JP2007141653A - Power source device - Google Patents

Power source device Download PDF

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Publication number
JP2007141653A
JP2007141653A JP2005333935A JP2005333935A JP2007141653A JP 2007141653 A JP2007141653 A JP 2007141653A JP 2005333935 A JP2005333935 A JP 2005333935A JP 2005333935 A JP2005333935 A JP 2005333935A JP 2007141653 A JP2007141653 A JP 2007141653A
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voltage
battery
illumination
time
power supply
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Akihiro Fukuda
旭洋 福田
Yoshio Mochida
宣雄 持田
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

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Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus having illuminator operated by a battery preventing lowering of power caused by lowering of voltage at lighting the illuminator and turn-off of power source caused by a malfunction under sudden lowering of voltage. <P>SOLUTION: The voltage of the battery 1 is detected at a battery voltage detection part 7, and whether the battery voltage is lower than a first set voltage V1 or not is judged at a first voltage comparing part. When a state that the battery voltage is lower than the set voltage is continued up to a first set time T set in advance, is detected at a first time setting part 9, a power source control part 10 turns off the power source. An illumination lighting control part 13 turns off the illuminator 6 when the second voltage comparing part 12 detects whether the voltage of the battery become lower than a second set voltage V2 set in advance or not, and the a second time setting part 12 detects that a state of lower than the set voltage is continued up to a second set time T2 set in advance. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、照明点灯操作により一定時間点灯する照明手段を有する電池駆動機器における電源電圧の低下に対処する手段を講じた電源装置に関するものである。   The present invention relates to a power supply apparatus provided with means for coping with a decrease in power supply voltage in battery-powered equipment having illumination means that is lit for a certain period of time by an illumination lighting operation.

従来、照明手段を有する電池駆動の機器の電源装置には、使用時間の経過に従って電池の端子電圧が所定の電圧より低下したのを検知して警報を発すると共に、電力供給を遮断するものがある（特許文献１参照）。   2. Description of the Related Art Conventionally, some battery-powered power supply devices that have illumination means generate an alarm by detecting that the battery terminal voltage has dropped below a predetermined voltage as the usage time elapses, and cut off the power supply. (See Patent Document 1).

図５は特許文献１に記載された従来の照明手段を有する電池駆動機器を示し、同図５において、電池３１と照明手段３３との間に、電池３１からの出力電圧が予め定めた所定電圧よりも低下したのを検知してその信号を出力する検知手段（１６、１７、１８、）と、この検知手段からの検知信号を入力して警報機２２ａ、２２ｂを動作させる警報手段（１９，２０，２１，２１’）と、上記検知手段からの検知信号を入力して予め設定した所定時間後に上記照明手段３３への電力の供給回路を遮断する遮断手段（２３、２４、２５、２６）とを有する警報遮断装置１５を設けたものである。これにより、使用時間の経過に従って電池３１の端子電圧が所定電圧より低下したのを検知して警報を発すると共に、電力供給を遮断するものであった。
特開平１０−１２００１号公報 FIG. 5 shows a battery-powered device having the conventional illumination means described in Patent Document 1. In FIG. 5, the output voltage from the battery 31 is a predetermined voltage between the battery 31 and the illumination means 33. Detection means (16, 17, 18) for detecting the lowering of the output and outputting the signal, and alarm means (19, 19) for operating the alarm devices 22a, 22b by inputting a detection signal from the detection means 20, 21, 21 ′) and a shut-off means (23, 24, 25, 26) for shutting off the power supply circuit to the illumination means 33 after a predetermined time inputted by inputting a detection signal from the detection means Is provided with an alarm cutoff device 15. Accordingly, it is detected that the terminal voltage of the battery 31 has dropped below a predetermined voltage as the usage time elapses, and an alarm is issued and the power supply is shut off.
Japanese Patent Laid-Open No. 10-12001

しかし、上記の方式では、ＬＥＤ等の照明手段に大電流が流れた場合、図６で示すように消費電力が増大するため、図７で示すように急速に電圧が低下し、機器が動作可能な電圧より低下してしまい、機器が電源オフ処理をしていないにもかかわらず、パワーダウンして動作が停止してしまうことがある。これを防ぐために、予め設定した電圧以下に低下した時間を測定する際、電源オフにするかどうかを判断する時間を短く設定すると、突発的な電圧低下に反応して誤動作し、機器が電源オフになってしまうという問題点があった。   However, in the above method, when a large current flows through the illumination means such as an LED, the power consumption increases as shown in FIG. 6, so that the voltage decreases rapidly as shown in FIG. In some cases, the operation is stopped due to power-down even though the device has not performed the power-off process. To prevent this, when measuring the time when the voltage drops below a preset voltage, if you set a short time to determine whether to turn off the power, it will malfunction in response to a sudden voltage drop and the device will turn off. There was a problem of becoming.

