Antitheft device for a product display case

An antitheft device for a product display case comprising a product display case (1) provided with a locking mechanism (2) and a unlocking device (3) for unlocking said locking mechanism wherein;

• said product display case (1) includes a first case component (4) and a second case component (7), both case components being openably closed by fitting in mutually with respect to an X direction to form a product holding chamber (6), and a receiving portion (18) being provided in the product display case to which a security tag (17) is attached,
• said locking mechanism (2) provides first lock means (10) of projection-unlock type and second lock means (11) of magnet-unlock type which are arranged in a lock-structure section (9) directed in a Y direction intersecting said X direction, wherein said first lock means (10) carries out its locking operation in a Y1 direction toward outside the display case, and said second lock means (11) carries out its locking operation in a Y2 direction toward inside the display case, when said both case components are closed and fitted in mutually,
• said first lock means (10) comprises a first latching member (10a) and a first receiving member (10b) that are provided between said first and second case components, wherein said first latching member (10a) may be swung or rocked in the Y direction but is usually pushed resiliently in the Y1 direction, and said first receiving member (10b) opposes against the Y1 direction to catch said first latching member (10a), and wherein said first latching member (10a) has an operation portion (12) for receiving a pushing force which may be exerted in the Y2 direction from outside the lock-structure section,
• said second lock means (11) comprises a second latching member (11a) and a second receiving member (11b) that are provided between said first and second case components, wherein said second latching member (11a) may be swung or rocked in the Y direction but is usually pushed resiliently in the Y2 direction, and said second receiving member (11b) opposes against the Y2 direction to catch said second latching member (11a), and wherein said second latching member (11a) includes a magnetic piece (34a) which may be attracted to a magnet put close to the lock-structure section from outside, and
• said unlocking device (3) comprises a table (39) and a unlock-structure section (40), wherein said table (39) may receive the product display case (1) so that the lock-structure section (9) may slide forward and backward in the Y direction thereon, and said unlock-structure section (40) provides a unlock projection (41) directed to said operation portion (12) of the first lock means (10) and a magnet (42) directed to said magnetic piece (34a) of the second latching means (11).