CN201469277U

CN201469277U - Sweat fingerprint powder display device

Info

Publication number: CN201469277U
Application number: CN2009201775882U
Authority: CN
Inventors: 杜心全
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-09-05
Filing date: 2009-09-05
Publication date: 2010-05-19
Anticipated expiration: 2019-09-05

Abstract

A sweat fingerprint powder display device belongs to the field of criminal science and technology. The display device is characterized in that an electric transformer, a single-pole single-throw switch, a power supply change-over switch, a blower, a feeding box, a powder blender, a multi-band light source, a rotary band switch, an electric fan, a rechargeable battery and a blocking plate are mounted in a hair dryer-like outer housing; and a charging jack and a suction hole are formed at the rear end of the housing, and a powder outlet is formed at the front end of the housing. The above elements are connected through electric wires, so as to realize the mutual conversion between AC supply and DC supply; and the power is blown out through the electric fan, the blender and the blower, so as to ensure that the power can be evenly pasted on the sweat fingerprint, thereby displaying the fingerprint, and meanwhile, the sweat fingerprint and other body fluids can be observed by opening the multi-band light source. The utility model has portability, is suitable for both indoor operation and outdoor operation, both large objects and small objects, and can find the sweat fingerprint and body fluids, as well as display the sweat fingerprint.

Description

Sweat fingerprint powder visualizer

Affiliated technical field

This utility model belongs to the science and technology concerning criminal matters field, can be for disclosing and proving that the suspect produces evidence.

Background technology

Bronze, argentum powder or graphite powder etc. have been introduced in the science and technology concerning criminal matters by method manual, that the employing hairbrush manifests and extract sweat fingerprint.This method is very high to the softness of hairbrush and operator's specification requirement, otherwise, destroy impression of the hand easily, cause irremediable loss.Especially the sweat fingerprint to leaving on metope, the car body, finding and extracting needs the long time.

Summary of the invention

Goal of the invention of the present utility model is to make a portable instrument, raw materials such as bronze, argentum powder or graphite powder can be blown equably leaving over and manifest sweat fingerprint on the object of sweat fingerprint, can pass through multiband light Feed Discovery sweat fingerprint or body fluid again.Overcome manual employing hairbrush to the softness of hairbrush and operator's the high deficiency of specification requirement.Solved simultaneously the problem that adopts aspects such as multiband light Feed Discovery sweat fingerprint or body fluid again.

The scheme that its technical problem that solves this utility model adopts is: shell like the hair dryer, be equipped with 1 of electronic transformer in the housing; 1 of single-pole single-throw switch (SPST); 1 of transfer switch; 1 of aerator; 1 of Feeding box; 1 of powder blender; 1 of barrier plate; 1 of alternative light source; 1 of rotary band switch; 1 in electric fan; 1 of chargeable battery; The housing rear end is provided with charging jack and wind inlet, and the housing front end is provided with dust outlet.Be connected with the negative pole of electronic transformer E2 by the negative pole of electric wire,, the positive pole of alternative light source L be connected with rotary band switch S2 the positive pole of electronic transformer E2 anodal a connection with transfer switch S3 with alternative light source L; The negative pole of aerator W, electric fan W1, powder blender W2 is connected with the negative pole of electronic transformer E2, the negative pole of electronic transformer E2 is connected with the negative pole of transfer switch S3; The positive pole of aerator W, electric fan W1, powder blender W2 is connected with the end of single-pole single-throw switch (SPST) S1, and the other end with single-pole single-throw switch (SPST) S1, rotary band switch S2 is connected with the positive pole of chargeable battery E1 again; Again with the positive pole of chargeable battery E1 another anodal connection, the negative pole of chargeable battery E1 is connected with another negative pole of transfer switch S3 with transfer switch S3.

The beneficial effects of the utility model be function more, be easy to carry, the suitable sweat fingerprint of leaving on difference sizes, different colours, the smooth object that is apparent in raw materials such as bronze, argentum powder, graphite powders, simultaneously, the light source of available different-waveband is found sweat fingerprint or body fluid.

