| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pottery plate with a hollow hole which can be suppressed from being damaged in a cold district. <P>SOLUTION: In a pottery plate 1 which is formed with a plate thickness BT of 20 mm or less and has a hollow hole 10 bored in a horizontal direction between both side faces 6 in an installation state, the hollow hole 10 is formed with a height (h) of 12 mm or more. The hollow hole 10 bored in the horizontal direction between both the side faces 6 in the installation state of the pottery plate 1 has such a shape that water entering the hollow hole 10 can flow out easily. Therefore, even if water enters the hollow hole 10, the water flows out of an opening part of the hollow hole 10, thereby suppressing water from becoming stagnant in the hollow hole 10. Thus, even if the pottery plate 1 is exposed under a low-temperature environment, water can be suppressed from being frozen inside the hollow hole 10. <P>COPYRIGHT: (C)2013,JPO&INPIT |
