CN110043830B

CN110043830B - Lighting device and microwave oven

Info

Publication number: CN110043830B
Application number: CN201910297003.9A
Authority: CN
Inventors: 洪力; 朱模潭; 梁国宏
Original assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Priority date: 2019-04-11
Filing date: 2019-04-11
Publication date: 2021-07-27
Anticipated expiration: 2039-04-11
Also published as: CN110043830A

Abstract

The invention discloses a lighting device and a microwave oven, wherein the lighting device comprises a diffusion plate and a lamp panel provided with lamp beads; a cavity corresponding to the lamp beads is formed in one side, away from the lamp panel, of the diffusion plate; the lamp beads are inserted into the diffusion plate and embedded into the cavity. According to the technical scheme, the cavity arranged on the diffusion plate is adopted, the lamp beads are utilized to realize illumination, and the problem that the existing light-transmitting plate is easily influenced by high temperature is solved by utilizing the characteristics of good heat resistance and high light transmittance of the diffusion plate as the cavity is arranged on the diffusion plate; because will in this scheme the lamp pearl sets up in the cavity on the diffuser plate, can make even, soft of light that lighting device shines, avoids dazzling the problem of light.

Description

Lighting device and microwave oven

Technical Field

The invention relates to the field of microwave ovens, in particular to a lighting device and a microwave oven.

Background

Oven lamps used in the existing microwave oven are divided into several types: the LED bulb comprises an incandescent lamp, a halogen lamp, an LED lamp and the like, wherein when the LED bulb is installed, the bulb is fixed on a PCB, the PCB is installed in a reflecting cover, and the lamp light is reflected by the reflecting cover and then irradiates the furnace cavity through a light transmitting sheet. For example, in patent No. CN204240438U, a microwave oven lamp is disclosed, in which a light-transmitting sheet is provided on a reflector, and the lamp light is irradiated into the oven cavity through the light-transmitting sheet. The light rays of the lamp are concentrated, so when the light rays enter the furnace cavity through the light transmitting sheets, the light rays are not uniformly distributed, and the problem of local glare exists in the furnace cavity; meanwhile, the light-transmitting sheet is easily influenced by high temperature after being used for a long time, so that the light transmittance is reduced.

Disclosure of Invention

The invention mainly aims to provide an illuminating device and a microwave oven, and aims to solve the problems of glare and low light transmittance caused by light distribution of the illuminating device of the conventional microwave oven.

In order to achieve the purpose, the lighting device provided by the invention is used for lighting the oven cavity of the microwave oven and comprises a diffusion plate and a lamp panel provided with lamp beads; a cavity corresponding to the lamp beads is formed in one side, away from the lamp panel, of the diffusion plate; the lamp beads are inserted into the diffusion plate and embedded into the cavity.

Optionally, an end surface of the diffusion plate, which is away from one side of the lamp panel, protrudes outwards;

the protrusion is hollow inside to form the cavity.

Optionally, the protrusions are spherical structures.

Optionally, a lamp bracket is arranged on one side, away from the lamp panel, of the diffusion plate;

the lamp bracket is provided with a through hole corresponding to the position of the bulge;

the protrusion is inserted into the through hole and extends out to one side of the lamp support, which is far away from the diffusion plate.

Optionally, a wave leakage prevention protection plate is arranged between the diffusion plate and the lamp panel.

Optionally, a line passing hole corresponding to the position of the lamp bead is formed in the anti-leakage wave protection plate;

the lamp pearl through running through the wire of crossing the line hole with the lamp plate is connected.

Optionally, a cavity top plate is arranged on one side, away from the lamp panel, of the lamp support;

the lamp support is arranged on the cavity top plate.

Optionally, at least two groups of the lamp beads are arranged on the lamp panel;

the colors of the lamp beads in each group are different.

Optionally, a plurality of groups of cavities are arranged on the diffusion plate;

the lamp beads are respectively arranged in the cavities;

and the plurality of groups of cavities are arranged on the diffusion plate in an annular array.