Description of drawings

Below in conjunction with drawings and Examples this utility model is further specified.

Fig. 1 is a sweat fingerprint powder visualizer structure chart.

Fig. 2 is a sweat fingerprint powder visualizer circuit diagram.

1 is electronic transformer among Fig. 1; The 2nd, single-pole single-throw switch (SPST); The 3rd, transfer switch; The 4th, aerator; The 5th, Feeding box; The 6th, powder blender; The 7th, barrier plate; The 8th, dust outlet; The 9th, alternative light source; The 10th, rotary band switch; The 11st, electric fan; The 12nd, chargeable battery; The 13rd, the charging jack; The 14th, wind inlet.

E1 is a chargeable battery among Fig. 2; E2 is an electronic transformer; S1 is a single-pole single-throw switch (SPST); S2 is a rotary band switch; S3 is a transfer switch; L is an alternative light source; W is an aerator; W1 is an electric fan; W2 is a powder blender.

The specific embodiment

In Fig. 1, shell like the hair dryer is equipped with 1 of electronic transformer in the housing; 1 of single-pole single-throw switch (SPST); 1 of transfer switch; 1 of aerator; 1 of Feeding box; 1 of powder blender; 1 of barrier plate; 1 of alternative light source; 1 of rotary band switch; 1 in electric fan; 1 of chargeable battery; The housing rear end is provided with charging jack and wind inlet, and the housing front end is provided with dust outlet.

In embodiment illustrated in fig. 2, be connected with the negative pole of electronic transformer E2 by the negative pole of electric wire alternative light source L, with the positive pole of electronic transformer E2 anodal a connection, the positive pole of alternative light source L is connected with rotary band switch S2 with transfer switch S3; The negative pole of aerator W, electric fan W1, powder blender W2 is connected with the negative pole of electronic transformer E2, the negative pole of electronic transformer E2 is connected with the negative pole of transfer switch S3; The positive pole of aerator W, electric fan W1, powder blender W2 is connected with the end of single-pole single-throw switch (SPST) S1, and the other end with single-pole single-throw switch (SPST) S1, rotary band switch S2 is connected with the positive pole of chargeable battery E1 again; Again with the positive pole of chargeable battery E1 another anodal connection, the negative pole of chargeable battery E1 is connected with another negative pole of transfer switch S3 with transfer switch S3.

Claims

1. sweat fingerprint powder visualizer, select shell like the hair dryer for use, it is characterized in that: 1 of electronic transformer of dress, 1 of single-pole single-throw switch (SPST), 1 of transfer switch, 1 of aerator, 1 of Feeding box, 1 of powder blender, 1 of barrier plate, 1 of alternative light source, 1 of rotary band switch, 1 in electric fan, 1 of chargeable battery in the described housing; Described housing rear end is provided with charging jack and wind inlet, and the housing front end is provided with dust outlet; Be connected with the negative pole of electronic transformer (E2) by the negative pole of electric wire alternative light source (L), with the positive pole of electronic transformer (E2) anodal a connection, the positive pole of alternative light source (L) is connected with rotary band switch (S2) with transfer switch (S3); The negative pole of aerator (W), electric fan (W1), powder blender (W2) is connected with the negative pole of electronic transformer (E2), the negative pole of electronic transformer (E2) is connected with a negative pole of transfer switch (S3); The positive pole of aerator (W), electric fan (W1), powder blender (W2) is connected with an end of single-pole single-throw switch (SPST) (S1), and the other end with single-pole single-throw switch (SPST) (S1), rotary band switch (S2) is connected with the positive pole of chargeable battery (E1) again; Again with the positive pole of chargeable battery (E1) another anodal connection, the negative pole of chargeable battery (E1) is connected with another negative pole of transfer switch (S3) with transfer switch (S3).