JP4987454B2 - Snowfall prevention device for large buildings - Google Patents
Snowfall prevention device for large buildings Download PDFInfo
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- JP4987454B2 JP4987454B2 JP2006345144A JP2006345144A JP4987454B2 JP 4987454 B2 JP4987454 B2 JP 4987454B2 JP 2006345144 A JP2006345144 A JP 2006345144A JP 2006345144 A JP2006345144 A JP 2006345144A JP 4987454 B2 JP4987454 B2 JP 4987454B2
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- 230000002265 prevention Effects 0.000 title claims description 29
- 238000002844 melting Methods 0.000 claims description 67
- 230000008018 melting Effects 0.000 claims description 50
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 16
- 229910052782 aluminium Inorganic materials 0.000 claims description 16
- 239000000919 ceramic Substances 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 description 8
- 240000000233 Melia azedarach Species 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000005413 snowmelt Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Description
本発明は、大規模建物の落雪防止装置に係り、特に、多雪地帯の大規模建物の屋根上への大量の積雪による落雪を防止する装置に関するものである。 The present invention relates to a snowfall prevention apparatus for large-scale buildings, and more particularly to an apparatus for preventing snowfall due to a large amount of snow on the roof of a large-scale building in a snowy area.
従来、屋根の雪止め構造としては、下記の特許文献１〜３に開示されるようなものがあり、また、屋根に積もった雪の凍結防止又は融雪装置としては、下記の特許文献４〜６に開示されるようなものがあった。
しかしながら、これらの先行技術は、一軒の住宅を前提に個別の雪止めや雪の凍結防止又は融雪装置に特化したものであり、今後建設される多雪地域の全覆新幹線駅における雪害対策として工夫されたものは見受けられない。
Conventionally, as a snow stop structure of a roof, there are those as disclosed in the following Patent Documents 1 to 3, and as a freeze prevention or snow melting device for snow accumulated on the roof, the following Patent Documents 4 to 6 are disclosed. There was something as disclosed in
However, these prior arts specialize in individual snow stops, snow freeze prevention or snow melting equipment on the premise of a single house, and measures against snow damage at fully-covered Shinkansen stations in heavy snow areas to be constructed in the future. I can't find anything devised as.
かかる今後建設される多雪地域の全覆新幹線駅のような大規模建築物の屋根からの落雪を如何にして防止するかは重要な課題である。雪害の一つに雪庇の落下がある。上家を完全消雪型にすれば雪庇の問題は生じないが、消雪装置のランニングコスト及び省エネルギーの観点から最適な解決法とは言えない。そこで、基本的には載雪型としつつ、上家端部のみに消雪装置を設けることにより雪庇の発生を防止する部分消雪型について検討を進めることとした。
上記したように、基本的には載雪型としつつ、部分消雪型により、上家端部のみに消雪装置を設けることにより雪庇を防止することは、工夫を要するものであった。
本発明は、基本的には載雪型であるが、落雪の危険のある屋根端部の雪を消雪装置で融雪することにより、落雪の防止を図ることができる大規模建物の落雪防止装置を提供することを目的とする。
As described above, it has been necessary to devise to prevent the snowfall by providing the snow removing device only at the edge of the upper house by the partial snow removing type while basically using the snow loading type.
The present invention is basically a snow-loading type, but a snowfall prevention device for a large-scale building that can prevent snowfall by melting snow at the edge of the roof at risk of snowfall with a snow removal device. The purpose is to provide.
本発明は、上記目的を達成するために、
〔１〕屋根の先端部に配置され、屋根中央部から大量の雪が移動することを防止する雪止柵と、この雪止柵の軒先側に配置され、降雪時に稼動することにより、積雪を溶かす消雪装置と、この消雪装置の軒先側に突設される傘木とを具備する大規模建物の落雪防止装置であって、前記消雪装置は前記雪止柵に隣接して略屋根の高さに配置される第１の消雪装置とこの第１の消雪装置の一段下部に配置される第２の消雪装置とを具備することを特徴とする。
In order to achieve the above object, the present invention provides
[1] shop is located at the tip of the roots, and Yukitome fence to prevent the moving mass of snow from the roof center portion, is disposed on the eaves side of the Yukitome fence, by operating during snowfall, the snow A snowfall prevention device for a large-scale building comprising a snowmelting device for melting and an umbrella tree protruding from the eaves side of the snowing device, wherein the snow removing device is substantially adjacent to the snow fence. And a second snow removing device arranged at a lower part of the first snow removing device .
