Air escape valve and panel lamp

Abstract

The invention provides a snuffle valve and a panel lamp, and relates to the technical field of lighting equipment, the snuffle valve is installed on a snuffle hole of the panel lamp and mainly comprises a valve body, an annular groove is formed in the outer wall of the valve body, and the valve body is clamped to the snuffle hole through the annular groove. When the air pressure in the panel lamp is smaller than or equal to the gravity of the valve body, the valve body seals the air leakage hole, and when the air pressure in the panel lamp is larger than the gravity of the valve body, the valve body is jacked upwards, air can be discharged from a gap between the annular groove and the air leakage hole, and due to the fact that the gap between the annular groove and the air leakage hole is small, the air leakage effect can be guaranteed; and mosquitoes can be prevented from entering from the air leakage hole to influence the lighting effect.

Description

Technical Field

[0001] The present invention relates to the technical field of lighting equipment, and in particular to an air release valve and a flat panel lamp. Background Art

[0002] For flat panel lights that use a backlight solution, there is a cavity from the light source to the light-emitting surface. When the light source is working, the heat will cause the temperature of the gas in the cavity to rise and the volume to expand. The larger the volume and power of the lamp, the more obvious this effect will be.

[0003] If the gas cannot be discharged in time, it will form pressure on the light-emitting surface diffusion plate. If the diffusion plate is in this state for a long time, there is a risk of deformation and falling off.

[0004] Therefore, it is necessary to design an air leakage hole on the flat panel lamp. However, the air leakage hole will cause mosquitoes to drill into the lamp body cavity, affecting the lighting effect. Summary of the invention

[0005] In view of this, one of the purposes of the present invention is to provide an air leakage valve to solve the technical problem in the prior art that air leakage holes are designed on flat lamps, causing mosquitoes to drill into the lamp body cavity through the air leakage holes, thereby affecting the lighting effect.

[0006] A second object of the present invention is to provide a flat panel lamp having an air release valve.

[0007] In order to achieve one of the above-mentioned purposes, the present invention provides an air leakage valve for installation on the air leakage hole of a flat lamp, including a valve body, an annular groove is provided on the outer wall of the valve body, and the valve body is clamped on the air leakage hole through the annular groove. When the air pressure in the flat lamp is less than or equal to the gravity of the valve body, the valve body seals the air leakage hole. When the air pressure in the flat lamp is greater than the gravity of the valve body, the valve body is lifted up, and the gas is discharged from the gap between the annular groove and the air leakage hole.

[0008] According to an optional embodiment, an exhaust passage is provided on the side wall of the annular groove disposed in the flat lamp.

[0009] According to an optional embodiment, the exhaust passages include a plurality of exhaust passages, and adjacent exhaust passages are spaced apart by a preset distance.

[0010] According to an optional embodiment, a toothed grille is provided on the side wall of the annular groove disposed in the flat lamp, and the gap between the toothed grille serves as the exhaust passage.

[0011] According to an optional embodiment, the toothed grid is arranged around the circumference of the valve body.

[0012] According to an optional embodiment, a central column is disposed in the valve body, and the central column constitutes the bottom of the annular groove.

[0013] According to an optional embodiment, the center column and the valve body are formed integrally.

[0014] According to an optional embodiment, a countersunk hole is provided on one side of the central column disposed inside the flat lamp.

[0015] According to an optional embodiment, the countersunk hole is cylindrical.

[0016] In order to achieve the second purpose above, the present invention also provides a flat panel lamp, comprising a back cover, a light-emitting surface diffusion plate and a light-emitting body, wherein the back cover is arranged on the light-emitting surface diffusion plate, the light-emitting body is arranged on the inner surface of the back cover, and also comprises any of the above-mentioned air release valves, the back cover is provided with an air release hole, and the air release valve is installed on the air release hole.