The invention provides a microwave oven based on the lighting device, which comprises a microwave oven body and the lighting device; the lighting device is arranged on the inner side of the microwave oven body and used for lighting inside the microwave oven body.

The lighting device comprises a diffusion plate and a lamp panel provided with lamp beads; a cavity corresponding to the lamp beads is formed in one side, away from the lamp panel, of the diffusion plate; the lamp beads are inserted into the diffusion plate and embedded into the cavity.

According to the technical scheme, the cavity arranged on the diffusion plate is adopted, the lamp beads are utilized to realize illumination, and the problem that the existing light-transmitting plate is easily influenced by high temperature is solved by utilizing the characteristics of good heat resistance and high light transmittance of the diffusion plate as the cavity is arranged on the diffusion plate; because will in this scheme the lamp pearl sets up in the cavity on the diffuser plate, can make even, soft of light that lighting device shines, avoids dazzling the problem of light.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view of an illumination device according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a backlight side structure of the diffuser plate according to an embodiment of the present invention;

FIG. 3 is a schematic view of an illumination side structure of the diffuser plate according to an embodiment of the present invention;

FIG. 4 is a front view of the diffuser plate according to an embodiment of the present invention;

FIG. 5 is a sectional view taken along line B-B of FIG. 4;

FIG. 6 is a schematic view of a backlight side structure of a microwave oven according to an embodiment of the present invention;

FIG. 7 is a schematic view of an illumination side structure of a microwave oven according to an embodiment of the present invention;

FIG. 8 is an exploded view of a microwave oven backlight side illumination device according to an embodiment of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Microwave oven body	11	Cavity roof
20	Lamp support	30	Diffusion plate
				31	Projection	32	Cavity body
40	Lamp panel	50	Anti-leakage wave protection plate
				51	Wire through hole

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an illumination device according to an embodiment of the invention; the invention provides a lighting device, which is used for lighting a microwave oven chamber and comprises a diffusion plate 30 and a lamp plate 40 provided with lamp beads; a cavity 32 corresponding to the lamp beads is arranged on one side of the diffusion plate 30, which is far away from the lamp panel 40; the beads are inserted into the diffuser plate 30 and embedded in the cavity 32. When the installation, will diffuser plate 30 is equipped with cavity 32 one side and faces the region that needs the illumination, will lamp plate 40 one side is as the lighting device outside, the lamp pearl is used for circular telegram luminous, works as the lamp pearl embedding when in the cavity 32, the light that the lamp pearl produced shines behind the cavity 32 the diffuser plate 30 is kept away from lamp plate 40 one side.

Referring to fig. 2, fig. 3, fig. 4 and fig. 5, fig. 2 is a schematic diagram of a backlight side structure of the diffuser plate in an embodiment of the present invention, fig. 3 is a schematic diagram of an illumination side structure of the diffuser plate in an embodiment of the present invention, fig. 4 is a front view of the diffuser plate in an embodiment of the present invention, and fig. 5 is a cross-sectional view taken along direction B-B in fig. 4. The diffusion plate 30 may be an acrylic plate.

Because will in this scheme cavity 32 sets up diffuser plate 30 is kept away from lamp plate 40 one side, the lamp pearl is in light that produces in the cavity 32 can pass through cavity 32 reflects and refracts, simultaneously, compares current lamp pearl setting at the outside mode of diffuser plate 30, and the illumination intensity that this scheme produced is stronger, helps improving the problem that the light utilization rate that current lighting apparatus that is provided with the diffuser plate exists is low.

Because diffuser plate 30 has good heat resistance, especially when being used for firing equipment such as microwave oven, this scheme will the lamp pearl sets up inside cavity 32, can utilize cavity 32 protection the lamp pearl avoids the lamp pearl to damage.

