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JP5216833B2 - Electrical equipment and program - Google Patents
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JP5216833B2 - Electrical equipment and program - Google Patents

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JP5216833B2
JP5216833B2 JP2010248954A JP2010248954A JP5216833B2 JP 5216833 B2 JP5216833 B2 JP 5216833B2 JP 2010248954 A JP2010248954 A JP 2010248954A JP 2010248954 A JP2010248954 A JP 2010248954A JP 5216833 B2 JP5216833 B2 JP 5216833B2
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temperature
housing
insects
electric heater
circuit board
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JP2012103751A (en
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国誠 長弓
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Toshiba Tec Corp
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Description

この発明の実施形態は、通気孔が形成された筐体を持つ電気機器およびそのプログラムに関する。 Embodiments described herein relate generally to an electric device having a casing in which a vent hole is formed and a program thereof .

電子式キャッシュレジスタ、POSターミナル、パーソナルコンピュータ等の電気機器は、回路基板およびその回路基板上の電気部品を通気孔が形成された筐体で被っている。この筐体の中は温かいため、しばしば、蠅、蚊、ゴキブリなどの虫が通気孔を通って筐体内に侵入することがある。   An electric device such as an electronic cash register, a POS terminal, or a personal computer covers a circuit board and electric components on the circuit board with a casing formed with a vent hole. Because this enclosure is warm, insects such as moths, mosquitoes and cockroaches often enter the enclosure through the vents.

筐体内に侵入した虫が回路基板上の電気配線に触れると、電気配線が短絡することがある。侵入した虫が高温の電気部品に触れると、その熱で虫が焼け焦げることもある。   When an insect that has entered the housing touches the electrical wiring on the circuit board, the electrical wiring may be short-circuited. When an invading insect touches a hot electrical component, the insect may be burnt by the heat.

対策として、筐体内の回路基板上に虫の接触を検知するセンサを設け、センサが虫を検知した場合にその旨を報知するものがある(例えば特許文献1)。   As a countermeasure, there is one that provides a sensor for detecting contact of insects on a circuit board in a housing and notifies that when the sensor detects insects (for example, Patent Document 1).

特開2000―147133号公報JP 2000-147133 A

この発明の実施形態の目的は、筐体内に侵入した虫を筐体の外へ追いやることができ、これにより電気配線の短絡や虫の焼け焦げなどの不具合を解消できる安全性にすぐれた電気機器およびそのプログラムを提供することである。 The purpose of embodiments of the invention, the insects that have entered into the housing can be relegated to the outer casing, thereby electrical equipment and excellent in safety can be solved problems such as scorching of the short circuit and insects electric wiring To provide that program .

この発明の実施形態の電気機器は、回路基板およびその回路基板上の電気部品を被う筐体と、この筐体内に設けた電気ヒータと、前記筐体内への虫の侵入を検知する検知手段と、前記筐体内の雰囲気温度を検知する温度検知手段と、前記検知手段が虫の侵入を検知した場合に、予め定められた一定時間にわたり、前記温度検知手段の検知温度が設定値以上に上昇するまで前記電気ヒータを動作させ、続いて前記温度検知手段の検知温度が設定値を保つよう前記電気ヒータの動作をオン,オフ制御する制御手段と、を備える。 An electrical apparatus according to an embodiment of the present invention includes a circuit board and a casing that covers the electrical components on the circuit board, an electric heater provided in the casing, and a detection unit that detects the invasion of insects into the casing. And a temperature detection means for detecting the ambient temperature in the housing , and when the detection means detects the invasion of insects, the detection temperature of the temperature detection means rises above a set value over a predetermined time period. Control means for controlling the operation of the electric heater to be turned on and off so that the electric heater is operated until the detected temperature is maintained, and the temperature detected by the temperature detecting means is maintained at a set value .

一実施形態の要部の構成を示す斜視図。The perspective view which shows the structure of the principal part of one Embodiment. 一実施形態の制御回路のブロック図。The block diagram of the control circuit of one Embodiment. 一実施形態の動作を説明するためのフローチャート。The flowchart for demonstrating operation | movement of one Embodiment.

