JPH07147648A - Moisture eliminating device - Google Patents

Moisture eliminating device

Info

Publication number
JPH07147648A
JPH07147648A JP5316110A JP31611093A JPH07147648A JP H07147648 A JPH07147648 A JP H07147648A JP 5316110 A JP5316110 A JP 5316110A JP 31611093 A JP31611093 A JP 31611093A JP H07147648 A JPH07147648 A JP H07147648A
Authority
JP
Japan
Prior art keywords
water
housing
operating member
heat generating
seesaw lever
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.)
Pending
Application number
JP5316110A
Other languages
Japanese (ja)
Inventor
Akira Yamamoto
晃 山本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nikon Corp
Original Assignee
Nikon Corp
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 by Nikon Corp filed Critical Nikon Corp
Priority to JP5316110A priority Critical patent/JPH07147648A/en
Publication of JPH07147648A publication Critical patent/JPH07147648A/en
Pending legal-status Critical Current

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  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

PURPOSE:To provide a moisture eliminating device which can forcibly dry and eliminate completely the moisture generated at a unit part of an operating member due to the rain, etc., by placing a heating means at a position near a member that supports the operating member in order to evaporate the moisture. CONSTITUTION:A seesaw lever housing 10 is made of a metal like aluminum, etc., that has high heat conductivity. A power transistor 8 is attached to the housing 10 so that this housing can serve as a heat sink. In such a constitution, the housing 10 is always heated and kept dry by the heat of the transistor 8 as long as a lens is driven by the electric power. Thus it is possible to quickly eliminate the moisture generated in the housing 10 due to the rain, etc., without using any special parts, structure, etc.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、ケースと操作部材との
間から浸入する水分を除去する水分除去装置に関し、特
に、ビデオカメラ用ズームレンズ等のグリップに設けら
れたシーソーレバーの隙間から浸入する水分を除去する
のに適した水分除去装置に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water removing device for removing water that has entered between a case and an operating member, and in particular, it enters through a gap of a seesaw lever provided in a grip of a video camera zoom lens or the like. The present invention relates to a water removing device suitable for removing water that is removed.

【0002】[0002]

【従来の技術】図2は、従来の水分除去装置が組み込ま
れたビデオカメラ用ズームレンズの一例を示す断面図で
ある。ズームレンズ(1) には、グリップ(2) が取り付け
られており、操作がしやすいように、グリップ(2) の上
部にシーソーレバーユニット(3) が配置されている。ま
た、グリップ(2) は、フォーカス、ズーム等の光学系を
電動によって駆動する駆動装置(4) 及びその駆動装置
(4) を制御する駆動回路基板(5) を内蔵しているので、
グリップ(2) の上部から雨等の水が掛かった場合に、駆
動装置(4) 及び駆動回路(5) に直接、水が掛からないよ
うにシールされた構造となっている。
2. Description of the Related Art FIG. 2 is a sectional view showing an example of a zoom lens for a video camera in which a conventional water removing device is incorporated. A grip (2) is attached to the zoom lens (1), and a seesaw lever unit (3) is arranged above the grip (2) for easy operation. The grip (2) is a drive device (4) for electrically driving an optical system such as focus and zoom, and the drive device.
Since the drive circuit board (5) that controls (4) is built in,
The structure is such that the drive device (4) and the drive circuit (5) are directly sealed with water when rain or other water is splashed from the upper part of the grip (2).

【0003】しかし、シーソーレバーユニット(3) は、
外部から操作する必要があるので、その内部に水が浸入
する可能性がある。シーソーレバー操作部材(7) の内部
には、可変抵抗(6) が設けられ、シーソーレバー操作部
材(7) の移動量(回転角)を検出し、駆動回路基板(5)
を介して、駆動装置(4) を用いて速度制御される。な
お、(15)は、金属接点である。
However, the seesaw lever unit (3) is
Since it needs to be operated from the outside, water may get inside. A variable resistor (6) is provided inside the seesaw lever operating member (7) to detect the movement amount (rotation angle) of the seesaw lever operating member (7) and to drive the drive circuit board (5).
The speed is controlled by using the driving device (4) via the. In addition, (15) is a metal contact.

