CN215577451U

CN215577451U - Display device

Info

Publication number: CN215577451U
Application number: CN202120599463.XU
Authority: CN
Inventors: 隋超; 盛保敬; 师宁宁; 刘洋; 白晴
Original assignee: Qingdao Economic And Technology Development District Haier Water Heater Co ltd; Wuhan Haier Water Heater Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Economic And Technology Development District Haier Water Heater Co ltd; Wuhan Haier Water Heater Co Ltd; Haier Smart Home Co Ltd
Priority date: 2021-03-24
Filing date: 2021-03-24
Publication date: 2022-01-18
Anticipated expiration: 2031-03-24

Abstract

The utility model belongs to the technical field of water heaters, and discloses a display device which comprises a shell, a PCB (printed circuit board), an LED nixie tube and a light-transmitting shell. Wherein, be provided with the installation cavity in the casing, be provided with the display hole that feeds through in the installation cavity on the outer wall of casing, the PCB circuit board sets up in the installation cavity, the LED charactron sets up on the PCB circuit board, relative both sides are income plain noodles and play plain noodles respectively on the printing opacity shell, go into the plain noodles and connect in the PCB circuit board, go out the plain noodles and stretch into in the display hole, be provided with the light trap that link up to going into the plain noodles on the play plain noodles, the LED charactron is just to the light trap, the play plain noodles is laid to the filter membrane, can filter the white light source that the LED charactron sent for the colour. According to the utility model, the LED nixie tube can realize a color display effect simply and reliably at low cost by arranging the filter film, and the display from a point light source to a surface light source is realized by arranging the light-transmitting shell and spacing the LED nixie tube and the filter film.

Description

Display device

Technical Field

The utility model relates to the technical field of water heaters, in particular to a display device.

Background

An LED nixie tube is generally arranged on an electric water heater to display information such as temperature, time and the like, the existing LED nixie tube is generally an 8-shaped device formed by packaging a plurality of light-emitting diodes together, a character display surface is opposite to a pin arrangement surface, pins of the pin arrangement surface are connected with a PCB (printed circuit board), and the PCB controls the on and off of the light-emitting diodes to display different digital information. The light source of the LED nixie tube on the existing electric water heater is mostly monochromatic, and the display effect is single.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a display device which can simply and reliably realize the color display effect of an LED nixie tube at low cost.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a display device, comprising:

the display device comprises a shell, a display screen and a display screen, wherein an installation cavity is arranged in the shell, and a display hole communicated with the installation cavity is formed in the outer wall of the shell;

the PCB circuit board is arranged in the mounting cavity;

the LED nixie tube is arranged on the PCB;

the LED digital tube comprises a light-transmitting shell, wherein a light-in surface and a light-out surface are respectively arranged on two opposite sides of the light-transmitting shell, the light-in surface is connected to the PCB, the light-out surface extends into the display hole, a light-transmitting hole penetrating through the light-in surface is formed in the light-out surface, and the LED digital tube is opposite to the light-transmitting hole;

and the filter film is laid on the light emitting surface and can filter the white light source emitted by the LED nixie tube into colors.

Preferably, the LED nixie tube comprises a plurality of LED lamps, the light holes and the LED lamps are arranged in a one-to-one correspondence mode, the light incoming face is attached to the PCB, and the LED lamps extend into the light holes.

Preferably, the housing includes:

the PCB comprises a bottom shell, a PCB circuit board and a PCB, wherein the bottom shell is provided with a mounting groove, and the PCB circuit board is arranged in the mounting groove;

the outer cover is connected to the bottom shell, the mounting groove is covered to form the mounting cavity, and the display hole is formed in the outer cover.

Preferably, two opposite side walls in the mounting groove are respectively provided with a limiting support block, each limiting support block comprises a limiting part and a supporting part which are connected with each other, the limiting parts are connected with the side walls of the mounting groove, and the supporting parts are connected with the bottom of the mounting groove;

be provided with interconnect's first spigot surface and first spacing face in spacing portion, first spigot surface with the lateral wall of mounting groove is the contained angle setting, first spacing face with the lateral wall of mounting groove is parallel to each other, PCB circuit board can the direction of first spigot surface is lower the dress card in a plurality of between the first spacing face, and erect in on the supporting part.

