Electronic price tag

Abstract

The utility model discloses an electronic price tag, which belongs to the technical field of price tags, and is designed for solving the problems that the existing electronic price tag is easy to fall apart when being collided or falling to the ground, and the like. The utility model discloses an electronic price tag which comprises a face frame. A display screen; a main board; the rear shell is provided with a rear shell limiting clamping hook; a rear shell limiting hole is formed in the rear shell; the hook is provided with a hook limiting column, and the hook limiting column is arranged in the mainboard limiting hole and the rear shell limiting hole in a penetrating mode so as to prevent the mainboard and the rear shell from moving relatively. The hook abuts against the top end of the face frame. According to the electronic price tag, the main board, the rear shell and the hook are connected into an integrated structure through the hook limiting column, the face frame is prevented from moving downwards and vertically relative to the rear shell through the rear shell limiting clamping hook, the face frame is prevented from moving upwards relative to the rear shell through the hook, and therefore the face frame, the display screen, the main board, the rear shell and the hook are stably connected. And when collision or falling to the ground occurs, the device cannot be scattered, and the use experience is good.

Description

Technical Field

[0001] The utility model relates to the technical field of price tags, in particular to electronic price tags. Background Art

[0002] In places such as shopping malls and supermarkets where goods are sold, it is usually necessary to hang the goods for display, and at the same time, set up price tags beside them to display information such as the name, price, specifications, and origin of the goods. The commonly used price tags are electronic price tags, and the display content on their display screens can be changed according to the goods, which is more convenient to use, energy-saving and environmentally friendly.

[0003] The existing electronic price tags mainly include a controller, a display screen, a housing, and a hook. The controller is connected to the display screen, the controller is arranged inside the housing, and the hook is connected to the housing. When in use, the hook is hung on a bracket, so that the whole electronic price tag is at a suitable viewing height; the controller controls the content displayed on the display screen to introduce the corresponding goods to customers.

[0004] The defects of the existing electronic price tags include: the overall structure is simple, and the connection structure strength between the controller, the display screen, the housing, and the hook is low. Once there is a collision or the electronic price tag accidentally falls to the ground, it is easy to fall apart, and the use experience is poor. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an electronic price tag, which solves the problem that the existing electronic price tag is easy to fall apart when there is a collision or it falls to the ground, and has a good use experience.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] An electronic price tag, comprising: a front frame, on which there are front frame limiting bumps; a display screen, snap-fitted to the front frame; a main board, snap-fitted to the front frame, the main board is connected to the display screen, and there are main board limiting holes on the main board; a rear case, on which there is an L-shaped rear case limiting hook, and the rear case limiting hook is stuck on the front frame limiting bumps to prevent the front frame from moving vertically and downward relative to the rear case; there are rear case limiting holes on the rear case; and a hook, on which there are hook limiting posts, and the hook limiting posts pass through the main board limiting holes and the rear case limiting holes to prevent the main board and the rear case from moving relative to each other; the hook abuts against the top end of the front frame to prevent the front frame from moving upward relative to the rear case.

[0008] In one of the preferred embodiments, both sides of the front frame form a U-shaped fixing groove, the front frame limiting bumps are arranged on the edge of the fixing groove, and the display screen is embedded in the fixing groove.

[0009] In one preferred embodiment, a pressing elastic piece is further provided on the edge of the fixing groove, and the pressing elastic piece abuts against the display screen and / or the main board.

[0010] In one preferred embodiment, a retaining rib is provided at the bottom end of the rear shell. The retaining rib forms an angle with the main body of the rear shell, and the retaining rib can prevent the display screen and the main board from moving downward relative to the rear shell.

[0011] In one preferred embodiment, a rear shell mounting buckle is provided on the rear shell, and a hook mounting buckle that cooperates with the rear shell mounting buckle is provided on the hook.

[0012] In one preferred embodiment, the hook limiting post is fixed to the rear shell by hot melting.

[0013] In one preferred embodiment, the electronic price tag further includes a soft-pack lithium battery, and the soft-pack lithium battery is connected to the main board.