【0004】一般的に、フォーカス、ズーム等をサーボ
駆動させる場合には、レンズが大型となり、レンズ鏡筒
の操作回転トルクが1Kgcmを越え、駆動モータに100mA
程度の電流値が流れる可能性がある場合には、駆動回路
基板(5) には、パワートランジスタ(8) が必要であり、
そのパワートランジスタ(8) には、放熱のための放熱板
(9) が取り付けられている。
Generally, when the focus, zoom, etc. are servo-driven, the lens becomes large, the operating rotational torque of the lens barrel exceeds 1 Kgcm, and the drive motor is 100 mA.
When there is a possibility that a current value of a certain degree may flow, the drive circuit board (5) requires a power transistor (8),
The power transistor (8) has a heat sink for heat dissipation.
(9) is installed.

【0005】また、シーソーレバー操作部材(7) は、シ
ーソーレバーハウジング(10)により回転可能に保持さ
れ、そのハウジング(10)は、シーソーレバー操作部材
(7) の移動(回転)の逃げが必要なために、凹型の窪み
部(11)を有している。この窪み部(11)は、雨等の原因に
より上部から水が浸入した場合に、グリップ(2) 内部の
駆動装置(4) 及び駆動回路(5) に水が掛からないように
袋状の構造になっている。シーソーレバー操作部材(7)
は、グリップ(2) 上部に配置されているために、水が浸
入した場合に、窪み部(11)に水が溜まることがあるの
で、下部に水を逃がす水抜き管(12)がつなげられてい
る。なお、シーソーレバーユニット(3) の構造として
は、実公昭61-38162に示されている。
The seesaw lever operating member (7) is rotatably held by a seesaw lever housing (10), and the housing (10) is a seesaw lever operating member.
Since it is necessary to escape the movement (rotation) of (7), it has a concave recess (11). This recess (11) has a bag-like structure so that the drive unit (4) and drive circuit (5) inside the grip (2) will not be exposed to water if water enters from above due to rain or the like. It has become. Seesaw lever operating member (7)
Since it is located on the upper part of the grip (2), water may collect in the depression (11) when water enters, so a drain pipe (12) for letting water escape is connected to the lower part. ing. The structure of the seesaw lever unit (3) is shown in Japanese Utility Model Publication No. 61-38162.

【0006】[0006]

【発明が解決しようとする課題】しかし、前述した従来
の水分除去装置では、水抜き管(12)のみによって浸入し
た水分を除去していたので、ハウジング(10)に浸入した
大量の水分を除去することはできるが、毛細管現象によ
り浸入した小量の水を除去することはできなかった。
However, in the above-described conventional water removing device, the water that has entered the housing (10) is removed only by removing the water that has entered the housing (10). However, it was not possible to remove a small amount of water that had entered due to capillary action.

【0007】また、シーソーレバー操作部材(7) や可変
抵抗(6) の隅部に溜まった水分を完全に除去することが
不可能なために、金属部品が酸化したり、埃等のゴミが
溜まり、シーソーレバーの円滑な動きを妨げてしまう可
能性もある。
Further, since it is impossible to completely remove the water accumulated in the corners of the seesaw lever operating member (7) and the variable resistor (6), metal parts are oxidized and dust such as dust is generated. There is a possibility that the water will accumulate and hinder the smooth movement of the seesaw lever.

【0008】本発明は、このような従来の問題点に鑑み
てなされたものであり、雨等の原因により操作部材のユ
ニットに水が浸入した場合に、その水を強制的に乾燥さ
せて完全に水分を除去することができる信頼性の高い水
分除去装置を提供することを目的とする。
The present invention has been made in view of the above conventional problems, and when water enters the unit of the operating member due to rain or the like, the water is forcibly dried and completely cleaned. An object of the present invention is to provide a highly reliable water removing device capable of removing water.

