Heat preservation dining car

Abstract

The utility model relates to the technical field of railway vehicles, and provides a heat preservation dining car which comprises a heat preservation box, an electric control device and a walking device. A heating assembly and a temperature sensor are arranged in the heat preservation box, the temperature sensor is used for detecting the temperature of the heating assembly and / or the internal temperature of the heat preservation box, a meal taking opening is formed in at least one side of the heat preservation box, and a box door is installed at the meal taking opening. The electric control device is connected with the heat preservation box, electrically connected with the heating assembly and the temperature sensor and used for driving the heating assembly to start and stop and receiving temperature signals fed back by the temperature sensor. The walking device is installed on the lower surface of the heat preservation box. Heat preservation can be conducted on food in the heat preservation box, the heat preservation temperature can be adjusted, and the phenomenon that the taste of the food is affected due to the fact that the food cools in the food selling process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of rail vehicles, in particular to a heat-insulated dining car. Background Art

[0002] With the rapid development of China's rail transit industry, rail vehicles not only solve the problems of transport capacity and power for the country, relieve the pressure of transportation, but also shorten people's travel time and provide convenient services for passengers. Due to the long trunk lines of domestic EMUs, for long-distance passengers, the demand for dining on rail vehicles will also increase accordingly.

[0003] The current mode of food supply in the kitchen of rail vehicles is as follows: flight attendants use a microwave oven to heat the boxed meals and then place the boxed meals on the dining car, and deliver them to each carriage according to the needs of passengers. The dining car with only the moving function will cause the boxed meals to be unable to keep warm during the selling process, which is likely to cause the food to cool down and affect the taste of the food and the dining experience. Content of the Utility Model

[0004] The utility model provides a heat-insulated dining car to solve the technical problem that the existing dining car only has the transportation function and cannot keep the food warm, which is likely to cause the food to cool down and affect the taste of the food and the dining experience, and realizes the heat preservation of food during the selling process.

[0005] The utility model provides a heat-insulated dining car, including:

[0006] A heat-insulated box, internally provided with a heating component and a temperature sensor, the temperature sensor is used to detect the temperature of the heating component and / or the internal temperature of the heat-insulated box, at least one side of the heat-insulated box is formed with a meal-taking opening, and a box door is installed at the meal-taking opening;

[0007] An electric control device, connected to the heat-insulated box, the electric control device is respectively electrically connected to the heating component and the temperature sensor, and is used to drive the start and stop of the heating component and receive the temperature signal fed back by the temperature sensor;

[0008] A traveling device, installed on the lower surface of the heat-insulated box.

[0009] According to a heat-insulated dining car provided by the utility model, the electric control device includes:

[0010] An electric control board, respectively electrically connected to the heating component and the temperature sensor, and is used to drive the start and stop of the heating component and receive the temperature signal fed back by the temperature sensor;

[0011] A plug, used to connect to the mains, and the plug is electrically connected to the electric control board;

[0012] Wherein, a touch screen is provided on the outer surface of the electric control device, and the touch screen is electrically connected to the electric control board, and is used to input the heat preservation temperature to the electric control board and display the temperature of the heating component detected by the temperature sensor and / or the internal temperature of the heat preservation box.

[0013] According to a heat preservation food truck provided by the present utility model, the electric control device further includes:

[0014] A power conversion module, which is used to convert the input power supply of 220V into the power supply for use of 12V, and the power conversion module is electrically connected to the plug and the electric control board respectively.

[0015] According to a heat preservation food truck provided by the present utility model, the heating component includes a first heating plate and a second heating plate. At least one first heating plate is provided on each of the opposite sides inside the heat preservation box, and the second heating plate is provided at the bottom inside the heat preservation box. Each first heating plate corresponds to one temperature sensor;

[0016] The electric control board is provided with a first temperature threshold;

[0017] The electric control board further includes a comparison module, and the comparison module drives the electric control board to control the start and stop of each first heating plate respectively based on the comparison between the temperature signal fed back by the temperature sensor and the first temperature threshold.

[0018] According to a heat preservation food truck provided by the present utility model, the electric control board is provided with a second temperature threshold, and the second temperature threshold is greater than the first temperature threshold;

[0019] Wherein, the comparison module drives the electric control board to control the start and stop of all the first heating plates and the second heating plate based on the comparison between the temperature signal fed back by the temperature sensor and the second temperature threshold.

[0020] According to a heat preservation food truck provided by the present utility model, a blower is provided inside the heat preservation box, and the blower is electrically connected to the electric control device.