ここで電源オフとは、機器が正常な電源切断作業を行って機器の動作を止めることを表し、パワーダウンとは、電池電圧の低下により、機器が正常な電源切断作業を行うことができずに機器の動作が止まってしまうことを表す。   Here, power off means that the device performs a normal power-off operation and stops the operation of the device, and power-down means that the device cannot perform a normal power-off operation due to a decrease in battery voltage. This means that the operation of the device stops.

本発明は、照明点灯により大電流が流れた際に、急速な電圧低下で機器がパワーダウンすることを防止し、さらに、突発的な電圧低下で誤動作し、機器が電源オフになることを防止する電源装置を提供することを目的になされたものである。   The present invention prevents a device from powering down due to a rapid voltage drop when a large current flows due to lighting, and also prevents a device from malfunctioning due to a sudden voltage drop and turning off the device. It is made for the purpose of providing the power supply device which performs.

この課題に対処するため、本発明の電源装置は、照明点灯操作により一定時間点灯する照明手段を有する電池駆動機器において、電池電圧が予め設定した第１の設定電圧V１より低下した状態が予め設定した第１の設定時間T１まで継続した場合に電源をオフにするための電源制御部と、電池電圧が予め設定した第２の設定電圧V２より低下した状態が予め設定した第２の設定時間T２まで継続した場合に照明手段を消灯するための照明点灯制御部とを有する構成である。   In order to cope with this problem, the power supply device according to the present invention is preset in a state in which the battery voltage is lower than the preset first set voltage V1 in a battery-driven device having lighting means that is turned on for a certain period of time by lighting operation. A power supply control unit for turning off the power supply when continuing to the first set time T1, and a second set time T2 set in advance when the battery voltage is lower than the preset second set voltage V2 It is the structure which has an illumination lighting control part for turning off an illumination means when it continues until.

この構成により、本発明では照明点灯時に電池電圧が予め設定した第２の設定電圧Ｖ２より低下した状態が、短く設定した第２の設定時間Ｔ２まで継続した場合に照明手段を消灯するための照明点灯制御部を新たに設けることによって照明手段の消灯を早くした。これにより、照明点灯時の電圧低下によって、パワーダウンしてしまうことを防止すると共に、突発的な電圧低下で誤動作し、電源がオフになることを防止する作用を有する。   With this configuration, in the present invention, the illumination for turning off the illumination means when the state where the battery voltage is lower than the preset second set voltage V2 when the illumination is lit continues until the second set time T2 set short. The lighting means is quickly turned off by providing a lighting control unit. This prevents the power from being reduced due to a voltage drop during lighting, and prevents the power from being turned off due to a sudden voltage drop.

以下、本発明の電源装置の機能を実施するための最良の形態について、図面を参照しながら説明する。   Hereinafter, the best mode for carrying out the function of the power supply device of the present invention will be described with reference to the drawings.

（実施の形態１）
図１は、本発明の実施の形態１における電源装置の各部の機能を示すブロック図、図２は同じく実施の形態１における電源装置の処理の流れを示すフローチャート、図３は同じく実施の形態１において第２の設定電圧V２を第１の設定電圧V１より高く設定した場合の動作例を示す図である。 (Embodiment 1)
FIG. 1 is a block diagram showing the function of each part of the power supply device according to the first embodiment of the present invention, FIG. 2 is a flowchart showing the processing flow of the power supply device in the first embodiment, and FIG. FIG. 6 is a diagram illustrating an operation example when the second set voltage V2 is set higher than the first set voltage V1.

