Automatic Anti-fogging instrument cluster

Abstract

An automatic anti-fogging instrument device includes: a housing, an instrument body, and a first opening / closing member. The housing has a visible portion; the instrument body is disposed inside the housing and can be seen through the visible portion; the first opening / closing member is capable of absorbing moisture and expanding, and retains its original state before expansion. The first opening / closing member is disposed in the housing and surrounds the visible portion, and in its original state, there is a gap between the first opening / closing member and the instrument body; when the humidity is high, the first opening / closing member expands due to moisture absorption and protrudes towards the instrument body to close the gap. This provides an anti-fogging effect even in high humidity conditions and ensures airflow to dissipate heat from the instrument body when the humidity is low.

Claims

1. An instrument device capable of automatically preventing fogging, comprising: An outer casing with a visible portion; An instrument body is disposed within the housing and is visible through the viewing section; And a first opening and closing member, capable of absorbing moisture and expanding and having an original state before expansion, the first opening and closing member is disposed on the housing and surrounds the visible part, the first opening and closing member is spaced apart from the instrument body in the original state; wherein, when the humidity is high, the first opening and closing member protrudes toward the instrument body to close the gap by absorbing moisture and expanding.

2. The instrument device with automatic anti-fogging capability as described in claim 1, wherein the housing includes a first housing, the first housing includes a shell plate and a transparent plate disposed on the shell plate, the shell plate has a window, and the transparent plate forms the visible portion corresponding to the window position.

3. The instrument device with automatic anti-fogging capability as described in claim 1, wherein a groove is provided on the inner surface of the housing, the instrument body has a front surface, the groove has a bottom surface facing the front surface and two sidewalls connected to the bottom surface of the groove with opposite long sides, and the first opening and closing member is disposed in the groove and exposed through the groove.

4. The instrument device for automatic anti-fogging as described in claim 1, wherein the first opening and closing member further has an expanded state relative to the original state, a first air chamber is formed between the housing and the instrument body, and the first opening and closing member closes the first air chamber in the expanded state.

5. The instrument device for automatically preventing fogging as described in claim 1, wherein the first opening and closing element is a hygroscopic expanding colloid having a network structure formed by cross-linking of water-soluble molecules.

6. The instrument device for automatically preventing fogging as described in claim 5, wherein the hygroscopic expanding colloid is a polymer containing a carboxylic acid group.

7. The instrument device with automatic anti-fogging capability as described in claim 1 further includes at least one second opening and closing member, which is capable of absorbing moisture and expanding and has an original state before expansion. The housing is provided with at least one vent hole, and the second opening and closing member is disposed on the housing corresponding to the vent hole. In the original state, the second opening and closing member maintains the vent hole for ventilation. When the humidity is high, the second opening and closing element expands by absorbing moisture to close the vent.

8. The instrument device for automatically preventing fogging as described in claim 7, wherein the second opening and closing member includes a vent sheet and a moisture-absorbing expansion film covering one side of the vent sheet, the vent sheet covering the housing at the location of the vent hole and having a plurality of pores, each of the pores of the vent sheet communicating with the vent hole, and the moisture-absorbing expansion film expanding to close the plurality of pores by absorbing moisture.

9. The instrument device for automatically preventing fogging as described in claim 8, wherein the moisture-absorbing expansion film has a network structure formed by cross-linking of water-soluble molecules.

10. The instrument device for automatically preventing fogging as described in claim 9, wherein the moisture-absorbing expansion film is a polymer with a carboxylic acid group.

11. The instrument device for automatic anti-fogging as described in claim 7, wherein the housing includes a second housing, the second housing having at least one hollow column at the location of at least one vent hole, the hollow column having a hollow channel communicating with the vent hole, and the second opening and closing member being disposed at one end of the hollow column and correspondingly covering one end of the hollow channel.

12. The instrument device for automatic anti-fogging as described in claim 11, wherein the hollow column is provided with a connecting rib in the hollow channel, and the second opening and closing member is supported by the connecting rib.

13. The instrument device for automatically preventing fogging as described in claim 1, wherein the instrument body is provided with a display unit that is visible through the viewing portion.

14. The instrument device for automatically preventing fogging as described in claim 13, wherein the display unit is a liquid crystal display.

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