[0021] According to a heat preservation food truck provided by the present utility model, a box door sensor for detecting the opening and closing of the box door is provided at the food taking opening, and the box door sensor is electrically connected to the electric control device, and the electric control device controls the start and stop of the blower based on the opening and closing signal fed back by the box door sensor.

[0022] According to a heat preservation food truck provided by the present utility model, at least two partitions are provided at intervals along the height direction inside the heat preservation box, and the partitions are used for placing food.

[0023] According to an insulated food truck provided by the present utility model, the traveling device includes at least three traveling wheels, and self-locking mechanisms are provided on all of the at least three traveling wheels. A linkage mechanism is provided on the lower surface of the insulation box, and the linkage mechanism is in transmission connection with the self-locking mechanisms of the at least three traveling wheels for locking or unlocking the at least three traveling wheels.

[0024] According to an insulated food truck provided by the present utility model, the electric control device is arranged on the upper surface of the insulation box, and a fence is arranged on the periphery of the upper surface of the electric control device for forming a display area above the electric control device.

[0025] The insulated food truck provided by the embodiment of the present utility model places food through the insulation box, uses a heating component to heat the inside of the insulation box so as to keep the food warm, forms a food-taking opening on the insulation box and installs a box door for facilitating taking out food from the insulation box, and uses an electric control device to control the heating component for facilitating setting different heat preservation temperatures according to different foods. The traveling device at the bottom can facilitate the pushing of the insulation box. By using the above structure, not only can the food in the insulation box be kept warm, but also the heat preservation temperature can be adjusted to avoid phenomena such as food cooling during the food selling process, which affects the taste of the food. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0027] Figure 1 is a three-dimensional structural schematic diagram of the insulated food truck provided by the present utility model;

[0028] Figure 2 is a front view of the insulated food truck provided by the present utility model;

[0029] Figure 3 is a side view of the insulated food truck provided by the present utility model;

[0030] Figure 4 is one of the internal structural schematic diagrams of the insulated food truck provided by the present utility model;

[0031] Figure 5 is the other internal structural schematic diagram of the insulated food truck provided by the present utility model;

[0032] Figure 6 is an electrical connection block diagram of the insulated food truck provided by the present utility model.

[0033] Reference Signs:

[0034] 10. Incubator; 110. Heating component; 120. Temperature sensor; 130. Door of the box; 140. Fan; 150. Partition; 20. Electric control device; 210. Plug; 220. Touch screen; 30. Traveling wheels; 40. Linkage mechanism; 50. Fence. Detailed implementation manners

[0035] The following further describes in detail the implementation manners of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0036] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0037] In the description of the embodiments of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "coupled" 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 directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific situations.

[0038] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower horizontal height than the second feature.

[0039] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0040] The following combines Figures 1-6 Describe an embodiment of the present utility model. This embodiment provides a thermal insulation food truck, which mainly includes a thermal insulation box 10, an electric control device 20, and a traveling device. A heating component 110 and a temperature sensor 120 are provided inside the thermal insulation box 10. The temperature sensor 120 is used to detect the temperature of the heating component 110 and / or the internal temperature of the thermal insulation box 10. At least one side of the thermal insulation box 10 is formed with a food-taking opening, and a box door 130 is installed at the food-taking opening. The electric control device 20 is connected to the thermal insulation box 10, and the electric control device 20 is electrically connected to the heating component 110 and the temperature sensor 120 respectively, and is used to drive the heating component 110 to start and stop and receive the temperature signal fed back by the temperature sensor 120. The traveling device is installed on the lower surface of the thermal insulation box 10.

[0041] In this embodiment, food is placed in the thermal insulation box 10, and the heating component 110 is used to heat the inside of the thermal insulation box 10, so as to keep the food warm. A food-taking opening is formed on the thermal insulation box 10 and the box door 130 is installed, so as to facilitate taking out food from the thermal insulation box 10. The electric control device 20 is used to control the heating component 110, so as to set different heat preservation temperatures according to different foods, and the traveling device at the bottom can facilitate the pushing of the thermal insulation box 10. Using the above structure can not only keep the food in the thermal insulation box 10 warm, but also adjust the heat preservation temperature, avoiding phenomena such as food cooling during food sales and affecting the taste of food.

[0042] Among them, food-taking openings are provided on both the front and rear sides of the thermal insulation box 10 along the moving direction of the thermal insulation food truck, and the box door 130 is hinged at the food-taking opening of the thermal insulation box 10, so as to facilitate opening the box door 130 to take food on both the front and rear sides. The box door 130 is a magnetic sealed door, which is convenient for opening and closing the box door 130. A thermal insulation layer is provided inside the thermal insulation box 10, and the thermal insulation layer can adopt polyurethane foam insulation.

