JPS5990390A - Device for firing discharge light - 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 The present invention is directed to a discharge lamp lighting device that uses a saturated vapor pressure type high EE discharge lamp full-phase control element 1-14 to produce a space-powered battle lamp. To provide a discharge lamp lighting device that can easily design a circuit that can easily design a circuit that is prone to flickering at the beginning or going out due to factors such as the source discharge dog ψ or variations in the enclosure constant. be.

Conventionally, this type of discharge lamp lighting device has been designed as shown in Fig. 1 and Fig. 21, where (1) in Fig.
(2) A high-pressure discharge lamp of the saturated vapor pressure type that exhibits an iE characteristic in a transient state and a steady state (hereinafter abbreviated as si), which exhibits an iE' characteristic in a book, and (3) consists of a bidirectional 8-terminal thyristor. The phase control element (4) is the phase control element (
3) Auxiliary isitactasis element connected in parallel to t, (
5) is the main EJ tension element, (6) is the ignition control circuit of the phase control element 13),
It is a 5-pin 1-mo horizontal circuit that detects
8) is formed, and the conduction phase angle (θ1) of the phase control element (3) is controlled according to the run ``j'4i1000 (Vea) to turn on the discharge lamp (2) at a constant power. In addition, instead of the run ``j city Iφ output circuit (7),
The run'j current detection circuit that detects the run'j current (Iea) is used to detect the run'j current (1/a)K, and the phase control element (
The conduction phase angle (θl) of 31 may be controlled.

@2 is the ignition control circuit (6) and the detection of 1000 run drops +
18i7), in which (9) is a power supply circuit, 110) is a power synchronization signal generation circuit, (11) is a conduction phase angle setting circuit, (12) is a trigger circuit, and (I)
Iri step-down trasis, (PT) is pulse transis, (D
BI) (DJ32) Keitaiodzuridge, (ZD
IXZD2) Zener diode (Di) to (D5) Zener diode, (TM) is the timer IC (New Japan'-1
μPC1555), (C1) to (C5) manufactured by Choki Co., Ltd.
Keconde 2 Nosa, (Ra) (itbXRx) - (R7
) is resistance.

The operation of the conventional example will be explained below using FIGS. 31 to 5. Figure @3 shows the waveforms of various parts around the timer IC ('rM), and figure (a) shows the waveforms of the timer IC ('rM).
TM) ■The voltage across the resistor (R4) applied to the caltrop (
VB2), the same figure (bl (C1 is the con-defuser (
The voltage across C4XC3) (■C') (■C3),
(d) n 7”l 11/st5 cis(PI')
The terminal voltage at both ends of the primary winding is tMo(VPI). Figure 4 shows the phase control 1 eye 1 chord (3; 4 points 10 angles (//l)
'i[i,
Q 'j [is position a with respect to j mo (Vm )) 1 angle (
It shows the connection between the current 2 and the pressure (Via), and this resistance (t
ta) (+Lb) K te min tf g h, Corresponding to the detected rotational pressure (Vct) smoothed by kM flow A in the quiode pre-1 soj (DB2) and the cor J punsa (CI), even 4 figure i7r [ Vct-θ1. l'4 indicating θ21 waiting condition
There is also a T. Figure 5 shows the waves 1k of each part during steady-state lighting.
tt Ti1iT pressure (■1) toyif EF (
(b) K-J current (1/
The same figure (showing the on/off state of C1 digit 4H control 1 flag (31). Now, if we explain the operation of timer △I Ccl-!vl) +11, then resistor (b) (R4) #-1 :
Thailand? IC('rM) (1) (1e:, +K
Nidorika signal gold gives ■ air applied to caltrops)
King (VB2) hy, 8 F4 (a) at 12 o'clock Ijjl rK 'tX I! :) (Vcx)1/
1 +; below), ■ caltrops and ■ pins are %H
1, and the condefuser (C3) (CA) starts to fill up.
of! +111 x @ Sora 1st (VC4) Ka circuit * in
When the voltage becomes 2/8 of (Vc2), it becomes ■Hoshishi and ■Hishika'L〃, and the electric charge of the core J capacitor (C4) is discharged via the diode (D4), ■Hashishi, and ■Hashishi, and the condenser (C3 )'s electric charge is transmitted through the primary winding of the pulse transformer (PR), and at this time, the phase is changed by the tri-force pulse induced in the secondary winding of the pulse transformer (PT). Control element (3) is fully ignited and [1
At this point, the phase control element (3) is turned on. In addition, ■Hishi and Φ pin of IC (TM) to the timer, 7 is the power supply terminal, ■Hi'J is the reset function, ■
P) Since this is a citrol terminal and does not require a reset function in the conventional example, P) Full circuit power supply (VC2)
Since it is connected to the earth and no control is required, it is grounded in an alternating current manner via a large caltrop.

Next, I will explain the previous work as a whole.