【0009】[0009]

【課題を解決するための手段】前記課題を解決するため
に、本発明による水分除去装置の第1の解決手段は、ケ
ースの外表面から突出した操作部材を上面又は側面に有
する装置内に、前記ケースと前記操作部材との間から浸
入する水分を外部に排出する排出手段を有する水分除去
装置において、前記操作部材を支持する支持部材の近傍
に、浸入した水分を蒸発させる発熱手段を備えたことを
特徴とする。
In order to solve the above-mentioned problems, the first solution means of the water removing apparatus according to the present invention is to provide an operating member projecting from the outer surface of the case in an apparatus having an upper surface or a side surface, In a moisture removing device having a discharging means for discharging moisture entering between the case and the operating member to the outside, a heat generating means for evaporating the entering moisture is provided in the vicinity of a support member supporting the operating member. It is characterized by

【0010】第2の解決手段は、第1の解決手段の水分
除去装置において、前記装置は、移動光学系及びその移
動光学系を駆動する光学系駆動手段を内蔵したレンズ装
置であり、前記操作部材は、前記光学系駆動手段を可変
抵抗を用いて外部から操作するシーソーレバーであり、
前記発熱手段は、前記シーソーレバーの支持部材又は前
記可変抵抗の支持部材に取り付けられたことを特徴とす
る。
A second solving means is the water removing apparatus of the first solving means, wherein the apparatus is a lens device having a moving optical system and an optical system driving means for driving the moving optical system, The member is a seesaw lever for operating the optical system driving means from the outside using a variable resistance,
The heat generating means is attached to a supporting member of the seesaw lever or a supporting member of the variable resistor.

【0011】第3の解決手段は、第3の解決手段の水分
除去装置において、前記発熱手段は、前記光学系駆動手
段に使用される発熱部品であり、 前記各支持部材は、
前記発熱部品の放熱手段となることを特徴とする。
A third solving means is, in the water removing apparatus of the third solving means, the heat generating means is a heat generating component used for the optical system driving means, and each of the supporting members is
It is characterized in that it serves as a heat radiating means for the heat generating component.

【0012】[0012]

【作用】本発明によれば、ケースと操作部材の隙間から
浸入した水を、従来から採用されていた管などを用いた
排出手段によって逃がすだけではなく、操作部材の支持
部材に発熱体を取り付け、その支持部材自体を強制的に
乾燥させることにより水分を除去する構成としたので、
操作部材の支持部材が早く乾燥する。このため、金属部
品の防錆が可能であり、埃等のゴミを原因とする操作感
の悪化を防ぐことができる。
According to the present invention, the water that has entered the gap between the case and the operating member is not only released by the discharging means using a pipe or the like that has been conventionally adopted, but also the heating element is attached to the supporting member of the operating member. Since the support member itself is forcibly dried to remove water,
The supporting member of the operating member dries quickly. For this reason, it is possible to prevent corrosion of the metal parts, and it is possible to prevent the operational feeling from being deteriorated due to dust such as dust.

【0013】また、駆動回路に使用しているパワートラ
ンジスタ等の発熱部品を発熱体として使用することによ
り、発熱のための特別な部品を追加する必要が無く、さ
らに、操作部材の支持部材を放熱手段として使用するた
めに、従来の放熱板が不必要となる。
Further, by using a heat-generating component such as a power transistor used in the drive circuit as a heat-generating body, it is not necessary to add a special component for heat generation, and the supporting member of the operating member is radiated. No conventional heat sink is required for use as a means.

【0014】[0014]

【実施例】以下、図面などを参照しながら、実施例をあ
げて、さらに詳しく説明する。図1は、本発明による水
分除去装置の実施例を示す断面図である。なお、前述し
た従来例と同様な機能を果たす部分には、同一の符号を
付して、重複する説明を省略する。この実施例では、シ
ーソーレバーハウジング(10)は、アルミニウム等の熱伝
導性のよい金属により成形されており、シーソーレバー
ハウジング(10)にパワートランジスタ(8) を取り付け、
このハウジング(10)を放熱板と兼用することにした。ま
た、固定方法としては、シーソーレバーハウジング(10)
とパワートランジスタ(8) の間に絶縁シート(13)を挟ん
でビス(14)により固定する方法がとられている。
Embodiments will be described in more detail below with reference to the drawings and the like. FIG. 1 is a cross-sectional view showing an embodiment of a water removing device according to the present invention. In addition, the same reference numerals are given to the portions having the same functions as those of the above-described conventional example, and the duplicate description will be omitted. In this embodiment, the seesaw lever housing (10) is formed of a metal having good thermal conductivity such as aluminum, and the power transistor (8) is attached to the seesaw lever housing (10).
We decided to use this housing (10) also as a heat sink. As a fixing method, seesaw lever housing (10)
The insulation sheet (13) is sandwiched between the power transistor (8) and the power transistor (8) and fixed with screws (14).