[0043] In this embodiment, as Figure 2 and Figure 3As shown in the figure, the electric control device 20 includes an electric control board and a plug 210. The electric control board is electrically connected to the heating component 110 and the temperature sensor 120 respectively, and is used to drive the heating component 110 to start and stop and receive the temperature signal feedback by the temperature sensor 120. The plug 210 is used to connect to the mains power supply, and the plug 210 is electrically connected to the electric control board. Among them, a touch screen 220 is provided on the outer surface of the electric control device 20. The touch screen 220 is electrically connected to the electric control board and is used to input the holding temperature to the electric control board and display the temperature of the heating component 110 detected by the temperature sensor 120 and / or the internal temperature of the incubator 10.

[0044] After the plug 210 is connected to the mains socket, it can supply power to the electric control board. After the electric control board starts to work, it can make the heating component 110, the temperature sensor 120, etc. work. After the heating component 110 is powered on, it can keep the food in the incubator 10 warm. The touch screen 220 can set the holding temperature, for example, set the temperature of the heating component 110 to 60 °C. The touch screen 220 can also display the temperature of the heating component 110 and / or the internal temperature of the incubator 10, which is convenient for the flight attendant to observe the internal temperature.

[0045] The touch screen 220 is roughly a 5-inch display screen. The flight attendant can set the holding temperature on the touch screen 220 according to actual needs, and the human-computer interaction is good.

[0046] The plug 210 is a retractable national standard plug 210. The plug 210 is connected with a section of retractable cable. Insert the plug 210 into the socket, and it can be used immediately. On the basis of enabling the food cart to have the transportation function, its heat preservation effect is realized. It should be noted that due to the limited length of the retractable cable connected to the plug 210, after the thermal insulation food cart moves a certain distance, it is necessary to first unplug the plug 210 and insert the plug 210 at the next socket before continuing to move the thermal insulation food cart, so as to achieve continuous heat preservation. Of course, based on the fact that a heat preservation layer is provided inside the incubator 10, after unplugging the plug 210, it can continue to move forward and sell for a period of time before plugging in the plug 210, as long as it is ensured that the internal temperature of the incubator 10 can meet the heat preservation requirements of the food.

[0047] In another embodiment, a storage battery can also be provided outside the incubator 10. The plug 210 is electrically connected to the storage battery, and the storage battery is electrically connected to the electric control board. After the plug 210 is inserted into the socket, the storage battery can be charged. During the sales process, unplug the plug 210 and use the storage battery to supply power to the electric control board, the heating component 110 and the temperature sensor 120.

[0048] In this embodiment, the electric control device 20 further includes a power conversion module. The power conversion module is used to convert the 220V input power into 12V operating power. The power conversion module is electrically connected to the plug 210 and the electric control board respectively.

[0049] On the one hand, the power conversion module can step down the voltage, and on the other hand, it can convert alternating current into direct current for the convenience of use by the electronic control board.

[0050] In this embodiment, the heating assembly 110 includes a first heating plate and a second heating plate. At least one first heating plate is provided on each of the opposite sides inside the heat preservation box 10, and a second heating plate is provided at the bottom inside the heat preservation box 10. Each first heating plate corresponds to a temperature sensor 120. The electronic control board is provided with a first temperature threshold and a second temperature threshold, and the second temperature threshold is greater than the first temperature threshold. The electronic control board further includes a comparison module. The comparison module drives the electronic control board to control the start and stop of each first heating plate respectively based on the comparison between the temperature signal fed back by the temperature sensor 120 and the first temperature threshold. The comparison module drives the electronic control board to control the start and stop of all the first heating plates and the second heating plate based on the comparison between the temperature signal fed back by the temperature sensor 120 and the second temperature threshold.

[0051] The first temperature threshold is adjustable between 0 - 70 °C. For example, it can be set to 60 °C. When the temperature sensor 120 detects that the heating temperature of the corresponding first heating plate is higher than 60 °C, the electronic control board controls the corresponding first heating plate to stop heating. When the temperature drops below 60 °C, the electronic control board controls the corresponding first heating plate to start heating again. After the temperature is higher than 60 °C, it stops heating again, and this cycle continues.

[0052] The second temperature threshold can be 85 °C. When the temperature sensor 120 detects that the temperature inside the heat preservation box 10 exceeds 85 °C, the electronic control board directly performs power-off protection. At this time, all the first heating plates and the second heating plate lose power so that all the first heating plates and the second heating plate stop working. When the temperature inside the heat preservation box 10 drops to near the first temperature threshold, the electronic control board drives all the first heating plates and the second heating plate to start working.