[0014] In one preferred embodiment, a connecting elastic piece is provided on the main board, and the connecting elastic piece abuts against the ear of the soft-pack lithium battery; and / or, the ear includes an ear connecting section, an ear main body section and an ear folding section connected in sequence, and the combined structure of the ear connecting section, the ear main body section and the ear folding section is in a C shape.

[0015] In one preferred embodiment, the electronic price tag further includes a battery cover plate, the battery cover plate is detachably connected to the rear shell, and the soft-pack lithium battery is located in the space surrounded by the main board, the rear shell and the battery cover plate.

[0016] In one preferred embodiment, the soft-pack lithium battery is bonded to the battery cover plate; and / or, a connecting pit is provided on the battery cover plate, and a rear shell connecting protrusion is provided on the inner wall surface of the rear shell, and the rear shell connecting protrusion is snapped into the connecting pit.

[0017] The electronic price tag disclosed by the present utility model includes a bezel, a display screen, a main board, a rear shell and a hook. The main board, the rear shell and the hook are connected into an integral structure by using a hook limiting post. The L-shaped rear shell limiting hook is used to prevent the bezel from moving downward and vertically relative to the rear shell, and the hook is used to prevent the bezel from moving upward relative to the rear shell, so that the bezel, the display screen, the main board, the rear shell and the hook are stably connected, and the various components of the electronic price tag will not be scattered when colliding or falling to the ground, and the use experience is good; the various components of the electronic price tag are cleverly matched, and the disassembly and assembly efficiency is high; the overall structure is reasonable, the useless space is minimized as much as possible, the electronic price tag is thinner and more compact, and the appearance is more beautiful. Description of the Drawings

[0018] Figure 1 It is an exploded view of a front frame, a display screen and a main board provided by a specific embodiment of the present utility model;

[0019] Figure 2 It is a schematic diagram of a combined structure of a front frame and a main board provided by a specific embodiment of the present utility model;

[0020] Figure 3 It is a schematic diagram of a combined structure of a front frame, a main board and a rear shell provided by a specific embodiment of the present utility model;

[0021] Figure 4 It is a schematic diagram of a combined structure of a front frame, a display screen, a main board and a rear shell provided by a specific embodiment of the present utility model;

[0022] Figure 5 It is a schematic diagram of a combined structure of a front frame, a main board, a rear shell and a hook provided by a specific embodiment of the present utility model;

[0023] Figure 6 It is one of the schematic diagrams of the structure of an electronic price tag provided by a specific embodiment of the present utility model;

[0024] Figure 7 It is another schematic diagram of the structure of an electronic price tag provided by a specific embodiment of the present utility model;

[0025] Figure 8 It is a schematic diagram of the structure of a front frame provided by a specific embodiment of the present utility model;

[0026] Figure 9 It is one of the schematic diagrams of the structure of a rear shell provided by a specific embodiment of the present utility model;

[0027] Figure 10 It is another schematic diagram of the structure of a rear shell provided by a specific embodiment of the present utility model;

[0028] Figure 11 It is a schematic diagram of the structure of a hook provided by a specific embodiment of the present utility model;

[0029] Figure 12 It is a cross-sectional view of a combined structure of a rear shell and a hook provided by a specific embodiment of the present utility model;

[0030] Figure 13 It is a schematic diagram of the structure of a soft-pack lithium battery provided by a specific embodiment of the present utility model;

[0031] Figure 14 It is one of the schematic diagrams of the structure of a battery cover plate provided by a specific embodiment of the present utility model;

[0032] Figure 15 It is another schematic diagram of the structure of a battery cover plate provided by a specific embodiment of the present utility model;

[0033] Figure 16 It is a schematic diagram of the combined structure of a soft-pack lithium battery and a battery cover plate provided by the specific embodiment of the present utility model;

[0034] Figure 17 It is a partial cross-sectional view of the combined structure of a front frame, a display screen, a main board, a rear case, a soft-pack lithium battery and a battery cover plate provided by the specific embodiment of the present utility model.

