High temperature electric heater snow melting tool with gliding tool

Abstract

To provide a high temperature electric heater snow melting tool with a gliding tool capable of melting heavy snow without requiring physical strength that much to remove snow on sidewalk or school road where no snow dumping place is present in order to solve a problem in which snow removal work in a snow region is hard work, human suffering caused by overwork including snow removal and snow removal from roof is serious due to decreasing birthrate and aging population, and a snow blower that blows and conveys snow is expensive and also cannot be used at an urban area with a narrow site because no snow dumping place for blowing the snow is present.SOLUTION: A tubular handle (4) and a ski plate (5') are attached to a pipe frame (3) to which a plate heater (2x) is attached, the tubular handle (4) is held in hand to turn on an IC power supply and a temperature control switch (2d) and push the plate heater (2x) that is in high temperature into the mass of snow sequentially to melt the snow, and the ski plate (5') is made to slide and moves uneven snow surface due to melting water. A high temperature electric heater with a gliding tool is used for performing snow melting, in order to eliminate overwork accidents caused by hard work including snow removal on a roof and cutting of hard snow after the removal by using a shovel.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a high-temperature electric heater snow melting device with a sliding device, which uses heat from a high-temperature electric heater snow melting device (1) mounted on a sliding device (5) to melt snow.

Background Art

[0002] Snow removal work in snowy regions is extremely laborious depending on the amount of snow and the quality of the snow such as wet and heavy snow. Heavy snowfalls that occur every few years or locally cause significant damage. Injuries to people due to falls during roof snow removal, snow falling from eaves, and overwork during snow removal work continue. In areas where the population is aging and the number of young people is decreasing and isolated, the elderly have to remove roof snow and snow themselves, resulting in an increase in accidents, and snow removal work is becoming increasingly harsh. On main roads, snow removal and snow plowing work has advanced with the spread of large heavy machinery, but on other roads and individual residential areas, manpower is still relied upon, and there is no other option but to use a scoop or a snow blower to remove snow to a small river or a roadside ditch. However, during the snowfall period, small rivers and roadside ditches quickly overflow with snow, and there is no place to discard the snow. The road becomes uneven due to wheel tracks, causing traffic jams. School routes also have no place to discard the snow and cannot be easily cleared of snow, putting both vehicles and pedestrians at risk. In a logistics society, the impassability of living roads due to snow has a major impact on both individual lives and the regional economy.

[0003] Furthermore, falling snow from eaves can unfortunately result in serious injury or even death due to large amounts of snow. Traditionally, methods have involved using a long pole to knock off snow overhanging the eaves or using an aluminum T-shaped shovel. However, it is not easy to knock the snow off when it is frozen and hard in the morning, and even when the snow begins to soften, it requires considerable strength for housewives or elderly people to knock it off, and there have been cases of people being injured by the falling snow. Many electric snow-melting devices have been devised, but none have been suitable for use in heavy snowfall areas and have not been put into practical use. There are naturally differences in snow removal equipment, snow removal work, and awareness of countermeasures between areas where 20-30 centimeters of snowfall causes great chaos and areas where 1 meter of snowfall does not faze. Snow removal equipment that is easy to hold and move even in cold and heavy snow is needed, as well as considerations for the timing of snow removal work and safety, in addition to the fear of snow. The weight of snow piled on a roof is said to be about 300 kilograms per cubic meter for fresh snow, and even if the halo decreases, the weight is said to increase by about 3 to 5 times when it rains and adds moisture. In snowy regions, it used to not rain in winter, but perhaps due to the effects of global warming, it has become possible to have rainy weather after snowfall. In Hokkaido, too, the temperature used to be low and the snow was light and powdery, blown away by the wind, so not much snow accumulated on the roofs and there was no need to remove it from the roofs. However, in recent years, the snow has become wet and heavy, similar to the snow that falls in the Hokuriku region, and the burden on the roofs has increased. In snowy regions, it is very common for only the eaves and overhangs of houses to be damaged. Even if it is not necessary to remove the snow from the roof, it is said to be best to remove the snow from the overhangs as soon as possible to prevent it from falling on young children. There are snowplows that blow or carry away snow, but they are expensive and cannot be used if there is no space to blow the snow or a place to dispose of the carried snow.

