Abstract: Described are storage and dispensing systems and related methods, for the selective dispensing germane (GeH4) as a reagent gas from a vessel in which the germane is held in sorptive relationship to a solid adsorbent medium that includes a zeolitic imidazolate framework.

Abstract: The present invention provides a means to prevent the clogging of pipes by freezing of gas discharged from a fermenter, especially in a low temperature environment such as in winter. Disclosed is an organic compound production system (10A) for producing an organic compound by microbial fermentation, including: a catalytic reactor (1) comprising a reactor containing a biocatalyst for synthesizing an organic compound; a valve (3) for discharging exhaust gas withdrawn from the catalytic reactor (1); and a pipe (6A) connecting the catalytic reactor (1) and the valve (3), wherein at least a part of the pipe (6A) is covered with an insulator (4).

Abstract: A hydrocarbon leak detecting device includes a position securing strap, one or more hydrocarbon sensors, and one or more light sources. The position securing strap may include a locking mechanism configured to secure the position securing strap. The one or more hydrocarbon sensors may be positioned along one or more strap faces of the position securing strap. The one or more light sources may be positioned along the one or more strap faces of the position securing strap. The one or more hydrocarbon sensors may be communicatively coupled to the one or more light sources. A method of detecting a hydrocarbon leak may include securing a position securing strap of a hydrocarbon leak detecting device to a test site, performing one or more sensor measurements using the one or more hydrocarbon sensors, and illuminating the one or more light sources based on the one or more sensor measurements.

Abstract: Examples of the present disclosure disclose an LED light distribution structure, a light source module and a lamp. The LED light distribution structure includes a ring-shaped light distribution element and a plurality of LED chips; the ring-shaped light distribution element is provided with a light source cavity in a ring shape, and the light source cavity has a ring center and a center line surrounding the ring center in a ring shape; the plurality of LED chips are arranged in a ring shape in the light source cavity, each of the LED chips includes an LED and a chip substrate, and the LED is on the chip substrate; and LEDs on all the LED chips are uniformly arranged along a ring-shaped wiring line, the ring-shaped wiring line is in a concentric ring with the center line, and the ring-shaped wiring line is located inside or outside of the center line.

Abstract: An LED tube lamp comprises: a glass lamp tube; a light diffusion layer disposed on a surface of the glass lamp tube; an LED light strip, which comprises a fixing portion and an extending portion disposed in the glass lamp tube; a plurality of LED light sources mounted on the fixing portion of the LED light strip; a fixing structure disposed between the fixing portion and the inner circumferential surface the glass lamp tube; a power supply module disposed on the fixing structure and electrically connecting to the LED light strip and two end caps attached to two ends of the glass lamp tube respectively. The fixing structure comprises a first end fixedly connected to the inner circumferential surface of the glass lamp tube and a second end fixedly connected to the fixing portion of the LED light strip and not connected to the extending portion of the LED light strip.

Abstract: The disclosure relates in general to illuminated panels resembling windows, and more particularly, to a system containing a light source, a diffuser and a panel combined in such a fashion as to resemble a window, skylight or curtain wall.

Abstract: A lighting apparatus with a linear light source is provided. The lighting apparatus includes a light source extending in a longitudinal direction and having terminal parts on both ends of the light source to be connected to a power supply; a spacer having an internal space that is opened in a front-rear direction and accommodates the light source, wherein mounting parts formed on both ends of the internal space to provide the terminal parts; and a reflective bracket mounted on a rear end of the spacer to cover the internal space, and having fixing parts that match the mounting parts to fix the terminal parts when the reflective bracket is mounted on the spacer, wherein an inner surface of the reflective bracket is configured to reflect light emitted from the light source.

Abstract: A solar simulator has an array of light sources including LED light sources and at least one non-LED light source. At least a portion of the infrared-light wavelength range covered by the solar simulator is covered only by the non-LED light source More than 50% of the irradiance provided by the solar simulator is provided by the LED light sources. Application to artificially recreate sunlight in a solar testing device for the testing of solar cells, sun screens, and other products.

Abstract: A lighting system configured for daylight emulation. The system includes a plurality of light sources for generating a daylight-emulating output light spectrum. The system also includes a controller for dynamically controlling at least one of the intensity, directionality and color temperature to emulate sun position for at least one of a geography and time of day. The system further includes a networking facility that facilitates data communication with at least one external resource.