[0053] Among them, a thermistor can be used to control the on-off of the circuit. When the temperature sensor 120 detects that the temperature inside the heat preservation box 10 is greater than the second temperature threshold, the thermistor disconnects, causing the entire heating circuit to disconnect, so that the first heating plate and the second heating plate stop heating. When the temperature inside the heat preservation box 10 drops, the thermistor conducts again, and the first heating plate and the second heating plate start heating again.

[0054] By setting the first temperature threshold and the second temperature threshold, a double protection is formed to avoid over-temperature phenomena.

[0055] Among them, each first heating plate corresponds to a temperature sensor 120, that is, the first heating plates and the temperature sensors 120 are in one-to-one correspondence. Specifically, two first heating plates are respectively provided on opposite sides of the insulation box 10 perpendicular to the running direction of the food truck, and a temperature sensor 120 is provided at each of the four corners inside the insulation box 10. Each temperature sensor 120 corresponds to a first heating plate. Based on the comparison with the first temperature threshold, each first heating plate can be controlled individually to avoid excessive local temperature inside the box, and this arrangement can also achieve the effect of uniform temperature.

[0056] As Figure 5 shown, a blower 140 is provided inside the insulation box 10, and the blower 140 is electrically connected to the electric control device 20. By cooperating with the heating assembly 110, the blower 140 can form a hot air circulation inside the insulation box 10, which can ensure that the temperature inside the insulation box 10 is relatively uniform. The blowing direction of the blower 140 can be towards the direction of the box door 130, the direction of the food, etc., as long as it can ensure the realization of hot air circulation.

[0057] A box door sensor for detecting the opening and closing of the box door 130 is provided at the meal taking opening, and the box door sensor is electrically connected to the electric control device 20. The electric control device 20 controls the start and stop of the blower 140 based on the opening and closing signals fed back by the box door sensor.

[0058] After the box door 130 is opened, the box door sensor sends a sensing signal indicating that the box door 130 is in the open state to the electric control device 20. At this time, the electric control device 20 will send a control signal to the blower 140 to drive the blower 140 to stop working, which can save electricity and avoid the hot air wave inside the insulation box 10 from hurting people after the box door 130 is opened. After the box door 130 is closed, the box door sensor sends a sensing signal indicating that the box door 130 is in the closed state to the electric control device 20. At this time, the electric control device 20 will send a control signal to the blower 140 to drive the blower 140 to start working, so as to realize hot air circulation inside the insulation box 10.

[0059] As Figure 4 shown, at least two partitions 150 are provided inside the insulation box 10 at intervals in the height direction, and the partitions 150 are used to place food. Specifically, the partitions 150 can divide the inside of the insulation box 10 into multiple storage areas. Each storage area can hold multiple lunch boxes, which is convenient for meal taking and selling. Among them, grooves can be provided on both sides inside the box body, and both sides of the partition 150 can be respectively clamped in the grooves on both sides to fix the position of the partition 150. The partition 150 can also be installed on a frame body, and the frame body is placed inside the insulation box 10, which can also fix the position of the partition 150 inside the insulation box 10.

[0060] In this embodiment, the walking device includes at least three walking wheels 30, and the at least three walking wheels 30 are all provided with a self-locking mechanism. The lower surface of the insulated box 10 is provided with a linkage mechanism 40, and the linkage mechanism 40 is transmission-connected to the self-locking mechanism of the at least three walking wheels 30, and is used to lock or unlock the at least three walking wheels 30.

[0061] Specifically, the running wheel 30 is a universal wheel, and the universal wheel has a self-locking mechanism for locking the universal wheel so that the position of the insulated box 10 is fixed, which is convenient for parking to sell food. The linkage mechanism 40 is used to drive the self-locking mechanism of the universal wheel to lock or unlock the universal wheel, so as to achieve one-button braking, which is convenient for the crew to operate.

[0062] like Figure 1 As shown, there are four running wheels 30, and the incubator 10 is a rectangular box, and the four running wheels 30 are respectively arranged at the four corners of the lower surface of the incubator 10. The linkage mechanism 40 includes at least a pedal and a transmission member, and the pedal is rotatably arranged on the lower surface of the incubator 10, and the pedal is connected to the self-locking mechanism of the running wheel 30 through the transmission member. After the crew steps on the pedal, the self-locking mechanism is driven by the transmission member to lock or unlock the four running wheels 30 at the same time. Exemplarily, the transmission member is a pull rope, the middle part of the pedal is rotatably connected to the incubator 10, one side of the pedal is used for stepping, and the other side of the pedal is connected to four pull ropes, and the four pull ropes are respectively connected to the self-locking mechanisms of the four running wheels 30. When the pedal is stepped on, the pedal pulls the pull rope to drive the self-locking mechanism. Among them, a through-channel is provided on the lower surface of the incubator 10, and the pull rope is connected to the self-locking mechanism of the running wheel 30 after passing through the through-channel, and a reset mechanism is provided at the through-channel to facilitate driving the pull rope and the self-locking mechanism to reset. Of course, the transmission member can also use gear transmission, worm gear transmission and other methods to drive the self-locking mechanism.

