【０００１】
【発明の属する技術分野】
本発明は振動を発生する点灯装置の騒音上昇を抑制した放電灯器具の放熱板構造に関する。
【０００２】
【従来の技術】
従来の技術では、振動を発生する点灯装置の温度低減に板厚の薄い波形形状の放熱板を点灯装置と器具本体の間に設け、点灯装置のネジによる締め込み固定により、点灯装置と器具本体を密着接触と同様の状態とし、温度上昇の低減を図っていたが、剛性が弱く輸送等での大きな変形による透き間や、端部の点灯装置、器具本体に接触していない部分より生じる振動による騒音面で問題があつた。
【０００３】
【発明が解決しようとする課題】
従来技術では、振動を発生する点灯装置の温度上昇の低減に前述の波形形状の放熱板を使用していたが、振動の大きな点灯装置への使用時に騒音の上昇傾向が生じた。
本発明によれば、剛性を有した板状の放熱板に押出しを設けた構造と端部を点灯装置または器具本体に接触する構造とすることにより、輸送衝撃等による容易な変形や、変形による透き間状の未接触部を防ぎ、点灯装置の振動による騒音の上昇抑制が可能となり、押出し高さ寸法分の空気対流層が確保され、放熱による温度上昇の低減が可能となる。
【０００４】
【課題を解決するための手段】
上記目的を達成するために、剛性を有した板材に押出し加工を設ける。また、端部および周囲には、点灯装置または器具本体に接触させる為に押出し加工は設けずに板状形状とした放熱板とする。これにより、点灯装置と器具本体間に前記放熱板を設けネジによる締め付け固定した際に、点灯装置または器具本体のどちらにも接しない未接触部をなくし、騒音上昇を抑制する。
【０００５】
【発明の実施の形態】
本発明の実施形態を図１〜２を用いて説明する。図１は本発明放熱板の姿図を示しており、本発明放熱板１０・器具本体２０・点灯装置３０・取付ネジ４０・取付ナット４Ｌ・反射板５０から構成される。放熱板１０は剛性を持たせた板材に端部１２および周囲部１３を除いた位置に押出しを設け、空気対流層１４を作ることにより放熱を図る。
図２は本発明放熱板取付時断面図を示しており、放熱板１０は点灯装置３０・器具本体２０の間に挿入し取付ネジ４０・取付ナット４１にて締め付け固定した際に、端部１２および周囲部１３が点灯装置３０に接触し、未接触状態を防ぐため、点灯装置３０より発生する振動による騒音上昇を抑制し、温度上昇を低減することが可能となる。
【０００６】
【発明の効果】
本発明によれば、振動を発生する点灯装置の騒音上昇を抑制した温度上昇を低減する放熱構造が可能となる。
【図面の簡単な説明】
【図１】本発明放熱構造の要部分解斜視図である。
【図２】その放熱板取付時の断面図である。
【図３】従来放熱構造の要部分解斜視図である。
【図４】その放熱板取付時の断面図である。
【符号の説明】
１０：放熱板、１１：押出し部、１２：端部、１３：周囲部、１４：空気対流層、２０：器具本体、３０：点灯装置、３１：点灯装置ゴム座、４０：取付ネジ、４１：取付ナット、５０：反射板、６０：従来放熱板、６Ｌ：端部末接触部、６２：変形による未接触部[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a heat radiating plate structure of a discharge lamp appliance that suppresses an increase in noise of a lighting device that generates vibration.
[0002]
[Prior art]
In the prior art, a thin heat-radiating plate having a thin plate shape is provided between the lighting device and the fixture body to reduce the temperature of the lighting device that generates vibration, and the lighting device and the fixture body are tightened and fixed by screws of the lighting device. Was in the same state as close contact to reduce the temperature rise.However, the rigidity was weak and the gap caused by large deformation in transportation etc., and the vibration generated from the lighting device at the end and the part not in contact with the appliance body There was a problem with noise.
[0003]
[Problems to be solved by the invention]
In the related art, the above-mentioned wave-shaped heat sink is used to reduce the temperature rise of the lighting device that generates vibration. However, the noise tends to increase when the lighting device is used for a lighting device with large vibration.
According to the present invention, by adopting a structure in which extrusion is provided on a rigid plate-shaped heat sink and a structure in which an end portion comes into contact with a lighting device or an appliance body, easy deformation due to a transportation impact or the like, A transparent non-contact portion is prevented, noise rise due to vibration of the lighting device can be suppressed, an air convection layer corresponding to the extrusion height dimension can be secured, and a temperature rise due to heat radiation can be reduced.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, an extruding process is provided on a rigid plate material. In addition, the end portion and the periphery are formed into a plate-shaped heat radiating plate without being extruded to make contact with the lighting device or the appliance body. Thus, when the heat radiating plate is provided between the lighting device and the fixture main body and fastened and fixed by screws, a non-contact portion that does not come into contact with either the lighting device or the fixture main body is eliminated, and noise rise is suppressed.
[0005]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a view of a heat sink of the present invention, which is composed of a heat sink 10, a tool body 20, a lighting device 30, a mounting screw 40, a mounting nut 4L, and a reflecting plate 50 of the present invention. The heat radiating plate 10 is provided with an extruded portion except for the end portion 12 and the peripheral portion 13 on a plate material having rigidity, and heat is radiated by forming an air convection layer 14.
FIG. 2 is a cross-sectional view of the heat sink of the present invention when the heat sink is attached. When the heat sink 10 is inserted between the lighting device 30 and the appliance body 20 and is fixed by tightening with the mounting screw 40 and the mounting nut 41, the end portion 12 is formed. In addition, in order to prevent the lighting device 30 from coming into contact with the surrounding unit 13 and to prevent the lighting device 30 from being in a non-contact state, it is possible to suppress an increase in noise due to vibration generated from the lighting device 30 and reduce an increase in temperature.
[0006]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the radiation structure which reduces the temperature rise which suppressed the noise rise of the lighting device which generate | occur | produces a vibration becomes possible.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a main part of a heat dissipation structure of the present invention.
FIG. 2 is a sectional view when the heat sink is attached.
FIG. 3 is an exploded perspective view of a main part of a conventional heat dissipation structure.
FIG. 4 is a sectional view when the heat sink is attached.
[Explanation of symbols]
10: Heat sink, 11: Extruded part, 12: End, 13: Peripheral part, 14: Air convection layer, 20: Instrument body, 30: Lighting device, 31: Lighting device rubber seat, 40: Mounting screw, 41: Mounting nut, 50: reflective plate, 60: conventional heat sink, 6L: end contact portion, 62: non-contact portion due to deformation