Abstract: Methods, systems and devices associated with an electronic candle are disclosed. In one example aspect, an electronic candle includes a mounting frame that includes a first connector and a power supply assembly that is detachable from the mounting frame. The power supply assembly includes a second connector that forms a coupling mechanism with the first connector. The power supply assembly further includes an energy storage, a first power source configured to charge the energy storage, and an electrical connection interface configured to connect the power supply assembly to a second power source. The electronic candle also includes a light-emitting assembly that is removably coupled to the mounting frame configured to operate using power provided by the power supply assembly, and one or more controllers configured to control an operation of the light-emitting assembly.

Abstract: Jewelry and gem stone lighting apparatuses and systems including light emitting elements powered either by body heat or via external fields and methods for making and using same.

Abstract: A lighting unit for a motor vehicle, having a reflector, a circuit board with at least one light source, and a heat sink, wherein the circuit board is arranged on the reflector in an assembled state of the lighting unit in such a way that the light source is associated with a reflecting surface of the reflector for directed emission of the light emitted by the light source, and wherein the circuit board can be cooled in the region of the light source via the heat sink in the assembled state of the lighting unit. The circuit board is arranged between the reflector and the heat sink in the assembled state of the lighting unit and is positioned relative to the reflector and the heat sink in a predefined spatial position via the reflector and the heat sink.

Abstract: A modular tailgate light for a vehicle having an auxiliary lighting plug, the modular tailgate light broadly including a left section, a right section, a middle section, and a power connector. The left section, the right section, and the middle section each include a set of red lights and a set of white lights. The red lights of the middle section include left red lights and right red lights. The modular tailgate light can be used in a small vehicle configuration in which the left and right sections are connected together with the middle section omitted and a large vehicle configuration in which the middle section is connected between the left and right sections. In the large vehicle configuration, the left red lights activate identically to the red lights of the left section and the right red lights activate identically to the red lights of the right section.

Abstract: A lighting assembly is presented herein. The lighting assembly includes a receptacle terminal having a connection portion defining an aperture configured to receive a corresponding plug terminal along a longitudinal axis and a terminal housing defining an opening and a cavity in which the connection portion is disposed. The connection portion is sized, shaped, and arranged within the cavity to be movable along a lateral axis perpendicular to the longitudinal axis.

Abstract: A candle shade is adapted to fit securely atop a candle vessel. The shade assumes the form of a double conical frustum. An interior shell makes direct contact with the candle vessel. The interior shell reflects radiative heat back to the candle surface while allowing smoke and gases to vent upward. Ideally, it is constructed from aluminum sheet metal and includes a band near the lower opening for an airtight seal. An exterior shell encloses the interior shell. The exterior shell protects the outer environment from the heat of the flame, especially so that the shade can be handled safely. Insulation is aided by handles on the exterior shell. Spacers affixed to the interior shell also create an insulating air space between the interior and exterior shells. The double-cone candle shade reduces candle “set” time by 65%.

Abstract: A lamp includes a lamp holder, a lampshade combined with the lamp holder, and at least one diffuser. The lamp holder includes a base, a circuit board arranged on the base, and a plurality of light-emitting elements arranged on the circuit board. The diffuser is used to cover the light-emitting elements, and a sufficient distance between the diffuser and the light-emitting elements is maintained so that the light of the light-emitting elements are diffused uniformly, which can reduce the light spots caused by the special shape of the lampshade or the excessive distance between the light-emitting elements and improve the light uniformity of the lamp.

Abstract: Provided is a light-emitting device with reduced in-plane luminance variation. The light-emitting device includes a main substrate, a plurality of light sources, a plurality of lenses, and one or more light reflection members. The main substrate includes a central part and a peripheral part that surrounds the central part. The plurality of light sources are each disposed on the central part of the main substrate. The plurality of lenses are disposed to correspond to the plurality of light sources respectively. The plurality of lenses apply optical effects to beams of light from the plurality of light sources respectively. One or more light reflection members are each disposed on the peripheral part. The light reflection members each have reflectance that is higher than the reflectance of the main substrate.