〔２〕上記〔１〕記載の大規模建物の落雪防止装置において、前記第１および第２の消雪装置は、セラミックをテープ状に配置したヒーターを有する融雪パネルからなることを特徴とする。
〔３〕上記〔２〕記載の大規模建物の落雪防止装置において、前記第１の融雪パネルは、底部には断熱底板と、前記融雪パネルの上部には補強用リブで支持されるアルミニウムカバーとを具備することを特徴とする。
[ 2 ] The snowfall prevention device for a large-scale building according to the above [ 1 ], wherein the first and second snow removal devices comprise a snow melting panel having a heater in which ceramic is arranged in a tape shape.
[ 3 ] In the snowfall prevention device for a large-scale building according to [ 2 ], the first snow melting panel includes a heat insulating bottom plate at a bottom portion and an aluminum cover supported by a reinforcing rib at an upper portion of the snow melting panel. It is characterized by comprising.
本発明によれば、次のような効果を奏することができる。
（１）多雪地域の全覆駅舎における軒先から雪庇が落下することを有効に防止することができる。
（２）積雪を溶かす消雪装置を、コンパクトであり、しかも堅牢に多雪地域の全覆駅舎の軒先に構築することができる。
According to the present invention, the following effects can be achieved.
(1) It is possible to effectively prevent a snowfall from falling from the eaves of a totally covered station building in a heavy snow region.
(2) A snow extinguishing device that melts snow is compact and can be constructed firmly at the eaves of all-covered station buildings in heavy snow areas.
本発明の大規模建物の落雪防止装置は、屋根の先端部に配置され、屋根中央部から大量の雪が移動することを防止する雪止柵と、この雪止柵の軒先側に配置され、降雪時に稼動することにより、積雪を溶かす消雪装置と、この消雪装置の軒先側に突設される傘木とを具備する大規模建物の落雪防止装置であって、前記消雪装置は前記雪止柵に隣接して略屋根の高さに配置される第１の消雪装置とこの第１の消雪装置の一段下部に配置される第２の消雪装置とを具備する。 The snowfall prevention device for a large-scale building according to the present invention is disposed at the tip of the roof, prevents snow from moving a large amount of snow from the center of the roof, and is disposed on the eaves side of the snowfall fence. A snowfall prevention device for a large-scale building comprising a snow removal device that melts snow by operating at times, and an umbrella tree protruding from the eaves side of the snow removal device, wherein the snow removal device is the snow removal device. A first snow removing device disposed substantially at the height of the roof adjacent to the fence, and a second snow removing device disposed at a lower stage of the first snow removing device .
以下、本発明の実施の形態について詳細に説明する。
図１は本発明の大規模建物の落雪防止装置の動作の様子を示す図である。
図１（ａ）では、本発明の大規模建物の落雪防止装置の屋根１上に雪Ｓが積雪した状態を示しており、まさに軒先から雪庇が落下しようとしている。
図１（ｂ）では、軒先に配置される第１の消雪装置３、第２の消雪装置４の稼働により、雪庇は溶かされて雪庇の落下を防ぐことができる。なお、２は雪止柵（フェンス）、５は降雪による雪庇の落下をとめるアルミプレートからなる傘木である。
Hereinafter, embodiments of the present invention will be described in detail.
FIG. 1 is a diagram showing the operation of the snowfall prevention device for a large-scale building according to the present invention.
FIG. 1A shows a state in which the snow S has accumulated on the roof 1 of the snowfall prevention device for a large-scale building according to the present invention, and a snow sledge is about to fall from the eaves.
In FIG. 1 (b), the snow canopy is melted by the operation of the first snow extinguishing device 3 and the second snow extinguishing device 4 arranged at the eaves, and the falling of the snow canopy can be prevented. In addition, 2 is a snow fence (fence), 5 is an umbrella tree which consists of an aluminum plate which stops the fall of the snowfall by snowfall.
