JPH0573016U - curve-mirror - Google Patents

Abstract

(57) [Abstract] [Purpose] A curve mirror is provided with a function of preventing dew condensation on the mirror plate, and the purpose is to prevent fogging of the mirror plate caused by cooling of the outside air. [Structure] A lid 1b is attached to the back surface of the mirror plate 1a to form a curve mirror main body 1, and a heat insulating space 1e is formed inside the curve mirror main body 1 on the back side of the mirror plate 1a. A heater 4 that is heated by power supply is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a curved mirror having an anti-fog function for a mirror plate.

[0002]

[Prior Art]

 Conventionally, curved mirrors installed at the corners of roads are configured by bending stainless steel, acrylic plate, glass mirror plate, etc., and attaching a back cover that is a mounting frame for columns etc. to the back surface of the mirror plate whose surface is mirror-finished. Has been done.

[0003]

[Problems to be solved by the device]

 In the conventional curved mirror configured as described above, the surface temperature of the end plate becomes low from night to early morning, especially with radiant cooling at dawn, and the moisture in the air touching this end plate is condensed and adheres. , The end plate often becomes cloudy.

As described above, if the mirror plate becomes cloudy, the visibility on the mirror plate is deteriorated, which naturally hinders safe traffic.

According to the present invention, the above-mentioned conventional curve mirror is provided with a function of preventing dew condensation on the end plate, thereby preventing fogging of the end plate caused by a decrease in temperature and an increase in humidity. To aim.

[0006]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention forms a curved mirror body by attaching a lid to the rear surface of the mirror plate, forms a heat retaining space inside the curve mirror body on the back side of the mirror plate, and supplies power to the heat retaining space. It is provided with a heater that is heated by power supply from the. In the curve mirror of the present invention, a lid is attached to the back surface of the mirror plate to form the curve mirror body, and a gel-like or liquid heat storage agent is provided inside the curve mirror body on the back side of the mirror plate via a heat retaining space. A heat storage container that accommodates the heat is provided, and a heater that is heated by power supply from a power source is provided in the heat retaining space. The curved mirror described above is provided with a control unit for controlling power supply from the power source to the heater, and the control unit is provided with a dew condensation sensor, which detects the condition of dew condensation on the surface of the mirror plate. It is advisable to provide a control means for supplying electric power to the heater only when the above condition is detected or when the condition immediately before dew condensation is detected.

[0007]

[Action]

 According to the above means, the heater provided in the internal space of the curve mirror body is heated by the electric power supplied from the power source, and the heat of the heater warms the air in the heat retaining space of the curve mirror body. The warm air in the heat-retaining space entirely contacts the back surface of the end plate, which keeps the end plate evenly heated and prevents dew condensation.

According to the curved mirror of the second aspect, the heat energy is absorbed and stored in the gel heat storage agent in the heat storage container due to the temperature rise in the daytime, and this heat energy is gradually radiated as the temperature decreases from night to morning. To be done. The heat released from the heat storage container warms the end plate to a temperature above the outside air through the heat retaining space (air layer) to prevent dew condensation on the mirror surface. The air layer secured by the heat insulation space prevents the heat energy stored in the heat storage container from being directly emitted to the mirror plate and maintains stable heat dissipation for a long time. Further, when the heat storage in the heat storage container has reached the bottom due to strong cooling, the air in the heat retaining space is warmed by heating the heater as described above, whereby the heat of the end plate can be continuously maintained.

Further, by providing the curve mirror with the control unit, the power supply from the power supply to the heater is performed via the control unit. The control means of the control unit is provided with a dew condensation sensor, and the dew condensation sensor detects various conditions for the occurrence of dew condensation. Then, when the dew condensation sensor detects a dew condensation condition due to a decrease in temperature or an increase in humidity, or when a condition immediately before dew condensation occurs, the control means starts supplying power to the heater. To warm the end plate.

[0010]

[Effect of the device]

 As described above, the present invention warms the air in the warm space by heating the heater using the electric power supplied from the power source, and the warm air keeps the end plate warm from the back side. Therefore, it is possible to efficiently and evenly heat the end plate to effectively prevent dew condensation on the end plate surface.

Since the curved mirror of claim 2 is provided with the heat storage container and the heater in combination, a large amount of heat energy is stored in the gel heat storage agent in the heat storage container during the daytime, and this heat energy is stored. In the time period when the temperature decreases from night to morning, the end plate can be warmed for a long time while radiating heat gently through the air layer of the heat retaining space, and also when the heat storage by the heat storage container bottoms out By heating the heater provided in the space, it is possible to keep the end plate warm and prevent fogging. Therefore, it is possible to effectively use the thermal energy of the heat storage to suppress the consumption of electric power as much as possible, and even if the cold storage is strong and the heat storage in the heat storage container is bottomed out, the heat retention of the end plate is continued to generate fogging. Can be prevented.

