CN2861388Y - Flag pole for blowing flag - Google Patents

Abstract

The utility model relates to a flagpole for blowing flags, which includes a fan located in the upper part of the flagpole for directing airflow to a flag connected to a nearby flagpole. The fan uses a plurality of holes located in the flagpole as an inlet for sucking air, and uses a slit located at the upper part of the flagpole as an outlet for blown air, thereby guiding the air flow to the flag on the flagpole, overcoming the need for air in the prior art. The disadvantage of sucking in almost the entire length of the flagpole and having to overcome the huge resistance on the way reduces noise and improves efficiency.

Description

blowing flag flagpole

technical field

The present invention relates to flagpoles. The present invention relates particularly, though not exclusively, to a flagpole having a plurality of fans mounted adjacent to the flag within the flagpole to mimic a breeze blowing against the flag.

Background technique

Flag-blowing flagpoles are known technology that include high powered motors that draw air through the flagpole from its base to blow along the flag. This is a noisy, inefficient device because the air has to be sucked nearly the entire length of the flagpole, overcoming enormous resistance along the way.

Contents of the invention

It is an object of the present invention to overcome or substantially eliminate the above disadvantages, and/or generally to provide a flagpole with internally mounted fans of several adjacent flags to simulate a breeze - especially useful for indoor flagpoles.

A flagpole is disclosed herein that includes a fan located within an upper portion of the flagpole for directing airflow to a flag attached to a flagpole adjacent thereto.

Preferably, the flagpole has a plurality of fans including said fan, the plurality of fans being arranged one above the other in the upper part of the flagpole.

Preferably, the flagpole further includes a slit at an upper portion of the flagpole, behind which the electric fan is installed, the slit serving as an outlet for air blown by the fan.

Preferably, the flagpole further comprises a plurality of holes in the flagpole for inlets for air drawn by the fan.

Preferably, the flagpole further includes a fan support rod located in the upper part of the flagpole, and the electric fan is connected to the fan support rod.

Preferably, each electric fan comprises a high speed DC motor.

Preferably, the flagpole further includes a base from which the flagpole protrudes vertically, and a transformer at the base for supplying direct current to the DC motor.

Preferably, the flagpole further comprises a control circuit powered by a transformer for controlling the DC motor.

Preferably, the flagpole further comprises one or more switches for selecting high or low speed operation of the DC motor.

Preferably, each DC motor drives a pair of impellers.

Preferably, the flagpole includes, downstream of each fan, a slat for slightly upwardly deflecting the airflow caused by the fan.

Advantageously, the fan installed in the upper part of the flagpole uses a plurality of holes in the flagpole as inlets for sucking air, and slits in the upper part of the flagpole as outlets for blowing air, thereby directing the air flow to a fan connected to its vicinity. The flag on the flagpole overcomes the defects in the prior art that air must be sucked into almost the entire length of the flagpole and the huge resistance on the way needs to be overcome, the noise is reduced, and the efficiency is improved.

Description of drawings

Preferred forms of the invention will now be described by way of example with reference to the accompanying drawings, in which:

Figure 1 is a schematic diagram of a flagpole with a flying flag;

Figure 2 is a schematic front view of the top of the flagpole;

Fig. 3 is a schematic cross-sectional view of the top of the flagpole;

Fig. 4 is a schematic cross-sectional plan view of a flagpole that cuts across an internal fan motor in one embodiment;

Fig. 5 is a schematic cross-sectional plan view of a flagpole that cuts across an internal fan motor in another embodiment;

Fig. 6 is the circuit diagram of controlling each fan;

Figure 7 is a schematic cross-sectional view of another flagpole with a fluttering flag;

Figure 8 is a schematic side view of the upper portion of the flagpole of Figure 7; and

FIG. 9 is a schematic cross-sectional plan view of the flagpole of FIG. 8 cut across an internal motor.

Detailed ways

A flagpole 10 on which a flag 11 is flying is schematically shown in FIG. 1 of the accompanying drawings. Flagpole 10 may typically be a piece of metal (eg, stainless steel) comprising several interconnected segments supported on base 12 . The base 12 can be bolted down to a concrete floor or road. The housing sits on a base 12 with an electrical transformer 14 inside. Transformer 14 accepts a high voltage AC input (eg, 110 volts or 220 volts) and provides a low voltage DC output (eg, 6 volts or 12 volts).

