JP2020143848A - LED heating device - Google Patents

Abstract

To provide an LED heating device 10, 20, 30, 50 applying an LED chip 12a, 52a of low running costs as a heat generating source, and capable of achieving high heating effect.SOLUTION: When a strip-like heating element 12 is energized, an LED chip 12a emits light, and air in a case 11 is heated by heat generation in accompany with the light emission. The heated air is discharged to the outside of the case 11 from an air discharge port 11b, and air from an air inlet port 11a flows into the case 11. As the heating element 12 has a slit shape, it can be housed in the case 11 while being bent and curved, folded and wound in multiple layers. As a number of LED chips 12a can be incorporated in the case 11, and flow of the heated air in the case 11 is complicated, high heating effect can be achieved.SELECTED DRAWING: Figure 1

Description

The present invention relates to an LED heating device that uses an LED chip that generates heat as it emits light as a heat generating source.

As a type of LED heating device of this type, Practical New Design Registration No. 3174165 discloses that the front surface of a substrate on which a plurality of LED chips are arranged is covered with a translucent front cover, and the back surface of the substrate is covered with a back cover. Disclosed is an LED heating device in which a heat insulating material is provided between a substrate and a back cover, and a panel-shaped heating element in which the substrate, the front cover, and the back cover are connected by a side frame is built in a case.
Since this LED heating device uses an LED chip with low power consumption as a heat generating source, the running cost can be kept low.

Utility Model Registration No. 3174165

Since the panel-shaped heating element, which is the heat generating source of the conventional LED heating device described above, is bulky, a large number of LED chips cannot be built in the case, and the back surface of the substrate is provided with a heat insulating material. Since the LED chip does not dissipate heat on the back side of the case, it is difficult for the air inside the case to warm up and it is difficult to obtain the desired heating effect.

In view of the above problems, an object of the present invention is to provide an LED heating device capable of obtaining a high heating effect by using an LED chip having a low running cost as a heat generating source.

The LED heating device according to claim 1 has a strip-shaped or vine-shaped case in which a plurality of LED chips are arranged on a substrate and coated with a coating layer made of soft resin or synthetic rubber in a case in which an air inlet and an air outlet are formed. Alternatively, a sheet-shaped heating element is built in, and the air that has flowed into the case from the air intake is warmed by the heat generated by the light emission of the LED chip, and the warmed air flows out from the air outlet to the outside of the case. And.

In the invention according to claim 2, in the LED heating device according to claim 1, the circuit element included in the lighting circuit of the LED chip is covered with the coating layer together with the LED chip, and the heat generated by the circuit element is used for heating. It is characterized by doing.

The invention according to claim 3 is the LED heating device according to claim 1, wherein the band-shaped or vine-shaped heating element is folded in a zigzag manner and stored in a case.

The invention according to claim 4 is characterized in that, in the LED heating device according to claim 1, the sheet-shaped heating element is wound and stored in a case.

The invention according to claim 5 is characterized in that, in the LED heating device according to claim 1, a plurality of irregularities are formed on the surface of the coating layer of the heating element.

The invention according to claim 6 is characterized in that, in the LED heating device according to claim 1, a metal radiator that comes into contact with the surface of the coating layer of the heating element is provided.

The invention according to claim 7 is characterized in that, in the LED heating device according to claim 1, a translucent resin is used as the soft resin.

The invention according to claim 8 is characterized in that, in the LED heating device according to claim 1, the LED chip is coated with the coating layer so that the heating element has waterproof property.

The invention according to claim 9 is characterized in that, in the LED heating device according to claim 1, the case is made of a wood material or a resin material.

The invention according to claim 10 is characterized in that, in the LED heating device according to claim 1, a filter for catching dust in the air is provided at the air intake.

The invention according to claim 11 is the LED heating device according to claim 1, wherein a fan for sucking air is built in the case.

According to the invention of claim 1, since the heating element has a band-shaped, vine-shaped, or sheet-shaped form, it can be stored in a case by being repeatedly bent, twisted, bent, and rolled. .. Therefore, many LED chips can be built in the case, and a high heating effect can be obtained.
Since the heating element can be stored in the case in various forms, there is a high degree of freedom in designing the case design. Therefore, cases with various designs can be manufactured.

According to the invention of claim 2, since the heat generated by the circuit element is used for heating in addition to the heat generated by the LED chip, a higher heating effect can be obtained.