図１において、電池１は、機器の回路に電力を供給する電源回路２に接続され、電源回路２から照明手段を除く回路への電力供給をオンオフする電源スイッチ３を介して照明手段を除く機器の回路４に接続されている。同様に、電源回路２から照明手段への電力供給をオンオフする照明スイッチ５を介して照明手段６に接続されている。ここで、照明手段６には、例えばＬＥＤ等の発光する照明部そのものと、これを駆動する照明回路部を含むものとする。そして、本実施形態における照明手段６は、機器の操作のために各種の操作ボタンのどれか、または特定の点灯ボタンを押すと（照明点灯操作）、一定時間、たとえば数秒から十数秒の間、ＬＥＤなどを点灯するように構成しているものである。   In FIG. 1, a battery 1 is connected to a power supply circuit 2 that supplies power to a circuit of the device, and the device excluding the illumination unit is connected via a power switch 3 that turns on / off the power supply from the power supply circuit 2 to the circuit other than the illumination unit. The circuit 4 is connected. Similarly, it is connected to the illumination means 6 via the illumination switch 5 that turns on / off the power supply from the power supply circuit 2 to the illumination means. Here, the illumination means 6 includes, for example, an illumination unit that emits light, such as an LED, and an illumination circuit unit that drives the illumination unit. And the illumination means 6 in this embodiment presses any one of various operation buttons or a specific lighting button for the operation of the device (lighting lighting operation), for a certain time, for example, for several seconds to ten and several seconds, The LED is turned on.

電源回路２には、電池１の電圧値を検出する電池電圧検出部７が接続され、この電池電圧検出部７には、電池電圧検出部７で検出した電池電圧と、予め設定した第１の設定電圧Ｖ１とを比較する第１の電圧比較部８が接続され、第１の電圧比較部８にはさらに第１の電圧比較部８で電池電圧が第１の設定電圧Ｖ１より低下している状態が、予め設定した第１の設定時間Ｔ１まで継続するか否かを測定する第１の時間測定部９が接続されている。そして第１の時間測定部９には電源スイッチ制御部１０が接続され、電源スイッチ制御部１０は、第１の電圧比較部８と第１の時間測定部９の判定結果により、照明手段を除く回路をオンオフする電源スイッチ３を制御する。   A battery voltage detector 7 for detecting the voltage value of the battery 1 is connected to the power supply circuit 2. The battery voltage detector 7 includes a battery voltage detected by the battery voltage detector 7 and a preset first voltage. A first voltage comparison unit 8 that compares the set voltage V1 is connected to the first voltage comparison unit 8. The first voltage comparison unit 8 further lowers the battery voltage from the first set voltage V1. A first time measuring unit 9 for measuring whether or not the state continues until a preset first set time T1 is connected. A power switch control unit 10 is connected to the first time measurement unit 9, and the power switch control unit 10 excludes illumination means based on the determination results of the first voltage comparison unit 8 and the first time measurement unit 9. The power switch 3 for turning on and off the circuit is controlled.

また電池電圧検出部７には、照明手段６が点灯しているときに、電池電圧検出部７で検出した電池電圧と予め設定した第２の設定電圧Ｖ２とを比較する第２の電圧比較部１１が接続され、第２の電圧比較部１１には、さらに第２の電圧比較部１１で電池電圧が第２の設定電圧Ｖ２より低下している状態が、予め設定した第２の設定時間Ｔ２まで継続するか否かを測定する第２の時間測定部１２が接続されている。そして第２の時間測定部１２には照明点灯制御部１３が接続され、照明点灯制御部１３は、第２の電圧比較部１１と第２の時間測定部１２の判定結果により照明手段６をオンオフする照明スイッチ５を制御する。   The battery voltage detection unit 7 includes a second voltage comparison unit that compares the battery voltage detected by the battery voltage detection unit 7 with a preset second set voltage V2 when the illumination unit 6 is lit. 11 is connected, and the second voltage comparison unit 11 is in a state where the battery voltage is lower than the second set voltage V2 in the second voltage comparison unit 11 for a preset second set time T2. The second time measuring unit 12 that measures whether or not to continue is connected. An illumination lighting control unit 13 is connected to the second time measurement unit 12, and the illumination lighting control unit 13 turns on and off the illumination unit 6 based on the determination results of the second voltage comparison unit 11 and the second time measurement unit 12. The lighting switch 5 to be controlled is controlled.