Now, when the AC power supply il+ is turned on, the AC power supply ill is applied to the discharge lamp (2) via the phase control element (3), the auxiliary isitactance element (4), and the main intensification element (5), and the discharge lamp is discharged. The electric lamp (2) will start, but at the initial stage of starting, the discharge lamp (2) will be almost in a short-circuited state, and the running voltage (VI!a) will be extremely low. At this time,
Detection electron (Vcl) of the error detection circuit (7)
Since the voltage becomes low, charging of the condenser (C4) is done by the resistance (Rs
), it is performed only from the circuit power supply (VC2) via
End type IIE (VC4) Ifi: 101 way * source (VC
When 2/3 of 2) is reached, the IM is delayed and the phase angle (θl) of the phase control element (3) is fixed at 9 with a large delay, as shown at point A in Figure @4. Next, run ′j city pressure (Vf
As a) increases, the detected gravity (Vcl) also increases, so the condenser (C4) is charged from the circuit M (VC2) via the resistor (R6), and the resistor (
R2) and 4 iodes (D3)
It is also performed from C1), and the I side Qj of the condefuser (C4)
When J city 1 earth (VC4) reaches 2/3 of the circuit power supply (VC2), the opening becomes faster, and the phase control element (31's 4-way phase angle (θ1) 8 and 7 pressure (Via) In other words, the voltage across the condenser (C4) increases by 1.
VC4) is now shown by the dotted line in the third (branch) (bl),
At this time, the conduction phase angle becomes (θ1)'. The reason why the conduction phase angle (θ1) is completely reduced as the upper pressure (Via) increases is that at startup, the discharge lamp (2) becomes a short-circuit cap, and the phase control element ( If conduction occurs between 31 and 31, an overcurrent will flow at 1 to 1 through the main oscillation (5), which has a relatively low oscillation, so the initial value of the 4 trace phase angle (C1) is 100 ('deg). Although it is set in the vicinity, if the conductor phase angle (C1) is fixed as it is, the run-5 airflow (Iea) will decrease, so it is necessary to shift to steady lighting. )″′j current (
To ensure the conduction phase angle (C1) y''
It advances as the $ pressure (Via) increases. In this way, the lamp voltage (VI!a) of the discharge lamp (2) gradually approaches the rated voltage and shifts to a steady lighting state (@4
(around 8 points). Here, (C2
) The power supply room of the voltage (Via)! It shows the lagging phase angle (10-11) with respect to ±(Vs), and this lagging phase angle (C2) is lower than the lamp voltage (Vla).
0 to 20 ■) 90 (
deg), but it is about 7″′j electric rtE (Vla
) increases gradually, and reaches a stable level of 60 (deg).
). By the way, in such conventional examples,
The phase control element (3) conduction phase angle (C1
) is set ahead of the delay phase angle (C2) as shown by the dotted line in FIG. In such a match, the amount of force 1t'& (12
The recovery output (CVea) output through the entire pulse trasis (PT) of
■ is applied to the gate of the phase-controlled Jill element (3).
Phase controller 1 water element (3) is fired at the end of half cycle 1a, and due to this firing error, phase 4i! There was a drawback that the I2 element (3) did not ignite and remained off, causing the discharge lamp (2) to flicker and, in the worst case, to disappear. In addition, in order to eliminate all of these drawbacks, it may be possible to set the circuit constants so that the control/curvature phase angle (C1) and the delay phase angle (C2) do not approach each other, but in this case, the discharge lamp (2) Required current (Il!a) to shift to steady lighting
) at the time of starting, and there were problems in the circuit design, such as 1 bar 1 becoming very long at starting, and 1 bar 1 tending to be turned on continuously with many lines of f. In addition, since the synchronization signal for setting the conduction phase angle ((c) of the phase control element (31) is obtained from AC @wil+, there are no adverse effects due to power supply environment such as distortion of the power supply voltage (Vs) waveform and level fluctuations. The present invention has been made in view of the above points.

Examples will be described below using figures. 6 and 7 show an embodiment of the present invention, and the schematic configuration is the same as that of the conventional example.Sueyori's feature is that the run'j voltage detection circuit (7) of the conventional example is the same as the conventional example. Instead, a synchronization signal (sync signal generation circuit 03 that generates V C (1)) synchronized with the run electronics (■l!a) is provided, and this synchronization signal generation circuit (13) and the synchronization signal ( The conduction phase angle (θ) of the phase control element (31) with respect to the power supply box FE (■3) of the phase control element (Vco)
The phase control means (8) is completely formed with the ignition phase setting circuit (Ill) which sets the ignition phase to be delayed by a predetermined phase (C3) from C2).
It is composed of resistors (Ra) (Rb) that divide the voltage (VI!a)
The same signal Ji+ (Vc6) as shown in ) is input to the timer IIIc (TM) of the ignition phase setting circuit (II).

In addition, capacitor C4) of the ignition phase setting circuit (11)
is charged only from the circuit drop ffj (Vc2) through the resistor (R6) k, and is varied so that the above-mentioned predetermined phase (C3) is set according to the time constant of the resistor (R6) and the capacitor (C4). .