In the curved mirror of the third aspect, which is provided with a control unit, the power supply from the power source to the heater is controlled so that it is performed only when dew condensation occurs on the end plate. Therefore, the heater is not wasted under the condition that the end plate is not fogged, so that the electric power supplied from the power source can be effectively used and the end plate can be reasonably prevented from being fogged.

[0013]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

The curve mirror A1 shown in FIGS. 1 and 2 is composed of a curve mirror body 1, a solar cell unit 2 and a control section 3, and the heater 4 provided in the internal space of the curve mirror body 1 is described above. The solar cell unit 2 is heated by electric power to warm the air in the internal space 1e, and the end plate 1a is kept warm via this warm air.

The curved mirror main body 1 is configured by providing a lid 1b on the back side of a mirror plate 1a formed by curving a circular stainless steel plate in a convex shape, and joining and integrating the outer peripheral portions thereof. Further, a partition plate 5 is interposed between the end plate 1a and the lid body 1b described above and sandwiched between them. By sandwiching the partition plate 5 between the end plate 1a and the lid 1b as described above, the inside of the curved mirror body 1 is divided into two parts with the partition plate 5 sandwiched therebetween, and the space on the front side thereof. Is used as a heat retaining space 1e, and the space on the back side is filled with a heat insulating material 6 made of foamed urethane or the like. The heat insulating material 6 prevents unnecessary heat dissipation from the heat retaining space 1e and enhances heat retaining efficiency.

The partition plate 5 described above is effective for surely supporting the heater 4 and further for securely holding the heat insulating material 6. However, the partition plate 5 has a heat insulating property like the curved mirror A1 ′ shown in FIG. It can be configured without providing a partition plate between the material 6 and the internal space 1e, and in this case, the support piece 7 of the heater 4 is attached to the lid body 1b.

A heater 4 is provided in the heat retaining space 1e. The heater 4 is supported by a support piece 7 attached to a partition plate 5 as shown in FIG. 1, and is provided in a wide meandering shape as shown in FIG.

The solar cell unit 2 that supplies electric power to the heater 4 described above includes a solar cell substrate 2b on which a large number of solar cell elements 2a are arranged without a gap, and a storage battery that stores the electric power generated by the element 2a. 2c, and the solar cell substrate 2b is attached along the upper surface of the eaves 1d provided along the upper peripheral edge of the curved mirror body 1. Ideally, the above-mentioned solar cell substrate 2b is mounted in a state of receiving sunlight at a right angle, and therefore the above-mentioned substrate 2b is also mounted with a predetermined inclination. Further, the above-mentioned solar cell substrate 2b may be attached and supported so that its inclination angle and direction can be variably adjusted.

The control unit 3 provided on the back side of the curved mirror body 1 controls the power supply from the storage battery 2c of the solar cell unit 2 to the heater 4, and includes a microcomputer as a control means. It has a switch function to turn on / off the power supply from the solar cell unit 2 to the heater 4 under predetermined conditions. Further, the control unit 3 includes a dew condensation sensor 3a, and by arranging the dew condensation sensor 3a at an appropriate position on the surface of the end plate 1a, it is detected whether or not dew condensation occurs on the surface of the end plate 1a. As the dew condensation sensor 3a, for example, an existing temperature / humidity multifunction sensor is used, and the surface temperature and the humidity value of the end plate 1a are simultaneously detected. Then, the control unit 3 supplies the electric power to the heater 4 when the temperature and humidity values detected by the dew condensation sensor 3a fall within the condition range when dew condensation occurs, or when the values immediately before the dew condensation occurs. Start.

According to the curved mirror A1 configured as described above, when the element 2a of the solar cell unit 2 is exposed to sunlight during the daytime, it is converted into electric energy by the photoelectric effect of the element 2a. Power is generated, and the storage battery 2c is charged with this power. Then, the charging of the storage battery 2c increases or decreases with a change in the amount of sunlight, but continues during the daytime. Under normal weather conditions, since the outside air temperature is high during the daytime due to the sunshine, the end plate 1a is unlikely to fog. Therefore, during the daytime, the electric power generated by the solar cell unit 2 is not supplied to the heater 4 as described above, but is entirely charged in the storage battery 2c.