[0004] The standard price for roof snow removal (FY2017, Ono City, Fukui Prefecture) is 14,800 yen per person for a roof area of ​​76 square meters (approximately 23 tsubo), and the work is usually done by 2-3 people. However, this does not include the cost of disposing of the removed snow. In principle, the workers bring their own lunch and equipment, and the client is responsible for their own transportation costs, but due to labor shortages, the price of work is increasing year by year. If there are no snow drainage channels or snow disposal sites, the time and cost will be significantly higher. There are also large-scale roof snow melting systems, but the equipment costs are high and the running costs are also high. In recent years, there has been a tendency for heavy snowfall in short periods, and from December 2017 to early February 2018, there were heavy snowfalls on the Sea of ​​Japan side many times. In particular, early February saw record-breaking snowfall in the Hokuriku region, causing major traffic jams on National Route 8 and earning it the names Hokuriku Heavy Snowfall and Fukui Heavy Snowfall. Between December 16th and 21st, 2020, there were 6 deaths and 21 serious injuries. From January 7th to 14th, there were 21 more deaths and 43 serious injuries, indicating damage caused by snow removal and other related activities due to heavy snowfall. When snow accumulates to a depth of 1 to 1.5 meters or more in a short period, as is known as a "heavy snowfall," conventional snow removal methods are physically demanding. With a declining birthrate and an aging population, there is a shortage of manpower even when work is requested, and it is difficult to secure places to dispose of the snow, making road congestion, house collapses, falling snow from roofs, and accidents from roofs unavoidable. Conventional electric snow melting devices are also unsuitable for heavy snowfall and have not been put into practical use. Regarding snow melting on roofs, there are two methods: one that places electric heating wires under the tiles to warm them, and another that circulates antifreeze heated by a boiler through pipes installed above the tiles to directly melt the snow. However, both methods are expensive, costing around 1 million yen or more for a roof area of ​​76 square meters (approximately 23 tsubo). In terms of running costs, both methods operate when snow begins to fall and accumulates to a few centimeters, as detected by sensors. This is because if the system is activated after 20-30 centimeters or more of snow has accumulated and heat is applied, only the contact surface will melt, leaving a void. Therefore, even on days with only a small amount of snowfall, energy costs will be incurred. In some years, even if 20-30 centimeters of snow accumulates for several days, alternating sunny days may occur, resulting in the roof not having to be cleared of snow, yet energy costs will still be wasted. For roofs in snowy regions designed to withstand the weight of snow, it is more energy-efficient to leave small amounts of snow on the roof until it is on the verge of breaking, rather than clearing it when a certain amount has accumulated.A method of melting snow by spraying it with hot water heated by a boiler, similar to watering a lawn, after 30-40 centimeters of snow has accumulated on the roof was also recommended, but it has not become widespread. [Overview of the project] [Problems that the invention aims to solve]

[0005] The present invention aims to provide a high-temperature electric heater snow melting device with a sliding mechanism that reduces the heavy labor involved in snow removal and disposal caused by heavy snowfall, making it easy for women and the elderly with less physical strength to perform snow removal and disposal work, and reducing dangerous situations and accidents by melting snow and eliminating it even if there is no designated snow disposal site, thereby securing evacuation routes and locations during disasters. [Means for solving the problem]

[0006] The snow melting device with a sliding mechanism of the present invention has a high temperature electric heater (2) with multiple fixing edges (2b), a pipe frame (3) which is attached to the high temperature electric heater (2) fixed to the fixing edges (2b), a hollow reinforcing shaft (3a) provided on the pipe frame (3) and a handle attachment (3b) into which the tip of a hollow cylindrical handle (4) fits onto the reinforcing shaft (3a), a power supply cord (2c) of the high temperature electric heater (2) is passed through a cord pass-through hole (3c) provided in the pipe frame (3) and through a cord pass-through hole (4a) provided in the cylindrical handle (4), and is connected to an IC power supply and temperature control switch (2d) and plug (2e) which incorporate a timer to prevent the heater from overheating. The snow melting device has a sliding mechanism (5) provided on the lower edge of the pipe frame (3) of the high temperature electric heater snow melting device (1).

[0007] The high-temperature electric heater snow melting device with a sliding mechanism of the present invention has a metal plate heater (2x) with a high-temperature electric heater (2) inside the high-temperature electric heater snow melting device (1) that has a fixing edge (2y) at the end of the plate, a metal pipe frame (3) that is attached to the plate heater (2x) fixed to the fixing edge (2y) and welded to it, hollow reinforcing shafts (3a) are provided in a cross shape from the four corners of the sides of the metal pipe frame (3), and a handle attachment (3b) into which the tip of a hollow aluminum cylindrical handle (4) fits is provided at the center where the reinforcing shafts (3a) intersect. The power supply cord (2c) of the high-temperature electric heater (2) is passed through a cord pass-through hole (3c) provided at the top of the metal pipe frame (3) and through a cord pass-through hole (4a) provided at the bottom of the aluminum cylindrical handle (4), and connected to an IC power supply and temperature control switch (2d) and plug (2e) that incorporate a timer to prevent the heater from overheating. A joint (4b) for replacing the handles of the rectangular handle (13) and the extension cylindrical handle (21) with a resin cover is provided at the bottom of the aluminum cylindrical handle (4) of the high-temperature electric heater snow melting device (1). The snow melting device is made of an aluminum pipe frame (3) with two skis (5') attached to the lower edge of the pipe frame (3) at a right angle to the pipe frame (3) using a ski attachment device (5a).

[0008] The snow melting device with a sliding mechanism of the present invention is a snow melting device in which a ski (5') attached to a high-temperature electric heater snow melting device (1) has a length of approximately 50 to 60 centimeters, and a storage container (9) with a lid for a portable power supply (8) placed on the rear of the ski (5') is fixed with fixing brackets (9a) provided on the rear of each of the two skis (5').

[0009] The present invention relates to a snow melting device with a sliding mechanism, in which plate heaters (2x) are mounted to the snow receiving section (14a) of a metal snowper-type high-temperature electric heater snow melting device A (14) by welding or by bolting them with heater fixing bolts and nuts (16), and a ski (5') is provided at the bottom of the snow receiving section (14a) of the snowper.