以上のように構成された本実施形態の電源装置において、電池電圧検出部７〜照明点灯制御部１３の構成を、マイクロコンピュータで構成することができ、その際における作用動作について、以下、図２のフローチャートを用いて説明する。   In the power supply device of the present embodiment configured as described above, the configurations of the battery voltage detection unit 7 to the illumination lighting control unit 13 can be configured by a microcomputer. It demonstrates using the flowchart of these.

ステップＳ１で、電圧検出部７は電池１の電圧を検出しステップＳ２に処理を進める。ステップＳ２で、第１の電圧比較部８は、ステップＳ１で検出した電池１の電圧と、予め設定した第１の設定電圧Ｖ１とを比較し、電池電圧が第１の設定電圧Ｖ１より低ければステップＳ３に、電池電圧が第１の設定電圧Ｖ１より高ければステップＳ５に処理を進める。
ステップＳ３で第１の時間測定部９は、電池１の電圧が第１の設定電圧Ｖ１より低い状態が、第１の設定時間Ｔ１まで継続すればステップＳ４に、第１の設定時間Ｔ１まで継続しない場合は、ステップＳ５に処理を進める。ここで第１の設定時間Ｔ１は、たとえば数秒から十数秒程度の時間とする。ステップＳ４で電源制御部１０は電源スイッチ３をオフにすることで、照明手段を除く回路４への電力供給を遮断し、電源オフにする。 In step S1, the voltage detection unit 7 detects the voltage of the battery 1 and proceeds to step S2. In step S2, the first voltage comparison unit 8 compares the voltage of the battery 1 detected in step S1 with a preset first setting voltage V1, and if the battery voltage is lower than the first setting voltage V1. If the battery voltage is higher than the first set voltage V1 in step S3, the process proceeds to step S5.
In step S3, the first time measurement unit 9 continues to step S4 until the first set time T1 if the voltage of the battery 1 is lower than the first set voltage V1 until the first set time T1. If not, the process proceeds to step S5. Here, the first set time T1 is, for example, a time of about several seconds to several tens of seconds. In step S4, the power control unit 10 turns off the power switch 3, thereby cutting off the power supply to the circuit 4 excluding the illumination unit and turning off the power.

次に、ステップＳ５で、照明手段６が点灯していればステップＳ６に、照明手段が消灯していればステップＳ１に処理を進める。ステップＳ６で、第２の電圧比較部１１はステップＳ１で検出した電池１の電圧と、予め設定した第２の設定電圧Ｖ２とを比較し、電池電圧が第２の設定電圧Ｖ２より低ければステップＳ７に、電池電圧が第２の設定電圧Ｖ２より高ければステップＳ１に処理を進める。ステップＳ７で第２の時間測定部１２は、電池１の電圧が第２の設定電圧Ｖ２より低い状態が、第２の設定時間Ｔ２まで継続すればステップＳ８に、第２の設定時間Ｔ２まで継続しない場合は、ステップＳ１に処理を進める。ここで第２の設定時間Ｔ２は、第１の設定時間Ｔ１より短い、たとえば２０ｍｓ程度の時間である。ステップＳ８で、照明点灯制御部１３は照明スイッチ５をオフにすることで照明手段６のみを消灯し、ステップＳ１に処理を進める。   Next, in step S5, if the illumination unit 6 is turned on, the process proceeds to step S6. If the illumination unit is turned off, the process proceeds to step S1. In step S6, the second voltage comparison unit 11 compares the voltage of the battery 1 detected in step S1 with a preset second setting voltage V2, and if the battery voltage is lower than the second setting voltage V2, step is performed. If the battery voltage is higher than the second set voltage V2 in S7, the process proceeds to step S1. In step S7, the second time measuring unit 12 continues to step S8 until the second set time T2 if the voltage of the battery 1 is lower than the second set voltage V2 until the second set time T2. If not, the process proceeds to step S1. Here, the second set time T2 is shorter than the first set time T1, for example, about 20 ms. In step S8, the illumination lighting control unit 13 turns off the illumination switch 5 to turn off only the illumination unit 6, and proceeds to step S1.