Abstract: A lens including a light entering part having a concave shape in a lower region of the lens, and on which light emitted from a light emitting device is to be incident, and a light exiting part through which the incident light is emitted to an outside of the lens, in which each of the light entering part and the light exiting part has a major axis and a minor axis in plan view, and the major axis of the light entering part is orthogonal to the major axis of the light exiting part, the light entering part includes a light incident vertical surface extending from a lower surface of the lens, and a light incident inclined surface extending upward from the light incident vertical surface, and the light incident vertical surface surrounds the light emitting device.

Abstract: The present disclosure relates to a lens and a lighting fixture, the lens includes a light incident portion and a light-emitting portion, the light-emitting portion includes a main light-emitting surface and an auxiliary light-emitting surface surrounding the main light-emitting surface. The main light-emitting surface and the auxiliary light-emitting surface protrude toward a side away from the light incident portion, the auxiliary light-emitting surface is a curved surface. The auxiliary light-emitting surface has a protruding height gradually decreasing in a direction away from the main light-emitting surface. The lighting fixture includes a lamp housing, a light-emitting assembly, and a light distribution assembly, the light distribution assembly includes the above lens.

Abstract: A light system includes a substrate, one or more light emitting diodes (LEDs) coupled to the substrate, and an optical distribution plate positioned proximate the substrate. The optical distribution plate includes one or more optical structures each corresponding to the one or more LEDs. The one or more optical structures include a first surface that focuses LED light from the corresponding LED in a first orientation, and an opposite second surface that distributes LED light from the LED in a second orientation. The second orientation being substantially orthogonal to the first orientation.

Abstract: A system and method for verifying a desired alignment of an ultraviolet (UV) lamp with respect to a target component include a housing. A UV sensor is coupled to the housing. The UV sensor is configured to detect UV light emitted from one or more UV light emitters of the UV lamp and output one or more signals indicative of the UV light. A UV recorder is coupled to the housing. The UV recorder is in communication with the UV sensor. The UV recorder is configured to receive the one or more signals from the UV sensor and store data regarding the one or more signals.

Abstract: A high-lumen light-emitting diode (LED) luminaire assembly in a harsh and hazardous environment is provided. The luminaire assembly includes an integrated mounting module manufactured as a single piece and including a first side and a second side opposite the first side. The luminaire assembly also includes an LED assembly coupled to the mounting module at the second side of the mounting module, and a driver configured to provide electricity to the LED assembly. The luminaire assembly further includes a driver cover sized to cover the driver and coupled to the mounting module at the first side of the mounting module. The driver and the LED assembly are operable within a target peak temperature limit for the hazardous environment.

Abstract: Disclosed is an outdoor light fixture assembly having a housing and a lens module. The lens module is removable from the housing for servicing. The removable lens module includes a socket for one or more light sources and a lens. The outdoor light fixture further includes engagement structures for installing and removing the lens module from the housing without the use of tools.

Abstract: A lamp includes a mounting part configured to be capable of being mounted on a fixture, a lamp part, and two locking parts arranged on the lamp part. The mounting part includes two locking portions and each of the two locking portions have two first fastening elements arranged on two opposite ends thereof. Each of the locking part defines two slot assemblies corresponding to the first fastening elements. Each of the slot assemblies comprises a first slot, a second slot communicates with the first slot, and a third slot adjacent to the second slot. The lamp part is configured to be capable of moving between a first position where the first fastening elements are received in the first slots and a second position where the first fastening elements are received in the second slots while the ends of the first fastening elements enters the third slots.

Abstract: A holder for a light source comprises a first arm connected at a first arm second end to a pivot member (300) having a pivot member central axis. The first arm has a first arm first end comprising a first clip. The first arm is configured to pivot around the pivot member central axis. The pivot member is configured to frictionally engage with the light source.

Abstract: Disclosed is a lamp, including a base, a height adjustable controller, a steering gear, a light source, and a control assembly electrically connected to the light source. The steering gear includes a seat body, a positioning ring, a spring, a tray, a steering ball, and a steering tube connected to the steering ball and the light source, the seat body has a first through hole and a first opening communicated with the first through hole, the positioning ring and the tray are mounted in the first through hole, the spring is clamped between the positioning ring and the tray, the tray is clamped between the spring and the steering ball, a part of the steering ball is located in the first through hole, and a remaining part of the steering ball is protruded out the first through hole from the first opening and connected with the steering tube.

