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Windshield

專(zhuān)利號(hào)
US12219674B2
公開(kāi)日期
2025-02-04
申請(qǐng)人
Nippon Sheet Glass Company, Limited（JP Tokyo）
發(fā)明人
Kazuki Chiba; Hisashi Ogawa; Hisashi Asaoka; Kazuhisa Ono; Yota Yano
IPC分類(lèi)
B32B7/12; B60J1/02; H05B3/86; B60R11/00; B60R11/04
技術(shù)領(lǐng)域
glass,bent,portion,heating,wire,plate,in,windshield,layer,85b2
地域： Tokyo

摘要

The present invention provides a windshield on which an information acquisition device that acquires information from outside of a vehicle by emitting and/or receiving light is disposable, the windshield including: a glass plate; and a heating wire that is provided on the glass plate and to which a current is applied. The glass plate includes at least one information acquisition region that faces the information acquisition device and through which the light passes, the heating wire includes a plurality of linear main body portions that pass through at least the information acquisition region and a linear linking portion for linking the plurality of main body portions, and at least one of the linking portions includes a heat generation suppressing means for suppressing heat generation when a current is applied.

說(shuō)明書(shū)

Also, if local heat generation is likely to occur as in the bent portion, the current value needs to be controlled by setting the temperature of the portion to the upper limit of the heating temperature (e.g., 70° C. to 80° C.). This is because the glass plate may crack when the glass plate is heated to a temperature higher than the upper limit of the heating temperature, and as a result, production yield may also decrease. However, if a current is controlled such that the portion where local heat generation occurs is heated at the upper limit of the heating temperature, the heating temperature of the other portion may decrease. As a result, there is an issue that the current value cannot be controlled such that the entire heating wire 8 sufficiently generates heat. In view of this, in this embodiment, the bent portion is configured as the aspects 1 to 5 such that local heat generation does not occur. This makes it possible to prevent local heat generation and to control the current value such that the entire heating wire 8 can sufficiently generate heat. As described in the following Examples, by adjusting the configuration of the bent portion, it is possible to set the difference between the temperature of the vertex portion of the bent portion and the average temperature of two portions that are located 35 mm away from the vertex portion of the bent portion to be less than 15° C., for example.

權(quán)利要求

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