[0010] The snow melting device with a sliding mechanism of the present invention is a snow melting device of the type of high temperature electric heater in which plate heaters (2x) are welded to the snow receiving part (15a) of a metal snowpper-type high temperature electric heater snow melting device B (15) or bolted and fixed with heater fixing bolts and nuts (16), and a storage container (9) with a lid for a portable power supply (8) is fixed to the rear of the skis (5') with fixing brackets (9a) attached to the lower part of the snow receiving part (15a) of the snowpper, with the length of the skis (5') being about 30 centimeters longer than the snow receiving part (15a) of the snowpper. [Effects of the Invention]

[0011] The snow-melting device with a sliding mechanism of the present invention simply melts the snow sequentially using the heated high-temperature electric heater (2) after turning on the power, making it easy to melt snow even when there are no nearby snow drainage channels or snow disposal sites due to heavy snowfall, or when it is physically difficult to remove snow with a shovel or snow removal snowplow. It also prevents shoulder and back pain caused by cutting hard snow with a shovel. Even if there is no snow disposal site, melting the snow and removing it can reduce dangerous situations and accidents, such as securing evacuation routes and locations during disasters. Every year, even snow overhanging the eaves of roofs can unfortunately result in serious injuries or even fatalities due to large amounts of falling snow. In the early morning before going to work, the snow on the eaves is hard and cannot be removed due to the low temperature, but it falls naturally as the temperature rises and it softens. Even women and the elderly with little physical strength can remove the snow before it falls naturally, preventing accidents that could occur at any time. The high-temperature electric heater snow melting tool with a sliding mechanism combines a high-temperature electric heater (2) and an aluminum cylindrical handle (4), allowing it to melt snow that conventional snow removal tools such as snow snoppers and snowplows could not, eliminating the heavy labor of clearing away snow after it has been removed and piled up. In snowy regions, there are many cases of people being rushed to the hospital due to hyperventilation or acute stroke during harsh snow removal work in the cold, but with the high-temperature electric heater snow melting tool with a sliding mechanism, even elderly people and children with weak arm strength can easily remove snow over a wide area with just a light push, without having to lift and support the aluminum cylindrical handle (4) for extended periods. In terms of novelty and progress in snow removal equipment, the optimal shape is essential depending on whether or not a region suffers significant human and economic damage from heavy snowfall. Metal snowpers, which did not exist during the heavy snowfall of 1963, appeared around 1965, and the later plastic "mama-san dump" snowplows have remained virtually unchanged in shape to this day, with a flat bottom and handles at an angle that make them easy to use even on roofs. They have remained unchanged for over half a century and have become an indispensable snow removal tool. They can do 20 to 30 times more work than shovels or plows.By using this shape to perform electric snow melting, and by attaching skis to the bottom to make it easier to move because the heated bottom melts the snow below and the resistance of the wet snow makes it difficult to slide, a synergistic effect is achieved by combining conventional excellent snow removal equipment with a high-temperature electric heater and skis, adding snow melting and smooth operation that could not be achieved with either equipment alone.

[0012] When using a ladder to climb onto the roof and remove snow, first, as in the traditional method, at the top of the ladder... With one foot on the ladder, support it with one hand and hold a shovel in the other, then use the other hand to remove snow from the eaves and create a foothold to climb onto the roof. Carefully stand in the narrow space on the roof, create a foothold of approximately 2 meters square, and then descend the ladder. Then, pick up the high-temperature electric heater snow melting device with sliding mechanism of the present invention and use it. This is less physically demanding than scooping snow from the roof with a shovel or snow removal snopper and throwing it down, and it eliminates the heavy labor of disposing of the removed snow. If the power cord (2c) gets in the way of the work, the portable power supply (8) of Example 2 can be used instead. Unlike when used on the ground, the portable power supply (8) is not placed on the skis (5') but wrapped in a plastic bag or similar and placed on top of the compacted snow that has not yet melted on the roof so that it does not fall over. As the snow melts, move the portable power supply (8) to the optimal location for the work. When melting snow, it's important to start from the top of the roof. Starting from the top is dangerous because the water flowing into the snow at the eaves will become heavy and put a strain on the eaves. Therefore, snow melting should begin at the eaves and gradually progress towards the top. Stepping into melted snow can be slippery and dangerous, so each person should consider their own route, but the best routes taken by experienced people can also be helpful. Roof snow removal is usually done when the snow depth exceeds 80-100 centimeters, but using the high-temperature electric heater snow melting device with sliding mechanism of this invention for a few hours at that point is cheaper in terms of energy costs than using an expensive roof snow melting system to melt snow every time it snows and prevent snow from accumulating on the roof. The snow melting system installed on the roof is activated by a sensor when snow starts falling and accumulates to a few centimeters. This is because if it is activated after 20-30 centimeters or more of snow has accumulated and heat is applied, only the contact surface will melt, leaving a void where snow will accumulate rapidly, causing problems, and even on days with only light snowfall, energy costs will be incurred. Even in years when roof snow does not need to be removed, the energy costs incurred during the winter are high, and it is more efficient to melt the snow when roof snow removal becomes necessary using the high-temperature electric heater snow melting device with sliding mechanism of the present invention.