ここで、図２では説明していないが、照明手段を除く回路４が、必要により、または使用者の操作により電源オフ処理をしたときは、電源制御部１０と照明点灯制御部１３とに対して電源スイッチ３と照明スイッチ５とをオフにするよう指示するものである。   Here, although not described in FIG. 2, when the circuit 4 excluding the illumination means performs a power-off process as necessary or by a user operation, the power supply control unit 10 and the illumination lighting control unit 13 are controlled. The power switch 3 and the illumination switch 5 are instructed to be turned off.

従来は、短時間の電圧低下を誤検出して機器が電源オフにならないように、電池１の電圧の、第１の設定電圧Ｖ１より低下した状態が、十分長く設定した第１の設定時時間Ｔ１まで継続した場合に機器の電源をオフにしていた。しかし、時間の長い第１の設定時間Ｔ１だけの規定では、ＬＥＤ等の照明点灯により大電流が流れた場合、急速に電池１の電圧が低下し、電池電圧が機器の動作可能な電圧を下回ってしまい、パワーダウンしてしまうことがある。   Conventionally, the first set time in which the state where the voltage of the battery 1 is lower than the first set voltage V1 is set sufficiently long so that the device does not turn off due to a false detection of a short-time voltage drop. The device was turned off when continuing to T1. However, in the rule of only the first set time T1 that is long, when a large current flows due to lighting of an LED or the like, the voltage of the battery 1 rapidly decreases, and the battery voltage falls below the voltage at which the device can operate. End up and power down.

そのため、本発明では、新たに第２の設定時間Ｔ２を設け、照明点灯時には、電池電圧が第２の設定電圧Ｖ２より低下した状態が、短く設定した第２の設定時間Ｔ２まで継続した場合に照明手段のみを消灯させるようにした。照明手段以外の回路４をオンオフする第１の設定時間Ｔ１が長く設定されているため、突発的な電圧低下で誤動作して電源をオフにすることを防止することができ、さらに、照明手段６をオンオフする第２の設定時間Ｔ２が短く設定されているため、照明点灯による電池電圧の低下時間が短くなり、電圧の低下を軽微に止めることができる。このため照明点灯時の急速な電圧低下によって機器がパワーダウンすることを防止するという作用を有する。   Therefore, in the present invention, a second set time T2 is newly provided, and when the lighting is turned on, the state where the battery voltage is lower than the second set voltage V2 continues until the short set second set time T2. Only the illumination means was turned off. Since the first set time T1 for turning on / off the circuit 4 other than the illumination means is set to be long, it is possible to prevent malfunction due to a sudden voltage drop and to turn off the power supply. Further, the illumination means 6 Since the second setting time T2 for turning on / off is set to be short, the battery voltage drop time due to lighting is shortened, and the voltage drop can be lightly stopped. For this reason, it has the effect | action of preventing that an apparatus is powered down by the rapid voltage drop at the time of lighting lighting.

ここで電源オフとは、機器が正常な電源切断作業を行って機器の動作を止めることを示し、パワーダウンとは、電池電圧の低下により、機器が正常な電源切断作業を行うことができずに機器の動作が止まってしまうことを示す。   Here, power off means that the device performs a normal power-off operation and stops the operation of the device. Power-down means that the device cannot perform a normal power-off operation due to a decrease in battery voltage. Shows that the operation of the equipment stops.

図３を用いて機器動作時の例を紹介する。図３は第２の設定電圧Ｖ２が第１の設定電圧Ｖ１より高く設定された場合の動作例を示した図であり、機器動作中における電池１の電圧低下と、照明手段を点灯した場合の電池１の電圧低下を表している。   An example of device operation will be introduced with reference to FIG. FIG. 3 is a diagram showing an operation example when the second set voltage V2 is set higher than the first set voltage V1, in the case where the voltage drop of the battery 1 during the operation of the device and when the illumination means is turned on. The voltage drop of the battery 1 is represented.