[0035] In the figure:

[0036] 1, front frame; 2, display screen; 3, main board; 4, rear case; 5, hook; 6, soft-pack lithium battery; 7, battery cover plate; 11, front frame limit projection; 12, fixing groove; 13, pressing elastic piece; 31, main board limit hole; 32, connecting elastic piece; 41, rear case limit hook; 42, rear case limit hole; 43, anti-return rib; 44, rear case installation buckle; 45, rear case connection protrusion; 46, rear case clamping part; 51, hook limit post; 52, hook installation buckle; 53, hook main body; 54, hook folding part; 61, tab; 71, connecting pit; 72, cover plate clamping part; 73, bottom end baffle; 74, top end connection part; 611, tab connection section; 612, tab main body section; 613, tab folding section. Specific Embodiment

[0037] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0038] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0040] In the present utility model, unless otherwise clearly defined and limited, the terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0041] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0042] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0043] This embodiment discloses an electronic price tag for displaying product information in commodity selling places such as shopping malls and supermarkets. Figures 1 to 7 Shown is a schematic diagram of the assembly process of the electronic price tag. The electronic price tag includes a front frame 1, a display screen 2, a main board 3 (abbreviated as PCBA for printed circuit board assembly), a rear case 4 and a hook 5. Among them, the display screen 2 and the main board 3 are both snap-connected to the front frame 1, and the main board 3 is connected to the display screen 2 to transmit data information.

[0044] In this embodiment, the main board 3 can be a centralized or distributed controller. For example, the controller can be a single microcontroller or composed of multiple distributed microcontrollers. A control program can run in the microcontroller to control the display screen 2 to achieve its functions.

[0045] The material for preparing the front frame 1 is not limited, as long as it can protect the display screen 2 and the main board 3 from being damaged by collision. In this embodiment, the front frame 1 is a metal product, preferably forged from a sheet metal part, with strong impact resistance, high processing efficiency, low cost, strong plasticity, and more beautiful shape.

[0046] The front frame 1 is provided with a front frame limiting convex block 11, and the rear shell 4 is provided with an L-shaped rear shell limiting hook 41. After assembly, the rear shell limiting hook 41 is stuck on the front frame limiting convex block 11. The L-shaped rear shell limiting hook 41 includes a first side connected to the rear shell 4 and perpendicular to the rear shell 4, and the first side abuts against the side surface of the front frame limiting convex block 11, which can prevent the front frame 1 from moving downward relative to the rear shell 4; the L-shaped rear shell limiting hook 41 further includes a second side connected to the first side and parallel to the rear shell 4, and the second side abuts against the top surface of the front frame limiting convex block 11, which can prevent the front frame 1 from moving vertically relative to the rear shell 4. Herein, the "down" of the rear shell 4 refers to the bottom edge position when the electronic price tag is normally hung for use.

[0047] The hook 5 is provided with a hook limiting post 51, the main board 3 is provided with a main board limiting hole 31, and the rear shell 4 is provided with a rear shell limiting hole 42. After assembly, the hook limiting post 51 passes through the main board limiting hole 31 and the rear shell limiting hole 42, and the main board 3, the rear shell 4, and the hook 5 are connected into an integral structure, which can prevent the main board 3 and the rear shell 4 from moving relatively.

[0048] After assembly, the hook 5 abuts against the top end of the front frame 1. The main board 3, the rear shell 4, and the hook 5 form an integral structure, so the hook 5 can prevent the front frame 1 from moving upward relative to the rear shell 4. Herein, the "up" of the rear shell 4 refers to the top edge position when the electronic price tag is normally hung for use.

[0049] The display screen 2 and the main board 3 are connected together. The hook limiting post 51 is used to connect the main board 3, the rear shell 4, and the hook 5 into an integral structure. The L-shaped rear shell limiting hook 41 is used to prevent the front frame 1 from moving downward and vertically relative to the rear shell 4, and the hook 5 is used to prevent the front frame 1 from moving upward relative to the rear shell 4, so as to stably connect the front frame 1, the display screen 2, the main board 3, the rear shell 4, and the hook 5. When there is a collision or the electronic price tag drops to the ground, the various components of the electronic price tag will not come apart, and the user experience is good; the cooperation between the various components of the electronic price tag is ingenious, and the disassembly and assembly efficiency is high; the overall structure is reasonable, minimizing the useless space as much as possible, making the electronic price tag thinner, more compact, and more beautiful in appearance.