以下、この発明の一実施形態を説明する。
図1に示すように、回路基板1にCPU2が配置され、そのCPU2上にヒートシンク3が取付けられている。回路基板1には、さらに温度センサ(温度検知手段)4および後述の制御回路の各種電気部品が配置され、その各種電気部品およびCPU2がリード線や導電パターンなどで電気的に配線接続される。
An embodiment of the present invention will be described below.
As shown in FIG. 1, a CPU 2 is disposed on a circuit board 1, and a heat sink 3 is attached on the CPU 2. The circuit board 1 is further provided with a temperature sensor (temperature detecting means) 4 and various electrical components of a control circuit described later, and the various electrical components and the CPU 2 are electrically connected by lead wires or conductive patterns.

これら回路基板1、CPU2、各種電気部品、および電気配線が筐体10で被われて、電子式キャッシュレジスタ、POSターミナル、パーソナルコンピュータ等の電気機器が構成される。上記温度センサ4は、筐体10内の雰囲気温度Taを検知する。   The circuit board 1, CPU 2, various electrical components, and electrical wiring are covered with a housing 10 to constitute an electrical device such as an electronic cash register, a POS terminal, and a personal computer. The temperature sensor 4 detects the ambient temperature Ta in the housing 10.

そして、筐体10の側面部10aに通気孔11が形成され、その通気孔11の内側に、かつ通気孔11を挟んで相対向する状態に、赤外線発光器20aおよび赤外線受光器20bが配設される。通気孔11に何も侵入しなければ赤外線発光器20aから発せられる赤外線光が赤外線受光器20bで受光され、通気孔11に何らかの物体が侵入すると赤外線発光器20aと赤外線受光器20bとの間の光路が遮られる。この赤外線発光器20aおよび赤外線受光器20bにより、通気孔11に侵入する虫を光学的に検知する虫侵入検知器(検知手段)20が構成される。   A vent hole 11 is formed in the side surface portion 10 a of the housing 10, and the infrared emitter 20 a and the infrared receiver 20 b are disposed inside the vent hole 11 and facing each other across the vent hole 11. Is done. If nothing enters the vent hole 11, infrared light emitted from the infrared light emitter 20a is received by the infrared light receiver 20b. If any object enters the vent hole 11, the infrared light is emitted between the infrared light emitter 20a and the infrared light receiver 20b. The light path is blocked. The infrared light emitter 20a and the infrared light receiver 20b constitute an insect intrusion detector (detecting means) 20 that optically detects insects that enter the vent hole 11.

また、筐体10の背面部10bに排気口12が形成され、その排気口12の内側に排気ファン14が配設される。排気ファン14が動作すると、筐体10の外の空気が通気孔11を通って筐体10内に吸込まれ、その吸込み空気がヒートシンク3から熱を奪い、そのヒートシンク3を経た空気が排気口12から筐体10外に排出される。   Further, an exhaust port 12 is formed in the back surface portion 10 b of the housing 10, and an exhaust fan 14 is disposed inside the exhaust port 12. When the exhaust fan 14 operates, air outside the housing 10 is sucked into the housing 10 through the vent hole 11, and the sucked air takes heat from the heat sink 3, and the air passing through the heat sink 3 is exhausted 12. To the outside of the housing 10.

また、筐体10の上記背面部10bおよび別の側面部10cの内側にシート状の電気ヒータ31,32がそれぞれ貼り付けられる。これら電気ヒータ31,32が動作すると、その発熱によって筐体10の内部温度が上昇する。   In addition, sheet-like electric heaters 31 and 32 are attached to the inside of the back surface portion 10b and the other side surface portion 10c of the housing 10, respectively. When these electric heaters 31 and 32 operate, the internal temperature of the housing 10 rises due to the generated heat.

制御回路の要部を図2に示す。
商用交流電源40に電源回路41が接続され、その電源回路41の出力端に上記排気ファン13のモータ13Mが接続される。さらに、電源回路41の出力端にリレー接点54aを介して上記電気ヒータ31,32が接続される。
The main part of the control circuit is shown in FIG.
A power supply circuit 41 is connected to the commercial AC power supply 40, and the motor 13 </ b> M of the exhaust fan 13 is connected to the output terminal of the power supply circuit 41. Further, the electric heaters 31 and 32 are connected to the output end of the power supply circuit 41 via a relay contact 54a.

