection switch to prevent the generation of a trigger voltage to start the flash light emission, and the flash light is emitted.

f 'The charging switch and the light-emitting selection switch are made into a three-point common switch, so that one switch can be used for charging and the presence or absence of flash light can be selected. This technology is known (such as Japanese Patent Laid-Open Publication 1 1 -64940). In addition, a series circuit composed of a light-emitting selection switch and an impedance is connected in parallel with the trigger capacitor, the light-emitting selection is opened, and the impedance is made to discharge the charge of the trigger capacitor. II. This is to stop the flash light. This technology is known (such as Japanese patent (Early published Japanese Patent Application No. 2001-25 No. 5573). However, when the light-emitting selection switch as described above is provided, the number of parts is increased, and the manufacturing cost is increased. And if you use 3 like above

1232992 V. Description of the invention (2) Only when the increase of the switch of the contact, the other side of the lamp pressing device to the discharge resistance, the touch required to trigger the light emitting impedance of the electric flash light is ON (OFF) The cost rises. In that case, the low-manufacturing road has become a face, a flash resistance. Capacitive electricity. On the contrary, the electric component voltage can be added to this. Although it can be costly, very complicated light lamps will be installed here. The flashover will continue depending on the location, and the electrical resistance can be selected to inhibit the use. However, there is also a light lamp installed to discharge Use the boost voltage to trigger the flashing, and then flash the number of parts emitted by the light selection function. For the flash of the 3-contact switch, new parts have to be added. Connect the capacitor in parallel with the trigger capacitor. When the booster circuit stops the impedance and discharges, so the circuit can be forbidden, the capacitor should be charged to obtain the flash light. Therefore, in this structure, the charging switch can be turned on / off without the presence of light 'and it will not cause manufacturing. However, in the booster circuit, a larger current. Rewinding is performed manually, but the camera with automatic rewinding will be activated at the time of the feed motor for flashing ’. Therefore, when the output voltage of the power supply battery is significantly reduced like this, it is reset. Although the simple camera that will produce a photo just after the flash light is emitted will not cause any problems. After shooting, when driving the film feed to the booster circuit and the feed motor at the same time, the output voltage will be significantly reduced. The microcomputer built into the camera will be taken seriously

The charging action of the booster circuit is best to stop the driving of the motor before shooting, and to read the negative film feed after the ten-shot shooting is completed. The above-mentioned discharge impedance: open the charging action. However, there is a pass point that triggers the capacitance of the capacitor :: So :: When the action is prohibited

1232992 V. Description of the invention (3) ---- When the blade is flashing and shining, there is a problem that it cannot emit light. [Summary of the Invention] Based on the above considerations, an object of the present invention is to provide a camera that can reliably perform flash light emission without increasing the number of parts even if charging is stopped before shooting. In order to achieve the above object, the present invention provides a camera including: an operation member, which can be switched between an open position and an external operation; a signal output inhibiting means, in response to the opening and closing action of a fast-moving movie in response to a release operation , And output a charge inhibit signal. The parallel device includes a boost circuit that charges the main capacitor and the trigger capacitor when the flash operation member is on and off, and does not operate when the flash operation structure is set to two to stop the main capacitor and the The charging of the trigger capacitor is not limited to the use of a charge prohibition signal to force the boost circuit, and a discharge delay means. When the boost is charged using the prohibition means, the i is less in the opening and closing action of the shutter blade until synchronization. Signal p :; Light to Dore: Hold the t electrical voltage of the trigger capacitor to be able to flash and emit light-can be reduced to ^ '. Then, the trigger capacitor is discharged until the flashing light-emitting electricity is delayed in parallel in the above-mentioned camera. The negative film used for the opening and closing action in the above-mentioned camera is output to Wanhu. The discharge delay means is composed of a trigger capacitance and a discharge impedance. ‘Prohibition signal output means is to stop the charging prohibition signal when the shutter blade is sent