According to the invention of claim 3, since the band-shaped or vine-shaped heating element is stored in the case by winding it in multiple layers or twisting it in multiple layers, more LED chips can be built in the case. In addition, the flow of warmed air in the case becomes complicated, and the heating effect can be further enhanced.

According to the invention of claim 4, since the sheet-shaped heating element is wound and stored in the case, more LED chips can be built in the case, and the heating effect can be further enhanced.

According to the invention of claim 5, since a plurality of irregularities are formed on the surface of the coating layer of the heating element, the surface area of the heating element is increased, and the heat dissipation effect of the heating element and the heating effect can be enhanced.

According to the invention of claim 6, since the metal radiator is provided in contact with the surface of the coating layer of the heating element, the heat of the LED chip is transferred to the metal radiator, and the metal radiator having a high heat dissipation effect is used. Heat is dissipated and the heating effect can be enhanced.

According to the invention of claim 7, it is easy to use because it is possible to visually recognize that the LED heating device is operating by the light of the LED chip leaking out of the case from the air inlet, the air outlet, the gap, etc. of the case. ..

According to the invention of claim 8, since the LED chip is coated with a coating layer to impart waterproofness to the heating element, it can be used in a washroom, a shower room, a bathroom, etc. where moisture easily adheres to the heating element. It will be possible.

According to the invention of claim 9, since the heating element made of the LED chip has a low calorific value, it is not necessary to use a flame-retardant material for the case material, and cases of various designs using wood material or resin can be used. Can be manufactured.

According to the invention of claim 10, since the dust in the air is captured by the filter, an air cleaning effect can be obtained in addition to the heating effect.

According to the invention of claim 11, since the air is forcibly taken into the case by the fan and the air warmed in the case is discharged to the outside of the case, the heating effect can be further enhanced.

It is a perspective view which shows the LED heating apparatus which concerns on 1st Embodiment of this invention. It is explanatory drawing which shows the band-shaped heating element used for the LED heating device which concerns on 1st Example of this invention. It is sectional drawing which cut from the 3-3 line of FIG. It is a perspective view which shows the LED heating apparatus which concerns on 2nd Embodiment of this invention. It is a perspective view which shows the LED heating apparatus which concerns on 3rd Example of this invention. It is explanatory drawing which shows the band-shaped heating element used for the LED heating apparatus value which concerns on 4th Embodiment of this invention. It is explanatory drawing which shows the band-shaped heating element used for the LED heating apparatus which concerns on 5th Embodiment of this invention. It is a perspective view which shows the LED heating apparatus which concerns on 6th Embodiment of this invention. It is explanatory drawing which shows the sheet-shaped heating element used for the LED heating apparatus which concerns on 6th Embodiment of this invention.

The present invention will be described below with reference to the drawings. FIG. 1 shows the LED heating device 10 according to the first embodiment of the present invention. The LED heating device 10 includes a case 11 made of a wood material. An air intake port 11a is formed in the lower part of the side surface of the case 11, and the upper end surface of the case 11 is opened as an air discharge port 11b. In the case 11, a strip-shaped heating element 12 is stored in a zigzag fold that is twisted or twisted many times.

As shown enlarged in FIGS. 2 and 3, the strip-shaped heating element 12 includes a flexible printed wiring board 12b on which a plurality of LED chips 12a are mounted. The plurality of LED chips 12a are arranged along the longitudinal direction of the flexible printed wiring board 12b to form a row of LED chips 12a. A power supply circuit 12c that converts household AC power to direct current, supplies required power to each LED chip 12a, and controls lighting of the LED chip 12a is connected to a flexible printed wiring board 12b via a power cord 12d. There is.

Both the front and back surfaces of the flexible printed wiring board 12b are covered with a coating layer 12e made of a thermoplastic transparent soft polyvinyl chloride resin including the LED chip 12a mounted on the substrate 12b. In the coating layer 12e, the connection portion between the power cord 12d and the flexible printed wiring board 12b, that is, the electric wire 12f exposed from the vinyl insulator at the tip of the power cord 12d is soldered to the printed wiring 12g of the flexible printed wiring board 12b. The portion 12h that is covered is also covered. The power cord 12d is originally waterproof, and the row of the flexible printed wiring board 12b and the LED chip 12a is covered with the coating layer 12e including the connection portion between the substrate 12b and the power cord 12d. The band-shaped heating element 12 is waterproof.

