Mail indicators for mailboxes - retrofittable or integrated into the mailbox with customizable display motif and display area, as well as deactivation of the display.
A mechanical mailbox indicator addresses the issue of frequent manual checks by visually signaling new mail with customizable motifs, reducing unnecessary openings and providing a reliable, battery-free solution.
Patent Information
- Application Number
- DE202025003033
- Authority / Receiving Office
- DE · DE
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2025-10-10
- Publication Date
- 2025-12-11
- Estimated Expiration
- 2035-10-31
AI Technical Summary
Conventional mailboxes require manual opening to check for new mail deliveries, leading to unnecessary frequency of opening without actual mail, and existing solutions like display windows or electronic systems have drawbacks such as clouding or battery issues.
A mechanical mailbox indicator that unfolds when the lid is opened for delivery, providing an external visual indication of new mail, customizable with a motif, and can be deactivated during absence, integrated or retrofitted into the mailbox lid.
Reduces unnecessary opening of mailboxes by visually indicating new mail externally, customizable, and offers a reliable, battery-free solution with deactivation option.
Smart Images

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Abstract
Description
[0001] The invention relates to a mechanical indicator for mailboxes (4) which informs the owner that new postal products have been deposited.
[0002] The basic idea is that it is possible to see from the outside of the mailbox whether new postal products have been delivered, without having to open it.
[0003] This function is not available with conventional mailboxes (4). Currently, to check for new mail deliveries, it is necessary to open the mailbox (4) every time. With the increasing digital delivery of information, mailboxes are opened more and more frequently without finding any new mail. The mail indicator is designed to reduce this.
[0004] Alternatives include display windows (often becoming cloudy over time) integrated into the mailbox (4) or electronic solutions that send the redelivery information to the smartphone (batteries run out, prone to malfunction, only usable with a mobile phone).
[0005] The claim of the described invention relates to a simple analog display solution that can be retrofitted or integrated directly into the letterbox lid / flap (2) during manufacturing.
[0006] Information about whether there is a new mail slot is provided by an externally visible, unfolded indicator (1.1) of the mail indicator, which is connected to the mailbox lid / flap (2). This indicator unfolds due to gravity or a spring-like force when the mail carrier opens the mailbox lid / flap (2) to deliver mail. Furthermore, the indicator (1.1) can be deactivated by an integrated locking mechanism during extended absences.
[0007] Additionally, any motif (3) can be applied to the display area (1.1) to personalize the mailbox (4). The size of the display area (1.1) can be adjusted to the owner's wishes.
[0008] After the inserted mail item has been removed, the mailbox lid / flap (2) is opened and the indicator (1.1) is manually pushed inwards into the mailbox (4). The mailbox lid / flap (2) is then closed again. The indicator (1.1) is now no longer visible and remains in this position until another mail item is inserted. Reference symbol list 1.1 Display of the letter advertiser 1.2 Base plate of the letter indicator 2 Mailbox lids / flaps 3 Motif 4 mailboxes Z Mailbox with lid closure Y mailbox with flap closure The message (1.1) is not visible (mailbox emptied) b Delivery of a new postal product by the postman via flap / lid opening (2) c Display (1.1) is automatically expanded (owner sees the new mail slot) d Removal of the new postal product and activation of the display (1.1) by pressing into the letter slot followed by closing via cover (2) or flap (2) to the initial image (a) The display can be deactivated by pressing down with your finger(s) on the form element between the display (1.1) and the base plate (1.2) of the letter indicator. The display (1.1) snaps into the form element of the base carrier (1.2) and is locked in place. To reactivate the display, press the display (1.1) from below out of the base carrier (1.2) with a stronger force than the clamping force, e.g. with a finger. g Permanent reduction of the display area (1.1) at any point (dotted line) by mechanical separation of the display material. Drawings: Fig. 1: “Presentation of the positioning of the letter-reading ad” Fig. 2 “Representation of the usage process for mailboxes with lid (Z) or flap (Y)” Fig. 3: “Display of the display locking mechanism and display area adjustment”
Claims
[1] The letter indicator for mailboxes is characterized by , that a display (1.1) is attached in the letterbox lid / flap (2) which indicates, by a change in position, whether a new postal product has been delivered to the letterbox. [2] The letter indicator for mailboxes according to claim 1, will characterized by that this can be retrofitted into the mailbox lid / flap (2) or was already installed during the mailbox manufacturing process. It is glued, magnetically or mechanically secured to the mailbox lid / flap (2) via a base plate (1.2). [3] The letter indicator for mailboxes according to claim 1, will characterized by that this is integrated into the mailbox lid / flap (2). It is permanently attached to the mailbox lid / flap (2) during the manufacturing process using a clamp or bridge. [4] The letter indicator for letterboxes according to claims 1 and 2, the indicator (1.1) of which is folded out by gravity or an additional spring-like force when the letterbox lid / flap (2) is opened and indicates to the outside the state of refilling by a postal product. [5] The letter indicator for mailboxes according to claims 1, 2, 3 and 4, which blocks the display function by means of a positive locking connection. For this purpose, the indicator (1.1) is pressed into the base plate (1.2). The form elements that snap into place thereby hold the indicator in the base plate so that it can no longer unfold. By applying an opposing force to the indicator (1.1), the holding force between the indicator (1.1) and the base plate (1.2) is overcome and the display function is released again. [6] The letter indicator for mailboxes according to claims 1, 2, 3, 4 and 5, the display of which (1.1) can be individualized by applying an individual motif (3) by gluing or printing. [7] The letter indicator for mailboxes according to claims 1, 2, 3, 4, 5 and 6, the display of which (1.1) can be changed in size by mechanically removing parts of the display area. This makes it possible to achieve a variable display size.