To make the invention and other objects, features and advantages of the invention more obvious. 1232992 5. Description of the invention (4) _ 1 = the following y cite the preferred embodiment, and in conjunction with the accompanying drawings, make a detailed description [implementation Method] The appearance of photography = = is shown in Figure 1. * Side window? , Net stop sense ° There are shooting lens 2, the counterpart of the finder 6. = Light section 4, flash operation member 5, lens grille operation member. The charging of the light is finished, and there is no work. Furthermore, two / ++ morning work members 9 are stuck on the side of one side of the camera, and the film operation member 10 for forcibly winding the negatives in use back to the patrone. Enter one: f button 7 is' can be pushed to shallow and half-push position, and can be pushed to the full-push position, when button 7 is released to the full-push position, the opening and closing action of operation ^ 5 is closed. And shooting through the shooting lens 2. The flash can be operated from the off position (GFF) shown in the off position, and the flash is allowed to emit light. When the charging operation is performed with two flashes, the flash is prohibited. When the flashing operation member 5 is in the on position, the charging operation is stopped in the closed position. The photo is taken at the LED 11 and the LED U (see FIG. 2). Red-eye prevention The light coming from the flash light-emitting part 4 is directed; the V-photograph is the red-eye prevention application 1 12996pif.ptd page 10 1232992

τκτη 9 is provided behind the charging display window 8 for charging completion display (see FIG. 3). This LED12 is turned on when charging is completed during the operation of the booster circuit as described later. Wide Road Day In this camera, a 1 3 5 type film is filled. The filling of the negative film is performed by the operation of the back cover operating member g, and the back cover, which is the back cover, is opened. In addition, this camera system rolls all the negatives to the camera-side reel (叩 0〇1) after loading, and rolls it into the cassette in a grid-by-grid ((: 〇1 ^) after shooting, It is a prewind method. When pressing the roll film operating member 10, all the negatives can be rolled back into the cassette. The main structure of the camera is shown in Figure 2. The microcomputer 15 controls the negatives. The microcomputer i 5 also serves as a prohibition signal output means for outputting a charging prohibition signal. Each electrical circuit of the camera including the microcomputer 5 is driven by a battery 16 as a common power source. This battery 1 6 'For example, use two No. 4 alkaline batteries. The red-eye prevention led 11 is directly driven by the microcomputer 15'. The light is turned on when the release button 7 is pushed to the half-press position as described above. Under the control of the microcomputer 15, it is driven by the driver 22, and transmits this rotation to the feeding mechanism. This feeding motor 2 is a person who can rotate in both forward and reverse directions. The feeding mechanism 23 is by the camera side Reel, joined to the loaded cassette The other part of the shaft and the rotation direction of the feed motor 21 transmit the rotation to the fork or the gear train of the reel. When the feed motor 21 rotates forward, the rotation is transmitted to the feed mechanism 23 to On the reels. In this way, prewinding of the negatives is performed.

1232992 V. Description of the invention (6) And when the feeding motor 21 reverses, this rotation is turned to the fork, whereby the 'Kakun's reel is conveyed by the rotating mechanism 23 and the spot, diarrhea, etc. are set on the feeding mechanism. Get the network and broadcast the negatives into the card E. (perfratat) is formed with sprockets that are connected, closed, and the bottom is based on the bottom edge of the film. When this sprocket is passed, when the bottom, ,,, and ° are reached and the driven sprocket rotates, it will return to m circle. The β film was given a 1-block (c_) component. The shutter device 2 4 series went back to release the shutter blade. In this example, ^ t n presses the operation and opens and closes quickly and simply. t respond to solution 4 2 using a so-called bounce-type charging position to move toward the release direction? The door drive is closed. The aforementioned sprocket is rotated to make the film return to the charging position. The shutter device emits light. Ϊ́25 由 25: by the flash discharge tube that emits the flash, the flash:;: ί, Γ, a capacitor for charging The main capacitor's step-up electrical synchro switch 27 \ first. —Polar body (LED) 12, flash switch M, flash; = =: Linkage of component 5 is turned on / off. When 22 is the same as 8: 2 is = Synchronous flashing is turned off, and the charging action is stopped at this time. 『Sending: light switch 26 is: = 2; Yes; in the state that the shutter blade of the shutter device 24 has finished the shutter, the word is 12996 pif when the synchronization switch 26 is off. ptd Page 12 1232992 5. Description of the invention (7) Light is emitted. The flash device 25 series stops charging operation by inputting a charging prohibition signal from the microcomputer 15. The microcomputer 15 is from the time when the shutter blade opening and closing operation is started until the Until the next film to be photographed is sent, the charging prohibition signal is output. In this way, the charging operation of the main capacitor during film feeding can be prohibited, and an excessive current flowing from the battery 丨 6 can prevent the output of the battery 16 The voltage drops, so The computer 5 does not need to be reset. In addition to the “comma” transmission, the charging prohibition signal can also be input when the feed motor 21 and the like in the pre-roll are operating. To lamp device 25.