図１（ｃ）では、消雪装置３，４の作用により、軒先の積雪が溶かされて降雪は雪止柵２まで後退して保持される。
図２は本発明の大規模建物の全景を示す図面代用写真、図３はその大規模建物の屋根上を示す図面代用写真、図４はその大規模建物の屋根の軒先の実験状況を示す図面代用写真、図５はその大規模建物の屋根の軒先構成と融雪パネルを示す図面代用写真、図６はその融雪パネルを示す図面代用写真、図７はその雪止めフェンスを示す図面代用写真である。
In FIG. 1 (c), the snow at the eaves is melted by the action of the snow extinguishing devices 3 and 4, and the snowfall is retracted and held up to the snow fence 2.
FIG. 2 is a drawing-substituting photograph showing a full view of the large-scale building of the present invention, FIG. 3 is a drawing-substituting photograph showing the roof of the large-scale building, and FIG. 4 is a drawing showing an experimental situation of the eaves of the roof of the large-scale building. FIG. 5 is a drawing substitute photograph showing the eaves configuration and snow melting panel of the roof of the large building, FIG. 6 is a drawing substitute photograph showing the snow melting panel, and FIG. 7 is a drawing substitute photograph showing the snow fence. .
以下、各部の詳細について説明する。
図８は本発明の大規模建物の落雪防止装置の全体平面図、図９はその落雪防止装置の要部断面図、図１０はその落雪防止装置の第１の融雪パネルの構成図、図１１はその落雪防止装置の第２の融雪パネルの構成図である。
図８において、屋根１の軒先には雪止柵２が配置され、その先に第１の消雪装置（第１の融雪パネル）３が配置され、その第１の消雪装置（第１の融雪パネル）３の先の一段下には第２の消雪装置（第２の融雪パネル）４が配置される。その第２の消雪装置（第２の融雪パネル）４の先にはアルミニウムからなる傘木（第２のフェンス）５が設けられる。つまり、雪止柵２とアルミニウムからなる傘木（第２のフェンス）５との間の積雪が、第１の消雪装置（第１の融雪パネル）３と第２の消雪装置（第２の融雪パネル）４の稼働により、溶かされて、排水管から排出される。６は第１の融雪パネル３と第２の融雪パネル４とに電力を供給するための電源、７は降雪センサー、８は電源６から供給される電力をオン・オフ制御し、融雪パネル３，４の稼働のオン・オフ制御を行う制御器である。
Details of each part will be described below.
FIG. 8 is an overall plan view of a snowfall prevention device for a large-scale building according to the present invention, FIG. 9 is a cross-sectional view of an essential part of the snowfall prevention device, FIG. 10 is a configuration diagram of a first snow melting panel of the snowfall prevention device, and FIG. FIG. 3 is a configuration diagram of a second snow melting panel of the snow fall prevention device.
In FIG. 8, the snow fence 2 is arrange | positioned at the eaves edge of the roof 1, the 1st snow-melting apparatus (1st snow melting panel) 3 is arrange | positioned ahead, and the 1st snow-melting apparatus (1st A second snow-melting device (second snow-melting panel) 4 is disposed one step below the snow-melting panel 3. An umbrella tree (second fence) 5 made of aluminum is provided at the tip of the second snow extinguishing device (second snow melting panel) 4. That is, the snow accumulation between the snow fence 2 and the umbrella tree (second fence) 5 made of aluminum causes the first snow-melting device (first snow melting panel) 3 and the second snow-melting device (second The snow melting panel) 4 is melted and discharged from the drain pipe. 6 is a power source for supplying power to the first snow melting panel 3 and the second snow melting panel 4, 7 is a snowfall sensor, 8 is an on / off control of power supplied from the power source 6, 4 is a controller that performs on / off control of the operation of No. 4.
図９において、屋根１の先端には雪止柵２が配置される。この雪止柵２は斜材２Ａによって支持されている。したがって、重量のある降雪の荷重にも十分に耐えることができる。
屋根１の先端から突出するように第１の消雪装置（第１の融雪パネル）３が配置される。また、この第１の消雪装置（第１の融雪パネル）３と一段下部に第２の消雪装置（第２の融雪パネル）４が配置される。この第２の消雪装置（第２の融雪パネル）４の外側にはアルミニウムからなる傘木（第２のフェンス）５が設けられている。第２の消雪装置（第２の融雪パネル）４によって溶かされた流水は排水管９又はオバーフロー管１０から排出される。
In FIG. 9, a snow fence 2 is disposed at the tip of the roof 1. This snow fence 2 is supported by diagonal material 2A. Therefore, it can sufficiently withstand heavy snowfall loads.