[0013] The present invention's high-temperature electric heater snow-melting device with a sliding mechanism can be enlarged and modified in shape depending on the application, allowing it to be attached to heavy machinery, passenger cars, and railway snowplows. This makes it possible to melt snow when snow removal and disposal are insufficient during heavy snowfall, mitigating and reducing road congestion and railway service disruptions due to insufficient snowplow power. Furthermore, when there is no snow disposal site and snow removal and disposal of sidewalks and school routes is impossible, melting the snow makes passage possible, which is useful in securing evacuation routes and locations during disasters. [Brief explanation of the drawing]

[0014] [Figure 1] This is an explanatory reference plan view of the high-temperature electric heater (2) according to the present invention. [Figure 2] This is an enlarged cross-sectional view of a portion of the side surface of a pipe frame (3) that is superimposed on a high-temperature thermoelectric heater (2) according to the present invention. [Figure 3] This is an explanatory perspective view of the high-temperature electric heater snow melting device (1) with a sliding device according to the present invention. [Figure 4] This is an explanatory perspective view of the sliding device mounting bracket (5a) and sliding device mounting bracket receiver (3d) of the high-temperature electric heater snow melting device with a sliding device according to the present invention. [Figure 5] This is a reference diagram of Example 1 of the high-temperature electric heater snow melting device with a sliding mechanism according to the present invention. [Figure 6] This is an explanatory side view of a high-temperature electric heater snow melting device with a sliding mechanism, which is mounted in a storage container (9) with a lid that houses a portable power supply (8) according to Embodiment 2 of the present invention. [Figure 7] This is a partial longitudinal cross-sectional explanatory reference diagram of the extended cylindrical handle (21) with a resin cover according to the present invention. [Figure 8] This is an explanatory reference diagram showing the rear of the plate heater (2x) of the snowpper-type high-temperature electric heater snow melting device A(14) of the present invention as being tilted upwards. [Figure 9] This is an explanatory reference diagram of a snow-melting device B (15) of the snow-melting type high-temperature electric heater, which is equipped with a storage container (9) with a lid for housing a portable power supply (8) according to Embodiment 4 of the present invention. [Figure 10]This is an explanatory reference diagram illustrating the use of the extended cylindrical handle (21) with a resin cover according to the present invention. [Figure 11] This is an explanatory diagram showing a reference example of a route for removing snow from a roof using the high-temperature electric heater snow melting device with a sliding mechanism according to the present invention. [Modes for carrying out the invention] [Examples]

[0015] The snow melting device with a sliding mechanism of the present invention has a nichrome wire, which is the heating element of the high-temperature electric heater (2), insulated with a heat-resistant mica plate and covered with stainless steel, Bordeaux steel plate, etc., to create a tight seal. Fixing edges (2y) are provided at both ends of the plate of the metal plate heater (2x) installed inside. A metal pipe frame (3) is welded to the metal plate heater (2x) which is fixed to the fixing edges (2y), and hollow reinforcing shafts (3a) are provided in a cross shape from the four corners of the sides of the metal pipe frame (3). A handle attachment (3b) into which the tip of a hollow aluminum cylindrical handle (4) fits is provided at the center where the reinforcing shafts (3a) intersect. A power supply cord (2c) from the non-heating section (2a) of the high-temperature electric heater (2) is passed through a cord pass-through hole (3c) provided at the top of the metal pipe frame (3) and through a cord pass-through hole (4a) provided at the bottom of the aluminum cylindrical handle (4), and connected to an IC power supply and temperature control switch (2d) and plug (2e) that incorporate a timer to prevent the heater from overheating. A joint (4b) for replacing the handles of the square handle (13) and the extension cylindrical handle (21) with a resin cover is provided at the bottom of the aluminum cylindrical handle (4) of the high-temperature electric heater snow melting device (1), and a ski (5') is provided on the lower edge of the aluminum pipe frame (3). Instead of repeatedly scooping up large amounts of snow or wet, heavy snow with a shovel or snow removal snowplow and carrying it to the snow disposal area, in Example 1, the user holds the aluminum cylindrical handle (4) of the high-temperature electric heater snow melting device with a sliding mechanism in their hand and slides a ski (5') along it. The user turns on the power switch of the IC power supply and temperature control switch (2d) which incorporates a timer switch to prevent the heater from overheating, attached to the plate heater (2x) attached to the Velcro® fastening band (11) at the bottom of the aluminum cylindrical handle (4), and pushes the heated plate heater (2x) into the snow mass. Once the snow melting is finished in a few seconds, the user pushes the heater into the next mass and moves on, melting snow without expending physical strength. To melt a large amount of snow, a heat output of 400°C or more is required, and with a 100-volt voltage specification, there is a limit to the length of the heater even if the watt density is increased.Taking the high-temperature electric heater (2) as a high-heat heater with a voltage specification of 200 volts, in order to prevent the dry burning of the high-temperature electric heater (2), the dry-burning prevention timer switch (2d) of the heater is set to turn off within a few minutes. After the power is turned off, wait for a while and then turn on the power again to repeat snow melting. This is also a safety measure when the physical condition suddenly breaks down during work in cold regions and snow melting work becomes impossible, and it prevents the dry burning of the high-temperature electric heater (2). When the melted snow leaves shabby snow on the ground, even the snow snooper, which has been in use for snow removal in snow countries for 57 years, has a load on the shabby snow and it becomes difficult to move. To compensate for this drawback, the ski board (5’) is used on the skid provided at the lower part of the pipe frame (3) to move while sliding. Most of the meltwater flows into the lower side ditch even with a slight gradient, but the ski board skids are suitable for the remaining shabby snow. The surface temperature of the plate heater (2x) is changed according to the weather conditions, the outside air temperature, whether the fresh snow is fluffy snow, frozen snow, or solidified snow. When taking a break due to work fatigue or errands, turn off the power of the IC power supply and temperature control switch (2d) incorporating the dry-burning prevention timer of the heater, and support and place the lower part of the cylindrical handle (4) with the aluminum cylindrical handle support stand (12). Even when the snow protruding from the eaves of the roof is frozen and hard and cannot be removed with conventional snow removal tools, in order to prevent accidents caused by natural falling when the height reached by the cylindrical handle (4) is reached, instead of directly above the snow protruding from the eaves, the plate heater (2x) is pushed obliquely into the snow protruding 40 - 50 centimeters horizontally to melt the snow. When the height cannot be reached, an extended cylindrical handle (21) with a resin cover is attached to the joint (4b) for handle replacement at the lower part of the cylindrical handle (4), and the metal flexible pipe (21a) of the extended cylindrical handle (21) with a resin cover is bent into a V-shape to fit the slope of the roof, and the plate heater (2x) is pushed into the snow 40 - 50 centimeters horizontally instead of directly above itself to melt the snow. In that case, it is also possible to remove the ski board (5’) and use it. It is also possible to remove the IC power supply and temperature control switch (2d) from the magic tape (registered trademark) fastening band (11) and put it in the pocket of the cold-proof clothing to work.

