JP2596730Y2 - Anti-fog heater for silhouette formation with self-temperature control function - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-fog heater used for a mirror for a unit bath or a vanity mirror for preventing fogging due to dew condensation on the mirror.

[0002]

2. Description of the Related Art In unit bath mirrors and vanity mirrors, since the mirror surface becomes cloudy due to dew condensation, a heater is partially arranged on the back surface of the mirror body to prevent clouding of a necessary portion. Have been done. Conventional heaters of this type include a plate-like film heater 5 as shown in FIG.
0 or a linear cord heater 60 as shown in FIG.
By attaching such a heater to the back surface of the mirror 1, a portion corresponding to the heater shape of the mirror 1 is heated, and a fogged non-fog prevention portion 2 ′ on the mirror surface is used.
The anti-fogging part 2 without fogging is formed.

The film heater 50 shown in FIG. 5 uses a so-called planar heating element 50a in which conductive particles and the like are dispersed and mixed in a synthetic resin or the like, and a lead wire 50b is connected to an electrode provided on the planar heating element. It is configured. The cord heater 60 shown in FIG. 6 is well known in which a cord 60a is drawn around like a single stroke, covered with aluminum foil or cardboard 60b, and provided with an adhesive layer 60c on the surface on the mounting side.

[0004]

However, in the case of the conventional heater as described above, the shape is limited to a square or a rectangle, and the area in which the user's face is reflected is prevented from being fogged in the usual form of a square or a rectangle. However, the aesthetic expression of the design is not taken into account, and the user's aesthetic sense and feeling of use cannot be satisfied. Further, in the film heater 50 of FIG.
Since a current flows from one end of a to the other end, it takes a long time to heat a complicated shape in consideration of an aesthetic sense, and there is a problem such as a decrease in responsiveness. For example, a large number of electrodes and lead wires are required, resulting in problems such as a complicated structure and high cost. In the cord heater 60 of FIG. 6, since the cord is continuously drawn, it is difficult to form the cord into a complicated shape.

The present invention has been made in order to solve the above-mentioned conventional problems, and an object of the present invention is to provide a heated anti-fog portion of a mirror with a variety of flowers, persons, animals or vessels. The silhouette pattern satisfies the user's aesthetic sensation and can give the user a fresh feeling of use, and the complex-shaped silhouette can be easily formed without impairing the responsiveness. An object of the present invention is to provide an anti-fog heater which can be used.

[0006]

According to this invention, a conductive substance such as fine carbon particles is dispersed and mixed in a matrix such as an inorganic resin, so that the electric resistance increases with increasing temperature. A sheet-shaped heating element having a function, a pair of plate-shaped electrodes attached to the back surface of the sheet-shaped heating element, and an insulator that covers and seals the sheet-shaped heating element and the plate-shaped electrode. A mirror is heated from the back side by the sheet-like heating element, and an anti-fog heater that forms an anti-fogging section without fogging on the mirror surface is used. The anti-fog silhouette that satisfies the aesthetic sensation is formed, and the pair of plate-shaped electrodes are arranged so that the protruding pieces are alternately positioned at intervals, and the opposing opposite poles are formed. A projecting piece divides the sheet heating element into a plurality of portions. And, and the current in each portion of this division is that configured to flow simultaneously.

[0007]

When a current is applied between a pair of plate-like electrodes, the sheet-like heating element generates heat due to its electric resistance, and a portion of the mirror corresponding to the shape of the sheet-like heating element is heated. Is formed on the mirror. A beautiful mirror part without cloudiness appears as a silhouette of flowers, people, animals, vessels, etc. in the center of the cloudy mirror, etc., so that the user's aesthetic sense is satisfied and the user is given a fresh feeling of use Can be. The sheet-like heating element is divided into a plurality of parts by the projecting pieces of the pair of plate-like electrodes, and the divided parts are simultaneously conducted, so that the whole is quickly and uniformly heated, and an anti-fog silhouette is formed with good responsiveness. You. Furthermore, even if there is a thin part in the silhouette, it is possible to pass current partially to this part, so there is no overheating or difficult production in the thin part like conventional film heaters and cord heaters, and complex designs are possible Becomes Further, it is possible to form two or more differently shaped anti-fog silhouettes by separately arranging two or more sheet-shaped heating elements on a pair of plate-shaped electrodes. Further, even when the switch is kept turned on, the heat generation amount is suppressed by the self-temperature control function.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the illustrated embodiments. FIG. 1 shows an example in which a non-fog-free part 2 having a heart shape is formed on a surface of a mirror 1 such as a vanity table, on the surface of a mirror 1, which is fogged by condensation. The antifogging heater 3 according to the present invention is attached to the back surface. The anti-fog heater 3 includes a sheet-like heating element 4, a pair of plate-like electrodes 5 and 6, a pair of lead wires 7 and 8, and an insulator 9.
It is composed of