Preferably, a fixing platform is further arranged at the bottom of the mounting groove, the thickness of the fixing platform is equal to that of the supporting part in the groove depth direction of the mounting groove, and a fixing hole is formed in the top surface of the fixing platform.

Preferably, a plurality of clamping blocks are arranged in the mounting groove, a second guide surface and a second limiting surface which are connected with each other are arranged on each clamping block, an included angle between the second guide surface and the groove bottom of the mounting groove is an obtuse angle, the second limiting surface is perpendicular to the groove bottom of the mounting groove, and the PCB can be clamped between the second limiting surfaces under the guidance of the second guide surface.

Preferably, one of the bottom shell and the outer cover is provided with a first clamping protrusion, and the other one of the bottom shell and the outer cover is provided with a first buckle, and the first clamping protrusion is clamped in a clamping hole in the first buckle.

Preferably, the casing further comprises a housing, a containing groove is formed in the housing, the bottom casing is arranged in the containing groove, and the outer cover is connected to the housing.

Preferably, one of the outer cover and the outer shell is provided with a second clamping protrusion, and the other is provided with a second buckle, and the second clamping protrusion is clamped in a clamping hole in the second buckle.

Preferably, a through hole is formed in the bottom of the accommodating groove, and the bottom shell extends into the through hole.

The utility model has the beneficial effects that:

through setting up the filter coating, can be simple reliable, make the LED charactron realize colored display effect with low costs, through setting up the light-transmitting shell, make the light source that the LED charactron sent can evenly project on the filter coating, realize the demonstration from pointolite to surface light source, the display effect is more even, in addition, the setting of light-transmitting shell, erect the display hole department to the casing with the filter coating, the installation replacement of the filter coating of being convenient for, and do not produce with casing and PCB circuit board when the installation replacement and interfere.

Drawings

Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the utility model;

FIG. 2 is a schematic structural diagram of the display device according to the embodiment of the present invention with the cover omitted;

fig. 3 is a schematic structural diagram of a bottom case according to an embodiment of the utility model;

FIG. 4 is an enlarged view at A in FIG. 3;

FIG. 5 is a schematic structural diagram of an outer cover according to an embodiment of the present invention;

FIG. 6 is a schematic view of a one-directional structure of the housing according to the embodiment of the present invention;

FIG. 7 is a schematic view of another orientation of the housing according to the embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a light-transmitting housing according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of the PCB and the LED nixie tube in cooperation according to an embodiment of the present invention.

In the figure:

1. a housing; 101. a display aperture;

11. a bottom case; 111. mounting grooves; 112. a limiting supporting block; 1121. a limiting part; 1122. a support portion; 113. a mounting table; 114. clamping a block; 1141. a second guide surface; 1142. a second limiting surface; 115. a first snap projection;

12. an outer cover; 121. a first buckle; 122. a second snap projection;

13. a housing; 131. a containing groove; 132. a second buckle; 133. through holes; 134. hooking;

2. a PCB circuit board;

3. an LED nixie tube; 31. an LED lamp; 32. a display bar;

4. a light-transmitting shell; 41. a light-transmitting hole;

5. and a light filter film.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar parts throughout or parts having the same or similar functions. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediary, a connection between two elements, or an interaction between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but with another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

As shown in fig. 1 to 9, the present invention provides a display device for a water heater, especially an electric water heater, comprising a housing 1, a PCB 2, an LED nixie tube 3 and a transparent shell 4. Wherein, be provided with the installation cavity in the casing 1, be provided with the display hole 101 that communicates in the installation cavity on the outer wall of casing 1, PCB circuit board 2 sets up in the installation cavity, LED charactron 3 sets up on PCB circuit board 2, relative both sides are income plain noodles and play plain noodles respectively on the printing opacity shell 4, go into the plain noodles and connect in PCB circuit board 2, it stretches into in the display hole 101 to go out the plain noodles, be provided with the light trap 41 that link up to going into the plain noodles on the play plain noodles, LED charactron 3 is just to light trap 41, the plain noodles is laid to filter film 5, can filter the white light source that LED charactron 3 sent for the colour.

