JP2011165439A5

JP2011165439A5 -

Info

Publication number: JP2011165439A5
Application number: JP2010025758A
Authority: JP
Filing date: 2010-02-08
Publication date: 2013-02-21
Anticipated expiration: 2030-02-08

Description

この発明は、制御を受けることでスイッチングし、スイッチングによって直流電圧を生成するスイッチング素子と、前記スイッチング素子によって生成された直流電圧に基づく電荷を充電し、充電された電荷に基づく直流の充電電圧を光源に供給する供給コンデンサと、前記スイッチング素子のスイッチングを制御する制御部とを備えた光源用直流電圧生成部と、前記供給コンデンサの前記充電電圧が所定の電圧以上になると、前記供給コンデンサに充電された電荷の放電を開始する放電部と、前記放電部によって前記供給コンデンサの電荷の放電が開始されると、前記供給コンデンサの電荷が放電された状態を維持するように、前記制御部に前記スイッチング素子のスイッチングを停止させる放電記憶部とを備えることを特徴とする。 The present invention switches by receiving control, generates a DC voltage by switching, charges based on the DC voltage generated by the switching element, and charges the DC charging voltage based on the charged charge. A light source direct-current voltage generation unit including a supply capacitor to be supplied to the light source and a control unit that controls switching of the switching element; and charging the supply capacitor when the charging voltage of the supply capacitor exceeds a predetermined voltage A discharge unit that starts discharging the generated charge; and when the discharge unit starts discharging the charge of the supply capacitor, the control unit is configured to maintain the discharged state of the charge of the supply capacitor. and wherein the obtaining Bei a discharge storage unit the switching of the switching element Ru is stopped.

実施の形態３．
図６は、実施の形態３のＬＥＤ照明装置１００３の回路構成図である。図６は実施の形態１のＬＥＤ照明装置１００１を示す図２に対して、
図２における放電部１０１−１の放電抵抗２３が、放電部１０１−３においてＰＴＣサーミスタ２３−１となった点のみが異なる。それ以外は、図２の構成と同じである。 Embodiment 3 FIG.
FIG. 6 is a circuit configuration diagram of the LED lighting apparatus 1003 of the third embodiment. FIG. 6 shows the LED lighting device 1001 of the first embodiment as compared to FIG.
Discharge resistor 23 of the discharge unit 101-1 in FIG. 2, only in that a PTC thermistor 23-1 at discharge conductive portion 101-3 is different. Otherwise, the configuration is the same as that of FIG.

Claims

A switching element that switches by receiving control and generates a DC voltage by switching, and charges based on the DC voltage generated by the switching element are charged, and a DC charging voltage based on the charged charges is supplied to the light source. A light source direct-current voltage generation unit including a supply capacitor and a control unit that controls switching of the switching element;
When the charging voltage of the supply capacitor is equal to or higher than a predetermined voltage, a discharge unit that starts discharging the charge charged in the supply capacitor;
When the discharge of the charge of the supply capacitor is initiated by the discharge unit, and the like charge of the supply capacitor to maintain a state of being discharged, the discharge storage section Ru stops the switching of the switching element to the control unit light source power supply and wherein the obtaining Bei a.

  The light source DC voltage generator is
  Having a transformer that insulates the primary side from the secondary side;
  The discharge storage unit
  2. The light source power supply device according to claim 1, wherein a detection signal based on the charging voltage is received while being insulated from the discharge unit, and the control unit is controlled based on the received detection signal.

The light source is
Having a predetermined lighting voltage for lighting,
The predetermined voltage at which the discharge unit starts discharging electric charge is:
The light source power supply device according to claim 1 , wherein the power supply device is higher than the lighting voltage by a predetermined value or more.

The predetermined voltage at which the discharge unit starts discharging electric charge is:
The power supply device for a light source according to claim 3 , wherein the power supply device is higher than the lighting voltage by 3V or more.

The discharge part is
The discharge of electric charges charged in the supply capacitor, within a predetermined time from the start of the discharge of the charge, any of the charging voltage of the supply capacitor of claim 3 or 4, characterized in that below the operating voltage A power source device for a light source according to claim 1.

The discharge storage unit
The volatile memory is configured to maintain a state in which the electric charge of the supply capacitor is discharged by receiving power supply, and to release the state in which the electric charge of the supply capacitor is discharged when power supply is lost. The power supply device for light sources in any one of 1-5 .

The discharge part and the light source are:
The supply capacitor is connected in parallel from the supply capacitor in the order of the discharge unit and the light source,
The light source power supply device further includes:
Arranged in at least one of a path of an inflow current flowing into the light source based on the charging voltage of the supply capacitor and a path of an outflow current flowing out of the light source based on the charging voltage of the supply capacitor. , along with creating a a disconnection state overcurrent exceeding the specified range, to any one of claims 1 to 6, characterized in that it comprises a resettable fuse to return to a disconnection state overcurrent return to the specified range The power supply device for light sources as described.

The discharge part and the light source are:
The supply capacitor is connected in parallel from the supply capacitor in the order of the discharge unit and the light source,
The discharge part is
A self-recovering type in which a discharge current indicating the flow of the discharged electric charge passes and a disconnection state is created when the discharge current exceeds the specified range, and the disconnection state is restored when the discharge current returns to the specified range. The power supply device for a light source according to any one of claims 1 to 7 , further comprising a fuse.

As the self-resetting fuse,
PTC (Positive Temperature Coefficient) light source power supply apparatus according to claim 7 or 8 characterized by using a thermistor.

The illuminating device provided with the power supply device for light sources in any one of Claims 1-9.