A toy dart includes a cylindrical wall having an inner surface, an outer surface, a first open end at one end of the cylindrical wall, and second open end at the other end of the cylindrical wall. At least two fins are attached to the outer surface of the cylindrical wall. In addition, a resilient, bulbous head portion is mounted on the cylindrical wall at the second open end thereof, the head portion defining a chamber adapted to contain fluid and having an opening formed therein so that the chamber communicates with an interior of the cylindrical wall. The toy dart is constructed and arranged for aerodynamic flight when thrown, and upon the bulbous head impacting a hard surface, the bulbous head portion deforms for moving fluid contained therein into the interior of the cylindrical wall. Other embodiments of the toy dart are further contemplated.
A sound producing device comprises an outer tube having an open end and a closed end, a plunger which fits inside the open end of the outer tube, and an amount of flexile material arranged between an outer surface of the plunger and an inner surface of the outer tube when the plunger is inserted in the outer tube. Movement of the plunger within the outer tube creates a pressure or vacuum, forcing air past the flexile material and thereby creating an amusing sound. The movement may also create an entertaining visual effect if the outer tube is made of a transparent material. The device may be configured to include a guided plunger having a longitudinal guide shaft therethrough which is adapted to receive a centering guide pin associated with the outer tube. Other embodiments may incorporate multiple tubes to produce distinctly different amusing sounds, or a sound enhancer tube to produce an amusing sound with richer tone.
A phosphor composition absorbs ultraviolet radiation and emits a green visible light. The phosphor composition comprises at least one of: Ba.sub.2 SiO.sub.4 :Eu.sup.2+ ; Ba.sub.2 MgSi.sub.2 O.sub.7 :Eu.sup.2+ ; Ba.sub.2 ZnSi.sub.2 O.sub.7 :Eu.sup.2+ ; BaAl.sub.2 O.sub.4 :Eu.sup.2+ ; SrAl.sub.2 O.sub.4 :Eu.sup.2+ ; and BaMg.sub.2 Al.sub.16 O.sub.27 :Eu.sup.2+,Mn.sup.2+. Further, when the green-light emitting phosphor is combined with appropriate red and blue phosphors in a phosphor conversion material blend, and the phosphor conversion material blend absorbs ultraviolet radiation, and emits a bright white light with high brightness and quality. The ultraviolet radiation source may comprise a semiconductor ultraviolet radiation source.