【0015】この実施例は、パワートランジスタ(8) を
ハウジング(10)に取り付けているので、電動によるレン
ズ駆動を行っている間は、パワートランジスタ(8) の発
熱により、ハウジング(10)を常に加熱して乾燥している
ことになり、雨等の原因でシーソーレバーハウジング(1
0)内に水が浸入した場合に、なんら特別な部品、構造等
を必要とせずに、早く水分を除去することができる。ま
た、ハウジング(10)をパワートランジスタ(8) の放熱板
の代わりにしたので、放熱板を必要としなくなった。
In this embodiment, since the power transistor (8) is attached to the housing (10), the heat generated by the power transistor (8) always keeps the housing (10) kept open while the lens is driven electrically. It has been heated and dried, and the seesaw lever housing (1
When water enters inside 0), it is possible to quickly remove the water without requiring any special part, structure or the like. Also, since the housing (10) is used in place of the heat sink of the power transistor (8), the heat sink is no longer required.

【0016】以上説明した実施例に限定されず、種々の
変形や変更が可能であって、それらも本発明に含まれ
る。例えば、この実施例では、パワートランジスタ(8)
をハウジング(10)の下部に取り付けてあるが、放熱効果
があり、パワートランジスタ(8) に直接水がかからない
所であれば、他の場所に取り付けてもよい。また、可変
抵抗(6) のハウジングに、パワートランジスタ(8) を直
接固定すれば、更に有効に乾燥させることができる。さ
らに、発熱源をパワートランジスタとしたが、別に、例
えば、発熱シート等にしてもよい。
The present invention is not limited to the embodiments described above, and various modifications and changes are possible, and these are also included in the present invention. For example, in this embodiment, the power transistor (8)
Is attached to the lower part of the housing (10), but it may be attached to another place as long as it has a heat dissipation effect and the power transistor (8) is not directly exposed to water. Further, if the power transistor (8) is directly fixed to the housing of the variable resistor (6), it can be dried more effectively. Furthermore, although the heat source is a power transistor, a heat generating sheet or the like may be used instead.

【0017】[0017]

【発明の効果】以上詳しく説明したように、請求項1に
よれば、操作部材の支持部材の近傍に浸入した水を乾燥
させる発熱手段を設けたので、早く水分を除去すること
ができる。請求項2によれば、光学系駆動手段を有する
レンズ装置などにそのまま適用できる。請求項3によれ
ば、発熱手段として、光学系駆動手段に使用される発熱
部品を用いているので、特別な部品の追加なしに、操作
部材の支持部材を乾燥させることができ、逆に、その支
持部材を発熱部品の放熱手段としても使用できる。
As described above in detail, according to the first aspect, since the heat generating means for drying the infiltrated water is provided in the vicinity of the supporting member of the operating member, the water can be quickly removed. According to the second aspect, it can be applied as it is to a lens device having an optical system driving means. According to the third aspect, since the heat generating component used in the optical system driving mechanism is used as the heat generating mechanism, the supporting member of the operating member can be dried without adding a special component, and conversely, The support member can also be used as a heat radiating means for the heat generating component.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明による水分除去装置の実施例を示す断面
図である。
FIG. 1 is a cross-sectional view showing an embodiment of a water removing device according to the present invention.

【図2】従来の水分除去装置が組み込まれたビデオカメ
ラ用ズームレンズの一例を示す断面図である。
FIG. 2 is a cross-sectional view showing an example of a zoom lens for a video camera in which a conventional water removing device is incorporated.