[0050] The specific shape of the front frame 1 is not limited, as long as it can be used to install the display screen 2 and the main board 3. For example Figure 1and Figure 8 As shown, the two sides of the face frame 1 form a U-shaped fixing groove 12, and the display screen 2 is embedded in the fixing groove 12. The fixing groove 12 can protect the side of the display screen 2 and extend the service life of the display screen 2. At least two face frame limiting protrusions 11 are respectively arranged on the edges of the two opposite fixing grooves 12, which is convenient for processing and the connection structure is more balanced in force.

[0051] On the basis of the above structure, a compression spring 13 is further provided on the edge of the fixing groove 12. After installation, the compression spring 13 abuts against the display screen 2 and / or the main board 3, so that the display screen 2 can be closely attached to the face frame 1, and the display screen 2 will not shake relative to the face frame 1, the display content is clearer, and the user experience is good.

[0052] like Figure 1 , Figure 3 , Figure 4 , Figure 9 and Figure 10 As shown, a stop rib 43 is provided at the bottom end of the rear shell 4. The stop rib 43 forms an included angle of a set angle with the main body of the rear shell 4. In this embodiment, the stop rib 43 is perpendicular to the rear shell 4. After assembly, the bottom edges of the display screen 2 and the main board 3 abut against the stop rib 43, which can prevent the display screen 2 and the main board 3 from moving downward relative to the rear shell 4 until they are out of the space surrounded by the rear shell 4 and the face frame 1.

[0053] The rear housing 4 is provided with a rear housing mounting buckle 44, such as Figure 5 , Figure 6 , Figure 11 and Figure 12 As shown, the hook 5 is provided with a hook installation buckle 52 that matches the rear shell installation buckle 44. After the rear shell installation buckle 44 and the hook installation buckle 52 are buckled together, the rear shell 4 and the hook 5 are stably connected.

[0054] In order to further improve the stability of the connection between the rear shell 4 and the hook 5, the hook limiting column 51 is fixed on the rear shell 4 by hot melting. The material of the hook 5 is not limited. In this embodiment, the hook 5 is made of plastic with good hot melting performance such as PP.

[0055] like Figure 6 and Figure 11 As shown, the hook 5 includes a hook body 53 and a hook folding portion 54, and the hook limiting column 51 and the hook mounting buckle 52 are both arranged on the hook body 53. During the assembly stage of the electronic price tag, the hook body 53 and the hook folding portion 54 are kept as shown in FIG. Figure 6 and Figure 11 When the electronic price tag is in use, the hook folding portion 54 is flipped relative to the hook body 53, and the hook body 53 and the hook folding portion 54 form an O-shaped structure to be sleeved on the bracket to achieve the connection between the electronic price tag and the bracket.

[0056] As Figures 13 to 16 shown, the electronic price tag further includes a soft-pack lithium battery 6. The soft-pack lithium battery 6 is connected to the main board 3 and is used to supply power to the main board 3. Compared with button batteries, the soft-pack lithium battery 6 has more electrical energy storage, the electronic price tag has a longer usage time, and the trouble of frequently replacing the battery is avoided.

[0057] The specific model of the soft-pack lithium battery 6 is not limited. In this embodiment, the soft-pack lithium battery 321525 is adopted, which has a low self-discharge rate, a long service life, and a battery life of up to 3 to 5 years; the length of the soft-pack lithium battery 321525 is 25 mm, the width is 15 mm, and the height is 3.2 mm. It has a small size and a thin thickness, does not significantly increase the volume of the electronic price tag, and has a high space utilization rate of the electronic price tag.

[0058] The soft-pack lithium battery 6 includes an ear 61 for electrically connecting to the main board 3. In this embodiment, the ear 61 includes an ear connection section 611, an ear main body section 612, and an ear folding section 613 that are sequentially connected and have a combined structure in the shape of a C.