Then, when the condition that dew condensation occurs on the surface of the end plate 1a due to the relationship between the decrease in the outside air temperature and the humidity contained in the outside air due to the radiative cooling at night or in the morning, the temperature decrease and the humidity value are used as the dew condensation sensor 3a. Is detected, the control unit 3 determines the occurrence of dew condensation based on this value, and starts supplying power to the heater 4. When the heater 4 is heated, the air in the heat retaining space 1e is warmed up, and then the end plate 1a that touches this warm air is kept warm. As a result, the surface of the end plate 1a is kept warmer than the dew point temperature and the occurrence of dew condensation is prevented. The heat retention of the end plate 1a performed as described above is continued until the electric power charged in the storage battery 2c is exhausted. When the temperature of the outside air rises while the temperature is being maintained by the heater 4 and the possibility of dew condensation disappears, the control unit 3 uses the temperature sensor 3b provided separately from the above dew condensation sensor 3a. The rise of the temperature is detected and the power supply to the heater 4 is stopped.

Therefore, according to the above-mentioned curve mirror A1, the heater 4 can be heated by utilizing the electric energy generated by the solar cell unit 2 during the daytime, and the end plate 1a is heated by the heater 4 Since it is kept warm by being in full contact with the warm air in the warming space 1e warmed by, the heat is efficiently and evenly kept, which effectively prevents fogging on the end plate 1a. You can Further, since the power supply to the heater 4 is controlled by the control unit 3 so that the power is supplied to the heater 4 only under the condition that the dew condensation occurs on the end plate 1a, the heat retention of the end plate 1a is useless. It is possible to prevent the fogging of the end plate 1a rationally by effectively utilizing the electric energy stored in the storage battery c.

Although the above-mentioned curve mirror A1 heats the heater by using the solar cell unit as a power source, the electric power from the distribution line can be used to supply the electric power to the heater. The curve mirror A2 shown in FIG. 4 is similar to the above-mentioned curve mirror A1 in that the heater 4 is directly provided on the mirror plate 1a of the curve mirror body 1 and the heater 4 is heated to keep the mirror plate 1a warm. Although it is configured, a distribution line 5 drawn from a utility pole or the like is used as a power source, and this power is supplied to a heater 4 via a control unit 3 with a transformer. By using the distribution line 5 as the power source as described above, the stored energy does not bottom out and the heating of the heater 4 is unavoidably stopped unlike the case where the solar cell unit is used as the power source. By supplying the electric power to the heater 4 by the part 3 only when necessary, it is possible to prevent the fogging of the end plate 1a while efficiently using the electric power. According to the gist of the present invention, a storage battery, a generator or the like can be used as the power source for heating the heater in addition to the above-mentioned solar cell unit and distribution line.

The curve mirror A3 shown in FIG. 5 uses the distribution line 5 as a power source, and the heater 4 is provided inside the heat retaining space 1e formed inside the curve mirror main body 1 like the above-mentioned curve mirrors A1 and A2. Electric power supplied from the distribution line 5 to the heater 4 is controlled by the control unit 3, but a heat storage container 8 is provided inside the heat retaining space 1e.

The heat storage container 8 is formed so as to fill the space between the partition plate 5 made of a perforated plate and the heat insulating material 6, and the gel heat storage agent 8a is housed therein. As the gel heat storage agent 8a, for example, a poval type gel or a water-absorbent polymer used by being filled in a cooling bag used as a water pillow or a cooling tool of a cooler box is used. These gel-like heat storage agents 8a have a large amount of heat storage and the characteristics that heat is released slowly and stably, so they are also suitable as a heat storage agent to be used according to the present invention, and a container for storing them. Is aluminum foil, plastic film, or a laminate of these. Therefore, the heat storage container 5 described above is provided so as to be in contact with the heat retaining space 1e through the perforations of the partition plate 5 and to face the back surface of the end plate 1a through the air layer of the heat retaining space 1e. The heat insulating material 6 provided on the back side of the heat storage container 8 is for preventing the heat energy stored in the heat storage container 8 from being unnecessarily radiated from the back surface of the same container 8.

In the curved mirror A3 configured as described above, heat energy is absorbed and stored in the gel heat storage agent 8a in the heat storage container 8 due to the temperature rise in the daytime, and this heat energy is generated from nighttime to morning temperature. Heat is gradually dissipated as the temperature decreases. The heat released from the heat storage container 8 warms the air in the heat retaining space 1e, and the warm air prevents the end plate 1a from being heated to a temperature close to or higher than the outside air temperature to prevent dew condensation on the end plate 1a surface. To be done. Further, the heat energy stored in the heat storage container 8 keeps the heat of the end plate 1a through the air layer in the heat retention space 1e, whereby the heat energy in the heat storage container 8 is directly emitted to the end plate 1a. It is prevented that the heat is released, and stable heat radiation can be maintained for a long time.

By the way, on a cold day, as described above, the heat energy stored in the heat storage container 8 also reaches the bottom. As it is, the air in the heat retaining space 1e is cooled and the heat retention of the end plate 1a is stopped, but at this time, the control unit 3 detects that the temperature of the end plate 1a has decreased by the dew condensation sensor 3a, and the heater 4 is powered. To start supplying. As a result, the air in the heat retaining space 1e is warmed by the heater 4 instead of the heat storage container 8, and the warm air keeps the end plate 1a warm.

