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    • 15. 发明申请
    • Constant temperature type crystal oscillator for high stability
    • 恒温型晶体振荡器,稳定性高
    • US20070057742A1
    • 2007-03-15
    • US11518768
    • 2006-09-11
    • Hiroyuki MitomeManabu ItoTakeshi Uchida
    • Hiroyuki MitomeManabu ItoTakeshi Uchida
    • H03B5/32
    • H03B5/04H05K1/0201H05K1/0212H05K2201/10022H05K2201/10075H05K2201/10166H05K2203/165
    • A constant temperature oscillator which comprises: a crystal oscillator that is provided upright on a circuit board, and which comprises a plurality of lead wires extending out from a bottom face of an oscillator container in which a crystal piece is hermetically sealed; an oscillation element arranged on the circuit board and configuring an oscillation circuit in conjunction with the crystal oscillator; and a temperature control element including at least a heating chip resistance and a thermistor, arranged on the circuit board, and configuring a temperature control circuit that keeps an operating temperature of the crystal oscillator constant; and which is provided with a heat transfer plate between the heating chip resistance and the bottom face of the oscillator container, wherein, the heat transfer plate has a notch into which the heating chip resistance is fitted, and, a heat sink lies between the heat transfer plate and the heating chip resistance and closely contacts with them. In the constant temperature oscillator of the present invention, instead of a constant temperature oven having a large heat capacity which is conventionally used to keep constant temperature, the heat transfer plate made from a metal plate of a high heat transfer coefficient is adopted as a heat transfer structure. Thus, an object of the invention is to provide a constant temperature oscillator in which the heat efficiency is improved and that deals with thinning.
    • 一种恒温振荡器,包括:竖直设置在电路板上的晶体振荡器,其包括从振荡器容器的底面延伸出的多根引线,其中晶体片被气密地密封; 布置在电路板上并与晶体振荡器配合的振荡电路的振荡元件; 以及设置在所述电路基板上的至少具有加热芯片电阻和热敏电阻的温度控制元件,以及构成使所述晶体振荡器的工作温度保持恒定的温度控制电路; 并且在加热芯片电阻和振荡器容器的底面之间设置有传热板,其中,传热板具有加热芯片电阻被安装到其中的凹口,并且散热器位于热量 转印板和加热芯片的电阻并与其紧密接触。 在本发明的恒温振荡器中,代替常规用于保持恒温的具有大的热容的恒温烘箱,采用由传热系数高的金属板制成的传热板作为热 转移结构。 因此,本发明的目的是提供一种恒温振荡器,其中热效率提高并且处理变薄。
    • 17. 发明申请
    • Constant temperature type crystal oscillator
    • US20050258913A1
    • 2005-11-24
    • US11129959
    • 2005-05-16
    • Manabu ItoMinoru FukudaTetuo KudoTakeshi Uchida
    • Manabu ItoMinoru FukudaTetuo KudoTakeshi Uchida
    • H03B5/04H03B5/36H03L1/04H05K1/02H05K3/30H03B1/00
    • H03B5/36H03B5/04H03L1/04H05K1/0212H05K1/0243H05K3/306H05K2201/062H05K2201/09063H05K2201/10022H05K2201/10068H05K2201/10151H05K2201/10522H05K2201/2036
    • The present invention is one where, in a lead wire led-out type crystal oscillator of constant temperature type for high stability, comprising: a heat supply body that supplies heat to a crystal resonator from which a plurality of lead wires are led out, to maintain the temperature constant; an oscillating element that constitutes an oscillating circuit together with the crystal resonator; a temperature control element that constitutes a temperature control circuit for controlling the temperature of the crystal resonator; and a circuit board for mounting the heat supply body, the oscillating element, and the temperature control element, and through which lead wires of the crystal resonator are passed through for mounting, the heat supply body comprises: a heat conducting plate which has through-holes for the lead wires and is mounted on the circuit board, and which faces, and is directly thermally joined to, the crystal resonator; and a chip resistor for heating which is mounted on the circuit board adjacent to the heat conducting plate, and is thermally joined to the heat conducting plate. As a result, a lead wire led-out type crystal oscillator of constant temperature type for high stability wherein the structure is simplified, and in particular the height dimension is reduced can be provided. Moreover, the present invention is a constant temperature type surface mounting type crystal oscillator which uses a crystal resonator for surface mounting which is mounted on the circuit board together with the oscillating elements and temperature control elements, and is constructed such that the crystal resonator is arranged on a ceramic substrate, and at least a chip resistor for heat generation and a highly temperature-dependent highly heat sensitive element are arranged on the ceramic substrate. The structure is such that the crystal resonator is arranged on one principal plane of the ceramic substrate, and the chip resistor and the temperature sensitive element are arranged on the other principal plane of the ceramic substrate, and the other principal plane of the ceramic substrate is positioned facing one principal plane of the circuit board, and heat conductive resin is interposed between the chip resistor and the circuit board. A surface mounted crystal oscillator of constant temperature type in which miniaturization is advanced, and the structure is simplified, is provided.