The microcomputer 15 is connected to the SHC switch, the S1 switch 32, the SB switch 33, and the SPF switch 34, respectively. The SHC switch 31 detects the shutter charging state of the shutter device 24. The SHC switch 31 is turned off when the shutter device 24 is charged by the shutter, and is turned on for other times. Therefore, the SHC switch 31 is turned off when the aforementioned shutter drive lever is in the charging position, and is turned on at the moment from the charging position ic to the position. This SHC switch 31 is turned on / off to the microcomputer 5 as the SHC k number. Said a l1 ϋ! 32 is open when the release button 7 is pushed to the half-push position, 1 remains open until it is pushed to the full-push position, where 1 electric U: 3 with 2 on / off is It is sent to the microcomputer 15 as a signal. Two: Is it 'whether it has been pushed to the all-in position, or the operation of releasing the press has not been detected. The SB switch 33 is opened / closed in conjunction with the back cover 13. When the back cover ^ is closed, it is 1232992. V. Description of the invention (8), OFF 3 3 is OFF 'and ON when the back cover 13 is ON. Moreover, the SB switch 33 is also linked to the roll operating unit 10, and when the flap cover 13 is closed and the push roll operating member 104 is pressed, the SB opening 33 is opened. This SB switch 33 is turned on / off to the microcomputer 15 as an SB signal. This SB signal is used to detect the opening and closing of the lid 13 and the control of the pre-roll or rewind. The SPF switch 34 is linked with the rotation of the sprocket of the feeding mechanism 23, and is turned on / off in accordance with the feeding of the negative film. This SPF switch 34 is turned on / off to the microcomputer 15 as an SPF letter / tiger, and is used for film feed control and the like. Microcomputer 15 is a central processing unit (CPU) that executes programs. It is composed of 2 input / output (I / O) circuits (not shown), read-only memory (ROM) 15a, and iw machine access memory ( RAM) 15b and the like. Various control programs are written in ROM15a. The microcomputer that executes these programs is driven by the red-eye prevention ^ ... 1 and the feed motor 22 according to the signals of the switches 31 to 34 described above. And control for outputting a charging prohibition signal to the flash device 25. The RAM 15b is written with various parameters required for control. In the 1/0 circuit, the driver 2 2, the flash device 25, and the switches 3 1 to 3 4 are connected. The input signals from the switches 31 to 34 through this 1/0 circuit are monitored by the CPU, and Driver 2 2, flash unit 2 5 sends out signals. The backup capacitor 36 maintains the supply voltage of the microcomputer 5 when the output lightning voltage of the battery 16 drops momentarily, thereby preventing the microcomputer 15 from being reset. And the diode 37 can prevent the power of the backup capacitor 36 from being consumed by the flash device 25 and the like. In addition, the backup capacitor% is provided in response to the instantaneous voltage drop. When the charging operation of the feed motor 21 and the flash lamp g 1 25 is performed simultaneously, the voltage drop is not so much. x Page 14 12996pif.ptd 1232992 V. Description of the invention (9) FIG. 3 shows the circuit diagram of the flash device 25. The flash device 25 is roughly composed of a main capacitor 42, a flash discharge tube 43, a trigger circuit 44, a discharge delay circuit 45, a diode 48, and the like. A circuit 49 for prohibition is provided in the circuit 41 as a prohibition means. The M circuit 41 converts the wheel-out voltage of the battery 16 into a high voltage, and uses this high voltage to charge the main capacitor 42 and the trigger capacitor. The dust circuit 41 is composed of two light sources: off 26, oscillating transistor 52, The transformer 53, the rectifier diode 54, and the like are configured to form a well-known intermittent oscillation circuit. The flash switch 26 is actuated by the rising circuit 4i when it is turned on, and is: It is output by _ pair of output terminals 563, 56b. The surplus and emitter terminals of Yingdian are connected to the vibrator. When the transistor is forbidden, the oscillator 52 cannot be operated. In this way, ten = tf ON (ON) The WA type can force the booster circuit to "operate" even if the flash switch 26 is on. This is not only used for charging, but also for charging, and the daytime private day and day body 49. The charging from the microcomputer 15 is used to stop the input of the "number" and turn ON. The rabbit is not only the circuit of the boost circuit 41. It can also be in the form of a taxi, "Electric shifting is not limited to Figures and other people. If you do n’t have a slave, you can use the structure corresponding to this boost circuit 41 = voltage, the output of road 41 ..., 56b Between them, 42 is connected. The main capacitor 42 is charged by the booster circuit 41. The trough capacitor 51, the synchronous switch 27, and the trigger = electricity are composed of contacts connected in series. The trigger capacitor 51 逑The connected impedance 58 is connected to the output end of the boost circuit 41 12996pif.ptd Page 15 1232992 5. Description of the invention (10) Between 56a and 56b, the same as the main capacitor 42 'is charged by the boost circuit 41 When the main capacitor 42 is completely charged, the charging voltage of the trigger capacitor 51 becomes the same as the main capacitor 42. The sync switch 27 is turned on / off in synchronization with the opening and closing action of the shutter blade as described above. When the sync switch 27 is on ， The charged trigger capacitor 5 丨 is discharged, and the discharge current flows into the trigger coil 57 A trigger voltage is generated on the primary side and on the secondary side. This trigger voltage is applied to the flash discharge tube 43 through the trigger electrode 43a. Also, in this example, the synchronization switch 27 is fed with a synchronization signal. — The flash discharge tube 43 is assembled In the flash light emitting part 4, it is connected between the terminals of the main capacitor 42. The flash discharge tube 43 is to apply a trigger voltage above a certain level to break the insulation between the electrodes to discharge the charge of the main capacitor 42 between the electrodes.借此 t trigger voltage is based on the start of the discharge of the trigger capacitor 51 to charge 1 ', in order to obtain a certain voltage level required to perform flash light emission