また、上記CPU2に、チップセット50を介して、ハードウェア初期化用のBIOS51、ハードディスクドライブ(HDD)52、メインメモリ53、リレー54、上記温度センサ4、上記虫侵入検知器20が接続される。ハードディスクドライブ52には、CPU2の制御に必要なオペレーションシステム(OS)およびアプリケーションプログラム(APL)が記憶されている。メインメモリ53は、プログラムおよび処理データの記憶に用いられる。   Also, a BIOS 51 for hardware initialization, a hard disk drive (HDD) 52, a main memory 53, a relay 54, the temperature sensor 4, and the insect intrusion detector 20 are connected to the CPU 2 via a chipset 50. . The hard disk drive 52 stores an operation system (OS) and an application program (APL) necessary for the control of the CPU 2. The main memory 53 is used for storing programs and processing data.

そして、CPU2は、メインメモリ53内のプログラムに基づく主要な機能として、次の(1)の手段を有する。
(1)虫侵入検知器20が虫の侵入を検知した場合に、予め定められた一定時間にわたり、温度センサ4の検知温度Taが設定値Tsたとえば50℃以上に上昇するまで電気ヒータ31,32を動作させ、続いて温度センサ4の検知温度Taが設定値Tsを保つよう電気ヒータ31,32の動作をオン,オフ制御する制御手段。
The CPU 2 has the following means (1) as a main function based on the program in the main memory 53.
(1) When the insect intrusion detector 20 detects the invasion of an insect, the electric heaters 31 and 32 are detected until the detected temperature Ta of the temperature sensor 4 rises to a set value Ts, for example, 50 ° C. or more over a predetermined time. The control means for controlling the operation of the electric heaters 31 and 32 so that the detected temperature Ta of the temperature sensor 4 maintains the set value Ts.

つぎに、図3のフローチャートを参照しながら動作について説明する。
筐体10の通気孔11に蠅、蚊、ゴキブリなどの虫が侵入すると、それを虫侵入検知器20が検知する(ステップ101のYES)。このとき、タイムカウントtが開始され(ステップ102)、タイムカウントtと一定時間t1とが比較される(ステップ103)。
Next, the operation will be described with reference to the flowchart of FIG.
When insects such as moths, mosquitoes and cockroaches enter the vent hole 11 of the housing 10, the insect intrusion detector 20 detects it (YES in step 101). At this time, the time count t is started (step 102), and the time count t is compared with the fixed time t1 (step 103).

タイムカウントtが一定時間t1未満であれば(ステップ103のNO)、リレー54が付勢されてその接点54aが閉じ、これにより電気ヒータ31,32が動作オンする(ステップ104)。この電気ヒータ31,32の発熱により、筐体10の内部温度が上昇していく。   If the time count t is less than the predetermined time t1 (NO in step 103), the relay 54 is energized to close the contact 54a, thereby turning on the electric heaters 31 and 32 (step 104). Due to the heat generated by the electric heaters 31 and 32, the internal temperature of the housing 10 increases.

筐体10内の雰囲気温度が温度センサ4によって検知されており、その検知温度Taが上昇して設定値Ts以上になると(ステップ105のYES)、リレー54が消勢されて接点54aが開き、これにより電気ヒータ31,32の動作がオフする(ステップ106)。そして、温度センサ4の検知温度Taと設定値TsよりΔTだけ低い所定値(=Ts−ΔT)とが比較される(ステップ107)。   When the ambient temperature in the housing 10 is detected by the temperature sensor 4 and the detected temperature Ta rises to be equal to or higher than the set value Ts (YES in Step 105), the relay 54 is de-energized and the contact 54a is opened. Thereby, the operation of the electric heaters 31 and 32 is turned off (step 106). Then, the detected temperature Ta of the temperature sensor 4 is compared with a predetermined value (= Ts−ΔT) lower than the set value Ts by ΔT (step 107).

温度センサ4の検知温度Taが所定値(Ts−ΔT)以上の場合は(ステップ107のNO)、電気ヒータ31,32の動作オフが継続する。   When the detected temperature Ta of the temperature sensor 4 is equal to or higher than a predetermined value (Ts−ΔT) (NO in step 107), the operation of the electric heaters 31 and 32 continues to be turned off.

温度センサ4の検知温度Taが所定値(=Ts−ΔT)未満に下がったとき(ステップ107のYES)、タイムカウントtが一定時間t1に達していなければ(ステップ103のNO)、電気ヒータ31,32が再び動作オンする(ステップ104)。   When the detected temperature Ta of the temperature sensor 4 falls below a predetermined value (= Ts−ΔT) (YES in step 107), if the time count t has not reached the predetermined time t1 (NO in step 103), the electric heater 31 32 are turned on again (step 104).