[0059] On the basis of the above structure, the electronic price tag further includes a battery cover 7. The battery cover 7 is detachably connected to the rear case 4, and the soft-pack lithium battery 6 is located in the space surrounded by the main board 3, the rear case 4, and the battery cover 7. Specifically, a bottom baffle 73 is provided on the battery cover 7, and the bottom baffle 73 and the side of the rear case 4 form a frame structure, and the soft-pack lithium battery 6 is surrounded by the frame structure.

[0060] In order to improve the connection stability between the battery cover 7 and the rear case 4, a connection component is provided between the battery cover 7 and the rear case 4. Specifically, an L-shaped cover clamping part 72 is provided on the battery cover 7, and a rear case clamping part 46 is provided on the rear case 4. During assembly, the cover clamping part 72 can clamp the rear case clamping part 46, so that the battery cover 7 cannot move upward or vertically relative to the rear case 4.

[0061] The surface shape of the top connection part 74 of the battery cover 7 is consistent with the shape of the ear 61. After installation, the ear connection section 611 and the ear main body section 612 are attached to the upper surface of the top connection part 74, and the ear folding section 613 is attached to the side end surface of the top connection part 74. The contact area between the ear 61 and the top connection part 74 is larger, and the ear 61 can move better with the top connection part 74.

[0062] A connection pit 71 is provided on the top connection part 74, and a rear case connection protrusion 45 is provided on the inner wall surface of the rear case 4. During assembly, the top connection part 74 of the battery cover plate 7 extends into the rear case 4. After the rear case connection protrusion 45 is embedded in the connection pit 71, it can prevent the battery cover plate 7 from moving downward relative to the rear case 4, realizing the stable connection between the battery cover plate 7 and the rear case 4. The specific shape of the rear case connection protrusion 45 is not limited. In this embodiment, the surface of the rear case connection protrusion 45 is arc-shaped.

[0063] As Figures 13 to 17 shown, during installation, align the cover plate clamping part 72 with the rear case clamping part 46, and push the battery cover plate 7 along the extending direction of the rear case clamping part 46 until the cover plate clamping part 72 is completely clamped with the rear case clamping part 46. At the same time, the top connection part 74 of the battery cover plate 7 drives the tab 61 to extend into the rear case 4. The top connection part 74 undergoes a certain degree of elastic deformation under the extrusion of the rear case connection protrusion 45. When the cover plate clamping part 72 is completely clamped with the rear case clamping part 46, the edge of the top connection part 74 completely crosses over the rear case connection protrusion 45, and the rear case connection protrusion 45 is embedded in the connection pit 71, and the elastic deformation of the top connection part 74 is eliminated. During this process, the tab folded section 613 is located on the front side of the moving direction of the top connection part 74, and the top connection part 74 applies a thrust to the tab folded section 613, and the tab folded section 613 pulls the tab connection section 611 and the tab main section 612 to migrate, preventing the tab connection section 611 and the tab main section 612 from being unable to continue moving with the top connection part 74 due to friction with surrounding components, and the tab 61 is not easily folded and deformed.

[0064] During disassembly, pull the battery cover plate 7 forcefully in the direction opposite to that during installation. The top connection part 74 of the battery cover plate 7 undergoes a certain degree of elastic deformation until the rear case connection protrusion 45 completely disengages from the connection pit 71. Continue to push the battery cover plate 7 in the direction opposite to that during installation until the cover plate clamping part 72 is completely disengaged from the rear case clamping part 46.

[0065] The specific shape, quantity, and installation position of the cover plate clamping part 72 are not limited, as long as the battery cover plate 7 can be stably connected to the rear case 4. In this embodiment, there are four cover plate clamping parts 72, two of which are respectively arranged on the opposite side edges of the battery cover plate 7, and the other two cover plate clamping parts 72 are both arranged on the bottom baffle 73. The bottom baffle 73 and all the cover plate clamping parts 72 form a structure that encloses the soft-pack lithium battery 6, and the position of the soft-pack lithium battery 6 is more stable.