Cavity 32 can be for setting up diffuser plate 30 is kept away from the hollow structure of lamp plate 40 one side, cavity 32's shape can be according to the shape of lamp pearl is confirmed. Take common emitting diode as the lamp pearl for example, when the LED lamp is circular, cavity 32 is for setting up circular cavity on the diffuser plate 30, the light that the lamp pearl produced passes through circularly behind the cavity 32, can be even spread to the cavity 32 is outside, and light can produce reflection and refraction on the equidirectional not when passing through the diffuser plate 30 to change the circuit of light, make the light that the lamp pearl produced can the dispersed spread to the cavity 32 is outside, make follow the light that lighting device produced is softer, avoids the problem of dazzling the light that current lighting device exists.

In order to improve the illumination intensity of the lighting device, in the scheme, the volume of the lamp beads can be increased or the number of the lamp beads can be increased; when the scheme of increasing the volume of the lamp bead is adopted, when an annular LED lamp is adopted as the lamp bead, the cavity 32 can also be an annular cavity 32 structure arranged on the diffusion plate 30, and the lamp bead is embedded in the cavity 32, so that the cavity 32 has the effect of fixing the lamp bead; when the scheme of increasing the number of the lamp beads is adopted, a plurality of groups of independent cavities 32 can be respectively arranged on the diffusion plate 30, the lamp beads are respectively arranged in the independent cavities 32, the volume of the cavities 32 can also be increased, and a plurality of lamp beads are arranged in the cavities 32.

In this scheme, the lamp plate can adopt current PCB lamp plate, lamp plate control opening and close of lamp pearl adopts current procedure and control circuit, no longer gives unnecessary details.

In order to further improve the illumination intensity of the lighting device in the present embodiment, optionally, a plurality of sets of the cavities 32 are disposed on the diffusion plate 30; the lamp beads are respectively arranged in the cavity 32; the plurality of sets of cavities 32 are arranged in an annular array on the diffuser plate 30. Through setting up the multiunit cavity 32, can distribute the multiunit simultaneously the lamp pearl effectively improves lighting device's illumination intensity.

The distribution mode of the cavities 32 can be that a plurality of LED lamps are used as lamp beads, and the lamp beads are respectively arranged in each cavity 32; and respectively connecting each lamp bead with the lamp panel 40. Utilize a plurality of annular array the cavity 32, make in the cavity 32 the lamp pearl circular telegram is luminous, and the lamp pearl of equipartition can lighting device can produce even light, effectively improves lighting device's illumination intensity to avoid dazzling light.

Optionally, at least two groups of the lamp beads are arranged on the lamp panel 40; the colors of the lamp beads in each group are different. For example, when two sets of lamp beads are installed, one set of the lamp beads can be used as a first state prompt lamp, white lamp beads can be used, the other set of the lamp beads can be used as a second state prompt lamp, and blue lamp beads can be used. Taking the heating of the oven cavity of the microwave oven as an example, when the oven is heating, the first state prompt lamp is turned on, and the second state prompt lamp is turned off, so as to prompt a user that the oven is heating; and after the heating is finished, the first state prompting lamp is turned off, and the second state prompting lamp is turned on for prompting that the heating is finished by the user.

In this scheme, the multiunit the colour of lamp pearl is different, and after the lamp pearl circular telegram, the lamp pearl shows specific colour. The colour of each lamp pearl is confirmed, when using, only needs the lamp plate 40 controls the lamp pearl of specific colour to open and close, only needs be in set up the wire of connecting different lamp pearls on the lamp plate 40, need not set up complicated logic circuit, and control circuit is simple relatively, is difficult to make mistakes.

Because under the state of difference, can carry out operating condition suggestion through the lamp pearl of different colours, the user can audio-visually pass through operating condition is confirmed to the colour of lamp pearl, reminds the user to boil the food progress through lamp pearl light colour change.