Abstract: This utility design discloses a lamp body installation structure, which comprises a structure main body and a lamp cap electrode arranged on the structure main body. An elastic pin is arranged in the main body of the structure, and the elastic pin can be penetrated out from the inside of the structure main body. The utility design also comprises a toggle rod, the elastic pin can move axially under the action of the toggle rod. A lamp with a lamp body mounting structure is also disclosed. Compared with the prior art, advantage of the utility design is that the application adds a limit column, a spring and other matching structures, which can realize the fixation of the utility model at the lower limit of the spring force when the utility model is connected with the GU24 lamp holder during the installation, so as to realize its stable installation.

Abstract: A flashlight assembly with an electromechanical switch assembly and internal sealed subframe, and methods of assembling and operating same, are disclosed.

Abstract: Example embodiments relate to connection modules for luminaires. One example connection module for a luminaire with a light module includes a support. The connection module also includes a surge protection circuitry arranged on the support. Additionally, the connection module includes a first and second supply terminal for connection to a power supply. The first and second supply terminal are connected to the surge protection circuitry. Further, the connection module includes a first and second load terminal for connection to a drive means of the light module. The first and second load terminal are connected to the surge protection circuitry. In addition, the connection module includes at least a first and second control terminal. A connection line for electrically connecting the first and second control terminals is arranged on the support.

Abstract: A lighting apparatus includes a wire connector, a driver and a light source. The wire connector is used for connecting an external wire and an internal wire. The external wire includes a first external sub-wire and a second external sub-wire. The internal wire includes a first internal sub-wire and a second sub-wire. The wire connector has a scraper for cutting contact parts of the internal wire and the external wire for the first external sub-wire to be electrically connected to the first internal sub-wire and the second external sub-wire to be electrically connected to the second internal sub-wire. The driver is used for connecting to an external power via the internal wire and the external wire and for converting the external power to a driving current. The light source receives the driving current to emit a light.

Abstract: A solid-state lighting fixture assembly having a lighting fixture with a socket configured to receive a plug associated with one or more accessories to allow for easy in-field mounting of accessories, e.g., controls, onto installed lighting fixtures. The socket may be internally electrically connected to an auxiliary power output of a driver and/or to a battery power pack within the lighting fixture assembly, thereby providing direct-current voltage power for the accessory and, also, allowing for signal transmission to and from the accessory. Each accessory includes one or more sensors and communication components to provide the connected lighting fixture assembly with specific capabilities including, but not limited to, motion detection, ambient light level detection, ambient temperature measurement and wireless communications.

Abstract: The present invention is directed to an illuminating landscape edging strip having an elongated edging substrate. Contained within the edging substrate are a heat sink disposed in a first slot along a long dimension of the edging substrate, a lighting strip disposed in a first channel along the long dimension of the edging substrate, and a lens disposed in a second slot along the long dimension of the edging substrate. The lighting strip abuts against and is thermally conductive to the heat sink. The lens is closely spaced apart from a light emitting surface on the lighting strip. The lens and the second slot open into light-emitting channel on a front face of the edging substrate. The upper edge of the light-emitting channel includes a bevel that increases the angle of light exposure.

Abstract: An integrated lighting module may have a driver cap, a heat sink module, a LED light chip, an optical reflector, and a holder. The driver cap may be configured to hold a driver within the driver cap to power the LED light chip. The driver cap may attach to a top of the heat sink module. The heat sink module may be finned at its upper portions, the heat sink module may have a larger diameter than a non-finned bottom portion. The holder may screw upon the bottom portion of the heat sink module with the optical reflector and the LED light chip disposed between the holder and the heat sink module. Trim, such as MR16 sized trim, a lamp, and/or a lens holder, may attach to bottom flanges of the holder. The integrated lighting module may be adjusted without interfering with the trim.

Abstract: The T-bar includes an elongate rigid spine extending between terminal ends including either a fixed anchor or adjustable anchor for attachment to adjacent T-bars or other supports. An upper heat sink is provided on an upper portion of the spine to enhance heat transfer from the T-bar to air surrounding upper portions of the T-bar. A light housing is provided on a lower portion of the T-bar which is configured to support a lighting module therein, such as a light emitting diode (LED) light. A lower heat sink is provided above this light housing and integrated into a rest shelf which supports ceiling tiles adjacent the T-bar. A power supply is provided which can be removably attached to the T-bar and provide appropriately conditioned power for the lighting module.