図３で機器動作中における電池１の電圧を４１、照明手段が点灯されている区間を区間４２、区間４３、区間４５で示す。区間４４、区間４５は電池１の電圧が第２の設定電圧V２より低下してから照明手段を消灯するまでの時間、すなわち第２の設定時間Ｔ２であり、区間４６は電池１の電圧が第１の設定電圧Ｖ１より低下してから電源がオフになるまでの時間、すなわち第１の設定時間Ｔ１であり、パワーダウン電圧４７は電池１の電圧がこの電圧より低下した場合に機器がパワーダウンしてしまう電圧である。   In FIG. 3, the voltage of the battery 1 during the operation of the device is indicated by 41, and the sections in which the illumination means are turned on are indicated by the sections 42, 43, and 45. Sections 44 and 45 are the time from when the voltage of the battery 1 drops below the second set voltage V2 to when the lighting means is turned off, that is, the second set time T2, and the section 46 has the voltage of the battery 1 at the first The time from when the voltage drops below the set voltage V1 to the time when the power is turned off, that is, the first set time T1, and the power down voltage 47 is the power down when the voltage of the battery 1 drops below this voltage. It is a voltage that will cause.

区間４２では、照明点灯時の電池１の電圧が第２の設定電圧Ｖ２より高いので、ＬＥＤは予め設定した長い時間点灯する。区間４３では、照明点灯中に電池１の電圧が第２の設定電圧Ｖ２より低下したため、電池電圧が第２の設定電圧Ｖ２より低下してから区間４４の第２の設定時間Ｔ２経過後に照明手段を消灯する。区間４５では、電池１の電圧が第２の設定電圧Ｖ２より低下している状態から点灯を開始したので、第２の設定時間Ｔ２経過後に照明手段を消灯する。区間４６では電池１の電圧が第１の設定電圧Ｖ１より低下したので、第１の設定時間Ｔ１経過後に機器の電源をオフにする。仮に電池１の電圧がパワーダウン電圧４７より低下した場合、機器がパワーダウンしてしまうので、第１の設定電圧Ｖ１はパワーダウン電圧４７より高い電圧に設定し、時間Ｔ１が経過するまでパワーダウン電圧４７まで低下しないこと、また第２の設定電圧Ｖ２は照明点灯時の電池電圧が時間Ｔ２が経過するまでパワーダウン電圧４７より低下しないように設定する必要がある。   In the section 42, since the voltage of the battery 1 at the time of lighting is higher than the second set voltage V2, the LED is lit for a long time set in advance. In the section 43, since the voltage of the battery 1 is lower than the second set voltage V2 while the lighting is on, the illumination unit is turned on after the second set time T2 of the section 44 has elapsed since the battery voltage has dropped from the second set voltage V2. Turn off the light. In the section 45, since the lighting is started from the state in which the voltage of the battery 1 is lower than the second set voltage V2, the lighting unit is turned off after the second set time T2 elapses. In the section 46, the voltage of the battery 1 is lower than the first set voltage V1, so the power of the device is turned off after the first set time T1 has elapsed. If the voltage of the battery 1 is lower than the power-down voltage 47, the device will be powered down. Therefore, the first set voltage V1 is set to a voltage higher than the power-down voltage 47, and the power is reduced until the time T1 elapses. It is necessary that the second set voltage V2 does not decrease to the voltage 47 and that the battery voltage at the time of lighting is set not to decrease below the power-down voltage 47 until the time T2 has elapsed.

なお、実施の形態１においては第２の設定電圧Ｖ２を第１の設定電圧Ｖ１より高い、とした場合を示したが、第１の設定電圧Ｖ１と第２の設定電圧Ｖ２とを同じ電圧、もしくは、第２の設定電圧Ｖ2を第１の設定電圧Ｖ１より低く設定しても差しつかえない。   In the first embodiment, the second set voltage V2 is higher than the first set voltage V1, but the first set voltage V1 and the second set voltage V2 are the same voltage, Alternatively, the second set voltage V2 may be set lower than the first set voltage V1.

（実施の形態２）
図４は本発明の実施の形態２における照明手段と電源制御部と照明点灯制御部を有する電池駆動機器における電源装置の処理の流れを示すフローチャートであり、実施の形態１のフローチャート図２に照明点滅機能を追加したものである。機器の構成は図１と同様で、詳しくいえば照明点灯制御部１３の動作が異なるものである。図２と同じ動作については同じ符号で示す。 (Embodiment 2)
FIG. 4 is a flowchart showing a flow of processing of the power supply device in the battery-powered device having the illumination means, the power supply control unit, and the illumination lighting control unit in the second embodiment of the present invention. A flashing function is added. The configuration of the device is the same as that shown in FIG. The same operations as those in FIG. 2 are denoted by the same reference numerals.