With reference to fig. 3, fig. 4 and fig. 5, in the present invention, optionally, an end surface of the diffusion plate 30, which is away from the lamp panel 40, protrudes outward 31; the protrusion 31 is hollow inside to form the cavity 32. When the installation, will the lamp pearl is installed in the cavity 32 at arch 31 middle part, because arch 31 sets up the diffuser plate 30 is outside, the lamp pearl is installed when cavity 32 is inside under arch 31's effect, the light that the lamp pearl produced can pass through cavity 32 with arch 31 shines outside arch 31, help make full use of the light that the lamp pearl produced improves the utilization ratio of light.

Optionally, the protrusions 31 are spherical structures. Being spherical protruding 31 is inside to be set up cavity 32, work as the lamp pearl is arranged in when cavity 32 is inside, the light that the lamp pearl produced can be through being spherical protruding 31 evenly shines diffusion plate 30 is outside, makes to see through protruding 31's light is more even.

In order to facilitate the installation of the diffusion plate 30, according to the present invention, optionally, a lamp holder 20 is disposed on a side of the diffusion plate 30 away from the lamp panel 40; the lamp bracket 20 is provided with a through hole corresponding to the position of the bulge 31; the protrusion 31 is inserted into the through hole and protrudes to the side of the lamp holder 20 facing away from the diffusion plate 30. When the lamp holder is installed, the diffusion plate 30 faces the lamp holder 20, and the diffusion plate 30 faces the lamp panel 40, and is a backlight side, the diffusion plate 30 may be bolted to the lamp holder 20, and when the lamp holder is installed, the lamp holder 20 is fixed to a device to be illuminated, so that the illumination side faces an area to be illuminated, and the backlight side is arranged outside the area to be illuminated, thereby facilitating the line connection of the lamp panel.

Because the arch 31 passes through-hole on the lamp bracket 20 stretches out lamp bracket 20 deviates from diffuser plate 30 one side, when setting up cavity 32 is inside when the lamp pearl circular telegram is luminous, the light that the lamp pearl produced can pass through arch 31 shines in the illumination zone, utilize lamp bracket 20 plays the installation simultaneously when the effect of diffuser plate 30, can not influence the light propagation of lamp pearl.

When the microwave oven is used for lighting in an oven cavity of a microwave oven, in order to avoid microwave leakage, a wave leakage prevention protection plate 50 is optionally arranged between the diffusion plate 30 and the lamp panel 40. The leakage wave preventing protection plate 50 is disposed at a side of the diffusion plate 30 facing away from the lamp holder 20.

Because the lamp support 20 is provided with the through hole for installing the protrusion 31, the leakage wave prevention protection plate 50 is arranged in the scheme, so that the microwave can be prevented from leaking through the through hole in the lamp support 20 when the microwave oven is used for lighting the oven cavity.

When installing during leak protection ripples protection shield 50, can set up line hole 51 on the leak protection ripples protection shield 50, when installing during the lamp pearl, will the lamp pearl pass through the wire with lamp plate 40 is connected, runs through the wire pass through line hole 51. The position of the wire through hole 51 may be staggered with respect to the through hole of the lamp bracket 20.

A wire groove can be arranged on the leakage wave preventing protection plate 50, the lamp beads are connected with the lamp panel 40 through wires, and the wires are arranged in the guide grooves.

Optionally, the leakage wave prevention protection plate 50 is provided with a wire passing hole 51 corresponding to the position of the lamp bead; the lamp beads are connected with the lamp panel 40 through a wire penetrating through the wire passing hole 51. The diameter of the wire through hole 51 can be determined by the wire. Through setting up cross line hole 51, when realizing the effect that prevents the leaky wave, it is convenient the installation of lamp pearl.

In order to improve the illumination intensity, optionally, a cavity top plate 11 is arranged on one side, away from the lamp panel 40, of the lamp support 20; the lamp support 20 is disposed on the cavity top plate 11. Cavity lamp plate 11 is used for the installation lamp support 20 can regard it as the lamp shade to use.