Example

[0016] Example 2 is a high-temperature electric heater snow-melting device with skids, in which the length of the ski board (5') is about 50 to 60 centimeters, and a storage container (9) with a lid for a portable power source (8) placed on the rear part of the ski board (5') is fixed by fixing brackets (9a) provided at the rear part of each of the two ski boards (5'). The portable power source (8) is used.

Example

[0017] Example 3 is a snooper-type high-temperature electric heater snow-melting device A (14) bolt-mounted with heater fixing bolts and nuts (16), in which the fixing edge (2y) of the plate heater (2x) of the high-temperature electric heater snow-melting device (1) of the present invention is welded and fixed to the snow receiving part (14a) of a conventional snow removal snooper. To prevent the snow remaining on the ground from becoming shabby and making it impossible to move with a snooper with a flat bottom due to friction during snow melting, a ski board (5') is provided as a skid at the lower part of the snooper. It is a snooper-type high-temperature electric heater snow-melting device with skids.

Example

[0018] Example 4 is a snooper-type high-temperature electric heater snow-melting device with skids equipped with a portable power source (8). The plate heater (2x) is welded or bolt-mounted with heater fixing bolts and nuts (16) to the snow receiving part (15a) of a metal snooper-type high-temperature electric heater snow-melting device B (15). The length of the ski board (5') is made about 30 centimeters longer than the snow receiving part and behind the snow receiving part at the lower part of the snow receiving part (15a) of the snooper, and a storage container (9) with a lid for a portable power source (8) placed on the rear part of the ski board (5') is fixed by fixing brackets (9a) provided at the rear part of each of the two ski boards (5').

[0019] Figure 1 is an explanatory reference plan view of the high-temperature electric heater (2) of the high-temperature electric heater snow melting device with a sliding mechanism according to the present invention. The high-temperature electric heater (2), such as a sheathed heater, is wound in a spiral shape, and a power supply cord (2c) is brought out from the non-heating part (2a). Rectangular fixing edges (2b) made of heat-resistant material are welded and fixed to the top, bottom, left, and right sides of the back surface of the high-temperature electric heater (2).

[0020] Figure 2 is an enlarged cross-sectional view of a part of the side of a metal pipe frame (3) that is superimposed on a high-temperature electric heater (2) according to the present invention. Fixing edges (2b) made of heat-resistant material are provided on the top, bottom, left, and right sides of the back side of the metal plate heater (2) and welded to the metal pipe frame (3). The power supply cord (2c) from the non-heating part (2a) of the high-temperature electric heater (2) is passed through a waterproof cord pass-through hole (3c) provided on the top of the metal pipe frame (3) into the hollow reinforcing shaft (3a) and through an aluminum cylindrical support handle (4).