ステップＳ１で、電圧検出部７は電池１の電圧を測定しＳ２に処理を進める。ステップＳ２で、第１の電圧比較部８はステップＳ１で検出した電池１の電圧と、予め設定した第１の設定電圧Ｖ１とを比較し、電池電圧が第１の設定電圧Ｖ１より低ければステップＳ３に、電池電圧が第１の設定電圧Ｖ１より高ければステップＳ５に処理を進める。ステップＳ３で第１の時間測定部９は、電池１の電圧が第１の設定電圧Ｖ１より低い状態が、第１の設定時間Ｔ１まで継続すればステップＳ９に、第１の設定時間Ｔ１まで継続しない場合は、ステップＳ５に処理を進める。ステップＳ９で照明点灯制御部１３は照明スイッチ５により照明手段６を所定回数点滅させることで、電源をオフにすることを警告し、ステップＳ４に処理を進める。ステップＳ４で電源制御部１０は電源スイッチ３をオフにすることで、照明手段を除く回路４への電力供給を遮断し、電源オフにする。   In step S1, the voltage detector 7 measures the voltage of the battery 1 and advances the process to S2. In step S2, the first voltage comparison unit 8 compares the voltage of the battery 1 detected in step S1 with a preset first setting voltage V1, and if the battery voltage is lower than the first setting voltage V1, the step is performed. If the battery voltage is higher than the first set voltage V1 in S3, the process proceeds to step S5. In step S3, the first time measuring unit 9 continues to step S9 until the first set time T1 if the voltage of the battery 1 is lower than the first set voltage V1 until the first set time T1. If not, the process proceeds to step S5. In step S9, the illumination lighting control unit 13 warns that the power is turned off by blinking the illumination means 6 by the illumination switch 5 a predetermined number of times, and proceeds to step S4. In step S4, the power control unit 10 turns off the power switch 3, thereby cutting off the power supply to the circuit 4 excluding the illumination unit and turning off the power.

次に、ステップＳ５で、照明手段６が点灯していればステップＳ６に、照明手段が消灯していればステップＳ１に処理を進める。ステップＳ６で、第２の電圧比較部１１はステップＳ１で検出した電池１の電圧と、予め設定した第２の設定電圧Ｖ２とを比較し、電池電圧が第２の設定電圧Ｖ２より低ければステップＳ７に、電池電圧が第２の設定電圧Ｖ２より高ければステップＳ１に処理を進める。ステップＳ７で第２の時間測定部１２は、電池１の電圧が第２の設定電圧Ｖ２より低い状態が、第２の設定時間Ｔ２まで継続すればステップＳ８に、第２の設定時間Ｔ２まで継続しない場合は、ステップＳ１に処理を進める。 ステップＳ８で、照明点灯制御部１３は照明スイッチ５をオフすることで照明手段６のみを消灯し、ステップＳ１に処理を進める。   Next, in step S5, if the illumination unit 6 is turned on, the process proceeds to step S6. If the illumination unit is turned off, the process proceeds to step S1. In step S6, the second voltage comparison unit 11 compares the voltage of the battery 1 detected in step S1 with a preset second setting voltage V2, and if the battery voltage is lower than the second setting voltage V2, step is performed. If the battery voltage is higher than the second set voltage V2 in S7, the process proceeds to step S1. In step S7, the second time measuring unit 12 continues to step S8 until the second set time T2 if the voltage of the battery 1 is lower than the second set voltage V2 until the second set time T2. If not, the process proceeds to step S1. In step S8, the illumination lighting control unit 13 turns off the illumination switch 5 to turn off only the illumination unit 6, and proceeds to step S1.

上記のように機器を動作させることで、実施の形態１の機能に加えて、電源がオフになる前に照明手段を点滅させることで機器が電源オフになることを予め知らせることができる。   By operating the device as described above, in addition to the function of the first embodiment, it is possible to notify in advance that the device is turned off by blinking the illumination means before the power is turned off.