A first snow removal device (first snow melting panel) 3 is arranged so as to protrude from the tip of the roof 1. In addition, a first snow-melting device (first snow melting panel) 3 and a second snow-melting device (second snow-melting panel) 4 are arranged one step below. An umbrella tree (second fence) 5 made of aluminum is provided outside the second snow extinguishing device (second snow melting panel) 4. The running water melted by the second snow removal device (second snow melting panel) 4 is discharged from the drain pipe 9 or the overflow pipe 10.
このように、第１の消雪装置（第１の融雪パネル）３で溶かされたシャーベッド状の水は、下段の第２の消雪装置（第２の融雪パネル）４で完全に溶かされて流水となり排水管９又はオバーフロー管１０から排出される。
本発明の大規模建物の落雪防止装置の第１の消雪装置（第１の融雪パネル）を示す図１０において、図１０（ａ）はその平面図、図１０（ｂ）は図１０（ａ）のＡ−Ａ線断面図、図１０（ｃ）は図１０（ｂ）のａ部拡大図、図１０（ｄ）はアルミカバー部の断面図、図１０（ｅ）は図１０（ａ）の側面図である。
Thus, the sherbet-shaped water melted by the first snow-melting device (first snow melting panel) 3 is completely melted by the lower second snow-melting device (second snow melting panel) 4. And is discharged from the drain pipe 9 or the overflow pipe 10.
In FIG. 10 showing the first snow removal device (first snow melting panel) of the snowfall prevention device for a large-scale building of the present invention, FIG. 10 (a) is a plan view, and FIG. 10 (b) is FIG. 10 (a). 10A is an enlarged view of a portion of FIG. 10B, FIG. 10D is a sectional view of the aluminum cover portion, and FIG. 10E is FIG. 10A. FIG.
これらの図において、３Ａはテープヒーター、３Ｂはアルミカバー、３Ｃはアルミケース、３Ｄはアングル材Ａ、３Ｅはアングル材Ｂ、３Ｆはクッション材、３Ｇはボルト、３Ｈは断熱底板、３Ｉは補強用リブである。
このように構成されるので、融雪パネルの底部には断熱底板３Ｈが、融雪パネルの上部には補強用リブ３Ｉで支持されたアルミニウムカバー３Ｂがそれぞれ配置されるので、テープヒーター３Ａからの熱は断熱底板３Ｈで反射されて上方に熱が向けられる。また、補強用リブ３Ｉで支持されたアルミカバー３Ｂが配置されているので、点検時などにはこの融雪パネル上を点検者は歩行することもできる。
In these drawings, 3A is a tape heater, 3B is an aluminum cover, 3C is an aluminum case, 3D is an angle material A, 3E is an angle material B, 3F is a cushion material, 3G is a bolt, 3H is a heat insulating bottom plate, and 3I is for reinforcement. It is a rib.
With this configuration, the heat insulating bottom plate 3H is disposed at the bottom of the snow melting panel, and the aluminum cover 3B supported by the reinforcing rib 3I is disposed at the top of the snow melting panel. Reflected by the heat insulating bottom plate 3H, heat is directed upward. Further, since the aluminum cover 3B supported by the reinforcing rib 3I is arranged, the inspector can also walk on the snow melting panel at the time of inspection.
本発明の大規模建物の落雪防止装置の第２の消雪装置（第２の融雪パネル）を示す図１１において、図１１（ａ）はその平面図、図１１（ｂ）は図１１（ａ）の側面図、図１１（ｃ）は図１１（ｂ）のａ部拡大図である。
これらの図において、４Ａはアルミニウムケースセット、４Ｂはテープヒーター、４Ｃはステー、４Ｄは取付ネジ、４Ｅはゴム足、４Ｆはゴム足取付ネジ、４Ｇはウイングカバーである。
In FIG. 11 which shows the 2nd snow removal apparatus (2nd snow melting panel) of the snowfall prevention apparatus of the large-scale building of this invention, Fig.11 (a) is the top view, FIG.11 (b) is FIG.11 (a). ), And FIG. 11C is an enlarged view of the part a in FIG.
In these drawings, 4A is an aluminum case set, 4B is a tape heater, 4C is a stay, 4D is a mounting screw, 4E is a rubber foot, 4F is a rubber foot mounting screw, and 4G is a wing cover.