Abstract: A lighting shower includes a body, a lighting device, a control module, and a hydraulic power generating device. The body has a first portion and a second portion facing opposite directions and includes an inlet tube and an outlet cover plate disposed on the second portion. The lighting device includes a transparent cover disposed on the first portion and a light-emitting element disposed in the transparent cover. The control module includes a storage battery and a controller electrically connected to the light-emitting element and adapted to control the light-emitting element to turn on or turn off. The water flows into a first chamber of the body from the inlet tube and through the hydraulic power generating device out from the outlet cover plate. The hydraulic power generating device is electrically connected to the control module to output an electrical energy to the storage battery for storage for providing an electricity required by the lighting device.

Abstract: A steam direct injection injector and direct injection heater assembly. The injector defines an enclosure having an upstream end that is constructed to receive a steam fluid flow and a plurality of radially oriented orifices that are configured to distribute and inject the steam into a surrounding fluid. A seat is disposed proximate a downstream end of the injector and a movable plug or modulating component is disposed within the enclosure proximate the seat. A biasing element is disposed between the seat and the modulating component and configured to interact with the seat and the modulating component to allow selective exposure of a second heating section without obstructing a first heating section that are defined by the radially oriented orifices of the injector.

Abstract: The present invention provides a method of preventing high temperature corrosion on a heat exchanging surface of a biomass boiler, including: a first feeding step, supplying a first biomass fuel to the boiler; a deposition step, performing combustion on the first biomass fuel during initial operation of the boiler, and forming an inert deposition layer on a surface of a heat exchanger of the boiler; a second feeding step, supplying a second biomass fuel different from the first biomass fuel to the boiler; and a normal combustion step, performing combustion on the second biomass fuel. A direct contact of an alkali metal chloride with a metal pipe wall is prevented by forming an inert deposition layer on the surface of the heat exchanger of the boiler in the deposition step, thereby establishing a physical barrier between the heat exchanging surface of the boiler and the alkali metal chloride to effectively solve a problem of preventing corrosion on the metal pipe wall of the boiler.

Abstract: The invention relates to a furnace for performing an endothermic process, the furnace including a plurality of process tubes containing a catalyst for converting a gaseous feed, wherein the process tubes are arranged in rows within the furnace, each row of process tubes thereby defining a process tube row, a plurality of inner burners arranged in rows, each row of inner burners being arranged between and parallel to process tube rows, thereby defining an inner burner row, and a plurality of outer burners arranged in rows, each row of outer burners being arranged between and parallel to a process tube row and a furnace wall, thereby defining an outer burner row. A number of burners of an outer burner row is smaller than a number of burners of an inner burner row. The invention also relates to a process for operating a furnace for performing an endothermic process.

Abstract: An injector nose for a turbomachine includes a primary fuel circuit ending in a fuel-ejection nozzle, and a secondary fuel circuit including an annular-shaped terminal fuel-ejection part arranged around the fuel-ejection nozzle. An upstream part of the primary fuel circuit includes an annular channel, which extends around the secondary fuel circuit and is defined by an external wall of the injector nose. The injector nose includes air intake channels extending through the annular channel and having inlets opening into the external wall and outlets opening into an annular air injection channel arranged radially to the inside in relation to the terminal fuel-ejection part, around the fuel-ejection nozzle, and cooperating with the terminal fuel-ejection part in order to form an aerodynamic secondary injector.

Abstract: A method includes producing an arrangement of grate bars for supporting fuel that is burned in an incinerator or other furnace device. The method includes positioning a pair of grate bars in adjacent side by side relation and with the respective upper sides that are configured to support the fuel, in generally aligned relation. The method further includes after positioning the grate bars, manipulating a fastener through respective recesses that extend in the grate bars, so that the grate bars are held in operative connection and in pressed together relation by the fastener. The method further includes subsequent to the fastener manipulation step, covering the recesses with at least one cover, such that the fastener is rendered inaccessible through the upper sides of the grate bars.

Abstract: A hydrocarbon management system comprises a flare boom configured to connect to a drilling or production rig. The flare boom is configured to combust at least a portion of hydrocarbon fluids flowed from the rig to the flare boom. A catcher is configured to be spatially positioned relative to the end of the flare boom. The catcher comprises a diverter positioned to divert a flow of uncombusted hydrocarbon liquids from the flare boom, and a container configured to receive the uncombusted hydrocarbon liquids diverted by the diverter.

