JP3972395B2

JP3972395B2 - Ceiling light fixture with infrared sensor

Info

Publication number: JP3972395B2
Application number: JP35971096A
Authority: JP
Inventors: 光晴小菅
Original assignee: 日立ライティング株式会社
Priority date: 1996-12-20
Filing date: 1996-12-20
Publication date: 2007-09-05
Anticipated expiration: 2016-12-20
Also published as: JPH10188660A

Description

【０００１】
【発明の属する技術分野】
本発明は、器具本体を備え、それを下側から覆う透光カバーを備え、前記器具本体に配置された点灯制御用の赤外線センサを備え、該赤外線センサと前記透光カバーのセンサ窓を合わせるようにした赤外線センサ付天井照明器具に関するものである。
【０００２】
【従来の技術】
公知の赤外線センサ付天井照明器具は、天井面に装着される器具本体を備える。前記器具本体を下側から覆い上端開口周縁が該器具本体の外周部に着脱自在に当接する透光カバーを備える。前記器具本体の中央下方部に配置された点灯制御用の赤外線センサを備える。前記透光カバーの下部中央に前記赤外線センサと近接し該赤外線センサの一部をカバー下方に突出させるセンサ窓を設ける。
【０００３】
【発明が解決しようとする課題】
前記従来の赤外線センサ付天井照明器具においては、器具本体に対する透光カバーの位置決めが精密でない。このため、赤外線センサとセンサ窓との対応関係が悪く、それが不自然にずれ過ぎて赤外線センサの指向性に制約を与え、あるいは商品価値を損なうことがある。
本発明は、赤外線センサとセンサ窓を簡単に的確に位置決めする構造を提案し、指向性上の制約ないしは商品価値低下の弊害を除いたものである。
【０００４】
【課題を解決するための手段】
本発明においては、透光カバーの上端開口周縁部に上方に行くに従ってすぼまる形態の逆テーパー外周面を形成する。また、器具本体の外周部に前記逆テーパー外周面と密着する逆テーパー内周面を形成する。
以上の逆テーパー外周面・逆テーパー内周面を密着させて透光カバーないしはセンサ窓の的確な位置決めをはかる。
【０００５】
【発明の実施の形態】
図１を用いて、本発明の実施形態について説明する。本発明に係る赤外線センサ付天井照明器具は図外の天井面に水平に装着される器具本体３を備える。器具本体３を下側から覆い上端開口周縁が該器具本体３の外周部に着脱自在に当接する透光カバー１を備える。器具本体３の中央下方部に配置された点灯制御用の赤外線センサ４を備える。透光カバー１の下部中央に赤外線センサ４と近接し該赤外線センサ４の一部４０（赤外線受光体）をカバー下方に突出させるセンサ窓６を設ける。以上のような赤外線センサ付天井照明器具は一般的である。光源等の図示・説明は省略する。
透光カバー１における上端開口周縁部に上方に行くに従ってすぼまる形態の逆テーパー外周面２を形成する。器具本体３における外周部に逆テーパー外周面２と密着する逆テーパー内周面５を形成する。組立後の状態では逆テーパー外周面２・逆テーパー内周面５が密着し、そのようにして透光カバー１の位置決め、特にその水平方向に対する位置決めがなされる。その位置決めは的確であり、該赤外線センサ４の一部４０（赤外線受光体）はセンサ窓６中央に位置する。
【０００６】
【発明の効果】
本発明は透光カバーにおける上端開口周縁部に上方に行くに従ってすぼまる形態の逆テーパー外周面と、器具本体における前記逆テーパー外周面と密着する逆テーパー内周面とを利用して位置決め精度を高めたものである。これによれば、赤外線センサとセンサ窓との位置ずれを簡単に防止することができ、位置ずれによる指向性上制約ないしは商品価値低下の弊害を除くことができる。
【図面の簡単な説明】
【図１】本発明に係る赤外線センサ付天井照明器具を示す要部分解断面図である。
【符号の説明】
１：透光カバー、２：逆テーパー外周面、３：器具本体、４：赤外線センサ、
５：逆テーパー内周面、６：センサ窓[0001]
BACKGROUND OF THE INVENTION
The present invention includes an instrument body, a translucent cover that covers the instrument body from below, an infrared sensor for lighting control disposed on the instrument body, and the infrared sensor and the sensor window of the translucent cover are aligned. The present invention relates to a ceiling lighting fixture with an infrared sensor.
[0002]
[Prior art]
A known ceiling lighting fixture with an infrared sensor includes a fixture main body mounted on a ceiling surface. A light-transmitting cover is provided that covers the instrument body from below and has a peripheral edge of the upper end opening removably contacting the outer periphery of the instrument body. An infrared sensor for lighting control is provided in the lower central part of the instrument body. A sensor window is provided in the lower center of the translucent cover so as to be close to the infrared sensor and project a part of the infrared sensor below the cover.
[0003]
[Problems to be solved by the invention]
In the conventional ceiling lighting fixture with an infrared sensor, the positioning of the translucent cover with respect to the fixture body is not precise. For this reason, the correspondence relationship between the infrared sensor and the sensor window is poor, and it is unnaturally shifted, which may restrict the directivity of the infrared sensor or impair the commercial value.
The present invention proposes a structure for easily and accurately positioning an infrared sensor and a sensor window, and eliminates restrictions on directivity or adverse effects of a decrease in commercial value.
[0004]
[Means for Solving the Problems]
In the present invention, the reverse tapered outer peripheral surface is formed so as to narrow toward the upper end opening peripheral edge of the translucent cover. Moreover, the reverse taper inner peripheral surface closely_contact | adhered to the said reverse taper outer peripheral surface is formed in the outer peripheral part of an instrument main body.