このように構成されるので、第２の融雪パネル４はテープヒーター４Ｂがアルミニウムケースセット４Ａに納められてパネル状に配置される。パネルの下部にはゴム足４Ｅが配置されている。また、ステー４Ｃとゴム足４Ｅを有するパネル上は、点検時などには点検者が融雪パネル上を歩行することもできる。
ここで、融雪ヒータの仕様について説明する。
Since it is configured in this manner, the second snow melting panel 4 is arranged in a panel shape with the tape heater 4B housed in the aluminum case set 4A. Rubber feet 4E are arranged at the bottom of the panel. In addition, on the panel having the stay 4C and the rubber feet 4E, the inspector can also walk on the snow melting panel at the time of inspection.
Here, the specifications of the snow melting heater will be described.
融雪ヒータとしては、例えば、セラミック電熱方式（積水化成品工業製 ＴＨ６１０Ｋ）を用いる。ＰＴＣ（Ｐｏｓｉｔｉｖｅ Ｔｅｍｐｅｒａｔｕｒｅ Ｃｏｅｆｆｉｃｉｅｎｔ：正温度係数）セラミックをテープ状に配置したヒーターが好適である。ＰＴＣセラミックは、周囲の温度が高くなるほど電気抵抗が大きくなる性質を持つため、周囲の温度に合わせて自動的に電力量を調整できる。また、形態が柔軟性のあるテープ状であるため、比較的自由に配置することができる。 As the snow melting heater, for example, a ceramic electric heating method (TH610K manufactured by Sekisui Plastics Co., Ltd.) is used. A heater in which PTC (Positive Temperature Coefficient) (positive temperature coefficient) ceramic is arranged in a tape shape is suitable. Since the PTC ceramic has the property that the electrical resistance increases as the ambient temperature increases, the amount of power can be automatically adjusted in accordance with the ambient temperature. Moreover, since the form is a flexible tape shape, it can arrange | position relatively freely.
次に、融雪ヒーターの制御について説明する。
（１）まず、降雪センサー７（図８参照）から降雪強度の信号を受け、その量を積算して積雪量を計算する（ステップＳ１）。
（２）次に、積雪量から電源６からの電力を供給する際の、融雪ヒーター３，４への印加時間を算出する（ステップＳ２）。なお、雪の密度０．１ｇ／ｃｍ3 ，氷の融解熱 ７９．７ｃａｌ／ｇ１ｍ2 当たり
雪の質量 １ｋｇ／ｃｍ
雪の融解熱 ３３３．６２４２ｋＪ／ｃｍ
融雪ヒーター出力は３５０Ｗ／ｍ2 （青森の実験で使用）融雪ヒーター出力
積雪１ｃｍの雪を融かすのに要する時間
１５．９ｍｉｎ→１時間に４ｃｍ融かすとする。
Next, control of the snow melting heater will be described.
(1) First, a snowfall intensity signal is received from the snowfall sensor 7 (see FIG. 8), and the amount of snowfall is integrated to calculate the amount of snowfall (step S1).
(2) Next, the application time to the snow melting heaters 3 and 4 when supplying electric power from the power source 6 from the amount of snow is calculated (step S2). In addition, the density of snow is 0.1 g / cm 3 , the heat of melting of ice is 79.7 cal / g per m 2 , and the mass of snow is 1 kg / cm.
Heat of melting of snow 333.6242 kJ / cm
Snowmelt heater output is 350 W / m 2 (used in the Aomori experiment) Snowmelt heater output Time required to melt snow of 1 cm of snow 15.9 min → 4 cm in 1 hour.
実際には、上記条件で計算された、所要時間Ｔに係数α（１．１〜２．０程度か）を掛けた値αＴを、所要電力印加時間とする。ただし、降雪を感知したら、降雪強度に関らず６０分印加する。
（３）所要電力印加時間と実際の電力印加時間より、残りの電力印加時間を随時計算する（ステップＳ３）。
Actually, a value αT calculated by the above condition and multiplied by a coefficient α (approximately 1.1 to 2.0) is multiplied by the required time T as the required power application time. However, if snowfall is detected, it is applied for 60 minutes regardless of the snowfall intensity.
(3) The remaining power application time is calculated as needed from the required power application time and the actual power application time (step S3).