In the curved mirror A3 configured as described above, the gel heat storage agent 8a, which has a large amount of heat storage and good heat dissipation characteristics, efficiently stores a large amount of heat energy during the day, The end plate 1a can be kept warm for a long time while releasing energy gently through the air layer of the heat retaining space 1a. Further, even when the heat storage by the heat storage container 8 has reached the bottom, the heater 4 provided in the heat retaining space 1e is heated to warm the air in the heat retaining space 1e, so that the heat of the end plate is continuously maintained and clouding occurs. It can prevent life. Therefore, the heat energy stored in the heat storage container 8 can be effectively used to suppress the consumption of electric power as much as possible, and the heat retention of the end plate 1a can be maintained even when the heat storage container 8 has bottomed out due to strong cooling. It is possible to prevent the occurrence of fogging by continuing.

Further, a solar cell unit may be used for the power source of the above-mentioned curve mirror A3 as in the case of the above-mentioned curve mirror A1. In this case, the heat energy stored in the heat storage container 8 and the electric power generated by the solar cell unit are continuously used to keep the end plate 1a warm, and when the sunshine conditions are good, such as the distribution line. It is possible to cover the energy required to keep the end plate 1a warm without receiving power from an external power source.

The curved mirrors A1, A2, A3 described above control the power supply from the solar cell unit 2 or the distribution line 5 to the heater 4 by the control unit 3, and only under the condition that dew condensation occurs. Although the power supply is controlled so as to be supplied, the power supply from the power supply to the heater 4 may be performed without the control unit 3. For example, even if the existing electric circuit that controls the end plate 1a within a certain temperature range with a thermostat is used to supply electric power periodically from night to morning in which a dew condensation is likely to occur, a sufficient amount of dew condensation will be generated. Can be prevented.

[Submission date] April 2, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0023

[Correction method] Change

[Correction content]

Although the above-mentioned curve mirror A1 heats the heater by using the solar cell unit as a power source, the electric power from the distribution line can be used to supply the electric power to the heater. The curve mirror A2 shown in FIG. 4 is similar to the above-mentioned curve mirror A1 in that the heater 4 is provided in the heat retaining space 1e provided in the curve mirror body 1 and the heater 4 is heated to heat the heat retaining space 1e. It is configured to keep the end plate 1a warm by heating the air of the above. However, a distribution line 5 drawn from a utility pole or the like is used as a power source, and this power is supplied to the heater 4 via the control unit 3 with a transformer. We are supplying. By using the distribution line 5 as the power source as described above, the stored energy does not bottom out and the heating of the heater 4 is unavoidably stopped unlike the case where the solar cell unit is used as the power source. By supplying the electric power to the heater 4 by the part 3 only when necessary, it is possible to prevent the fogging of the end plate 1a while efficiently using the electric power. According to the gist of the present invention, a storage battery, a generator, or the like can be used as the power source for heating the heater, in addition to the above-described solar cell unit and distribution line.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a curved mirror embodying the present invention.

FIG. 2 is a partially cutaway front view showing the curved mirror.

FIG. 3 is a vertical cross-sectional view showing a curved mirror configured without a partition plate.

FIG. 4 is a vertical cross-sectional view showing a curved mirror using a distribution line as a power source.

FIG. 5 is a vertical cross-sectional view showing a curved mirror provided with a heat storage container.

[Explanation of symbols]

A1, A2, A3 ... Curve mirror 1 ... Curve mirror main body 1a ... End plate 2 ... Solar cell unit 2c ... Storage battery 3 ... Control unit 3a ... Condensation sensor 4 ... Heater 5 ... Distribution line 6 ... Insulation material 8 ... Heat storage container 8a ... Heat storage agent

Claims (3)

[Scope of utility model registration request] 1. A curve mirror body is constructed by attaching a lid to the back surface of the mirror plate, and a heat retaining space is formed inside the curve mirror body on the back side of the mirror plate, and the heat retaining space is heated by power supply from a power source. Curved mirror that can be equipped with a heater. 2. A curve mirror body is constructed by attaching a lid to the back surface of the mirror plate, and a heat storage container containing a gel or liquid heat storage agent is provided inside the curve mirror body on the back side of the mirror plate via a heat retaining space. A curve mirror provided with a heater that is heated by electric power supplied from a power source in the heat retaining space. 3. A control unit is provided for controlling electric power supply from a power source to the heater, and the control unit is provided with a dew condensation sensor. 3. The curve mirror according to claim 1, further comprising control means for supplying electric power to the heater only when the condition immediately before the occurrence is detected.