The configuration of the LED heating device 10 according to the first embodiment is as described above. When the band-shaped heating element 12 is energized, the LED chip 12a emits light, and the heat generated by the light emission warms the air in the case 11. The warmed air is discharged from the air discharge port 11b to the outside of the case 11, and the air flows into the case 11 from the air intake port 11a.

According to the LED heating device 10 according to the first embodiment, since the heating element 12 has a band-like shape, it can be stored in the case 11 by being bent, bent, and rolled many times. Therefore, many LED chips 12a can be built in the case 11, and the flow of warmed air in the case 11 becomes complicated, so that a high heating effect can be obtained.

Since the heating element 12 can be stored in the case 11 in various forms, there is a high degree of freedom in designing the design of the case 11. Therefore, cases 11 having various designs can be manufactured. In particular, since the heating element 12 made of the LED chip 12a has a low calorific value, it is not necessary to use a flame-retardant material as the material of the case 11, and the case 11 having various designs can be manufactured by using a wood material or a resin.

The fact that the LED heating device 10 is operating can be visually recognized by the light of the LED chip 12a leaking out of the case 11 from the air inlet 11a and the air outlet 11b of the case 11, which is convenient.

Since the LED chip 12a is coated with the coating layer 12e to impart waterproofness to the heating element 12, it can be used in a washroom, a shower room, a bathroom, etc. where moisture easily adheres to the heating element 12.

The LED heating device 20 according to the second embodiment of the present invention is shown in FIG. The LED heating device 20 includes a case 21 made of a plastic molded product, and a filter 21b is attached to an air intake 21a provided at the lower side surface of the case 21. Further, a fan 21d is internally provided directly below the air discharge port 21c of the case 21, and a louver 21e is attached to the air discharge port 21c. The band-shaped heating element 12 is stored in the case 21 in a zigzag manner.

The configuration of the LED heating device 20 according to the second embodiment is as described above, and since the dust in the air can be captured by the filter 21b, an air cleaning effect can be obtained in addition to the heating effect. Further, since the fan 21d forcibly takes in the air into the case 21 and discharges the air warmed in the case 21 to the outside of the case 21, the heating effect can be further enhanced.

The LED heating device according to the third embodiment of the present invention is shown in FIG. The LED heating device 30 includes a case 31 made of earthenware, an air intake 31a is provided in the lower part of the side surface of the case 31, and the upper end surface of the case 31 is opened as an air discharge port 31b. A band-shaped heating element 12 is spirally wound and stored in the case 31.

FIG. 6 shows a band-shaped heating element 40 built in the case of the LED heating device according to the fourth embodiment of the present invention. A large number of ridges 40b are formed along the longitudinal direction on the surface of the coating layer 40a of the heating element 40.
Since the other configurations are the same as those of the band-shaped heating element 12 described above, the same components are designated by the same reference numerals and the description thereof will be omitted.

According to the LED heating device according to the present embodiment, since a plurality of ridges 40b are formed on the surface of the coating layer 40a of the band-shaped heating element 40, the surface area of the heating element 40 becomes large, and the heat dissipation effect of the heating element 40 becomes large. As a result, the heating effect can be enhanced.

FIG. 7 shows a band-shaped heating element 41 built in the case of the LED heating device according to the fifth embodiment of the present invention. A metal radiator sheet 41a is adhered to the surface of the coating layer 12e of the heating element 41. The heat radiating body sheet 41a extends in the longitudinal direction of the coating layer 12e.
Since the other configurations are the same as those of the band-shaped heating element 12 described above, the same components are designated by the same reference numerals and the description thereof will be omitted.

According to the LED heating device according to the present embodiment, since the heat radiating body sheet 41a is adhered to the surface of the coating layer 12e of the heating element 41, the heat of the LED chip 12a is transferred to the metal heat radiating body sheet 41a, and the heat radiating action is performed. Heat is dissipated from the high metal radiator sheet 41a, and the heating effect can be enhanced.

In the LED heating devices 10, 20 and 30 according to the first to fifth embodiments described above, the heating elements 12, 40 and 41 are formed into a flat strip shape, but the heating elements 12, 40 and 41 can also be formed into a vine shape having a cross-sectional shape close to a circle. ..