[0017] The air release valve provided by the present invention has the following technical effects:

[0018] This type of air release valve is installed on the air release hole of the flat lamp, and is mainly composed of a valve body. An annular groove is provided on the outer wall of the valve body. The valve body is clamped on the air release hole through the annular groove. The valve body of the present invention can move relative to the flat lamp, that is, when the air pressure in the flat lamp is less than or equal to the gravity of the valve body, the valve body seals the air release hole. When the air pressure in the flat lamp is greater than the gravity of the valve body, the valve body is pushed up, and the gas can be discharged from the gap between the annular groove and the air release hole. Since the gap between the annular groove and the air release hole is small, it can not only ensure the air release effect, but also prevent mosquitoes from drilling into the air release hole and affecting the lighting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a three-dimensional structural schematic diagram of a preferred embodiment of the air release valve of the present invention;

[0021] Figure 2 yes Figure 1 The front view of the middle air relief valve;

[0022] Figure 3 yes Figure 2 A cross-sectional view of the middle air relief valve along the AA direction;

[0023] Figure 4 yes Figure 1 The structure diagram of the middle air relief valve in normal state;

[0024] Figure 5 yes Figure 1 A structural schematic diagram of the middle air release valve in the air release state;

[0025] Figure 6 Contains Figure 1 Schematic diagram of the structure of the flat panel light of the middle air release valve.

[0026] in, Figure 1-Figure 6 :

[0027] 10. air release valve; 20. rear cover; 201. air release hole; 30. light emitting surface diffusion plate;

[0028] 1. Valve body; 11. Upper valve body; 12. Lower valve body; 13. Annular groove; 14. Toothed grille; 15. Center column; 151. Countersunk hole. DETAILED DESCRIPTION

[0029] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0030] The reasons for the deformation of the light-emitting diffuser on the flat panel lamp are analyzed as follows:

[0031] For example, for a 200W 600*1200*65mm flat panel light, at an ambient temperature of 15°C, the lamp cavity has a standard atmospheric pressure of P1 = 101.325 kPa. When the temperature rises to the flat panel light operating temperature of 55°C, according to the ideal gas law:

[0032] PV=nRT

[0033] Only the temperature changes. The pressure in the cavity at 55°C is calculated to be:

[0034] P2=114.44kPa

[0035] The calculation formula for converting reference pressure to pressure is:

[0036] F=P×A

[0037] If the lamp cavity is completely sealed, the pressure acting on the 600*1200mm light-emitting surface diffusion plate is: 9433.2N.

[0038] Since the lamp cavity is not completely sealed, the internal gas will slowly overflow from the gap in the lamp cavity as the temperature rises. The actual pressure on the diffuser plate is much less than 9433.2N, but according to tests, it is still enough to cause the diffuser plate to deform.

[0039] Based on the above defects, it is necessary to design an air vent on the flat lamp. However, the air vent will cause mosquitoes to drill into the lamp cavity, affecting the lighting effect. Therefore, it is necessary to design an air vent valve that can both vent air from the lamp cavity and prevent mosquitoes from drilling into the lamp cavity.

[0040] The following is combined with specific Figure 1-6 The air release valve and the air release valve flat panel lamp of the present invention are described in detail.

[0041] like Figure 6 The figure is a schematic diagram of the structure of a preferred embodiment of the flat panel lamp of the present invention, which includes a back cover, a light-emitting surface diffusion plate and a light-emitting body. The back cover is arranged on the light-emitting surface diffusion plate, and a cavity is formed between the back cover and the light-emitting surface diffusion plate. The light-emitting body is installed on the inner surface of the back cover, and the light emitted by the light-emitting body is scattered outward through the light-emitting surface diffusion plate.

[0042] At the same time, at least one air leak hole is provided on the back cover, and an air leak valve is installed on each air leak hole. The air leak valve can allow air to be discharged from the cavity while preventing mosquitoes from entering.

[0043] It should be noted that the present invention does not limit the number of the vent holes, for example, it can be one, two, or three.