[0066] Given the low strength of the soft-pack lithium battery 6 itself, connecting the battery cover plate 7 and the soft-pack lithium battery 6 into an integrated structure helps to protect the soft-pack lithium battery 6 and extend its service life. The specific connection method between the soft-pack lithium battery 6 and the battery cover plate 7 is not limited, as long as it is convenient for disassembling and assembling the soft-pack lithium battery 6. In this embodiment, double-sided tape is used to bond the soft-pack lithium battery 6 to the battery cover plate 7. When assembling, grasping the battery cover plate 7 can synchronously drive the soft-pack lithium battery 6, making disassembly and assembly more convenient.

[0067] Based on the above structure, as Figure 2 shown, a connecting elastic piece 32 is provided on the main board 3. As Figure 17 shown, after assembly, the connecting elastic piece 32 can firmly abut against the ear 61 of the soft-pack lithium battery 6, reducing the probability of poor contact. The ear 61 is not prone to problems such as folding and deformation, and the current is more smooth and stable.

[0068] Note that the above is only the preferred embodiment of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described here. Various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An electronic price tag, characterized in that, Comprising: A front frame (1) provided with a front frame limiting lug (11); A display screen (2) snap-connected to the front frame (1); A main board (3) snap-connected to the front frame (1), the main board (3) being connected to the display screen (2), and a main board limiting hole (31) being formed on the main board (3); A rear case (4) provided with an L-shaped rear case limiting hook (41), the rear case limiting hook (41) being stuck on the front frame limiting lug (11) to prevent the front frame (1) from vertically and downwardly moving relative to the rear case (4); a rear case limiting hole (42) being formed on the rear case (4); and, A hook (5) provided with a hook limiting post (51), the hook limiting post (51) being inserted into the main board limiting hole (31) and the rear case limiting hole (42) to prevent relative movement between the main board (3) and the rear case (4); the hook (5) abutting against the top end of the front frame (1) to prevent the front frame (1) from upwardly moving relative to the rear case (4).

2. The electronic price tag according to claim 1, characterized in that, Both side edges of the front frame (1) form a U-shaped fixing groove (12), the front frame limiting lug (11) being arranged on the edge of the fixing groove (12), and the display screen (2) being embedded in the fixing groove (12).

3. The electronic price tag according to claim 2, characterized in that, A pressing elastic sheet (13) is further arranged on the edge of the fixing groove (12), and the pressing elastic sheet (13) abuts against the display screen (2) and / or the main board (3).

4. The electronic price tag according to claim 1, wherein A retaining ridge (43) is arranged at the bottom end of the rear case (4), the retaining ridge (43) forming an included angle with a set angle with the main body of the rear case (4), and the retaining ridge (43) being able to prevent the display screen (2) and the main board (3) from downwardly moving relative to the rear case (4).

5. The electronic price tag according to claim 1, wherein A rear case mounting buckle (44) is arranged on the rear case (4), and a hook mounting buckle (52) matching with the rear case mounting buckle (44) is arranged on the hook (5).

6. The electronic price tag according to claim 1, wherein The hook limiting post (51) is heat-melt fixed on the rear case (4).

7. The electronic price tag according to any one of claims 1 to 6, characterized in that The electronic price tag further includes a soft-pack lithium battery (6), and the soft-pack lithium battery (6) is connected to the main board (3).

8. The electronic price tag according to claim 7, characterized in that, A connecting elastic sheet (32) is arranged on the main board (3), and the connecting elastic sheet (32) abuts against the ear (61) of the soft-pack lithium battery (6); and / or, The ear (61) includes an ear connecting section (611), an ear main body section (612) and an ear folding section (613) connected in sequence, and the combined structure of the ear connecting section (611), the ear main body section (612) and the ear folding section (613) is in a C shape.

9. The electronic price tag according to claim 7, wherein The electronic price tag further includes a battery cover plate (7), the battery cover plate (7) being detachably connected to the rear case (4), and the soft-pack lithium battery (6) being located in the space surrounded by the main board (3), the rear case (4) and the battery cover plate (7).

10. The electronic price tag according to claim 9, wherein The soft-pack lithium battery (6) is bonded to the battery cover plate (7); and / or, A connection pit (71) is provided on the battery cover plate (7), and a rear shell connection protrusion (45) is provided on the inner wall surface of the rear shell (4). The rear shell connection protrusion (45) is snapped into the connection pit (71).

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