The LED heating device 50 according to the sixth embodiment of the present invention is shown in FIG. The LED heating device 50 includes a case 51 made of earthenware, an air intake port 51a is provided in the lower part of the side surface of the case 51, and the upper end surface of the case 51 is opened as an air discharge port 51b. A sheet-shaped heating element 52 is wound and stored in the case 51.

FIG. 9 partially shows the details of the sheet-shaped heating element 52. The sheet-shaped heating element 52 includes a flexible printed wiring board 52b on which a plurality of LED chips 52a are mounted.
The plurality of LED chips 52a are arranged vertically and horizontally on the flexible printed wiring substrate 52b to form a planar light emitting surface. Further, a chip resistor 52k is provided in the lighting circuit of the LED chip 52a in order to prevent the LED chip 52a from being damaged by an overcurrent. A power supply circuit 52c that converts household AC power to direct current, supplies required power to each LED chip 52a, and controls lighting of the LED chip 52a is connected to a flexible printed wiring board 52b via a power cord 52d. There is.

Both the front and back surfaces of the flexible printed wiring board 52b are covered with a coating layer 52e made of a thermoplastic transparent soft polyvinyl chloride resin including the LED chip 52a and the chip resistor 52k mounted on the substrate 52b. In the coating layer 52e, the connection portion between the power cord 52d and the flexible printed wiring board 52b, that is, the electric wire 52f exposed from the vinyl insulator at the tip of the power cord 52d is soldered to the printed wiring 52g of the flexible printed wiring board 52b. Since the portion 52h is also covered, the sheet-shaped heating element 52 is waterproof.

The structure of the LED heating device 50 according to the sixth embodiment is as described above, and since the sheet-shaped heating element 52 is wound and stored in the case 51, more LED chips 52a can be built in the case 51. A high heating effect can be obtained.
In this embodiment, the chip resistor 52k is covered with the coating layer 52e together with the LED chip 52a, but other circuit elements such as integrated circuits and transistors constituting the lighting circuit of the LED chip 52a are also covered with the coating layer 52e. Then, those heat generations can be used for heating.
Further, although the LED chips 52a are regularly arranged vertically and horizontally, it is also possible to arrange them irregularly to form a planar light emitting surface.

10 ... LED heating device 11 ... Case 11a ... Air intake 11b ... Air outlet 12 ... Band-shaped heating element 12a ... LED chip 12b ... Flexible printed wiring board 12e ... Coating layer 20 ... LED heating device 21 ... Case 21a ... Air intake Inlet 21b ... Filter 21c ... Air outlet 21d ... Fan 30 ... LED heating device 31 ... Case 31a ... Air intake 31b ... Air outlet 40 ... Band-shaped heating element 40a ... Coating layer 40b ... Convex 41 ... Band-shaped heating element 41a ... Metal heating element sheet 50 ... LED heating device 51 ... Case 51a ... Air intake 51b ... Air outlet 52 ... Sheet-shaped heating element 52a ... LED chip 52b ... Flexible printed wiring board 52e ... Coating layer 52k ... Chip Resistor

Claims (11)

A band-shaped, vine-shaped, or sheet-shaped heating element in which a plurality of LED chips are arranged on a substrate and coated with a coating layer made of soft resin or synthetic rubber is built in a case having an air inlet and an air outlet. An LED heating device characterized in that the air flowing into the case from the air intake is warmed by the heat generated by the light emission of the LED chip, and the warmed air flows out from the air outlet to the outside of the case. The LED heating device according to claim 1, wherein the circuit element included in the lighting circuit of the LED chip is covered with the coating layer together with the LED chip, and the heat generated by the circuit element is used for heating. The LED heating device according to claim 1, wherein the band-shaped or vine-shaped heating element is folded in a zigzag manner and stored in a case. The LED heating device according to claim 1, wherein the sheet-shaped heating element is wound and stored in a case. The LED heating device according to claim 1, wherein a plurality of irregularities are formed on the surface of the coating layer of the heating element. The LED heating device according to claim 1, wherein a metal radiator that comes into contact with the surface of the coating layer of the heating element is provided. The LED heating device according to claim 1, wherein a translucent resin is used as the soft resin. The LED heating device according to claim 1, wherein the LED chip is coated with the coating layer so that the heating element has waterproof property. The LED heating device according to claim 1, wherein the case is made of a wood material or a resin material. The LED heating device according to claim 1, wherein a filter for catching dust in the air is provided at the air intake. The LED heating device according to claim 1, wherein a fan for sucking air is built in the case.

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