[0044] The structure of a preferred embodiment of the air release valve is described in detail below.

[0045] like Figure 1-5 As shown, the air release valve 10 comprises a valve body 1 which is made of a light material and can be lifted upward when the lower part thereof is subjected to an air pressure exceeding its own weight.

[0046] The valve body 1 of the present embodiment is preferably cylindrical, with the upper and lower surface edges being chamfered, and an annular groove 13 being provided on its outer wall. The annular groove 13 is located in the middle of the valve body 1 and is arranged circumferentially around the valve body 1, that is, the annular groove 13 is formed by the side wall in the middle of the valve body 1 being recessed inward, and the middle part thereof is a center column 15, which constitutes the bottom of the annular groove 13 and is integrally formed with the valve body 1.

[0047] The valve body 1 of this embodiment is clamped on the air leakage hole 201 through the annular groove 13, and the valve body 1 can move slightly up and down relative to the air leakage hole 201 under the drive of external force, thereby realizing the air leakage function.

[0048] When the air pressure inside the flat lamp is less than or equal to the gravity of the valve body 1, the valve body 1 seals the air leakage hole 201. When the air pressure inside the flat lamp is greater than the gravity of the valve body 1, the valve body 1 is lifted up, and the gas is discharged from the gap between the annular groove 13 and the air leakage hole 201, which can prevent mosquitoes from passing through.

[0049] Specifically, in this embodiment, an annular groove 13 is disposed on a side wall of the flat lamp and an exhaust passage is provided.

[0050] The pressure relief valve is installed on the pressure relief hole. Since the annular groove 13 is located on the pressure relief hole, the upper valve body 11 of the pressure relief valve is located outside the flat lamp, and the lower valve body 12 of the pressure relief valve is located inside the flat lamp (the recessed part between the upper valve body 11 and the lower valve body 12 is the annular groove 13).

[0051] The exhaust passage of the present embodiment is located on the lower valve body 12, which extends inward from the outer wall of the lower valve body 12 and is connected to the gap between the annular groove 13 and the air leakage hole 201. That is, when the gas pressure in the cavity of the flat lamp is less than the gravity of the valve body 1, the upper surface of the flat lamp back cover 20 directly contacts the lower surface of the upper valve body 11, and the amount of gas discharged outward is small. When the gas pressure in the cavity of the flat lamp is greater than the gravity of the valve body 1 itself, the valve body 1 is affected by the air pressure and is pushed upward. The high-pressure gas will be able to be introduced from the exhaust passage located on the lower valve body 12 and discharged outward through the gap between the annular groove 13 and the air leakage hole 201.

[0052] It should be noted that the present invention does not limit the number of exhaust channels, nor does it limit the shape of the exhaust channels. They may be bent, straight, or in other shapes, as long as they extend inward from the outer wall of the lower valve body 12 and are connected to the gap between the annular groove 13 and the air leakage hole 201. The present invention does not limit the shape of the exhaust channels.

[0053] The exhaust passage of this embodiment is preferably an isosceles trapezoidal structure, that is, the portion of the lower valve body 12 adjacent to the annular groove 13 extending inward from the outer wall has a toothed grille 14, such as Figure 1 and Figure 2 As shown, the gaps between the toothed grilles 14 are exhaust passages. Meanwhile, since the toothed grilles 14 are distributed in a ring shape, the exhaust passages formed by the toothed grilles 14 are isosceles trapezoidal structures.

[0054] Since the exhaust passage is preferably an isosceles trapezoidal structure, and the sizes of the two ends of the isosceles trapezoidal structure are inconsistent, when it is used as an exhaust passage, the size continuously decreases during the process of the lower valve body 12 extending inward from the outer wall, thereby preventing mosquitoes from entering.

[0055] The valve body 1 with the toothed grid 14 has two states:

[0056] The first state is the normal state, that is, when the gas pressure in the flat lamp cavity is less than the gravity of the valve body 1, the upper surface of the flat lamp back cover 20 is directly attached to the lower surface of the upper valve body 11, the gap is less than 0.2mm, the gas discharge is small, and mosquitoes cannot enter through the vent hole 201. Figure 4 shown.