Voltage, the trigger capacitor needs to be charged above the light-emitting voltage corresponding to this voltage level. Dry w J is connected between the output terminals 56a, 56b of the booster circuit 41, and is discharged. This discharge delay circuit is when the boost circuit 41 is rendered inactive by using the prohibition. You ^ s | 49 opening and closing movements M + &mi; from the time point at least to the shutter leaf si two-step signal input During this period, after the charging voltage of the trigger capacitor 51 is maintained at the voltage of the transmittable capacitor 51, the trigger discharge is controlled to be smaller than the light-emitting voltage. The discharge delay circuit 45 includes a discharge impedance 45a and a delay capacitor.

12996pif.ptd Page 16 1232992 V. Description of the invention (11) 45b constitution. The discharge impedance 45a and the delay capacitor 45b are connected between the output terminals 56a and 56b of the booster circuit 41, respectively. Therefore, the discharge impedance 45a and the delay capacitor 45b are trigger capacitors connected in parallel. The delay capacitor 45b is charged by the booster circuit 41 in the same manner as the main capacitor 42. The diode 48 prevents the current from the charged main capacitor 4 2 from flowing into the trigger capacitor 51 and the delay capacitor, and prevents the charge of the main capacitor from being discharged by the discharge impedance 45a. A main capacitor 42 and a flash discharge tube 43 are connected to the cathode side of the diode 48, and a trigger capacitor 51, a discharge resistor 45a, and a delay capacitor 45b are connected to the anode side.

