| 摘要 |
The present invention relates to an air horn for a railroad car and, in particular, to an air horn for a railroad car, wherein an exhaust hole is formed in a inflow passage of compressed air and an orifice is connected to the exhaust hole to control an inflow amount of the compressed air, thereby readily controlling an alarm sound volume. The air horn for a railroad car according to the present invention comprises: an air inflow passage formed at one side of the lower part of a body, into which compressed air is introduced; an exhaust hole formed at one side of the air inflow passage to discharge some of introduced compressed air to the outside; and an orifice formed and connected to the exhaust hole to change a flow rate of the introduced compressed air to reduce a pressure and discharge some of the compressed air to the outside, thereby increasing or decreasing a volume (size) of an alarm sound. |