本発明の電源装置によれば、照明点灯により大電流が流れた際に、急速な電圧低下で機器がパワーダウンすることを防止し、さらに、突発的な電圧低下で誤動作して機器の電源がオフになることを防止することが可能になるため、ＬＥＤ等の照明手段を有するオーディオ機器、携帯情報機器、携帯電話機、カメラ等の電気製品に広く適用できる。   According to the power supply device of the present invention, when a large current flows due to lighting, the device is prevented from being powered down due to a rapid voltage drop. Since it can be prevented from being turned off, it can be widely applied to electrical products such as audio devices, portable information devices, mobile phones, cameras, and the like having illumination means such as LEDs.

本発明の実施の形態１における電源装置の各部の機能を示すブロック図The block diagram which shows the function of each part of the power supply device in Embodiment 1 of this invention 同電源装置の処理の流れを示すフローチャートFlow chart showing the flow of processing of the power supply device 同実施の形態１において第２の設定電圧V２を第１の設定電圧V１より高く設定した場合の動作例を示す図The figure which shows the operation example at the time of setting the 2nd setting voltage V2 higher than the 1st setting voltage V1 in Embodiment 1 同実施の形態２における電源装置の処理の流れを示すフローチャートThe flowchart which shows the flow of a process of the power supply device in the same Embodiment 2. 従来の照明手段を有する電池駆動機器の構成を示すブロック図The block diagram which shows the structure of the battery drive apparatus which has the conventional illumination means 同照明手段が点灯したときの消費電力増加を示す図The figure which shows the power consumption increase when the illumination means lights 同照明手段が点灯したときの電池電圧の低下を示す図The figure which shows the fall of battery voltage when the illumination means lights

符号の説明Explanation of symbols

１ 電池
２ 電源回路
３ 電源スイッチ
４ 照明手段を除く回路
５ 照明スイッチ
６ 照明手段
７ 電池電圧検出部
８ 第１の電圧比較部
９ 第１の時間測定部
１０ 電源制御部
１１ 第２の電圧比較部
１２ 第２の時間測定部
１３ 照明点灯制御部 DESCRIPTION OF SYMBOLS 1 Battery 2 Power supply circuit 3 Power switch 4 Circuit except an illumination means 5 Illumination switch 6 Illumination means 7 Battery voltage detection part 8 1st voltage comparison part 9 1st time measurement part 10 Power supply control part 11 2nd voltage comparison part 12 Second time measurement unit 13 Illumination lighting control unit

Claims (4)

照明点灯操作により一定時間点灯する照明手段を有する電池駆動機器において、
電池電圧が予め設定した第１の設定電圧V１より低下した状態が予め設定した第１の設定時間T１まで継続した場合に電源をオフにするための電源制御部と、
電池電圧が予め設定した第２の設定電圧V２より低下した状態が予め設定した第２の設定時間T２まで継続した場合に照明手段を消灯するための照明点灯制御部とを有することを特徴とする電源装置。 In battery-powered equipment having lighting means that lights for a certain time by lighting lighting operation,
A power supply control unit for turning off the power supply when the battery voltage is lower than the preset first set voltage V1 until the preset first set time T1,
And an illumination lighting control unit for turning off the illumination means when the state where the battery voltage is lower than the preset second set voltage V2 continues until the preset second set time T2. Power supply. 前記電源制御部が電源をオフにするに先立って前記照明点灯制御部により照明手段を点滅させることを特徴とする請求項１記載の電源装置。 2. The power supply device according to claim 1, wherein the illumination lighting control unit causes the illumination unit to blink before the power supply control unit turns off the power. 第２の設定電圧V２が第１の設定電圧V１より高いことを特徴とする請求項１または２記載の電源装置。 The power supply device according to claim 1 or 2, wherein the second set voltage V2 is higher than the first set voltage V1. 第２の設定電圧V２が第１の設定電圧V１と等しいことを特徴とする請求項１または２記載の電源装置。 3. The power supply device according to claim 1, wherein the second set voltage V2 is equal to the first set voltage V1.
JP2005333935A 2005-11-18 2005-11-18 Power source device Pending JP2007141653A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020057452A (en) * 2018-09-28 2020-04-09 東芝ライテック株式会社 Electric power unit and luminaire

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020057452A (en) * 2018-09-28 2020-04-09 東芝ライテック株式会社 Electric power unit and luminaire
JP7067396B2 (en) 2018-09-28 2022-05-16 東芝ライテック株式会社 Power supply and lighting

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