The discharge impedance 45a has a function of causing the delay capacitor 45b to discharge at a constant discharge rate to reduce the charging voltage of the delay capacitor 45b, and also has a function of discharging the trigger capacitor 51 to prohibit flash light emission. By using these discharge impedances 45a and delay capacitors 45b, the charging voltage of the trigger capacitor 51 can be maintained to a light-emittable voltage from the time when the booster circuit 41 is not operated to the time when the synchronization signal is input during the shutter blade opening and closing operation. After that, it is made smaller than the light-emission voltage. ^ When the opening and closing action of the shutter blade is started, that is, from the time when the annihilation circuit 41 is not activated in response to the opening of the SHc signal, until the trigger capacitor η

The time during which the $ 1 voltage is maintained above the light-emitting voltage (hereinafter referred to as the “transmittable I 2”) needs to be set to be longer than the time from the time when the boost circuit 4 1 is inactive to the time when the synchronous plant ^ rains in That is, the time until the flash light emission is performed (hereinafter referred to as the light emission delay time) is larger. From two ======

1232992 V. Description of the invention (12) Let the flash emit light when taking photos. Considering this point, it is necessary to determine the light-emitting time. The light emitting time can be adjusted by changing the impedance value of the discharge impedance 45a and the capacitance of the delay capacitor 45b. In this example, the light emission time is about 0.5 seconds, and the light emission delay time is 0.1 seconds or less. # Capacitor 59 is provided to make the change in battery 16 small in the initial stage of operation of booster circuit 41. And LED12 is connected to the coils that constitute the oscillation transformer. The voltage between the terminals of this coil varies according to the main capacitor M: J = voltage during the operation of the booster circuit 4 丨. This relationship can be used when the main capacitor is at a constant voltage. Always on. The machine "^ Secondly, the effect of the above structure is explained. The film is filled with Pei, the operating member 9 is opened to open the inner cover 13, and the card E is loaded into the card E chamber. Close 盍 13. When the SB signal is off (〇FF), it will be more lonely m 焱 μ M ^ 俽 细 细 细 fine 15 can detect this m :, ί up to 21 is forward and go to pre-roll processing. M Process' After rolling all the negatives to the photo, set the first frame (f 彳 r Q + ^ ^ rang η 拄 V rameset), and roll the negatives of the two-block counties back into the cassette to The shooting preparation is completed. And —: In the long frame, the shutter charging of the first frame is taken. Sigh, brother 1 is it clear that the choice is 5 during shooting, after that, you can press Λ ;? work / piece 5 to flash. The light operating member 5 22: set (ON), the boost circuit 41 starts to set the output terminals 56a, 56b opened on the 26th day of the temple flash switch to output a high f, the high voltage circuit 41 gate & , Respectively charge the main capacitor 42, trigger

12996pif.ptd Page 18 Page 1232992 V. Description of the invention (13) Capacitor 51 and delay capacitor 45b. When the main capacitor 42 is charged to a predetermined voltage and charging is completed, ledi2 is turned on. When the main capacitor 42 is in a charging-completed state, the trigger 51 and the delay capacitor 45b also have approximately the same charging voltage as the main capacitor 42. When the flash switch 26 is ON, the boost circuit 41 outputs a high voltage, because the trigger capacitor 51 and the delay capacitor 45b are still being charged. The trigger capacitor 51 is not affected by the transmission impedance 58, Discharging the discharge impedance 45a reduces the charging voltage, and the delay capacitor 45b does not decrease the charging voltage due to the discharge through the discharging impedance 45a. If the photographer confirms the lighting of the LED 12 through the charging completion display window 8, he can press the operation release button 7 after framing through the viewfinder. When the release button 7 is pressed to the half-press position, the $ 丨 switch 3 2 is ON, that is, the S1 signal is on. When these situations are detected by the microcomputer 丨 5, then execute FIG. 4 Process shown. And the processing in Fig. 4 has been simplified. When the s 1 signal is on, the on / off of the SHC signal can be detected by using a microcomputer. For example, when the release button 7 is maintained at the half-press position, at this point, the shutter device 24 does not operate, so the SHC signal is turned OFF. When the SHC signal is off, the S1 signal and SHC signal are monitored after the red-eye prevention LEDn lights up. Then, while the S1 signal is on (0N), the SHC signal is waiting to change from off to on. When the release button 7 is pushed from the half-push position to the full-push position, it responds