The operation of the embodiment will be described below. Figure 8 d Raninozu'ichi 1 King (Vla) and lead 1Φ phase angle (C1) and 1
Relationship between fY phase angle (C2)? Figure 9 shows the waveforms of each part.
n (bl is the synchronization signal (Vco), s (C) is the capacitor (C4), both ends type (VC4), 1 mark (dl is the both ends of the primary winding (Vpl) of the pulse trasis (PT). )
It is.

Now, when the AC power supply +1] is turned on, the AC power supply fi+ is applied to the discharge lamp (2) via the auxiliary input system (4) and the main power supply system (5) 4, and the discharge lamp is turned on in the same way as in the conventional example. (2) starts. At this time, the synchronization signal (Vco) output from the 14th period signal generation circuit 03) or the ignition phase setting [+1 path (Il) timer IC (rM)
The electronic value is 1 of the circuit transparency (VC2).
/3 [At 3 points, ■ water chestnut and ■ water chestnut ゝl-1
', and the capacitors (C3) and (C4) start charging. Next, at the time point 12 when the electrons (VC4) at both ends of the capacitor C become 2/3 of the circuit power supply (VC2), the charge of the capacitor (C3) becomes 1 and the charge of the transformer (p'r) becomes 1.
The second winding of the pulse transformer (PT) was struck by lightning with all its valves closed.
The phase control element (3) is turned on by the tri-j5J'X pulse induced in the next winding, and a current flows through the phase-side 4m element (3) to the discharge lamp (2).

The lead im phase angle (C1) of this phase control element (3) is always delayed by a predetermined phase (C3) from the lagging phase (C2) of the pump's city pressure (Vla) with respect to the power supply type IE (VS). Since this is set, there will be no occurrence of ignition of the phase control element (3) due to the conduction phase angle (C1) being ahead of the delayed phase (C2), and flickering and turning off during startup can be prevented. become. In addition, the timer rc ('
TM) and the external resistor (C4)
A predetermined phase (C3) can be set by appropriately setting the time constant 1yi of the time constant circuit consisting of 4, the phase control element (3) can be fully fired and can be formed at low cost.

Sixth, as in the conventional example in which the synchronization signal 4 is obtained from the AC power supply fi+, the waveform distortion or the waveform distortion of the power supply type rE(■s)
/ Is it influenced by the space environment such as fluctuations? Uke is a sacred thing.

In the present invention, as described above, an AC voltage auxiliary voltage is applied to a high-pressure discharge lamp through a phase control element connected in parallel with a phase control element and a high-pressure discharge lamp, and a voltage is applied to the high-pressure discharge lamp. r Electric lamp air B = Aiike rap based on the normal flow of the queen (zo phase + 'l?! ``In the lamp lighting device, the 1-bright signal generation circuit that generates the same light signal that is identical to the electric current that hits or runs, and the phase control element that generates the 1-bright signal to F as a reference. The conduction phase angle is set to be delayed by a predetermined phase from the delay phase angle of the current with respect to the sentinel voltage, and the arc phase setting circuit forms a phase control means. Since the conduction point of the phase control element is set to always lag by a predetermined phase, the conduction point angle is always delayed by a predetermined phase. There is no occurrence of ignition of the phase control element due to the phase being ahead of the phase, and there is an effect that it is possible to prevent the start of the 8iQ1 phase and the disappearance of the phase control element.
．． Since the conduction phase angle is set by delaying the delayed phase of the -JJJ current by a predetermined phase, circuit design can be easily achieved by setting all the time constants of the timer circuit appropriately. Furthermore, since the synchronization signal is not obtained from the AC groove as in the conventional case, it is less susceptible to the negative effects of airborne environmental effects such as waveform distortion and level fluctuations of the electrohydraulic voltage. There is an effect.

[Brief explanation of drawings]

@1r'<l-1 Conventional pull circuit 1ya4, @2
1 (all-f: 11) Main part block I omitted (Figure, Figure 21
Figures 1 to 51 are explanatory notes on the imperial draft on 14, Figure 6 is a block circuit diagram of the present invention-embodiment, Figure 7 is a specific circuit diagram of the main parts of the same, and Figure 8 and 91 are the same as above. FIG. ]1) is an AC/power supply, (2) is a high pressure discharge lamp, (3) is a phase control means, (4) is an auxiliary interface element, (6)
is the main intactasis element, (8) is the phase control means, (1
1) ignition phase setting circuit; (13) is a synchronization signal generation circuit; Figure 1

Claims (1)

[Claims] +11 AC power is applied to the high-pressure discharge lamp through the phase control element in which the auxiliary isitactor y-s element is connected in parallel and the main a-7-bit phasing element, and the above is applied based on the lamp voltage or lamp current of the high-pressure discharge lamp. A discharge lamp lighting device comprising a phase control means for controlling the conduction phase angle of a phase control element, comprising: a synchronization signal generation circuit for generating a synchronization signal synchronized with a run voltage or a run current; A phase control means is formed by an ignition phase setting circuit which sets the conduction phase angle of the phase control element to be delayed by a predetermined phase from the delay phase angle of the voltage or current with respect to the power supply voltage. A discharge lamp lighting device characterized by comprising: