TWM554547U - Gas stove knob luminescent with full beam angle - Google Patents

Abstract

The present invention is a full-view illumination knob of a gas stove, comprising a base, a circuit board and a light guide ring respectively fixed around the outer periphery of the gas valve shaft of the stove panel, and a rotation fixed on the rotating shaft to adjust the firepower Knob cover. Wherein, a plurality of LEDs arranged in a circular full-angle view are arranged on the periphery of the circuit board, and a power switch and a controller capable of receiving a fire-power signal are arranged in the inner circumference. When the knob cover rotates to adjust the fire power, the power switch turns on the power to make the circuit The controller on the board can cause a plurality of LEDs to emit light according to the firepower size signal, so that the user intuitively recognizes the firepower by the number of LEDs, thereby achieving convenient use.

Description

Full-angle illumination knob for gas stove

This creation is a component related to a gas stove, especially an illumination knob for the user to adjust the amount of fire. When the user rotates the knob cover, most of the LEDs can be surrounded by the full view angle around the knob cover. The amount of illumination, intuitively identifies the size of the fire.

The conventional gas stove is provided with a thermocouple solenoid valve electrically connected to the gas valve at the mouth of the furnace. When the user uses the knob to ignite the fire, the thermocouple solenoid valve is heated to open the gas valve, thereby enabling the gas valve to After normal operation, use the knob to adjust the opening of the gas valve to adjust the firepower.

Among them, the knob used to adjust the firepower does not have the firepower indication, and if the ignition fails or the thermocouple solenoid valve is not heated enough to open the gas valve, the user can only bend down and observe, or the position and angle of the knob Roughly assessing firepower, this way of relying only on experience to judge the size of firepower or whether the fire is ignited is not only inconvenient but also inaccurate. Therefore, many operators have designed lighting knobs for this lack, in order to allow users to pass A lighted knob to identify the amount of firepower.

To allow the user to identify the amount of firepower through the illuminating knob, the problems that need to be addressed in the design of the knob include how to detect the amount of firepower and how to make the knob provide different indications depending on the amount of firepower. In the existing technology, CN205162843U, CN203200560U, CN201016484Y, CN204100314U and other patent cases, respectively, reveal a knob structure similar to the light-emitting indicator light, but among them, the light-emitting structure of CN205162843U is prone to the problem of twisting and breaking of the line when the knob is rotated; CN203200560U It mainly shows whether the power of the electric iron is turned on, and it is not suitable for use with gas stoves. Although CN201016484Y and CN204100314U are applied to the knob of the stove, the indicator of CN204100314U is mainly based on whether the display knob is activated, not the size of the fire. CN201016484Y is designed for the power conduction structure, and still does not solve the problem of indicating the size of the fire.

The inventor of the present invention has also designed many solutions to the above problems, including M531555, CN205897241 U, M537645, CN206094187 U, M537647, CN206257705 U, M547080, etc., the technical content designed by the inventor described above can be achieved after actual implementation. Detecting the size of the firepower and allowing the knob to provide different indications with the amount of firepower. However, if the knob provides different indications with the size of the firepower, if the user can more intuitively identify the firepower, it will be able to Greatly improve the convenience of use.

In addition, when using the gas stove to cook the ingredients, the user often uses an additional timer to control the cooking time by using the reminder function of the timer. If a timer can be additionally provided on the knob for the user. Set the cooking time, turn off the gas valve when the set time is up, and send out a light to remind the user, which will greatly improve the convenience of the gas stove.

The purpose of the present invention is to provide a full-view illumination knob for a gas stove, which is mainly provided with a plurality of LEDs capable of emitting light with a corresponding amount according to the size of the firepower, and the plurality of LEDs are arranged in a circular full-angle view, so that the user can The amount of LED illumination intuitively identifies the size of the firepower and achieves ease of use.

In order to achieve the above object, the present invention is a full-view illumination knob of a gas stove having a gas valve shaft exposed in the center of a panel mounting hole thereof, the illumination knob comprising: a fixed to the panel a base of the top or bottom surface relative to the outer peripheral position of the rotating shaft, a circuit board fixed to the base, a light guiding ring disposed above the circuit board, and a rotating or fixed inner and outer circumference of the light guiding ring and capable of rotating Adjusting the size of the knob cover; wherein: the outer ring of the circuit board is provided with a plurality of LEDs arranged in a circular full-angle view at a position below the light guide ring, and a power switch is arranged at the inner circumference of the plurality of LEDs, and a power switch can be received The controller of the firepower signal, the light guide ring is annular and covers the upper of the plurality of LEDs, so that the plurality of LEDs transmit light upward through the light guide ring, and the power switch rotates on the knob cover and the rotating shaft to open the gas valve and Turn on the power when adjusting the firepower, so that the controller on the board can make the majority of the LEDs shine in a corresponding amount according to the firepower signal. flicker.

The implementation of each component is further described below:

In implementation, the controller signal of the circuit board is connected to a sensor fixed on the gas pipe of the gas stove, and the sensor can detect the gas flow or pressure in the gas pipe to form a corresponding firepower signal to be transmitted to the Controller.

In implementation, the power switch includes a magnetic switch fixed on the circuit board, and a first magnet fixed to the knob cover for synchronous rotation, the first magnet being rotated when the knob cover is rotated to close the gas valve The magnetic switch is aligned to turn off the power of the magnetic switch; the first magnet is misaligned with the magnetic switch when the knob cover is rotated to open the gas valve, so that the magnetic switch is powered on and supplied to the circuit board.

In implementation, the magnetic switch is an open-circuit type reed switch, and the base is fixed at a relative position of the reed tube with a second magnet that constantly acts magnetically on the reed tube; the first magnet rotates on the knob cover to When the reed tube and the second magnet are aligned, the magnetic action of the first magnet and the second magnet cancel each other, so that the reed switch is kept open to turn off the power; the first magnet is rotated to the magnetic When the reed pipe and the second magnet are misaligned, the reed pipe receives the magnetic action of the second magnet to turn on and turn on the power.

In implementation, the light guide ring is provided with a decorative window capable of displaying a graphic, text, power indication or abnormal warning light at a position above one of the LEDs.

In practice, the light guiding ring is provided with a transparent window above a gap of the plurality of LEDs, and the circuit board further comprises a time setting button and a light emitting digital tube or a backlit display screen at a position below the transparent window. The timing module, wherein the time setting button is a photocoupler switch that can be touched by receiving a light change through a transparent window, and the timing module is electrically connected to the controller, and controls the controller to control all or Some LEDs give a warning light.

In implementation, the controller is electrically connected to a thermocouple solenoid valve located at the mouth of the gas stove, and the timing module outputs a reverse voltage through the controller to close the thermocouple solenoid valve, thereby making the gas valve The flameout is turned off, and the controller sends a warning light to all or part of the LEDs after receiving the firepower off signal.

In practice, the base is fixed in a disc shape on the top surface of the stove panel, and a punching hole is formed in the center for the rotating shaft, and the surrounding ring is provided with a short protruding edge protruding upward, and the circuit board is fixed on the short convex edge The inner circumference of the light guide ring is supported by the upper and lower sides of the light guide ring, and the inner edge of the light guide ring extends below the knob cover.

In practice, the base is fixed in a cylindrical shape on the top surface of the stove panel, and a punching hole is formed in the center for the rotating shaft, and the surrounding ring is provided with a long protruding edge protruding upward, and the circuit board is erected and fixed on the long convex A plurality of LEDs are disposed on the inner periphery of the top surface of the annular cover, and the light transmission portion is located above the light guide ring. The plurality of LEDs are disposed above the periphery of the knob cover. When the light is emitted, the light passes through the light guide ring and the light transmitting portion and then passes out.

When implemented, the stove panel is a light-transmissive glass panel, and the base is disposed under the stove panel, and extends upwardly to a holding portion fixed in the inner circumference of the mounting hole, and a waterproof rubber sleeve is disposed above the holding portion for the rotating shaft And the knob cover is disposed above the waterproof rubber sleeve; the circuit board and the light guiding ring are disposed between the base and the oven panel, and when the plurality of LEDs emit light, the light passes through the light guiding ring and the stove panel and is upwardly reflected .

Compared with the prior art, in the full-view illumination knob of the gas stove of the present invention, most of the LEDs are arranged in a circular full-angle view, and the reasonable arrangement of the base, the circuit board and the light guide ring allows the majority of the LEDs to follow The firepower is illuminated by the corresponding amount, so that the user can intuitively recognize the firepower by the amount of light emitted by the LED, and achieve the convenience of use; in addition, the time setting button for timing and the LED or the backlit display are provided. The implementation method not only allows the user to use a timer, but also sends a warning light through a plurality of LEDs to remind the cooking time and achieve convenient use.

In the following, according to the technical means of the creation, the implementation method suitable for the creation is listed, and the description is as follows:

As shown in the first figure, the full-view light-emitting knob of the present invention is mounted on the panel 101 of the gas stove 100. The panel 101 of the gas stove 100 has a mounting hole 102, and a central portion of the mounting hole 102 is exposed. The rotating shaft 104 of the opening of the gas valve 103 can be controlled on the panel 101. The gas valve 103 is in communication with the gas pipe 105, and the gas pipe 105 is provided with a sensor 106. When the rotating shaft 104 rotates and opens the gas valve 103, the sensor 106 can detect the gas flow or pressure in the gas tube 105, and form a corresponding firepower signal output.

In the first figure, the furnace of the gas stove 100 is further provided with a thermocouple solenoid valve 107, which is opened after being heated to a suitable temperature, so that the gas valve 103 can work normally; if the thermocouple is electromagnetic When the valve 107 is closed due to insufficient heat or abnormal flameout, the gas valve 103 can be closed. The thermocouple solenoid valve 107 is a conventional safety mechanism of the gas stove 100, and will not be further described herein.

As shown in the second figure, the light-emitting knob of the present invention includes: a base 10 fixed to a top surface or a bottom surface of the panel 101 relative to an outer circumference of the rotating shaft 104, a circuit board 20 fixed on the base 10, and a A light guide ring 30 above the circuit board 20, and a knob cover 40 fixed to the rotating shaft 104 and capable of rotating relative to the base 10, the circuit board 20 and the light guiding ring 30 to adjust the firepower.

Referring to the second and third figures, the base 10 is exemplified by being fixed on the top surface of the panel 101, and the base 10 is fixed in a circular shape on the top surface of the stove panel 101, and a central portion is provided for The through hole 11 is formed by the rotating shaft 104. The surrounding ring is provided with a short protruding edge 12 protruding upward, and the circuit board 20 is fixed to the inner circumference of the short protruding edge 12. In the figure, the outer ring of the circuit board 20 is provided with a plurality of LEDs 21 arranged in a ring-shaped full view, and the circuit board 20 is provided with a power switch 22 at the inner circumference of the plurality of LEDs 21, and can receive the output of the sensor 106. The controller of the firepower size signal 23.

The light guide ring 30 is annular and covers the plurality of LEDs 21, and the light guide ring 30 is held up and down and covered over the short ledge 12 so that the plurality of LEDs 21 can pass upward through the light guide ring 30. The inner edge of the light guide ring 30 extends below the knob cover 40. When the gas stove cooks food, the light guide ring 30 and the knob cover 40 are shielded to prevent oil or water from splashing onto the circuit board 20. A waterproof function is achieved; in the illustration, the light guide ring 30 is provided with a decorative window 31 capable of displaying a graphic, a character, a power indication or an abnormal warning light at a position above the one of the LEDs 21. In addition, the illumination mode of the plurality of LEDs can be set to be long bright or dynamic to enhance the light emitting display capability.

The power switch 22 includes a magnetic switch 221 fixed to the circuit board 20, and a first magnet 222 fixed to the knob cover 40 for synchronous rotation; as shown in the fourth and fifth figures, the first magnet 222 is aligned with the magnetic switch 221 when the knob cover 40 is rotated to close the gas valve. The magnetic action of the magnetic switch 221 by the first magnet 222 enables the magnetic switch 221 to be powered off; when the first magnet 222 is on the knob When the cover 40 is rotated to open the gas valve, the magnetic switch 221 is misaligned, and the magnetic switch 221 is turned on to supply the power required for the operation of the circuit board 20.

In order to facilitate the manufacture and installation, the above-mentioned magnetic switch 221 adopts a common open-circuit type reed switch, and a second permanent magnetism to the magnetic switch 221 is fixed at a position of the base 10 relative to the magnetic switch 221 (reed switch). The magnet 223 causes the magnetic switch 221 to constantly receive the magnetic action of the second magnet 223 and maintain the conductive state without any external force.

When the first magnet 222 is aligned with the magnetic switch 221 and the second magnet 223 when the knob cover 40 is rotated to close the gas valve, the magnetic action of the first magnet 222 and the second magnet 223 cancel each other, so that the magnetic switch The magnetic switch 221 is returned to the constant receiving second magnet 223 when the magnetic switch 221 and the second magnet 223 are misaligned when the first magnet 222 is rotated to open the gas valve. The magnetic action turns on and turns on the power state. That is, as long as the knob cover 40 is rotated away from the closed position, the circuit board 20 can obtain the power required for operation.

In this manner, when the knob cover 40 and the rotating shaft 104 rotate to open the gas valve 103 and adjust the amount of firepower, the power switch 22 turns on the power, so that the controller 23 on the circuit board 20 can receive the firepower signal output by the sensor 106, and The majority of the LEDs 21 are illuminated in corresponding amounts.

For example, the sixth figure discloses that the knob cover 40 is in a closed state at 0 degrees. At this time, the power switch 22 of the circuit board 20 is turned off, and the LED 21 is kept off; the seventh figure shows that the power of the knob cover 40 is 90 degrees, and the maximum power is Fire, at this time LED21 is fully illuminated; the eighth figure reveals that the knob cover 40 is rotated to 175 degrees for the inner ring small fire, at this time only a single LED 21 is illuminated; the ninth figure reveals that the knob cover 40 is rotated to 40 degrees The fire is too small, only about one-half of the LEDs 21 are illuminated; the tenth figure shows that one of the LEDs 21 displays a graphic, text or power indication through the decorative window 31 when the knob cover 40 is rotated.

Thereby, when the knob cover 40 and the rotating shaft 104 are rotated to open the gas valve 103, the greater the heating power, the more the LED 21 emits light; the smaller the firepower, the less the number of LEDs emitting light. As mentioned above, the way in which the LED 21 emits light can be set to be long bright or dynamic to enhance the light emitting display capability. Since a plurality of LEDs 21 are arranged in a circular full-angle view and are designed by a reasonable arrangement of the base 10, the circuit board 20 and the light guide ring 30, the user can intuitively recognize the firepower by the number of LEDs, thereby achieving convenient use.

As shown in the eleventh and twelfth drawings, the second embodiment of the present invention differs from the previous embodiment in that the light guiding ring 30 is disposed above a gap of the plurality of LEDs 21 There is a transparent window 32. The circuit board 20 further defines a timing module electrically connected to the controller 23 at a position below the transparent window 32. The timing module is displayed by a group of LEDs or backlights. The screen 24 is composed of two time setting keys 25, wherein the time setting key 25 is a photocoupler switch that receives the change of the light, so that the user can set the cooking time by touching the time setting key 25 through the transparent window 32, and Displaying and counting down on the illuminated digital tube or the backlit display 24; when the illuminated digital tube or the backlit display 24 displays the end of the timer, the controller 23 controls all or a portion of the LEDs 21 to emit warning lights, such as flashing or other color lights, to Remind users that cooking time is sufficient.

As shown in the thirteenth embodiment, the controller 23 is further electrically connected to the thermocouple solenoid valve 107 located at the mouth of the gas stove 100. When the timing module is finished, the controller 23 issues a The reverse voltage causes the thermocouple solenoid valve 107 to close, thereby causing the gas valve 103 to be closed and extinguished; at this time, the controller 23 receives the fire signal output from the sensor 106 to the off state, but the power switch 22 of the circuit board 20 remains In the state in which the power is turned on (refer to FIG. 5), the controller 23 can cause all or a part of the LEDs 21 to emit a warning light as described above to remind the user that the set cooking time has ended.

As shown in the fourteenth and fifteenth drawings, the third embodiment of the present invention differs in that the base 10 is fixed in a cylindrical shape on the top surface of the stove panel 101, and a shaft is provided in the center thereof. The through hole 11 is formed, and the peripheral ring is provided with a long protruding edge 13 protruding upwardly. The circuit board 20 is erected and fixed on the long protruding edge 13 , and the periphery of the knob cover 40 extends downwardly to cover the long convex edge 13 . The outer peripheral annular cover 41 is provided with a light transmitting portion 42 on the inner peripheral edge of the top surface of the annular cover 41. The light transmitting portion 42 is located above the light guiding ring 30, so that when the plurality of LEDs 21 emit light, the light passes through the light guiding ring 30 and the through light The light portion 42 is then vented to form a state in which the outer periphery of the knob cover 40 emits light.

As shown in the sixteenth and seventeenth embodiments, the fourth embodiment of the present invention is different in that the stove panel 101 is a light-transmissive glass panel, and the base 10 is disposed under the stove panel 101. And extending upwardly, a holding portion 14 fixed in the inner side of the mounting hole 102, a waterproof rubber sleeve 15 is disposed above the holding portion 14 for the rotating shaft 104 to pass out, and the knob cover 40 is shielded above the waterproof rubber sleeve 15 to achieve waterproof effect. . In addition, the circuit board 20 and the light guide ring 30 are disposed between the base and the oven panel 101. When the plurality of LEDs 21 emit light, the light passes through the light guide ring 30 and the oven panel 101 and then passes upward.

The description and illustration of the above embodiments are merely illustrative of preferred embodiments of the present invention, and are not intended to limit the present invention; any similar or identical constructions, devices, features, etc. of the present invention should belong to the present invention. The scope of protection, I hereby declare.

100‧‧‧ gas stove
101‧‧‧ panel
102‧‧‧Installation holes
103‧‧‧ gas valve
104‧‧‧ shaft
105‧‧‧ Gas tube
106‧‧‧ Sensor
107‧‧‧ thermocouple solenoid valve
10‧‧‧Base
11‧‧‧Perforation
12‧‧‧Short edge
13‧‧‧Long convex edge
14‧‧‧Card Department
15‧‧‧Waterproof rubber sleeve
20‧‧‧ boards
21‧‧‧LED
22‧‧‧Power switch
221‧‧‧Magnetic switch
222‧‧‧First magnet
223‧‧‧second magnet
23‧‧‧ Controller
24‧‧‧Light digital tube or backlit display
25‧‧‧Time setting button
30‧‧‧Lighting ring
31‧‧‧Decorative windows
32‧‧‧Transparent window
40‧‧‧ knob cover
41‧‧‧ ring cover
42‧‧‧Transmission Department

The first picture: a schematic diagram of the location of the creation. Second figure: an exploded perspective view of the structure of the first embodiment of the present creation. Third figure: A schematic diagram of the combination of the second figure. The fourth picture: the schematic diagram of the power switch of this author is turned off. Figure 5: Schematic diagram of the power switch of the author. Figure 6: Schematic diagram of the position of the creation knob at 0 degrees. Figure 7: Schematic diagram of the position of the creation knob at 90 degrees. Figure 8: Schematic diagram of the position of the creation knob at 175 degrees. Figure IX: Schematic diagram of the position of the creation knob at 40 degrees. Figure 10: This creation shows a schematic diagram of graphics, text or power instructions. Eleventh drawing: An exploded perspective view of a second embodiment of the present creation. Twelfth Diagram: A schematic diagram of the combination of the second embodiment of the present creation. Thirteenth figure: Schematic diagram of the implementation of the creation timing module. Fig. 14 is an exploded perspective view showing the third embodiment of the present creation. Fifteenth Diagram: A schematic diagram of the combination of the third embodiment of the present creation. Fig. 16 is an exploded perspective view showing the fourth embodiment of the present creation. Figure 17 is a schematic diagram of the combination of the fourth embodiment of the present creation.

100‧‧‧ gas stove

101‧‧‧ panel

102‧‧‧Installation holes

103‧‧‧ gas valve

104‧‧‧ shaft

105‧‧‧ Gas tube

106‧‧‧ Sensor

107‧‧‧ thermocouple solenoid valve

10‧‧‧Base

20‧‧‧ boards

21‧‧‧LED

30‧‧‧Lighting ring

40‧‧‧ knob cover

Claims (10)

A full-view illumination knob for a gas stove, the gas stove having a gas valve shaft exposed at a center of a panel mounting hole thereof, the illumination knob comprising: a fixed top surface or a bottom surface of the panel relative to the shaft a base at a peripheral position, a circuit board fixed to the base, a light guide ring disposed above the circuit board, and a knob cover disposed on the inner circumference or the inner circumference of the light guide ring and fixed to the rotation shaft to be capable of rotating and adjusting the firepower; The outer ring of the circuit board is provided with a plurality of LEDs arranged in a circular full-angle view at a position below the light guide ring, and a power switch and a controller capable of receiving a fire-power signal are disposed at the inner circumference of the plurality of LEDs. The light guiding ring is annular and covers the upper part of the LED, so that the plurality of LEDs transmit light upward through the light guiding ring. The power switch turns on the power when the knob cover and the rotating shaft rotate to open the gas valve and adjust the firepower. The controller on the circuit board can enable a plurality of LEDs to illuminate or flash in a corresponding amount according to the firepower level signal. The full-view illumination knob of the gas stove of claim 1 is characterized in that: the controller signal of the circuit board is connected to a sensor fixed on the gas tube of the gas stove, the sensor can detect the inside of the gas tube After the gas flow or pressure, a corresponding firepower level signal is transmitted to the controller. The full-view illumination knob of the gas stove of claim 1, wherein the power switch comprises a magnetic switch fixed on the circuit board, and a first magnet fixed to the knob cover for synchronous rotation. The first magnet is aligned with the magnetic switch when the knob cover is rotated to close the gas valve, so that the magnetic switch is turned off; the first magnet is misaligned with the magnetic switch when the knob cover is rotated to open the gas valve, so that the magnetic The switch turns on the power and supplies it to the board. The full-view illumination knob of the gas stove according to claim 3, wherein the magnetic switch is an open-circuit type reed switch, and the base is fixed at a relative position of the reed tube to have a constant generation of the reed tube. a magnetic second magnet; when the first magnet is rotated to align with the reed tube and the second magnet, magnetic effects of the first magnet and the second magnet cancel each other to keep the reed tube open And turning off the power; when the first magnet rotates to be dislocated from the reed switch and the second magnet, the reed tube receives the magnetic action of the second magnet to turn on and turn on the power. The full-view illumination knob of the gas stove of claim 1 is characterized in that: the light guide ring is provided with a decoration capable of displaying graphics, characters, power indications or abnormal warning lights at a position above one of the LEDs. window. The full-view illumination knob of the gas stove of claim 1, wherein the light guide ring is provided with a transparent window above a gap of the plurality of LEDs, and the circuit board is located below the transparent window. Further, a timing module composed of a time setting button and a light emitting digital tube or a backlit display screen is further provided, wherein the time setting button of the timing module is a photocoupler switch that can be touched by receiving a light change through a transparent window, and the The timing module is electrically coupled to the controller and causes the controller to control all or a portion of the LEDs to emit an alert light at the end of the timing. The full-view illumination knob of the gas stove of claim 6 is characterized in that: the controller is electrically connected to a thermocouple solenoid valve located at the mouth of the gas stove, and the timing module passes the controller at the end of timing A reverse voltage is issued to turn off the thermocouple solenoid valve, thereby turning off the gas valve, and the controller receives a fire power off signal to cause all or part of the LEDs to emit a warning light. The full-view illumination knob of the gas stove of any one of claims 1 to 7, wherein the base is fixed in a disk shape on the top surface of the stove panel, and a center is provided with a shaft for the shaft to pass through. Perforation, the surrounding ring is provided with a short protruding edge protruding upwardly, the circuit board is fixed on the inner circumference of the short convex edge, the light guiding ring is held from top to bottom and covered and shielded above the short convex edge, and the guiding The inner edge of the halo extends below the knob cover. The full-view illumination knob of the gas stove of any one of claims 1 to 7, wherein the base is fixed in a cylindrical shape on a top surface of the stove panel, and a center is provided with a shaft for the shaft to pass through. Perforation, the surrounding ring is provided with an upwardly protruding long convex edge, the circuit board is erected and fixed above the long convex edge, and the outer periphery of the knob cover extends downwardly with an annular cover that is shielded from the outer periphery of the long convex edge, the annular cover top The inner peripheral edge of the surface is provided with a light transmitting portion, and the light transmitting portion is located above the light guiding ring. When the plurality of LEDs emit light, the light passes through the light guiding ring and the light transmitting portion to be transparent. The full-view light-emitting knob of the gas stove of any one of claims 1 to 7, wherein the stove panel is a light-transmissive glass panel, the base is disposed under the stove panel and extends upward. a retaining portion fixed in the inner circumference of the mounting hole, a waterproof rubber sleeve is disposed above the retaining portion for the rotating shaft to pass through, and the knob cover is shielded above the waterproof rubber sleeve; the circuit board and the light guiding ring are disposed on the base and the stove panel When the plurality of LEDs emit light, the light passes through the light guide ring and the oven panel and then passes upward.