[0063] like Figure 1 As shown, the electric control device 20 is arranged on the upper surface of the insulated box 10, and a fence 50 is arranged around the upper surface of the electric control device 20 to form a display area above the electric control device 20. The display area is used for food display, and the food and beverage goods sold can be displayed to passengers. The fence 50 is arranged to block the food and prevent the food from falling from the upper surface of the electric control device 20. The fence 50 can be fixed to the upper surface of the electric control device 20 by bolt connection or clamping.

[0064] The power plug 210 can be connected to the power conversion module after being connected to the circuit breaker, and the power conversion module can be connected to the electric control board to supply power to it. Among them, the temperature sensor 120, the fan 140, and the heating component 110 are respectively electrically connected to the electric control board to realize power supply to each component.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A thermal insulation food truck, characterized in that, include: An insulated box, wherein a heating component and a temperature sensor are provided inside, wherein the temperature sensor is used to detect the temperature of the heating component and / or the internal temperature of the insulated box, and a food taking opening is formed on at least one side of the insulated box, wherein a box door is installed at the food taking opening; An electric control device connected to the incubator, the electric control device being electrically connected to the heating component and the temperature sensor respectively, and being used to drive the heating component to start and stop and receive a temperature signal fed back by the temperature sensor; A walking device, mounted on the lower surface of the incubator; The walking device includes at least three walking wheels, and the at least three walking wheels are all provided with a self-locking mechanism. The lower surface of the insulated box is provided with a linkage mechanism, and the linkage mechanism is transmission-connected with the self-locking mechanism of the at least three walking wheels for locking or unlocking the at least three walking wheels.

2. The heat-insulating food truck according to claim 1, wherein The electronic control device comprises: An electric control board, electrically connected to the heating component and the temperature sensor, respectively, for driving the heating component to start and stop and receiving a temperature signal fed back by the temperature sensor; A plug, used to connect to the mains, the plug being electrically connected to the electric control board; Among them, a touch screen is provided on the outer surface of the electric control device, and the touch screen is electrically connected to the electric control board for inputting the insulation temperature to the electric control board and displaying the temperature of the heating component detected by the temperature sensor and / or the internal temperature of the insulation box.

3. The heat-insulated dining vehicle according to claim 2, wherein The electronic control device further comprises: The power conversion module is used to convert the 220V input power into a 12V usable power, and the power conversion module is electrically connected to the plug and the electric control board respectively.

4. The heat-insulated food truck according to claim 2, wherein The heating assembly comprises a first heating plate and a second heating plate, at least one of the first heating plates is respectively arranged on opposite sides of the heat preservation box, the second heating plate is arranged on the bottom of the heat preservation box, and each of the first heating plates corresponds to one of the temperature sensors; The electric control board is provided with a first temperature threshold; The electric control board further includes a comparison module, which drives the electric control board to control the start and stop of each of the first heating plates based on a comparison between the temperature signal fed back by the temperature sensor and the first temperature threshold.

5. The heat-insulated food truck according to claim 4, characterized in that, The electric control board is provided with a second temperature threshold, and the second temperature threshold is greater than the first temperature threshold; The comparison module drives the electric control board to control the start and stop of all the first heating plates and the second heating plates based on the comparison between the temperature signal fed back by the temperature sensor and the second temperature threshold.

6. The heat-insulated dining car according to any one of claims 1-5, characterized in that, A fan is arranged in the heat preservation box, and the fan is electrically connected to the electric control device.

7. The heat-insulated dining car according to claim 6, wherein, A door sensor for detecting the opening and closing of the door is provided at the food taking port. The door sensor is electrically connected to the electronic control device. The electronic control device controls the start and stop of the fan based on the opening and closing signal fed back by the door sensor.

8. The insulated food truck according to claim 6, wherein At least two partitions are arranged in the heat preservation box at intervals along the height direction, and the partitions are used for placing food.

9. The heat-insulated food truck according to any one of claims 1-5, characterized in that, The electric control device is arranged on the upper surface of the heat preservation box, and a fence is arranged around the upper surface of the electric control device to form a display area above the electric control device.

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