The above-described reverse taper outer peripheral surface and reverse taper inner peripheral surface are brought into close contact with each other to accurately position the translucent cover or the sensor window.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIG. The ceiling lighting fixture with an infrared sensor according to the present invention includes a fixture body 3 that is horizontally mounted on a ceiling surface (not shown). A translucent cover 1 is provided that covers the instrument body 3 from below and has a peripheral edge of the upper end opening detachably contacting the outer periphery of the instrument body 3. An infrared sensor 4 for lighting control is provided at the center lower part of the instrument body 3. A sensor window 6 is provided in the lower center of the translucent cover 1 so as to be close to the infrared sensor 4 and project a part 40 (infrared light receiving body) of the infrared sensor 4 downward. The ceiling lighting fixture with an infrared sensor as described above is common. Illustration and description of the light source and the like are omitted.
A reverse tapered outer peripheral surface 2 is formed so as to be tapered toward the upper end opening peripheral edge of the translucent cover 1 as it goes upward. A reverse tapered inner peripheral surface 5 that is in close contact with the reverse tapered outer peripheral surface 2 is formed on the outer peripheral portion of the instrument main body 3. In the assembled state, the reverse taper outer peripheral surface 2 and the reverse taper inner peripheral surface 5 are in close contact with each other, and thus the translucent cover 1 is positioned, particularly in the horizontal direction. The positioning is accurate, and a part 40 (infrared light receiving body) of the infrared sensor 4 is located at the center of the sensor window 6.
[0006]
【The invention's effect】
The present invention uses a reverse tapered outer peripheral surface that is tapered toward the upper end opening peripheral edge of the translucent cover, and a reverse tapered inner peripheral surface that is in close contact with the reverse tapered outer peripheral surface of the instrument body. It is a thing that raised. According to this, it is possible to easily prevent the positional deviation between the infrared sensor and the sensor window, and it is possible to eliminate the restrictions on directivity due to the positional deviation or the adverse effect of the reduction in commercial value.
[Brief description of the drawings]
FIG. 1 is an exploded cross-sectional view showing a main part of a ceiling lighting fixture with an infrared sensor according to the present invention.
[Explanation of symbols]
1: translucent cover, 2: reverse tapered outer peripheral surface, 3: instrument body, 4: infrared sensor,
5: Reverse taper inner peripheral surface, 6: Sensor window

Claims

An instrument main body mounted on the ceiling surface is provided, and the instrument main body is covered from the lower side, and an upper end opening peripheral edge is detachably contacted with the outer peripheral part of the instrument main body, and is disposed at a lower central portion of the instrument main body. In the ceiling lighting fixture with an infrared sensor provided with an infrared sensor for lighting control, provided with a sensor window in the lower center of the translucent cover in proximity to the infrared sensor and projecting a part of the infrared sensor downward in the cover,
A reverse-tapered outer peripheral surface that forms a taper as it goes upward is formed at the peripheral edge of the upper end opening of the translucent cover, and a reverse-tapered inner peripheral surface that is in close contact with the reverse-tapered outer peripheral surface is formed at the outer peripheral portion of the instrument body. The ceiling illuminator with an infrared sensor is characterized in that the translucent cover is positioned by bringing the reverse tapered outer peripheral surface of the translucent cover into close contact with the reverse tapered inner peripheral surface of the instrument body .