[0021] Figure 3 is an explanatory perspective view of the high-temperature electric heater snow melting device (1) of the high-temperature electric heater snow melting device with a sliding device according to the present invention. The nichrome wire, which is the heating element of the high-temperature electric heater (2), is insulated with a heat-resistant mica plate and covered with stainless steel, Bordeaux steel plate, etc., to form a metal plate heater (2x) inside. Long, thick fixing edges (2y) are provided at both ends of the metal plate heater (2x), and a metal pipe frame (3) is welded to it. Hollow reinforcing shafts (3a) bent into a cross shape and a U shape are welded from the four corners of the sides of the pipe frame (3), and a hollow handle mounting bracket (3b) with a female thread that fits into the male threaded end of a hollow aluminum cylindrical handle (4) is welded to the center where the reinforcing shafts (3a) intersect. The power supply cord (2c) is passed through the outlet of the waterproofed power supply cord (2c) of the high-temperature electric heater (2), the cord pass-through hole (3c) provided at the top of the metal pipe frame (3), the handle attachment (3b), and the cord pass-through hole (4a) provided at the bottom of the aluminum cylindrical handle (4), and connected to the IC power supply and temperature control switch (2d) and plug (2e) which incorporates a timer switch to prevent the heater from overheating. A Velcro® type fastening band (11) that holds the IC power supply and temperature control switch (2d) is attached to the bottom of the aluminum cylindrical handle (4) with adhesive. A male screw is cut into the bottom of the aluminum cylindrical handle (4), and a female screw is cut into the handle replacement joint (4b) and fitted together. The square handle (13) is attached to the tip of the handle replacement joint (4b) with a male screw provided at the bottom of the square handle (13). Two sliding device mounting brackets (3d) are glued and fixed at intervals around the lower edge of the metal pipe frame (3), so as to wrap around the pipe. The power supply cord (2c) has a cord pass-through hole (3c) and (4a), and the circuit is made to prevent electrical leakage and waterproofing.

[0022] Figure 4 is an explanatory perspective view of the ski mount (5a) and ski mount receiver (3d) according to the present invention. The ski mount (5a) is attached to both left and right skis (5') which are twin-tip shaped with both the tip and tail curved upwards, allowing the ski mount to slide not only forward but also backward, making it easy to change direction and move. The ski mount (5a) is then fastened with screws (5b). The ski mount receiver (3d), made of resin, is attached to the lower edge of the metal pipe frame (3) with strong adhesive, and the metal fixing level band (floor band) (5c) of the ski mount (5a) is fastened to the middle part of the reinforcing shaft (3a) of the pipe frame (3). The ski mount (5a) is fastened to the intermediate part of the reinforcing shaft (3a) of the pipe frame (3) with a metal fixing support (5d) and a swivel pipe clamp (5e) which are provided at the rear of the ski mount (5a) facing diagonally upward.

[0023] Figure 5 is a reference diagram of Embodiment 1 of the high-temperature electric heater snow melting device with a sliding device according to the present invention. A ski (5') is attached to the lower edge of the pipe frame (3) of the high-temperature electric heater snow melting device (1) using a sliding device attachment (5a), so that the front part of the plate heater (2x) and the tip of the ski (5') are almost in line. Holding the cylindrical handle (4) in the hand, the ski (5') is slid while pushing, and the power switch of the IC power supply and temperature control switch (2d) of the plate heater (2x), which is attached to the Velcro® fastening band (11) at the bottom of the cylindrical handle (4), is turned on, and the heated plate heater (2x) is pushed into the snow mass. Once the snow melting is finished in a few seconds, the user pushes it into the next mass and moves on, melting snow without using physical strength. Although slushy snow remains on the ground from the melted snow, it can be moved by sliding on the ski (5'). This example illustrates how, when taking a break due to fatigue or other reasons, the power to the IC power supply and temperature control switch (2d) is turned off, and the lower part of the cylindrical handle (4) is supported by a cylindrical handle support stand (12) which has a U-shaped receiving part (12a) on top and a four-legged base part (12b) on the bottom.

[0024] Figure 6 is an explanatory side view of a lidded storage container (9) for housing a portable power supply (8) according to Embodiment 2 of the present invention. The length of the skis (5') of the high-temperature electric heater snow melting device with sliding equipment is made to about 50-60 centimeters, and L-shaped fixing brackets (9a) are screwed to the rear of each of the two skis (5'), and the lidded storage container (9) for housing the portable power supply (8) is secured to the skis (5') with male screws (6) and female screws (7). Screws are also made to the bottom of the inside of the lidded storage container (9) for securing the skis (5').

[0025] Figure 7 is a partial longitudinal cross-sectional explanatory reference diagram of the extension cylindrical handle (21) with a resin cover according to the present invention. The surface of the metal flexible pipe (21a) is covered with the extension cylindrical handle (21) with a durable, plastic resin cover, and it engages with the female thread of the handle replacement joint (4b). A male threaded portion (21b) is provided at the tip of the metal flexible pipe (21a).

[0026] Figure 8 is an explanatory reference diagram of the snowpper-type high-temperature electric heater snow melting device A(14) of Embodiment 3 according to the present invention, in which the fixing edge (2y) of the plate heater (2x) is bolted and fixed to the snow receiving part (14a) of the snowpper with heater fixing bolts and nuts (16) welded to the snow receiving part (14a) of the snowpper. Two skis (5') are attached to the snow receiving part (14a) of the snowpper with a gap in between, using fixing screws (5b) or adhesive fixing. Drainage holes (17) are cut out on the side of the snow receiving part (14a) of the snowpper. Handles (18) are welded and fixed in a U-shape from both sides of the snow receiving part (14a) of the snowpper, pointing diagonally upward.