The sheet-like heating element 4 is obtained by dispersing and mixing carbon fine pieces 4a in an inorganic resin 4b, molding the same into a predetermined shape, and when heated to a high temperature, causes thermal expansion of the matrix inorganic resin 4b. This is a member having a so-called self-temperature adjustment function in which the distance between the pieces 4a is increased, the electric resistance is increased, the current does not easily flow, and the amount of generated heat is automatically adjusted.

The pair of plate-like electrodes 5 and 6 are, for example, comb-shaped electrodes, and the back surface of the sheet-like heating element 4 (the side opposite to the mirror).
And base pieces 5a and 6a as main electrodes, and projecting pieces 5 as branch electrodes integrally projecting from the base piece at right angles.
b, 6b, and the sheet-like heating element 4 is mounted on the protruding pieces 5b, 6b. The pair of plate electrodes 5, 6
Are arranged in combination such that the protruding pieces 5b, 6b are alternately and parallelly arranged at intervals. Also, the base pieces 5a,
Lead wires 7 and 8 are connected to 6a, respectively, and protruding pieces 5b and 6b having different polarities face each other. These lead wires 7, 8 are connected to an AC or DC power supply.

The sheet heating element 4 is formed in a heart shape, and is disposed on the projecting pieces 5b, 6b of the pair of electrodes 5, 6 so as not to contact the base pieces 5a, 6a. Then, the tips of the projecting pieces 5b, 6b project sufficiently from the edge of the sheet-like heating element 4, and the projecting pieces 5a or 6b are also located at the upper end edge and the lower end edge of the sheet-like heating element 4, thereby forming a heart-shaped. Each part of the sheet-like heating element 4 is divided by opposing protruding pieces 5b, 6b of opposite polarities, and the divided parts are sandwiched by opposing protruding pieces 5b, 6b of opposite polarities, and are simultaneously held by these parts. Make the current flow. The insulator 9
The sheet-like heating element 4 and the pair of plate-like electrodes 5 and 6 are members that are sealed while being integrated in a contact state.

In the above configuration, the above-described anti-fog heater 3 is attached to the center of the back surface of the mirror 1 with an adhesive or a double-sided adhesive tape with the sheet-like heating element 4 facing the back surface of the mirror. When the sheet-shaped heating element 4 is energized through the plate-shaped electrodes 5 and 6 to heat the sheet-shaped heating element 4, the heat from the sheet-shaped heating element 4 is transmitted to the surface of the mirror 1 and the sheet-shaped heating on the mirror surface is performed. The temperature of the heart-shaped portion corresponding to the body 4 rises, and dew condensation on this portion disappears, and the cloud-free heart-shaped anti-fog portion 2 is formed. Since a beautiful mirror-shaped portion without clouding appears in the center of the clouded mirror, the aesthetic sense of the user can be satisfied and the user can be given a fresh feeling of use.

