Neck Cooler

Abstract

To provide a neck cooler with improved cooling function. [Solution] The neck cooler 10 comprises an outer bag 110 having a shape that can be worn around the neck of the human body, and a cooling agent 120 enclosed inside the outer bag. The cooling agent is a PCM (phase change material) containing 0.8 to 1.2 mass % of additive powder. The phase transition temperature of the PCM is 18 to 28°C. The additive powder is at least one of graphite powder, graphene powder, and metal powder. According to this neck cooler, the additive powder improves the thermal conductivity of the PCM, which in turn improves the cooling speed that removes heat from the human body, thereby enhancing the cooling effect. This improves the feeling of coolness when the neck cooler is worn.

Description

[Technical field]

[0001] This specification discloses technology relating to a neck cooler. [Background technology]

[0002] Neck coolers are known as cooling devices that are worn around the neck to cool the body in high-temperature environments. Patent Document 1 describes a neck cooler that uses a PCM (phase change material) as a cooling agent. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2004-6689 A Summary of the Invention [Problem to be solved by the invention]

[0004] There was a demand for improved cooling performance in neck coolers that use PCM. [Means for solving the problem]

[0005] A neck cooler in one embodiment disclosed in the present specification includes an outer bag having a shape that can be worn around the neck of a human body, and a cooling agent enclosed inside the outer bag. The cooling agent is a PCM (phase change material) containing 0.8 to 1.2 mass % of additive powder. The phase transition temperature of the PCM is 18 to 28°C. The additive powder is at least one of graphite powder, graphene powder, and metal powder. According to this embodiment of the neck cooler, the additive powder improves the thermal conductivity of the PCM, and as a result, the cooling speed of removing heat from the human body is improved, thereby enhancing the cooling effect. Therefore, the cooling sensation when wearing the neck cooler can be improved. [Brief description of the drawings]

[0006] [Figure 1]FIG. 2 is an explanatory diagram showing a neck cooler. [Diagram 2] FIG. 2 is a cross-sectional view showing the neck cooler taken along the F2-F2 cross section in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0007] Fig. 1 is an explanatory diagram showing a neck cooler 10. Fig. 2 is a cross-sectional view showing the neck cooler 10 taken along the F2-F2 cross section in Fig. 1. The neck cooler 10 is a cooling device that is worn around the neck of the human body to cool the body. The neck cooler 10 includes an outer bag 110 and a cooling agent 120.

[0008] The outer bag 110 of the neck cooler 10 is shaped so as to be wearable around the neck of the human body. The outer bag 110 is an annular tube having an opening 112. The outer bag 110 is made of an elastically deformable synthetic resin (for example, thermoplastic polyurethane).

[0009] The ice pack 120 of the neck cooler 10 is sealed inside the outer bag 110. The ice pack 120 is a PCM (phase change material) containing additive powder. The PCM of the ice pack 120 may be a known phase change material whose phase transition temperature is adjusted to the range of 18 to 28°C.

[0010] The additive powder of the ice pack 120 may be at least one of graphite powder, graphene powder, and metal powder (e.g., aluminum powder, copper powder, etc.) as a powder with relatively high thermal conductivity. The content of the additive powder in the ice pack 120 is preferably 0.8 to 1.2 mass % from the viewpoint of improving the thermal conductivity of the PCM. The average particle size of the additive powder in the ice pack 120 is preferably 75 to 85 μm from the viewpoint of improving the thermal conductivity of the PCM.

[0011] According to the neck cooler 10 described above, the thermal conductivity of the PCM is improved by the additive powder, which results in an improved cooling rate that removes heat from the human body, thereby enhancing the cooling effect. This improves the cooling sensation when wearing the neck cooler.

[0012] The technology disclosed in this specification is not limited to the above-mentioned embodiment, example, and modification, and can be realized in various configurations without departing from the spirit thereof. For example, among the technical features in the above-mentioned embodiment, example, and modification, those corresponding to the technical features in each form described in the summary of the invention can be appropriately replaced and combined to solve some or all of the above-mentioned problems or to achieve some or all of the above-mentioned effects. In addition, technical features that are not described as essential in this specification can be appropriately deleted. [Explanation of symbols]

[0013] 10. Neck cooler 110…Outer bag 112...Aperture 120…Ice pack

Claims

[Claim 1] A neck cooler, An outer bag having a shape that can be attached to the neck of a human body; A cooling agent enclosed inside the outer bag; Equipped with The ice pack is a PCM (phase change material) containing 0.8 to 1.2% by mass of additive powder, The phase transition temperature of the PCM is 18 to 28° C. The neck cooler, wherein the additive powder is at least one of graphite powder, graphene powder, and metal powder.

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