[0027] Figure 9 is an explanatory reference diagram of the snowpper-type high-temperature electric heater snow melting device B(15) of Embodiment 4 according to the present invention, in which the fixing edge (2y) of the plate heater (2x) is bolted and fixed to the snow receiving part (15a) of the snowpper with heater fixing bolts and nuts (16) welded to the snow receiving part (15a) of the snowpper. Two skis (5') are placed below the snow receiving part (15a) of the snowpper, with a gap between them, and are extended approximately 30 centimeters further back than the dimensions of the snow receiving part, and are attached by fixing screws (5b) or adhesive fixing. An L-shaped fixing bracket (9a) is screwed to the rear of each ski (5') and attached to the side of a lidded storage container (9) that houses a portable power supply (8) with male screws (6) and female screws (7). Screws are also attached to the skis (5') from the bottom inside the lidded storage container (9). Drainage holes (17) are cut out from the side of the snow receiving section (15a) of the snow hopper. Handles (18) are welded to both sides of the snow receiving section (15a) of the snow hopper in a U-shape, pointing diagonally upward.

[0028] Figure 10 is an explanatory reference diagram of the use of the resin-covered extension cylindrical handle (21) according to the present invention. In order to prevent snow that has overflowed onto the eaves from falling, if the cylindrical handle (4) cannot reach the height, the resin-covered extension cylindrical handle (21) is attached to the handle replacement joint (4b) at the bottom of the cylindrical handle (4), and the metal flexible pipe (21a) of the resin-covered extension cylindrical handle (21) is bent into a V-shape to match the slope of the roof, and the plate heater (2x) is pushed diagonally into the snow 40-50 centimeters to the side, rather than directly above, to melt the snow. Even if the snow is frozen and hard before going to work and cannot be removed with conventional snow removal tools, the snow may soften in the sunlight during the day and fall naturally. To prevent accidents caused by unpredictable natural falling snow, the plate heater (2x) is pushed diagonally into the snow overflowing onto the eaves in advance to melt it. In that case, it is also possible to remove the skis (5') and use them. The IC power supply and temperature control switch (2d) can also be detached from the Velcro® fastening band (11) and placed in the pocket of the cold-weather clothing for use during work.

[0029] Figure 11 is an explanatory diagram showing a reference example of the procedure for removing snow from a roof using the high-temperature electric heater snow melting device with a sliding mechanism according to the present invention. When climbing onto the roof using a ladder to remove snow, first, as in the conventional method, place your foot on the top of the ladder, support the ladder with one hand, hold a shovel in the other hand, and use the other hand to remove the snow from the eaves to create a foothold for climbing onto the eaves of the roof. Then, carefully stand in the narrow space on the roof to create a foothold of approximately 2 meters square, and descend the ladder. Then, pick up the high-temperature electric heater snow melting device with a sliding mechanism according to the present invention and use it. If the power cord (2c) gets in the way of the work and is inconvenient, a portable power supply (8) can also be used. Unlike when using it on the ground, the portable power supply (8) is not placed on the skis (5') but wrapped in a plastic bag or similar and placed on top of the compacted snow that has not yet melted on the roof so that it does not fall over. As the snow melts, move the portable power supply (8) to the most suitable place for the work. When melting snow, start from the top of the roof. Starting from the top of the roof is dangerous because the water that flows into the snow piled up at the eaves will become heavy and put a strain on the eaves. Start melting snow from the eaves and gradually work your way up. Stepping into areas where snow has been melted can be slippery and dangerous, so move carefully. The numbered areas in Figure 11 indicate the route for safe snow melting. The shaded areas are places where snow should be left untouched for 30-40 centimeters from the roof surface to serve as footholds, and where you should melt the snow by backing up at the end. It is also possible to remove the skis (5') and hold the cylindrical handle (4) in your hand while working to melt the snow. While this method is less physically demanding than traditional snow removal, which involves scooping up snow with snowplows, carrying it to the eaves, and sliding it down to the ground, it's important to be careful and consider safe routes when melting snow until you become accustomed to the process.

[0030] To melt large amounts of snow, a heater temperature of 400°C or higher is required. With a 100V voltage, even increasing the watt density limits the length of the heater, making snow melting impossible. Snow melting in snowy regions requires a high-temperature electric heater (2) with a voltage of 200V. The estimated penetration rate of 200V voltage contracts in general households is increasing due to the increased use of large appliances such as air conditioners, induction cooktops, storage heaters, and water heaters. Newly built houses are mostly all-electric with 100V / 200V lines. Businesses and households equipped with electric heaters for roof snow melting systems, as well as systems that circulate antifreeze heated by boilers, also mostly use 100V / 200V lines. Due to the declining birthrate and aging population, there are limits to the manual snow removal methods used during the heavy snowfalls of 1938 and 1956. Furthermore, while conventional electric snow melting devices and wheeled snow removal devices may be effective in areas with little snowfall, they cannot melt accumulated snow in areas with heavy snowfall, and wheels are completely useless against heavy snow or snow mixed with water. The high-temperature electric heater snow melting device with a sliding mechanism and the snover-type high-temperature electric heater snow melting device A(14) according to the present invention combine the shape of a conventional excellent snow removal device snover with a high-temperature electric heater (2) and a ski (5'), thereby adding snow melting capabilities and smooth operation that were not possible with the devices alone, resulting in a synergistic effect.

