CN219039970U

CN219039970U - Shell structure of LED nixie tube

Info

Publication number: CN219039970U
Application number: CN202223396611.1U
Authority: CN
Inventors: 陈俊达
Original assignee: Guangxi Ruiyexing Optoelectronics Co ltd
Current assignee: Guangxi Ruiyexing Optoelectronics Co ltd
Priority date: 2022-12-19
Filing date: 2022-12-19
Publication date: 2023-05-16
Anticipated expiration: 2032-12-19

Abstract

The utility model relates to the technical field of nixie tubes and discloses a shell structure of an LED nixie tube, which comprises a shell for installing a PCB (printed Circuit Board), wherein one end of the shell is provided with an opening, a light guide part is integrally formed in the shell, retaining walls are arranged at the edges of the periphery in the shell, supporting steps for placing and supporting the PCB are arranged on the inner side surfaces of the retaining walls, a groove is arranged in the middle of the top surface of each frame of the retaining walls, an elastic buckle for pressing the PCB is fixed in the groove, and an arc-shaped groove matched and clamped with the elastic buckle is formed in the PCB. According to the utility model, the retaining wall, the supporting step and the elastic buckle are adopted to enable the PCB to be tightly attached to the supporting step, so that the problem of glue leakage during filling and sealing is avoided, and the air tightness of a filling and sealing product is ensured.

Description

Shell structure of LED nixie tube

Technical Field

The utility model relates to the technical field of nixie tubes, in particular to a shell structure of an LED nixie tube.

Background

When the shell structure of the LED nixie tube is packaged, after the PCB board distributed with the light emitting diodes is arranged in the shell, the PCB board is packaged by potting colloid in the shell, so that the sealing effect is achieved, and the use requirement is met. The encapsulated colloid is silicon resin or epoxy resin, is in a liquid state before encapsulation, and is cured and molded after encapsulation. When the PCB is installed, the PCB is usually matched and positioned through the positioning columns and the positioning holes, certain gaps exist when the positioning holes are matched with the positioning columns, and due to the fact that the potting colloid has fluidity, the potting colloid permeates from the gaps, in addition, the edges of the PCB and the shell are prone to being placed unevenly, the edges are combined untightly, glue leakage occurs, and therefore the problem that devices are exposed is solved when the potting colloid is reduced.

Disclosure of Invention

The utility model aims to solve the problem, and provides a shell structure of an LED nixie tube, which solves the problem of glue leakage when a PCB (printed circuit board) and a shell are combined with potting glue.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a shell structure of LED charactron, includes the casing that is used for installing the PCB board, the one end opening of casing, integrated into one piece has light guide part in the casing, edge is equipped with the barricade all around in the casing, the medial surface of barricade is equipped with the supporting step that is used for placing and supports the PCB board, the degree of depth that supports the step is greater than the thickness of PCB board and is 8mm at least, the top surface middle part of each frame of barricade is equipped with the recess, the recess internal fixation has the elasticity buckle that is used for compressing tightly the PCB board, be equipped with the arc wall with elasticity buckle cooperation chucking on the PCB board.

Further, the elastic buckle comprises a spring and a clamping part which can stretch out and draw back in the groove, one end of the spring is connected with the groove, the other end of the spring is connected with the clamping part, and the clamping part is clamped with the arc-shaped groove in a matching way.

Further, the depth of the supporting step is 10-15mm greater than the thickness of the PCB.

Further, the height of the end face of the light guide part is flush with the height of the supporting step.

Further, a plurality of reinforcing ribs are arranged between the light guide parts and the shell.

By adopting the technical scheme, the utility model has the following beneficial effects:

according to the utility model, the retaining wall, the supporting steps and the elastic buckles are arranged, when the PCB is placed on the supporting steps, the PCB is tightly pressed through the elastic buckles, so that the PCB is tightly attached to the supporting steps 5, the problem of glue leakage during filling and sealing is avoided, the air tightness of a filling and sealing product is ensured, and meanwhile, the PCB and the retaining wall form a glue filling and sealing space, and the quantity of the filling and sealing glue is convenient to control.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the elastic buckle of the present utility model;

in the figure: 1-shell, 2-light guide part, 3-strengthening rib, 4-barricade, 5-supporting step, 6-recess, 7-elasticity buckle, 71-spring, 72-chucking part, 8-PCB board, 81-arc wall.

