PROBLEM TO BE SOLVED: To provide a top plate structure which is made by a simple processing and by an inexpensive cost, can support stably an electronic instrument, prevents the electronic instrument on a top plate from falling down without increasing a space, and makes it easy for workers to use.SOLUTION: The top plate structure 1 is the top plate structure 1 for the articles of furniture having a top plate 10 on which the electronic instrument is placed, and is characterized by including: a cutout part 2 formed on the outer edge of the top plate 10 and communicating upper part and lower part and a holding member 3 having a fitting part 31 fitted to the cutout part 2, and a falling down preventing member holding part 32 on which a falling down preventing member 132 supported by the fitting part 31 and arranged above the top plate 10 is fitted.COPYRIGHT: (C)2013,JPO&INPIT【課題】簡易な加工であって、コストを安く、電子機器を安定的に支持することができるとともに、スペースが増大してしまうことなく天板上の電子機器の落下を防止して執務者の使い勝手を良好とする天板構造を提供する。【解決手段】天板構造1は、電子機器が載置される天板10を有する什器の天板構造1であって、天板10の外縁に形成されて上下に連通する切欠き部2と、切欠き部2に嵌合された取付部31、及び取付部31に支持されて天板10の上方に配された落下防止部材132が取り付けられた落下防止部材保持部32を有する保持部材3とを備えることを特徴とする。【選択図】図2