[0031] The pipe frame (3) and reinforcing shaft (3a) can be made of various metals or other lightweight materials, and their shapes can be other than square. The connection between the pipe frame (3) and the high-temperature electric heater (2) can be made by bolting or other methods in addition to welding. The high-temperature electric heater (2) and plate heater (2x) can also be made of various materials and forms. The cylindrical handle (4) can be made of aluminum or other materials, and its length and shape can be varied. The extension cylindrical handle (21) with a resin cover can also be made of various shapes and materials. Plate heaters (2x) can be mounted on the snow receiving parts (14a) and (15a) of existing snowpers by welding or other mounting methods in addition to bolting. The sliding device mounting hardware (5a) can also be mounted in ways other than level bands (5c) or adjustable pipe clamps (5e). The skis (5') can be made of one wide ski like a snow sled or snowboard, instead of two skis. However, two skis may make it less likely to tip over on uneven snow surfaces. It is also possible to attach the cylindrical handle support stand (12) to the cylindrical handle (4). [Explanation of Symbols]

[0032] 1. High-temperature electric heater snow melting device 2. High-temperature electric heater 2a Non-heating part of the electric heater 2b Fixing edge 2C power supply cord 2d IC power supply and temperature control switch 2e plug 2x Plate Heater 2y Fixing Edge 3 Pipe frame 3a Reinforcement shaft 3b Handle mounting bracket 3c Cord pass-through hole 3D slide attachment bracket, 4 cylindrical handles 4a Cord pass-through hole 4b Joint for handle replacement 5. Sliding device 5a. Sliding device mounting device 5b Retaining screw 5c Metal fitting fixing level band 5d Metal fittings for fixing support posts 5e Adjustable pipe clamp 5' Skis 6 Male Screw 7 Female thread 8 Portable power supply 9 Storage container with lid 9a Fixing hardware 11. Velcro (registered trademark) fastening band 12. Cylindrical handle support stand 12a. U-shaped receiving part 12b Four-legged base 13 Square handle 14. Snow-melting device A with snow-snow-melting mechanism, high-temperature electric heater, 14a. Snow-receiving part of the snow-snow-melting device. 15. Snow-melting device B with snow-snow-melting mechanism, high-temperature electric heater, 15a. Snow-receiving part of the snow-snow-melting device. 16 Heater fixing bolts and nuts 17 Snopper drain hole 18. Handle of the snooper 21. Extension cylindrical handle with resin cover 21a Metal flexible pipe 21b Male threaded section

Claims

1. A high-temperature electric heater snow melting device with a sliding device is provided on the lower edge of the pipe frame (3) of the high-temperature electric heater (1), which is connected to a plurality of fixing edges (2b), a pipe frame (3) placed on top of the high-temperature electric heater (2) fixed to the fixing edges (2b), a hollow reinforcing shaft (3a) is provided on the pipe frame (3), and a handle attachment (3b) into which the tip of a hollow cylindrical handle (4) fits is provided on the reinforcing shaft (3a), and a power supply cord (2c) of the high-temperature electric heater (2) is passed from a cord passing hole (3c) provided in the pipe frame (3) through a cord passing hole (4a) provided in the cylindrical handle (4), and a sliding device (5) is provided on the lower edge of the pipe frame (3) of the high-temperature electric heater snow melting device (1), which is connected to an IC power source and a temperature control switch (2d) and a plug (2e).

2. A fixing edge (2y) is provided at the end of the plate of a metal plate heater (2x) having a high-temperature electric heater (2) installed inside, a pipe frame (3) is provided on top of the plate heater (2x) fixed to the fixing edge (2y), a hollow reinforcing shaft (3a) is provided on the pipe frame (3), and a handle attachment (3b) into which the tip of a hollow cylindrical handle (4) fits is provided, and a power supply cord (2c) for the plate heater (2x) is passed from a cord hole (3c) provided in the pipe frame (3) through a cord hole (4a) provided in the cylindrical handle (4) and connected to an IC power source and a temperature control switch (2d) and a plug (2e). A high-temperature electric heater snow melting device with a sliding tool is attached to the lower edge of the pipe frame (3) of the high-temperature electric heater snow melting device (1), with two skis (5') as sliding tools attached to the pipe frame (3) with a space between them at right angles to the pipe frame (3) using sliding tool attachment tools (5a).

3. 3. A high-temperature electric heater snow melting device with sliding gear according to claim 2, wherein the length of the skis (5') is about 50 to 60 centimeters, and a lidded storage container (9) for a portable power source (8) mounted on the rear of the skis (5') is fixed with fixing brackets (9a) provided at the rear of each of the two skis (5').

4. 3. A snopper-type high-temperature electric heater snow melting tool with a sliding device according to claim 2, wherein a metal plate heater (2x) with a high-temperature electric heater (2) installed inside is fixed to the snow receiving part (14a) of the snopper of the snopper-type high-temperature electric heater snow melting tool A (14) by welding or by heater fixing bolts and nuts (16), and skis (5') are attached to the lower part of the snow receiving part (14a) of the snopper with a gap therebetween.

5. 10. The high-temperature electric heater snow melting device with sliding gear according to claim 4, wherein the plate heater (2x) is fixed to the snow receiving part (15a) of the snopper type high-temperature electric heater snow melting device B (15) by welding or by heater fixing bolts and nuts (16), the skis (5') are attached to the lower part of the snow receiving part (15a) of the snopper with a gap between them, the length of the skis (5') is extended rearward from the snow receiving part (15a) of the snopper by about 30 centimeters, and a lidded storage container (9) for a portable power source (8) placed on the rear of the skis (5') is fixed with fixing brackets (9a) provided at the rear of each of the two skis (5').

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