12996pif.ptd Page 19 1232992 V. Description of the invention (14) The shutter driving lever of this action ’shutter device 24 is moved from the charging position to the releasing position. As mentioned above, when the shutter drive lever is moved from the charging position to the releasing position, the SHC switch is OFF (〇FF) and 811 (: signal is OFF (〇FF). When the SHC signal becomes OFF, use the microcomputer at this moment After the red-eye prevention LED 11 is turned off, the microcomputer 15 sends a charging prohibition signal to the flash device 25.

When the SHC signal is detected as the S1 signal is turned on, the microcomputer 15 does not execute the red-eye prevention LED 11 when the SHC signal is on. Instead, the microcomputer 15 directly charges the battery. The prohibition signal is sent to the flash device 25. This is because when the release button 7 is pressed, it has been assumed that there is a process of quickly pressing the button to the all-in position. In this way, in any case, the charging prohibition signal can be input to the flash device 25 in response to the SHC signal being turned ON. By inputting the charging prohibition signal as described above, the flash device 25 can be used to prohibit the use of a transistor 49 In order to stop the switching transistor 52, the boosting circuit 41 is stopped. When the charging operation of the boosting circuit 41 is stopped in this way, the trigger capacitor 51 is transmitted through the impedance 58 and the discharging impedance 45a. Discharge and decrease the charging voltage. However, 'Because the impedance 58 connected in series and the delay capacitor 45b connected to both ends of the trigger capacitor 51 are being charged, even if the trigger capacitor 5 ^ starts to discharge, its charging voltage will not Immediately lower than the voltage that can be emitted. But] The delay capacitor 45b is discharged through the discharge impedance 4 5a, and its charging voltage will decrease. Therefore, the charging voltage of the trigger capacitor 5 will also slowly decrease.

1232992 V. Description of Invention (15)

If the light-emission time has elapsed, the charging capacity of the trigger capacitor 51 is smaller than the light-emission voltage. W On the other hand, the shutter blade 胄 of the shutter device 24 performs opening and closing operations by moving the shutter driving lever to the release position. Then, in this shutter blade opening and closing operation, when the shutter opening is fully opened, the synchronization switch 27 is on (ON). The switch 27 is on, the trigger capacitor 51 will be discharged, and a trigger voltage will be generated on the input side of the trigger coil 57 and applied to the flash tube 43 through the trigger electrode 43a. Compared with the time from the opening and closing of the shutter blades to the time when the synchronous switch 27 $ is turned on, that is, the lighting delay time and the lighting time, so when the charging voltage of the trigger capacitor 5 丨 exceeds the lighting voltage When the synchronous switch 27 is turned on (0N), the trigger capacitor 51 will discharge the electric tube 43. The trigger voltage required for the flash light is applied to the flash light. (When the omW enters the VI light, the flash operation member 5 is off.) After that, press the operation release button 7 to take a picture. = When the operating member 5 is in the off position, the flash switch 26 is turned off, and when the flashing light is turned on, each of the batteries 4, 5, 1, 4, 6 is charged, and when the flash is OFF, the voltage is boosted. When the charging operation of the circuit 41 is stopped, 49 is). Similarly, the trigger capacitor 51 is discharged through the impedance 58 and the impedance 45a, and the delay capacitor 45b is charged by the discharge impedance, and its charging voltage is slow. Slow down. And when the release button 7 is pressed after the flash operation member 5 is operated, 12996pif.ptd page 211232992 V. Description of the invention (16) V: Light delay 2 = f Press the shutter blade to open and close the shutter blade. When the synchronization switch = ⑽, the triggering capacity of the charging power plant of the capacitor 51 can be closed ^ OFF ^ OFF) ^ ^ ^ ° ^ ^ # „# # 5 ^ Same as the opening position) At this time, the microcomputer 15 and the shutter are installed with or without the shutter. After the shutter blades are opened and closed, the J-film is fed and the rotating sprocket is linked, so that the shutter device 24 is charged. With the change of iron 'when the completion of the feeding of 1 component, make: =: drive of the feeding motor 21, because the booster II; will not be ordered to charge, so the output of the battery 16 = and the microcomputer 15 Is reset. After the feed motor 21 is stopped, the microcomputer 5 stops outputting the charge. In this way, the booster circuit 41 is made chargeable.