Detailed Description

In order to enable those skilled in the art to better understand the present utility model, the following description will make clear and complete descriptions of the technical solutions according to the embodiments of the present utility model with reference to the accompanying drawings. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The terms first, second and the like in the description and in the claims and in the above-described figures are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. Furthermore, the terms "comprising," "including," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

As shown in fig. 1 and 2, a shell structure of LED digital tube, including the casing 1 that is used for installing the PCB 8, the one end opening of casing 1, integrated into one piece has light guide part 2 in the casing 1, and the edge is equipped with barricade 4 around in the casing 1, and the medial surface of barricade 4 is equipped with the supporting step 5 that is used for placing and supporting PCB 8, and the degree of depth of supporting step 5 is greater than the thickness of PCB 8 and is 8mm at least, and the top surface middle part of each frame of barricade 4 is equipped with recess 6, and recess 6 internal fixation has the elasticity buckle 7 that is used for compressing tightly PCB 8, is equipped with the arc groove 81 with elasticity buckle 7 cooperation chucking on the PCB 8. The shell 1 is formed by adopting a plastic material in an injection molding mode, and the light guide part 2, the retaining wall 4, the supporting step 5 and the groove 6 are integrally formed with the shell 1.

In this embodiment, the elastic buckle 7 includes a spring 71, a clamping portion 72 that is movably telescopic in the groove 6, one end of the spring 71 is connected with one end of the groove 6, the other end of the spring 73 is connected with the clamping portion 72, and the clamping portion 72 is engaged with the arc-shaped groove 81. After the PCB 8 is placed on the supporting step 5, the clamping part 72 is pushed to be clamped in the arc-shaped groove 81 of the PCB 8 by the elastic force of the spring 71, so that the PCB 8 is tightly attached to the supporting step 5, and the problem of glue leakage during filling and sealing due to uneven peripheral edges is avoided.

In this embodiment, the depth of the supporting step 5 is greater than 10-15mm of the thickness of the PCB 8. The pouring sealant is poured on the back of the PCB 8, and forms a pouring space through the retaining wall 4, the pouring thickness of the colloid is ensured by the structure, the back of the PCB 8 is ensured to be sealed, the problem of poor exposed sealing is avoided, the consumption of the pouring sealant is favorably controlled, the waste is reduced, and the cost is saved.

In this embodiment, the height of the end surface of the light guide portion 2 is flush with the height of the support step 5. When the PCB 8 is placed on the support step 5, the PCB 8 can be closely attached to the end face of the light guide portion 2.

In this embodiment, a plurality of reinforcing ribs 3 are disposed between the light guiding portions 2 and the housing 1. By arranging the reinforcing ribs 3, the strength and rigidity of the plastic part of the shell 1 are increased, so that the plastic part is not easy to deform.

When the PCB 8 is packaged with the shell 1, the PCB 8 is placed on the supporting step 5 through the light outlet of the corresponding light guide part 2 of the part fixed with the light emitting diode on the PCB 8, the end face of the light guide part 2 is tightly attached to the PCB 8, the clamping part 72 is clamped in the arc-shaped groove 81 of the PCB 8 under the action of the spring 71, the PCB 8 is clamped on the supporting step 5, the PCB 8 is tightly attached to the supporting step 5, looseness is avoided, the problem that glue leakage occurs due to uneven edges around is avoided, then glue is encapsulated on the back of the PCB 8, the glue filling amount is controlled by the depth of the supporting step 5, and the sealing performance is ensured. Because the PCB 8 is tightly attached to the edge of the supporting table, the pouring sealant is not easy to leak from the edge of the PCB and the supporting step 5 to the bottom, and the air tightness of the pouring sealant product is ensured.

The foregoing utility model has been generally described in great detail, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, it is intended to cover modifications or improvements within the spirit of the inventive concepts.

Claims

1. The utility model provides a shell structure of LED charactron which characterized in that: including the casing that is used for installing the PCB board, the one end opening of casing, integrated into one piece has light guide part in the casing, edge all around is equipped with the barricade in the casing, the medial surface of barricade is equipped with the support step that is used for placing and supports the PCB board, the degree of depth that supports the step is greater than the thickness of PCB board and is 8mm at least, the top surface middle part of each frame of barricade is equipped with the recess, the recess internal fixation has the elasticity buckle that is used for compressing tightly the PCB board, be equipped with the arc groove with elasticity buckle cooperation chucking on the PCB board.

2. The housing structure of an LED nixie tube according to claim 1, wherein: the elastic buckle comprises a spring and a clamping part which can stretch out and draw back in the groove, one end of the spring is connected with the groove, the other end of the spring is connected with the clamping part, and the clamping part is clamped with the arc-shaped groove in a matching way.

3. The housing structure of an LED nixie tube according to claim 1, wherein: the depth of the supporting step is 10-15mm greater than the thickness of the PCB.

4. The housing structure of an LED nixie tube according to claim 1, wherein: the end face of the light guide part is flush with the supporting step.

5. The housing structure of an LED nixie tube according to claim 4, wherein: a plurality of reinforcing ribs are arranged between the light guide parts and the shell.