[0057] The second state is the deflated state, that is, the cavity temperature of the flat lamp rises and the pressure increases. When the gas pressure in the cavity of the flat lamp increases to be greater than the gravity of the valve body 1 itself, the valve body 1 is pushed up by the air pressure, and the high-pressure gas can be introduced from the exhaust channel formed by the toothed grille 14 on the lower valve body 12, and discharged outward through the gap between the annular groove 13 and the deflated hole 201, as shown in FIG. Figure 5 shown.

[0058] In addition, in order to reduce the weight of the valve body 1, the valve body 1 is conveniently lifted by the air pressure formed in the cavity of the flat lamp, such as Figure 1-6 As shown, one end of the center column 15 located in the flat lamp has a countersunk hole 151, and the countersunk hole 151 is preferably cylindrical.

[0059] For example, the diameter of the air vent hole 201 on the flat lamp in this embodiment is 12mm, the diameter of the central column 15 of the air vent valve 10 is 11mm, and a 1mm gap is left for ventilation. The toothed grille 14 is 1.5mm high and has a minimum gap of 0.96mm to prevent large mosquitoes from entering the lamp body during ventilation.

[0060] The air relief valve 10 of the present invention is installed on the air relief, which can achieve the following effects:

[0061] Avoid deformation of the light-emitting diffuser plate 30 due to heat generation of the flat panel lamp, which may affect the appearance of the lamp;

[0062] Avoid the flat panel lamp from falling off due to the heat of the light source, which may affect the service life and cause safety hazards;

[0063] Prevent mosquitoes from entering due to ventilation of the lamp cavity, which would affect the lighting effect of the lamp.

[0064] In the description of the present invention, it should be noted that, unless otherwise specified, "multiple" means two or more than two; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0065] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0066] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A vent valve, used to be installed on the vent hole of a flat panel lamp, characterized in that: It includes a valve body, an annular groove is provided on the outer wall of the valve body, and the valve body is clamped on the air leakage hole through the annular groove. When the air pressure in the flat lamp is less than or equal to the gravity of the valve body, the valve body seals the air leakage hole. When the air pressure in the flat lamp is greater than the gravity of the valve body, the valve body is lifted up and the gas is discharged from the gap between the annular groove and the air leakage hole.

2. The air release valve according to claim 1, characterized in that: An exhaust passage is arranged on the side wall of the annular groove disposed inside the flat lamp.

3. The air release valve according to claim 2, characterized in that: The exhaust passages include a plurality of exhaust passages, and adjacent exhaust passages are spaced apart by a preset distance.

4. The air release valve according to claim 2, characterized in that: The side wall of the annular groove disposed in the flat lamp is provided with a toothed grille, and the gaps between the toothed grilles serve as the exhaust passage.

5. The air release valve according to claim 4, characterized in that: The toothed grid is arranged around the circumference of the valve body.

6. The air release valve according to any one of claims 1 to 5, characterized in that: A central column is arranged in the valve body, and the central column forms the groove bottom of the annular groove.

7. The air release valve according to claim 6, characterized in that: The center column is integrally formed with the valve body.

8. The air release valve according to claim 7, characterized in that: A countersunk hole is provided on one side of the central column disposed in the flat lamp.

9. The air release valve according to claim 8, characterized in that: The countersunk hole is cylindrical.

10. A flat panel lamp, comprising a rear cover, a light-emitting surface diffusion plate and a light-emitting body, wherein the rear cover is arranged on the light-emitting surface diffusion plate, and the light-emitting body is arranged on the inner surface of the rear cover, characterized in that: It also includes the air release valve according to any one of claims 1 to 9, wherein the rear cover is provided with an air release hole, and the air release valve is installed on the air release hole.

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