In the utility model, the filter coating 5 is arranged, so that the LED nixie tube 3 can realize a color display effect simply and reliably at low cost, the light source emitted by the LED nixie tube 3 can be uniformly projected onto the filter coating 5 by arranging the light-transmitting shell 4, the display from a point light source to a surface light source is realized, the display effect is more uniform, in addition, the filter coating 5 is erected at the display hole 101 of the shell 1 by arranging the light-transmitting shell 4, the installation and the replacement of the filter coating 5 are convenient, and the interference with the shell 1 and the PCB 2 is avoided during the installation and the replacement.

In this embodiment, the filter 5 is an existing color filter with a gradual change effect, and can filter a white light source into a gradual change color, which is a conventional setting in the art, and the structure and principle thereof are not described herein again.

Specifically, the LED nixie tube 3 includes a plurality of LED lamps 31, the light holes 41 are disposed in one-to-one correspondence with the LED lamps 31, the light incident surface is attached to the PCB 2, and the LED lamps 31 extend into the light holes 41. Above-mentioned setting for a plurality of LED lamps 31 separate under a plurality of light trap 41, mutual isolation, and every LED lamp 31 light source independently shows, has avoided influencing each other, and focus alone is projected on filter coating 5, has further improved display effect.

More specifically, the LED nixie tube 3 further includes 14 display bars 32 disposed on the PCB circuit board 2 to form an "88" pattern, a LED lamp 31 is disposed at a center position of the length direction on each display bar 32, the LED lamp 31 emits a white point light source under the power-on control of the PCB circuit board 2, and the control display principle of the specific LED nixie tube 3 is described in reference to the prior art and is not repeated herein.

In this embodiment, the light incident surface of the light-transmitting shell 4 is glued to the PCB 2 after dispensing, the light-transmitting holes 41 on the light-transmitting shell 4 are elongated, each light-transmitting hole 41 faces the envelope of the display strip 32, the LED lamps 31 on the display strip 32 are located in the light-transmitting holes 41, and the thickness of the light-transmitting shell 4 is greater than that of the LED lamps 31, so that light emitted by the LED lamps 31 can be scattered by a distance and then projected onto the filter film 5, and the filter film 5 is glued to the light emergent surface of the light-transmitting shell 4 after dispensing.

Specifically, the case 1 includes a bottom case 11 and an outer cover 12. Wherein, the bottom case 11 is provided with an installation groove 111, the PCB circuit board 2 is arranged in the installation groove 111, the outer cover 12 is connected to the bottom case 11, the cover installation groove 111 forms an installation cavity, and the display hole 101 is arranged on the outer cover 12. The arrangement of the structure of the shell 1 enables the installation of the PCB 2 to be more convenient and reliable.

More specifically, two opposite side walls in the mounting groove 111 are respectively provided with a limit support block 112, the limit support block 112 includes a limit portion 1121 and a support portion 1122 which are connected to each other, the limit portion 1121 is connected to the side wall of the mounting groove 111, and the support portion 1122 is connected to the bottom of the mounting groove 111. Be provided with interconnect's first spigot surface and first spacing face on spacing portion 1121, first spigot surface is the contained angle setting with the lateral wall of mounting groove 111, and first spacing face is parallel to each other with the lateral wall of mounting groove 111, and PCB circuit board 2 can be adorned under the direction of first spigot surface and blocked between a plurality of first spacing faces to erect on supporting part 1122. The arrangement of the limiting support block 112 enables the PCB circuit board 2 and the groove bottom and the side wall of the mounting groove 111 to be spaced, and the PCB circuit board 2 is convenient to dissipate heat.