A plurality of electric fans 17 comprising DC motors 18 are mounted within the upper portion of the flagpole in such a way that the fan impellers sit directly within or behind the air outlet slot 20 at the upper portion of the flagpole directly below the flag top 15 Extend vertically. The length of the slot 20 is close to the height of the flag 11 .

As shown in FIG. 4 , the fan support bar 16 is fixed in the upper part of the flagpole by screws in the form of a longitudinal U-shaped groove. As shown, the support pole 16 is mounted within the upper portion of the flagpole by a diametrically opposed pair of brackets 23 and screws. As an alternative, the DC motor 18 can be directly mounted to the flagpole via a bracket 23 and screws as shown in FIG. 5 .

In the flagpole, around each fan, there are a plurality of air intakes 19 through which the fan sucks in the air blown out through the slots 20 .

The fans are capable of running at high speeds, typically on the order of 10,000 RPM, and can run at such high speeds to generate high winds that make flags fly strongly as in high winds. The fans can be slowed down to create low wind speeds that allow the flag to flutter as leisurely as in a gentle breeze. To this end, a control circuit 22 receiving power from the transformer 14 is provided. The control circuit 22 is located within the housing 13 . The control circuit 22 can cooperate with a plurality of switches 21 to set the high-speed or low-speed operation state of the fan.

A further embodiment of the invention is shown in FIGS. 7 to 9 . It does not have a housing 13 and a transformer 14 is connected to a power line 24 . In addition, each motor 18 has an output shaft extending from each end thereof. Each end of the output shaft has fans 17a and 17b. Both fans rotate in the same direction, thus more effectively blowing the airflow as indicated by the arrows in FIGS. 8 and 9 . In this embodiment, each motor 18 is installed in a horizontal tube 25 via a bracket 23 , and the horizontal tube 25 crosses the flagpole 10 transversely. An array of slats 26 are connected to tube 25 to effectively direct the output airflow to the desired portion of flag 11 . The slightly upwardly deflected airflow through the slightly upwardly sloping slats shown is quite effective at flying the flag.

It should be understood that modifications and substitutions obvious to those skilled in the art are not considered to depart from the scope of the present invention. For example, instead of providing multiple air intakes 19, a special flag top 15 could be designed to allow air to enter from the top of the flagpole while at the same time eg preventing rainwater from entering the flagpole.

Claims (11)

1, a kind of flag flagpole that blows is characterized in that, the described flag flagpole that blows comprises the fan that is positioned at flagpole top, is used for guiding air-flow into be connected near the flagpole it flag.

2, the flag flagpole that blows as claimed in claim 1 is characterized in that, it has a plurality of fans that comprise described fan, and one is positioned at and is arranged in flagpole top on one.

3, the flag flagpole that blows as claimed in claim 2 is characterized in that, it further is included in the slit at place, flagpole top, and described electric fan is installed in thereafter, and slit is as the outlet of air that fan blows.

4, the flag flagpole that blows as claimed in claim 2 is characterized in that, it further is included in a plurality of holes in the flagpole, as the inlet of air that fan is drawn.

5, the flag flagpole that blows as claimed in claim 2 is characterized in that, it further comprises the fan steady arm that is positioned at flagpole top, and electric fan is connected to this steady arm.

6, the flag flagpole that blows as claimed in claim 2 is characterized in that, wherein each electric fan comprises high speed DC motor.

7, the flag flagpole that blows as claimed in claim 6 is characterized in that, it further comprises flagpole from its pedestal that vertically stretches out, and the pedestal place is used for providing galvanic transformer to the DC motor.

8, the flag flagpole that blows as claimed in claim 7 is characterized in that, it further comprises the control circuit that is used to control the DC motor that power is provided by transformer.

9, the flag flagpole that blows as claimed in claim 6 is characterized in that, it further comprises the one or more changeover switches that are used to select the high or low speed running of DC motor.

10, the flag flagpole that blows as claimed in claim 6 is characterized in that, wherein a pair of impeller of each DC motor-driven.

11, the flag flagpole that blows as claimed in claim 1 is characterized in that, what it was included in each fan downstream will be by the little batten that upward deflects of the air-flow that fan causes.

Images