Since the portions sandwiched between the projecting pieces 5b and 6b of the sheet-like heating element 4 conduct simultaneously, the whole is quickly and uniformly heated, and the response is extremely good. The anti-fogging part 2 can be formed immediately after the switch is turned on, and the anti-fogging part 2 is formed immediately, such as in a hurry such as in the morning, which is convenient. Furthermore, even if there is a thin part in the silhouette, it is possible to pass current partially to this part, so there is no overheating or difficult production in the thin part like conventional film heaters and cord heaters, and complex designs are possible Becomes Further, the case where one anti-fog portion 2 is formed on the mirror 1 has been described above, but two or more sheet-like heating elements 4 are connected to a pair of plate-like electrodes 5.
It is also possible to form two or more differently shaped anti-fogging sections separately on 6. Further, even if the switch is kept on, the electric resistance automatically increases and the current becomes difficult to flow, and the amount of generated heat is suppressed. Other temperature control devices are not required.

It is needless to say that the shape of the sheet-shaped heating element 4 is not limited to a heart shape, but may be any other shape such as a flower, a person, an animal or a vessel. FIG. 3 shows an example of a profile of a person's profile, and FIG. 4 shows an example of a wine glass. Also in this case, the sheet-like heating element 4
The other structure is the same as that of the heart shape except for the shape of the heart shape.

[0015]

[Effects of the Invention] As described above, this invention uses a sheet-shaped heating element, a pair of plate-shaped electrodes, and an anti-fog heater composed of an insulator, and converts the sheet-shaped heating element to a flower, a person, an animal, a vessel, or the like. The antifogging silhouette is formed in a shape, and a pair of plate-like electrodes are arranged so that the protruding pieces are alternately positioned at intervals. Since the heating element was divided into a plurality of parts and the current flowed through each of the divided parts at the same time,
The following effects are obtained.

(1) A beautiful anti-fog silhouette without fogging can be formed at the center of a fogged mirror, etc., so that the aesthetic feeling of the user can be satisfied and the user has a fresh feeling of use. Can be given. (2) Since the sheet-shaped heating element is divided into respective parts by the projecting pieces of the pair of plate-shaped electrodes and each part is heated at the same time, the whole is quickly and uniformly heated, and the responsiveness is extremely good. As a result, a complicated anti-fog silhouette can be quickly and reliably expressed. (3) Even if there is a thin part in the anti-fog silhouette, a complicated design is possible because current can be partially passed through this part. (4) Two or more different shapes of anti-fog silhouettes can be formed. (5) Even if the switch is kept turned on, the electric resistance automatically increases and the current becomes difficult to flow, the amount of generated heat is suppressed, the safety is extremely high, and no temperature control device is required.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example in which the anti-fog heater according to the present invention is applied to a mirror.

FIG. 2 is a front view showing the anti-fog heater of FIG.

FIG. 3 is a schematic front view showing a modified example in which the shape of the sheet-like heating element in FIG. 1 is changed.

FIG. 4 is a schematic front view showing another modification in which the shape of the sheet-like heating element in FIG. 1 is changed.

FIG. 5 is a schematic front view showing an example in which a conventional film heater is applied to a mirror.

6A is a schematic front view showing an example in which a conventional cord heater is applied to a mirror, and FIG. 6B is a schematic sectional view of the cord heater.

[Explanation of symbols]

 Reference Signs List 1 mirror 2 anti-fog section 3 anti-fog heater 4 sheet heating element 4a carbon fine piece 4b inorganic resin 5,6 plate electrode 5a, 6a base piece 5b, 6b projecting piece 7,8 lead wire 9 insulator

Claims (1)

(57) [Scope of request for utility model registration] 1. A sheet-like heating element having a self-temperature control function in which a conductive substance is dispersed and mixed in a mother phase to increase electric resistance with respect to a temperature rise, and a sheet-like heating element on a back surface thereof. It has a pair of plate-like electrodes to be attached, and an insulator that covers and seals these sheet-like heating elements and the plate-like electrodes. An anti-fog heater that forms an anti-fog portion without, wherein the sheet-like heating element is formed in a shape that provides an anti-fog silhouette that can satisfy the aesthetic sense of the user, and the pair of plate-shaped electrodes is The projecting pieces are arranged so as to be alternately arranged at intervals, and the projecting pieces of the opposite opposite poles divide the sheet-like heating element into a plurality of portions, and a current flows simultaneously in each of the divided portions. Self-temperature characterized by Regulatory functions with silhouette form for anti-fog heaters.