More specifically, the bottom of the mounting groove 111 is further provided with a fixing platform 113, in the groove depth direction of the mounting groove 111, the thickness of the fixing platform 113 is equal to that of the supporting portion 1122, a fixing hole is formed in the top surface of the fixing platform 113, and the PCB 2 is supported by the fixing platform 113 and is fastened and connected to the bottom case 11 through a fastening member such as a bolt in the fixing hole. The arrangement of the fixing platform 113 enables the fastening connection of the fastener to be firmer and more reliable.

In this embodiment, a plurality of clamping blocks 114 are arranged in the mounting groove 111, a second guide surface 1141 and a second limiting surface 1142 which are connected with each other are arranged on the clamping blocks 114, an included angle between the second guide surface 1141 and the groove bottom of the mounting groove 111 is an obtuse angle, the second limiting surface 1142 is perpendicular to the groove bottom of the mounting groove 111, and the PCB 2 can be clamped between the second limiting surfaces 1142 under the guidance of the second guide surface 1141. Due to the arrangement of the clamping block 114, the clamping and positioning of the PCB 2 are smoother and more reliable.

In this embodiment, the clamping blocks 114 have various structural shapes, and are respectively disposed around the PCB circuit board 2, each of which is provided with one or more than one, in the mounting groove 111, the PCB circuit board 2 is limited by the first limiting surface and a part of the second limiting surface 1142 in a first direction, and is limited by the rest of the second limiting surfaces 1142 in a second direction perpendicular to the first direction.

Specifically, on both the bottom case 11 and the outer cover 12, one is provided with a first snap 115, and the other is provided with a first snap 121, and the first snap 115 is snapped in a snap hole on the first snap 121. Bottom shell 11 and enclosing cover 12 are connected through clamping of first protruding 115 of card and first buckle 121, and convenient reliable, the dismouting is high-efficient.

In this embodiment, the first locking protrusions 115 are disposed on a plurality of outer walls of the bottom case 11, the first locking hooks 121 are disposed on the outer cover 12 and are in one-to-one correspondence with the first locking protrusions 115, and the outer cover 12 is tightly locked on the bottom case 11 under the locking of the first locking protrusions 115 and the first locking hooks 121.

Optionally, the housing 1 further includes a housing 13, the housing 13 is provided with a receiving groove 131, the bottom case 11 is disposed in the receiving groove 131, and the outer cover 12 is connected to the housing 13. The setting of shell 13 can further protect PCB circuit board 2, and through shell 13's isolation buffering, effectively avoided when the installation, drain pan 11 warp and extrudes PCB circuit board 2 in it.

Specifically, on both the outer cover 12 and the outer shell 13, one is provided with a second snap 122, and the other is provided with a second snap 132, and the second snap 122 is snapped into the snap hole on the second snap 132. The outer cover 12 and the outer shell 13 are connected by clamping the second clamping protrusion 122 and the second clamping buckle 132, so that the assembly and disassembly are convenient and reliable, and the assembly and disassembly are efficient.

In this embodiment, the plurality of second locking protrusions 122 are disposed on the outer cover 12 and arranged around the plurality of first locking hooks 121, the plurality of second locking hooks 132 are disposed corresponding to the plurality of second locking protrusions 122 one-to-one and disposed at the bottom of the accommodating groove 131 of the outer cover 13, and the outer cover 12 is tightly locked to the outer cover 13 by the locking of the second locking protrusions 122 and the second locking hooks 132.

More specifically, the bottom of the receiving groove 131 is provided with a through hole 133, and the bottom case 11 extends into the through hole 133. The through holes 133 facilitate the independent disassembly and assembly of the bottom case 11, and avoid the situation that the housing 13 needs to be disassembled first when the bottom case 11 is disassembled and assembled for maintenance.