【符号の説明】[Explanation of symbols]

1 ズームレンズ 2 グリップ 3 シーソーレバーユニット 4 駆動装置 5 駆動回路基板 6 可変抵抗 7 シーソーレバー操作部材 8 パワートランジスタ 9 放熱板 10 シーソーレバーハウジング 11 窪み部 12 水抜き管 13 絶縁シート 14 ビス 15 金属接点 1 zoom lens 2 grip 3 seesaw lever unit 4 driving device 5 driving circuit board 6 variable resistance 7 seesaw lever operating member 8 power transistor 9 heat sink 10 seesaw lever housing 11 recess 12 drainage pipe 13 insulating sheet 14 screw 15 metal contact

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 ケースの外表面から突出した操作部材を
上面又は側面に有する装置内に、前記ケースと前記操作
部材との間から浸入する水分を外部に排出する排出手段
を有する水分除去装置において、 前記操作部材を支持する支持部材の近傍に、浸入した水
分を蒸発させる発熱手段を備えたことを特徴とする水分
除去装置。
1. A water removing device having a discharging means for discharging to the outside the water that has entered between the case and the operating member, in a device having an operating member protruding from the outer surface of the case on the upper surface or the side surface. A water removing device, characterized in that a heat generating means for evaporating invaded water is provided in the vicinity of a supporting member for supporting the operation member.
【請求項2】 請求項1に記載の水分除去装置におい
て、 前記装置は、移動光学系及びその移動光学系を駆動する
光学系駆動手段を内蔵したレンズ装置であり、 前記操作部材は、前記光学系駆動手段を可変抵抗を用い
て外部から操作するシーソーレバーであり、 前記発熱手段は、前記シーソーレバーの支持部材又は前
記可変抵抗の支持部材に取り付けられたことを特徴とす
る水分除去装置。
2. The water removing apparatus according to claim 1, wherein the apparatus is a lens apparatus including a moving optical system and an optical system driving unit that drives the moving optical system, and the operating member is the optical unit. A water removing device, wherein the system driving means is a seesaw lever for operating from the outside using a variable resistance, and the heat generating means is attached to a supporting member of the seesaw lever or a supporting member of the variable resistance.
【請求項3】 請求項2に記載の水分除去装置におい
て、 前記発熱手段は、前記光学系駆動手段に使用される発熱
部品であり、 前記各支持部材は、前記発熱部品の放熱手段となること
を特徴とする水分除去装置。
3. The water removing apparatus according to claim 2, wherein the heat generating means is a heat generating component used in the optical system driving means, and each of the supporting members serves as a heat radiating means of the heat generating component. A water removal device.
JP5316110A 1993-11-22 1993-11-22 Moisture eliminating device Pending JPH07147648A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5316110A JPH07147648A (en) 1993-11-22 1993-11-22 Moisture eliminating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5316110A JPH07147648A (en) 1993-11-22 1993-11-22 Moisture eliminating device

Publications (1)

Publication Number Publication Date
JPH07147648A true JPH07147648A (en) 1995-06-06

Family

ID=18073364

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5316110A Pending JPH07147648A (en) 1993-11-22 1993-11-22 Moisture eliminating device

Country Status (1)

Country Link
JP (1) JPH07147648A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3236574A1 (en) * 2016-04-21 2017-10-25 Regal Beloit America, Inc. Electric motor controller for high-moisture applications and method of manufacture

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3236574A1 (en) * 2016-04-21 2017-10-25 Regal Beloit America, Inc. Electric motor controller for high-moisture applications and method of manufacture
CN107306105A (en) * 2016-04-21 2017-10-31 雷勃美国公司 The motor controller and manufacture method applied for high moisture
US10536047B2 (en) 2016-04-21 2020-01-14 Regal Beloit America, Inc. Electric motor controller for high-moisture applications and method of manufacture
CN107306105B (en) * 2016-04-21 2020-09-04 雷勃美国公司 Motor controller for high moisture applications and method of manufacture

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