こうして、タイムカウントtが一定時間t1に達するまで、電気ヒータ31,32がオン,オフ動作し、温度センサ4の検知温度Taがほぼ設定値Tsに保たれる。   Thus, until the time count t reaches the predetermined time t1, the electric heaters 31 and 32 are turned on and off, and the detected temperature Ta of the temperature sensor 4 is kept substantially at the set value Ts.

タイムカウントtが一定時間t1に達すると(ステップ103のYES)、タイムカウントtがクリアされ(ステップ108)、虫侵入検知器20による虫の侵入検知待ちとなる(ステップ101)。   When the time count t reaches the predetermined time t1 (YES in Step 103), the time count t is cleared (Step 108), and the insect intrusion detector 20 waits for detection of insect intrusion (Step 101).

筐体10内の雰囲気温度が50℃以上に上昇すると、侵入した虫にとっては筐体10内にとどまることが辛い状況となり、虫は筐体10内に居られなくなって通気孔11から外に逃げ出す。   When the atmospheric temperature in the housing 10 rises to 50 ° C. or more, it becomes difficult for the invading insect to stay in the housing 10, and the insect can no longer stay in the housing 10 and escapes from the vent hole 11. .

逃げ出す虫は虫侵入検知器20で再び検知されるが、この再検知とは無関係に、少なくとも上記一定時間t1は電気ヒータ31,32のオン,オフ動作が継続する。逃げ出しの再検知が一定時間t1の経過後であれば、電気ヒータ31,32の動作が再び開始されることになるが、それが他に悪影響を及ぼすことはない。   The insect that escapes is detected again by the insect intrusion detector 20, but the on / off operation of the electric heaters 31 and 32 continues for at least the predetermined time t1 regardless of this redetection. If the re-detection of the escape is after the elapse of the predetermined time t1, the operation of the electric heaters 31 and 32 is started again, but it does not adversely affect others.

回路基板1上のCPU2をはじめとする電気部品の耐熱温度は100℃以上であり、電気ヒータ31,32の発熱がこれら電気部品に悪影響を及ぼすことはない。   The heat resistant temperature of the electrical components including the CPU 2 on the circuit board 1 is 100 ° C. or higher, and the heat generated by the electrical heaters 31 and 32 does not adversely affect these electrical components.

以上のように、筐体10に侵入する虫を検知して筐体10内の雰囲気温度を虫にとって辛い高温度に高めることにより、筐体10内に侵入した虫を筐体10の外へ追いやることができる。これにより、電気配線に虫が触れて電気配線が短絡する不具合を解消できるとともに、虫が高温の電気部品に触れて焼け焦げる不具合も解消でき、当該電気機器の安全性が大幅に向上する。   As described above, by detecting insects that enter the housing 10 and increasing the atmospheric temperature in the housing 10 to a high temperature that is difficult for insects, the insects that have entered the housing 10 are driven out of the housing 10. be able to. As a result, it is possible to eliminate the problem of insects touching the electrical wiring and short-circuiting the electrical wiring, as well as the problem of insects touching hot electrical components and scorching, and the safety of the electrical equipment is greatly improved.

虫の侵入を阻むことだけを考えれば、商用交流電源40の投入から遮断まで電気ヒータ31,32を常に動作させてもよいが、上記のように、虫の侵入を検知してから電気ヒータ31,32を動作させるほうが、さらには、虫の侵入を検知してから電気ヒータ31,32を動作させそのオン,オフ動作に一定時間t1の制限を持たせるほうが、消費電力が少なくなり、省エネルギー性が向上する。   If only considering preventing insects from entering, the electric heaters 31 and 32 may always be operated from turning on and off the commercial AC power supply 40. However, as described above, the electric heaters 31 are detected after detecting insects entering. , 32 is operated, and further, when detecting the invasion of insects, the electric heaters 31, 32 are operated, and the on / off operation thereof is limited for a predetermined time t 1, thereby reducing power consumption and energy saving. Will improve.