Abstract: A method of monitoring a flame during gas combustion in a combustion chamber (10). A heating unit (1) has an evaluation unit, an extraction line (11) and a sensor (12). The sensor (12) is arranged in the extraction line (11) to detect thermal substance properties of the gas. Thus, it is determined if it is ambient air (B), a non-combusted fuel-air mixture (C) or particularly the hydrogen-air mixture, or a waste gas (A) generated during combustion. The sensor (12) transmits a recorded measured value to the evaluation unit. The evaluation unit uses the measured value to determine whether ambient air (B), the non-combusted fuel-air mixture (C), or waste gas (A) is flowing through the extraction line (11) and thereby determines whether the flame is burning or extinguished.

Abstract: The gas turbine combustor liner can delimit a combustion chamber, and have at least one monolithic ceramic block having a first face exposed to the combustion chamber and a second face opposite the first face, and a 3D fabric of ceramic fibers partially embedded inside the monolithic ceramic block, and partially extending outside the second face of the monolithic ceramic block, away from the combustion chamber.

Abstract: An electrically decoupled jet engine. The electrically decoupled jet engine includes a combustion chamber which creates a toroidal flow of air and a rotational electric motor which drives a fuel supply into the combustion chamber. The toroidal flow of air is mixed with the fuel and combusted in the combustion chamber to create thrust.

Abstract: A combustor assembly for a gas turbine engine defining a radial direction and a circumferential direction includes a liner assembly at least partially defining a combustion chamber and including at least one liner extending between a downstream end and an upstream end, the downstream end of the at least one liner defining a radial opening and an interface surface extending along the circumferential direction and along the radial direction; and a seal member including a body, a flange, and a radial element, the body defining a body surface extending along the radial direction and positioned adjacent the interface surface of the at least one liner, the flange extending forward from the body, and the radial element coupled to the flange and extending into the radial opening defined by the at least one liner.

Abstract: An orifice holder includes a body defining inner wall portions facing each other and spaced apart at a first distance for receiving a portion of a stem of a spreader therebetween. The body further defines a first cup and a second cup, each extending outwardly from opposing sides of the inner wall portions. Each of the first cup and the second cup has a peripheral rim extending around an upper perimeter thereof and open at respective adjacent ends of the inner wall portions to define a fluid path past the peripheral rims, through the respective first and second cups, between the inner wall portions, and into the stem.

Abstract: This application provides a gas stove temperature-control system, the gas stove with the same and a method for controlling temperature of the gas stove. The gas stove temperature-control system including a power board and a rechargeable battery supplying power to the power board further includes: a stove cover limit switch connected to the power board; a gas valve connected to the power board; an electromagnetic valve connected to the power board and the gas valve; an ignition pin connected to the power board; a burner connected to the gas valve and the ignition pin and; and a thermocouple connected to the power board.

Abstract: A cooking hob with illumination equipment. The cooking hob includes a transparent or semi-transparent top panel arranged at a top side of the hob. The cooking hob includes at least one cooking zone and at least one control element for controlling the cooking zone. The cooking hob includes at least one transparent or semi-transparent layer. Symbols or images are printed on, applied on, impressed in and/or embossed in the layer. Each symbol or image corresponds with a cooking zone, a control element and/or an operation state of the cooking hob. The cooking hob includes light source elements arranged below the top panel and the layer. Each light source element corresponds with one or more symbols or images. One or more light source elements are activated on demand by the user and, if the corresponding cooking zone is activated, the corresponding control element responds or the corresponding operation state occurs, respectively.

Abstract: A venting system in accordance with the present disclosure includes a ventilation fan and one or more sensors coupled to the ventilation fan. The ventilation fan is positioned to vent air from an indoor environment. The sensors are positioned to monitor conditions in the indoor environment and selectively operate the ventilation fan to condition air in the indoor environment.

Abstract: A ventilation hood is provided. The ventilation hood includes a housing provided above a heating cooker and having an air suction port on a lower surface thereof, a blowing fan provided in the housing to induce air to the air suction port, and a panel provided below the housing to form an airflow path between the lower surface of the housing and the panel, wherein the panel faces the air suction port with a gap therebetween to cover the air suction port so that air is sucked into the airflow path from a front of an upstream opening of the airflow path as the blowing fan operates.