（４）電源６がＯＮになってから６０分以上、かつ残り電力印加時間が０になったら電力の印加を制御器８で終了にする（ステップＳ４）。
（５）電力の印加終了下時点で融雪ヒーター上に積雪が残っていなければ終了である。
安全係数αは状況に応じて設定変更できるようにする。
冷地において融雪水の凍結による軒樋、縦樋の破損のおそれのある箇所は、上記の制御方法によらず、所定の気温以下となった場合は降雪の有無にかかわらず融雪ヒーターを作動させることとする。
(4) When the power supply 6 is turned on for 60 minutes or longer and the remaining power application time becomes 0, the application of power is terminated by the controller 8 (step S4).
(5) If there is no snow on the snow melting heater at the end of the application of power, the process is complete.
The safety coefficient α can be changed according to the situation.
Regardless of the above control method, the snow melting heater is operated regardless of whether there is snowfall or not in places where there is a risk of damage to the eaves and vertical hoist due to freezing of snow melting water in cold districts. I will do it.
したがって、軒先から雪庇が落下することを有効に防止することができる。
なお、本発明は上記実施例に限定されるものではなく、本発明の趣旨に基づき種々の変形が可能であり、これらを本発明の範囲から排除するものではない。
Therefore, it is possible to effectively prevent the falling snowfall from the eaves.
In addition, this invention is not limited to the said Example, Based on the meaning of this invention, a various deformation | transformation is possible and these are not excluded from the scope of the present invention.
本発明の大規模建物の落雪防止装置は、特に、多雪地域の全覆駅舎における雪害対策として利用可能である。 The snowfall prevention device for large-scale buildings of the present invention can be used particularly as a measure against snow damage in a totally covered station building in a snowy area.
１ 屋根
２ 雪止柵（フェンス）
２Ａ 斜材
３ 第１の消雪装置（第１の融雪パネル）
３Ａ テープヒーター
３Ｂ アルミカバー
３Ｃ アルミケース
３Ｄ アングル材Ａ
３Ｅ アングル材Ｂ
３Ｆ クッション材
３Ｇ ボルト
３Ｈ 断熱底板
３Ｉ 補強用リブ
４ 第２の消雪装置（第２の融雪パネル）
４Ａ アルミニウムケースセット
４Ｂ テープヒーター
４Ｃ ステー
４Ｄ 取付ネジ
４Ｅ ゴム足
４Ｆ ゴム足取付ネジ
４Ｇ ウイングカバー
５ 傘木（第２のフェンス）
６ 電源
７ 降雪センサー
８ 制御器
９ 排水管
１０ オバーフロー管
1 Roof 2 Snow fence (fence)
2A Diagonal material 3 First snow-melting device (first snow melting panel)
3A Tape heater 3B Aluminum cover 3C Aluminum case 3D Angle material A
3E Angle material B
3F Cushion material 3G Bolt 3H Thermal insulation bottom plate 3I Reinforcing rib 4 Second snow-melting device (second snow melting panel)
4A Aluminum case set 4B Tape heater 4C Stay 4D Mounting screw 4E Rubber foot 4F Rubber foot mounting screw 4G Wing cover 5 Umbrella (second fence)
6 Power supply 7 Snowfall sensor 8 Controller 9 Drain pipe 10 Overflow pipe
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| JP2006345144A JP4987454B2 (en) | 2006-12-22 | 2006-12-22 | Snowfall prevention device for large buildings |
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| Application Number | Priority Date | Filing Date | Title |
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| JP2006345144A JP4987454B2 (en) | 2006-12-22 | 2006-12-22 | Snowfall prevention device for large buildings |
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| JP2008156856A JP2008156856A (en) | 2008-07-10 |
| JP4987454B2 true JP4987454B2 (en) | 2012-07-25 |
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|---|---|---|---|---|
| JP2002322771A (en) * | 2001-04-27 | 2002-11-08 | Idemitsu Kosan Co Ltd | Snow melting device for preventing generation of cornice |
| JP2003049517A (en) * | 2001-08-06 | 2003-02-21 | Idemitsu Kosan Co Ltd | Antifreezing device for roof for cold district |
| JP2004068492A (en) * | 2002-08-08 | 2004-03-04 | Snow Techno:Kk | Snow melting system for roof |
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