In the embodiment, a plurality of hooks 134 are arranged on one side of the outer shell 13 facing away from the outer cover 12, and the outer shell 13 can be conveniently and reliably mounted on the shell 1 of the water heater through the hooks 134.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A display device, comprising:

the display device comprises a shell (1), wherein an installation cavity is arranged in the shell (1), and a display hole (101) communicated with the installation cavity is formed in the outer wall of the shell (1);

the PCB circuit board (2) is arranged in the mounting cavity;

the LED nixie tube (3) is arranged on the PCB (2);

the LED digital tube comprises a light-transmitting shell (4), wherein the two opposite sides of the light-transmitting shell (4) are respectively a light-in surface and a light-out surface, the light-in surface is connected to the PCB (2), the light-out surface extends into the display hole (101), a light-transmitting hole (41) penetrating through the light-in surface is formed in the light-out surface, and the LED digital tube (3) is opposite to the light-transmitting hole (41);

and the filter film (5) is laid on the light-emitting surface and can filter the white light source emitted by the LED nixie tube (3) into color.

2. The display device according to claim 1, wherein the LED nixie tube (3) comprises a plurality of LED lamps (31), the light holes (41) are disposed in one-to-one correspondence with the LED lamps (31), the light incident surface is attached to the PCB (2), and the LED lamps (31) extend into the light holes (41).

3. The display device according to claim 1, wherein the housing (1) comprises:

the PCB comprises a bottom shell (11), wherein a mounting groove (111) is formed in the bottom shell (11), and the PCB (2) is arranged in the mounting groove (111);

and the outer cover (12) is connected to the bottom shell (11), covers the mounting groove (111) to form the mounting cavity, and the display hole (101) is formed in the outer cover (12).

4. The display device according to claim 3, wherein two opposite side walls in the mounting groove (111) are respectively provided with a limit support block (112), the limit support block (112) comprises a limit portion (1121) and a support portion (1122) which are connected with each other, the limit portion (1121) is connected to the side wall of the mounting groove (111), and the support portion (1122) is connected to the bottom of the mounting groove (111);

be provided with interconnect's first spigot surface and first spacing face on spacing portion (1121), first spigot surface with the lateral wall of mounting groove (111) is the contained angle setting, first spacing face with the lateral wall of mounting groove (111) is parallel to each other, PCB circuit board (2) can be in the direction of first spigot surface is adorned down the card in a plurality of between the first spacing face to erect in on supporting part (1122).

5. The display device according to claim 4, wherein a fixing platform (113) is further arranged at the bottom of the mounting groove (111), the thickness of the fixing platform (113) is equal to that of the supporting portion (1122) in the groove depth direction of the mounting groove (111), and a fixing hole is arranged on the top surface of the fixing platform (113).

6. The display device according to claim 3, wherein a plurality of clamping blocks (114) are arranged in the mounting groove (111), a second guide surface (1141) and a second limiting surface (1142) which are connected with each other are arranged on the clamping blocks (114), an included angle between the second guide surface (1141) and the groove bottom of the mounting groove (111) is an obtuse angle, the second limiting surface (1142) is perpendicular to the groove bottom of the mounting groove (111), and the PCB (2) can be clamped between the second limiting surfaces (1142) under the guidance of the second guide surface (1141).

7. The display device according to claim 3, wherein the bottom case (11) and the outer cover (12) are provided with a first snap (115) on one side and a first snap (121) on the other side, and the first snap (115) is snapped into a snap hole on the first snap (121).

8. The display device according to claim 3, wherein the housing (1) further comprises a casing (13), a receiving groove (131) is disposed on the casing (13), the bottom case (11) is disposed in the receiving groove (131), and the outer cover (12) is connected to the casing (13).

9. The display device according to claim 8, wherein both the outer cover (12) and the housing (13) are provided with a second snap (122) on one and a second snap (132) on the other, the second snap (122) being snapped into a snap hole on the second snap (132).

10. The display device according to claim 8, wherein a bottom of the receiving groove (131) is provided with a through hole (133), and the bottom case (11) is protruded into the through hole (133).