When the installation, will cavity lamp plate 11 is fixed on the microwave oven furnace chamber, arch 31 passes through microwave oven furnace chamber is shone to through-hole on the lamp support 20, cavity roof 11 can play the effect of reflection of light, in order to be used for improving lighting device's illumination intensity and illumination utilization ratio.

Referring to fig. 6 and 7, fig. 6 is a schematic view of a backlight side structure of a microwave oven according to an embodiment of the present invention, and fig. 7 is a schematic view of an illumination side structure of a microwave oven according to an embodiment of the present invention, which provides an embodiment of a microwave oven based on the above-mentioned illumination device, including a microwave oven body 100 and the above-mentioned illumination device; the lighting device is disposed inside the microwave oven body 100, and is used for lighting inside the microwave oven body 100. The lighting device comprises a diffusion plate 30 and a lamp panel 40 provided with lamp beads; a cavity 32 corresponding to the lamp beads is arranged on one side of the diffusion plate 30, which is far away from the lamp panel 40; the beads are inserted into the diffuser plate 30 and embedded in the cavity 32.

The microwave oven body 100 is provided with a mounting hole, and the lighting device is fixed in the mounting hole, so that the lamp beads in the protrusions 31 provide lighting for the oven cavity of the microwave oven body 100.

Referring to fig. 8, fig. 8 is an exploded view of a microwave oven backlight side lighting device according to an embodiment of the present invention, when it is installed, in order to improve the light utilization rate, preferably, one end of the cavity top plate 11 away from the lamp holder 20 is fixed on the microwave oven body 100, and at this time, the lamp holder 20, the diffusion plate and the lamp plate 40 are all located outside the installation hole. After passing through the protrusion 31, the light generated by the lamp bead irradiates the cavity of the microwave oven body 100 under the reflection of the cavity top plate 11.

Because the lamp beads arranged in the cavity 32 emit light, the light emitted by the lamp beads can enter the cavity top plate 11 in a softer manner after passing through the cavity 32, and the light can uniformly enter the microwave oven body 100 after being reflected by the cavity top plate 11. By arranging a plurality of groups of lamp beads with different colors, the working state is indicated by using the different colors of the lamp beads, so that the using state of a user is conveniently prompted; with the multiunit the lamp pearl equipartition is in on the diffuser plate 30 inside the cavity 32, help improving the illumination intensity in the furnace chamber.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A lighting device is used for lighting a microwave oven chamber and is characterized by comprising a diffusion plate and a lamp panel provided with lamp beads;

a cavity corresponding to the lamp beads is arranged on one side, away from the lamp panel, of the diffusion plate, and the end face, away from the lamp panel, of the diffusion plate protrudes outwards; the bulges are hollow so as to form the cavity, and the cavity and the lamp beads are both circular;

the lamp beads are inserted into the diffusion plate and embedded into the cavity;

a lamp bracket is arranged on one side of the diffusion plate, which is far away from the lamp panel;

2. The illumination device of claim 1, wherein the protrusion is a spherical structure.

3. The lighting device as claimed in claim 1, wherein a wave leakage preventing protection plate is provided between the diffusion plate and the lamp panel.

4. The lighting device as claimed in claim 3, wherein the leakage wave preventing protection plate is provided with a through hole corresponding to the position of the lamp bead;

5. The lighting device of claim 1, wherein a cavity ceiling is disposed on a side of the lamp holder facing away from the lamp panel;

the lamp support is arranged on the cavity top plate.

6. The lighting device of claim 1, wherein at least two groups of said beads are provided on said lamp panel;

the colors of the lamp beads in each group are different.

7. The illumination device of claim 1, wherein a plurality of sets of said cavities are provided on said diffuser plate;

the lamp beads are respectively arranged in the plurality of groups of cavities;

8. A microwave oven comprising a microwave oven body and the lighting device as claimed in any one of claims 1 to 7;

the lighting device is arranged on the inner side of the microwave oven body and used for lighting inside the microwave oven body.