なお、上記実施形態では、虫の侵入を光学的に検知したが、その検知方法に限定はない。また、設定値Tsを50℃としたが、虫が辛くなる温度であれば、50℃に限らない。虫の侵入検知に際し、電気ヒータ31,32を動作させることに加え、例えば、筐体10内で虫が嫌う強い光を点滅したり、虫に聴こえて人間には聴こえない高周波音を発してもよい。   In addition, in the said embodiment, although the invasion of the insect was detected optically, there is no limitation in the detection method. Moreover, although the set value Ts is 50 ° C., the temperature is not limited to 50 ° C. as long as the temperature makes the insects spicy. In addition to operating the electric heaters 31 and 32 when detecting the invasion of insects, for example, flashing strong light that insects dislike in the housing 10 or generating high-frequency sounds that can be heard by insects but cannot be heard by humans Good.

その他、上記実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。この新規な実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、書き換え、変更を行うことができる。この実施形態や変形は、発明の範囲は要旨に含まれるとともに、特許請求の範囲に記載された発明とその均等の範囲に含まれる。   In addition, the said embodiment is shown as an example and is not intending limiting the range of invention. The novel embodiment can be implemented in various other forms, and various omissions, rewrites, and changes can be made without departing from the spirit of the invention. The scope of the invention is included in the gist of the embodiments and modifications, and is included in the invention described in the claims and the equivalent scope thereof.

1…回路基板、2…CPU、3…ヒートシンク、4…温度センサ、10…筐体、11…通気孔、12…排気口、13…排気ファン、20…虫侵入検知器、20a…赤外線発光器、20b…赤外線受光器、31,32…電気ヒータ、40…商用交流電源、41…電源回路、50…チップセット、54…リレー   DESCRIPTION OF SYMBOLS 1 ... Circuit board, 2 ... CPU, 3 ... Heat sink, 4 ... Temperature sensor, 10 ... Housing | casing, 11 ... Vent, 12 ... Exhaust port, 13 ... Exhaust fan, 20 ... Bug intrusion detector, 20a ... Infrared light emitter 20b: Infrared light receiver, 31, 32 ... Electric heater, 40 ... Commercial AC power supply, 41 ... Power supply circuit, 50 ... Chipset, 54 ... Relay

Claims (2)

回路基板およびその回路基板上の電気部品を被う筐体と、
この筐体内に設けた電気ヒータと、
前記筐体内への虫の侵入を検知する検知手段と、
前記筐体内の雰囲気温度を検知する温度検知手段と、
前記検知手段が虫の侵入を検知した場合に、予め定められた一定時間にわたり、前記温度検知手段の検知温度が設定値以上に上昇するまで前記電気ヒータを動作させ、続いて前記温度検知手段の検知温度が設定値を保つよう前記電気ヒータの動作をオン,オフ制御する制御手段と、
を備える電気機器。
A housing that covers the circuit board and electrical components on the circuit board;
An electric heater provided in the housing;
Detection means for detecting the invasion of insects into the housing;
Temperature detecting means for detecting the ambient temperature in the housing;
When the detection means detects the invasion of insects, the electric heater is operated until a detection temperature of the temperature detection means rises to a set value or higher for a predetermined time , and then the temperature detection means Control means for on / off control of the operation of the electric heater so that the detected temperature maintains a set value ;
Electrical equipment comprising.
回路基板およびその回路基板上の電気部品を被う筐体と、この筐体内に設けた電気ヒータと、前記筐体内への虫の侵入を検知する検知手段と、前記筐体内の雰囲気温度を検知する温度検知手段と、コンピュータとを備えた電気機器において、
前記コンピュータに、
前記検知手段が虫の侵入を検知した場合に、予め定められた一定時間にわたり、前記温度検知手段の検知温度が設定値以上に上昇するまで前記電気ヒータを動作させ、続いて前記温度検知手段の検知温度が設定値を保つよう前記電気ヒータの動作をオン,オフ制御する機能を持たせる、
ことを特徴とする電気機器のプログラム。
A casing that covers the circuit board and the electrical components on the circuit board, an electric heater provided in the casing, a detecting means for detecting the invasion of insects into the casing, and an ambient temperature in the casing In an electrical device comprising a temperature detecting means and a computer,
In the computer,
When the detection means detects the invasion of insects, the electric heater is operated until a detection temperature of the temperature detection means rises to a set value or higher for a predetermined time , and then the temperature detection means Provide a function to turn on and off the operation of the electric heater so that the detected temperature maintains a set value .
An electrical equipment program characterized by the above.
JP2010248954A 2010-11-05 2010-11-05 Electrical equipment and program Expired - Fee Related JP5216833B2 (en)

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