JPH0168584U - - Google Patents

Info

Publication number
JPH0168584U
JPH0168584U JP1987165132U JP16513287U JPH0168584U JP H0168584 U JPH0168584 U JP H0168584U JP 1987165132 U JP1987165132 U JP 1987165132U JP 16513287 U JP16513287 U JP 16513287U JP H0168584 U JPH0168584 U JP H0168584U
Authority
JP
Japan
Prior art keywords
voltage
section
reference voltage
transformer
switching section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP1987165132U
Other languages
English (en)
Other versions
JPH0517750Y2 (ja
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1987165132U priority Critical patent/JPH0517750Y2/ja
Publication of JPH0168584U publication Critical patent/JPH0168584U/ja
Application granted granted Critical
Publication of JPH0517750Y2 publication Critical patent/JPH0517750Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Audible And Visible Signals (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Dc-Dc Converters (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Description

【図面の簡単な説明】
第1図及び第2図は、本考案にかかるLED点
灯ユニツトの実施例の説明図であつて、第1図は
LED点灯ユニツトの電気的構成図、第2図は収
納ケースが接続されている様子を併せて示す記名
表示灯の一部切欠断面図である。 A……LED点灯ユニツト、10……スイツチ
ング部、20……電圧検出部、30……基準電圧
発生部、40……比較部、50……トランス、6
0……LED、70……入力端子、E……直流電
圧、E……基準電圧、E……一次側電圧。

Claims (1)

    【実用新案登録請求の範囲】
  1. 入力端子間に通電された直流電圧をスイツチン
    グさせるとともにトランスを介して電力伝達させ
    、この二次側に接続したLEDを点灯させるLE
    D点灯ユニツトであつて、前記直流電圧をスイツ
    チングせしめ、これを前記トランスの一次側電圧
    として与えるスイツチング部と、前記トランスの
    一次側電圧を分圧し、これを検出する電圧検出部
    と、前記直流電圧に基づいて前記スイツチング部
    をアクテイブ状態にする基準電圧を発生する基準
    電圧発生部と、前記基準電圧と前記電圧検出部の
    検出結果とを比較し、この比較結果に基づいて前
    記スイツチング部を非アクテイブ状態にする比較
    部とを具備することを特徴とするLED点灯ユニ
    ツト。
JP1987165132U 1987-10-28 1987-10-28 Expired - Lifetime JPH0517750Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987165132U JPH0517750Y2 (ja) 1987-10-28 1987-10-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987165132U JPH0517750Y2 (ja) 1987-10-28 1987-10-28

Publications (2)

Publication Number Publication Date
JPH0168584U true JPH0168584U (ja) 1989-05-02
JPH0517750Y2 JPH0517750Y2 (ja) 1993-05-12

Family

ID=31451340

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987165132U Expired - Lifetime JPH0517750Y2 (ja) 1987-10-28 1987-10-28

Country Status (1)

Country Link
JP (1) JPH0517750Y2 (ja)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5136660U (ja) * 1974-09-12 1976-03-18
JPS5240995A (en) * 1975-09-29 1977-03-30 Kyodo Micro Ranpu Kk Pulural-distribution luminescent diode lighting equipment

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5136660U (ja) * 1974-09-12 1976-03-18
JPS5240995A (en) * 1975-09-29 1977-03-30 Kyodo Micro Ranpu Kk Pulural-distribution luminescent diode lighting equipment

Also Published As

Publication number Publication date
JPH0517750Y2 (ja) 1993-05-12

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