^ If the switch 26 is on), the booster circuit 41 will start to move to Kj. Similarly, you can select the flash operation unit 5 while operating the flash operation unit. Sequence shooting has [Effect of the invention] As explained in detail above, according to the present invention, because the booster voltage is 12996pif.ptd, page 22, 1232992. 5. Description of the invention (17) Road prohibition means can be operated on the flash operation road ' The main capacitor is charged and the charging is stopped when it touches the OFF position. This is to forcibly prevent the boost circuit from using the prohibition means to maintain the input voltage of the synchronization signal during the open and close operation of the boost circuit to maintain the flash light. The capacitor is discharged to the open position and the closed position of the component more than the light-emittable voltage, so that the flash light can be emitted even when the flash operation member is in the open position. Although the present invention has been better defined by the present invention, any familiarity with this technique and scope can make a little more scope, when the attached patent application component is regarded as the ON position, the boost capacitor is generated. At the flash operation member position, the charging prohibition signal is turned on and borrowed; and a discharge delay means is provided. When the activation point is at least until the shutter leaf enters, the charging electric capacity of the trigger capacitor is above the light-emitting voltage, and then the trigger is triggered. It is small, so the flash light is selected by switching the flash operation. In addition, the embodiment of stopping the step-up power by the prohibition means is disclosed as above, but it is not intended to be used by artists' without departing from the spirit of the present invention, so what is defined by the protection scope of the present invention shall prevail. m 12996pif.ptd Page 23 1232992 Brief description of the drawings [Simplified description of the drawings] FIG. 1 is a perspective view of the appearance of a camera according to a preferred embodiment of the present invention. FIG. 2 is a block diagram showing the structure of the main part of the camera. FIG. 3 is a circuit diagram of a flash device. FIG. 4 is a flowchart of a processing procedure when a push operation release button is pressed. [Illustration of diagrams] 5: Flash operation member, 7: Release button, 12: Diode (LED), 1 5: Microcomputer, 16: Battery, 24: Shutter device, 25: Flash device, 2 6: Flash Switch, 2 7: synchronous switch, 4 1: boost circuit, 42: main capacitor, 43: flash discharge tube, 43a: trigger electrode, 44: trigger circuit, 45: discharge delay circuit, 45a: discharge impedance, 45b : Delay capacitor, 48: Diode, 49: Forbidden transistor, 52: Oscillating transistor, 51, 53: Oscillating transformer, 54: Diode for rectification, 56a, 56b: Output terminal, 5 7: Trigger Coil, 5 8: impedance, 5 9 capacitance.

12996pif.ptd Page 24

Claims (1)

1232992 6. Scope of patent application " --- ^ _____ 1 · A camera with a flash device, a discharge tube discharges a main capacitor, and responds to the shutter [using a synchronization signal input by a flash to discharge a trigger capacitor The opening and closing action is medium voltage, and the trigger voltage is applied to the flash discharge stem, and the trigger-electric camera includes: g 'It is characterized in that the flash is selected as a component between a favorable position and a closed position; a means for inhibiting signal output In response to the start of the closing operation of the release operation, a charging prohibition signal is output. Among the blades, the flash device includes: And ;;; electricity; and == off position, do not operate to stop the main boost ... = segment, using the charge prohibition signal to force a discharge delay means, when using the prohibition means to make the boost voltage When the road is not moving, at least in the opening and closing movement of the body g Μ 卩 卩 xi until the synchronization signal It, maintain the charging voltage of the trigger capacitor to a flash-lightable-first voltage 'and then make the trigger capacitor light voltage even smaller. 2 ^ The camera according to item 丨 of the scope of patent application, the discharge delay section 疋 is composed of a delay capacitor and a discharge impedance connected in parallel with the trigger capacitor. 1232992 12996pif.ptd Page 26